Paper  bibtex   

@phdthesis{cameron_chemostratigrapic_2015,
	address = {Athens, Georgia},
	title = {Chemostratigrapic investigations of beaver wetlands along {Jarrett} {Creek}, {North} {Carolina}, {USA}.},
	url = {http://coweeta.uga.edu/publications/10953.pdf},
	school = {The University of Georgia},
	author = {Cameron, C.S.},
	year = {2015},
	keywords = {nitrogen, CWT, carbon, floodplain, meadow}
}

Paper  bibtex   

@article{rosemond_experimental_2015,
	title = {Experimental nutrient additions accelerate terrestrial carbon loss from stream ecosystems},
	volume = {347},
	url = {http://coweeta.uga.edu/publications/10922.pdf},
	number = {6226},
	journal = {Science},
	author = {Rosemond, Amy and Benstead, Jonathan and Bumpers, Phillip and Gulis, Vladislav and Kominoski, John and Manning, David and Suberkropp, Keller and Wallace, Bruce},
	year = {2015},
	keywords = {nitrogen, algae, CWT, phosphorus, carbon, nutrient, carbon sequestration, leaf litter}
}

Paper  bibtex   

@article{berdanier_multi-year_2015,
	title = {Multi-year drought-induced morbidity preceding tree death in {Southeastern} {US} forests},
	url = {http://coweeta.uga.edu/publications/10970.pdf},
	journal = {Ecological Applications},
	author = {Berdanier, B., Aaron and Clark, S., James},
	year = {2015},
	keywords = {CWT, mortality, drought, tree, forest, long-term, adaptive management, morbidity}
}

Paper  abstract   bibtex   

@article{zamor_turbidity_2007,
	title = {Turbidity affects foraging success of drift-feeding rosyside dace.},
	volume = {136},
	url = {http://cwt33.ecology.uga.edu/publications/3031.pdf},
	abstract = {The effects of suspended sediment on nongame fishes are not well understood. We examined the effects of suspended sediment (i.e. turbidity) on reactive distance and prey capture success at spring-autumn (12},
	journal = {Transactions of the American Fisheries Society},
	author = {Zamor, Richard M. and Grossman, Gary D.},
	year = {2007},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{addington_adjustments_2006,
	title = {Adjustments in hydraulic architecture of {Pinus} palustris maintain similar stomatal conductance in xeric and mesic habitats.},
	volume = {29},
	url = {http://cwt33.ecology.uga.edu/publications/2289.pdf},
	abstract = {We investigated relationships between whole-tree hydraulic architecture and stomatal conductance in Pinus palustris Mill. (longleaf pine) across habitats that differed in soil properties and habitat structure. Trees occupying a xeric habitat (characterized by sandy, well-drained soils, higher nitrogen availability and lower overstory tree density) were shorter in stature and had lower sapwood-to-leaf area ratio (AS:AL) than trees in a mesic habitat. The soil-leaf water potential gradient (?S},
	journal = {Plant, Cell and Environment},
	author = {Addington, R.N. and Donovan, L.A. and Mitchell, R. J. and Vose, J.M. and Pecot, D. and Jack, S.B. and Hacke, U.G. and Sperry, J.S. and Oren, R.},
	year = {2006},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{giladi_choosing_2006,
	title = {Choosing benefits or partners: a review of the evidence for the evolution of myroecochory.},
	volume = {112},
	url = {http://cwt33.ecology.uga.edu/publications/2291.pdf},
	abstract = {Myrmecochory, or seed dispersal by ants, is a dispersal syndrome found among several thousand plant species occupying different ecosystems and geographical regions. Typically, ants benefit from consuming a lipid-rich appendage on the seed and in return provide seed dispersal service to the plant. Several hypotheses have been proposed to explain the selective advantage for plants resulting from myrmecochory, including directed dispersal, dispersal for distance and escape from seed predators. I contrast the evidence available in the literature for these hypotheses and distinguish the studies on the basis of ecosystem and plant growth forms. The predator-avoidance and the distance dispersal hypotheses were supported in most studies that addressed them, and the directed dispersal hypothesis was supported in about half of the studies that tested it. Multiple hypotheses were supported in most studies that tested more than one hypothesis, suggesting that the various selective advantages conferred from myrmecochory are seldom exclusive. I also review evidence for the hypothesis that plants have evolved adaptations both for selecting seed dispersers and for manipulating the behavior of those dispersers. Based on this evidence, I argue that focusing future research on the evolution of partner choice by myrmecochores and its effects on the overall plant fitness will be more fruitful than putting an emphasis on classifying the selective advantage to plants into distinct categories and test for their existence separately.},
	journal = {Oikos},
	author = {Giladi, Itamar.},
	year = {2006},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{vose_restoration_2005,
	title = {Restoration effects on {N} cycling pools and processes.},
	url = {http://cwt33.ecology.uga.edu/publications/2240.pdf},
	abstract = {We have presented two different aspects of evaluating the effects of restoration on biogeochemical cycling and aquatic ecosystems. The first examined the direct responses of nutrient cycling pools and processes to restoration efforts aimed at improving nitrogen retention and processing in degraded riparian zones. The second, stream NO3? responses to restoration burning, examined responses to restoration efforts that do not target biogeochemical cycling per se, but directly or indirectly influence nutrient cycling pools and processes. We presented an approach to evaluate short- and long-term responses of restoration on biogeochemical cycling using the resistance and resilience analogy. Our adaptation of the resistance/resilience analogy to evaluate restoration responses focused on three key attributes. First, the complexity of ecosystem biogeochemical cycling requires the determination of key indicators of response. In our example, we focused on N cycling pools and processes because N is often tightly conserved, responds to changes in physical and biological conditions, limits productivity in many ecosystems, an is toxic in some forms and concentrations. Second, evaluation of responses (direct or nontarget) can be approached by assessing response magnitude and duration. Restoration effectiveness can be assessed in terms of how quickly pools and processes return to desired conditions and how long they stay with desired boundary conditions. Finally, variable responses should be expected since the impacts of degradation may impact pools and processes differently. For example, pools and processes that depend primarily on changes in biological parameters may respond quite differently than those dependent on changes in physical parameters.},
	number = {5},
	journal = {Stanturf, John A},
	author = {Vose, J.M. and Geron, Chris. and Walker, J. and Raulund-Rasmussen, Karsten.},
	year = {2005},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{wyckoff_tree_2005,
	title = {Tree growth prediction using size and exposed crown area.},
	volume = {35},
	url = {http://cwt33.ecology.uga.edu/publications/3007.pdf},
	abstract = {We address the relationships between tree growth rate and growing environment for 21 co-occurring species. Tree growth rates are obtained from mapped plots at the Coweeta Long-Term Ecological Research site in the southern Appalachian Mountains. We employ high-resolution aerial photography to assess the light environment for trees growing in these plots, using exposed crown area (ECA) as a surrogate for light interception. The relationship between growth and ECA is compared with two other growth predictors: tree size and shade-tolerance classification. We find that ECA is an excellent predictor of tree growth (average R2 = 0.69 for nine species). When ECA is combined with tree size, growth rate prediction is improved (average R2 = 0.76). Tree size alone is also a strong predictor of tree growth (average R2 = 0.68). Shade-tolerance classification, by contrast, is a poor predictor of tree growth.},
	journal = {Canadian Journal of Forest Research},
	author = {Wyckoff, P. H. and Clark, James S.},
	year = {2005},
	keywords = {CWT}
}

@article{elliott_initial_2005,
	title = {Initial effects of prescribed fire on quality of soil solution and streamwater in the southern {Appalachian} mountains.},
	volume = {29},
	abstract = {Prescribed burning is being used in the Conasauga River Watershed in southeastern Tennessee and northern Georgia by National Forest managers to restore degraded pine/oak communities. The purpose of these burns is to restore shortleaf pine (Pinus echinata Miller) (mixed-oak forests with more diverse understories, which include native bluestem grasses (Andropogon gyrans Ashe and Schizachyrium scoparium (Michx.) Nash). Although burning might be an effective tool for restoring these stands to a shortleaf pine/mixed-oak/bluestem grass community type, it is not know whether these restoration burns will have a negative impact on water quality. Six sub watersheds (similar in vegetation, soil type, stream size and location, and disturbance history) were located within the Conasauga River Watershed. Four of the sites were burned in Mar. 2001, and two sites were designated as controls. To evaluate initial effects of prescribed burning on water quality, we measured soil solution and streamwater nutrient concentrations and streamwater sediment concentrations (TSS; total suspended solids) weekly over a 10-month period. Consistent with goals of the land managers, all the prescribed fires resulted in low- to moderate-intensity and low-severity fires. Soil solution and streamwater NO3-N and NH4+-N did not increase after burning on any of the sites. We found no differences in TSS between burn and control streams in any of the sample periods. In addition, we found no detectable differences between control and burned sites for concentrations of PO43-, SO42-, Ca2+, Mg2+, K+, or pH in soil solution or streamwater. Thus, these prescribed restoration fires did not have a significant effect on soil solution and stream chemistry or stream sediment (TSS) concentrations. Our results suggest that low-intensity, low severity fires, such as those in this study, could be used as a tool to restore vegetation structure and composition in these mixed pine-hardwood ecosystems without negatively impacting water quality.},
	number = {1},
	journal = {Southern Journal of Applied Forestry},
	author = {Elliott, K.J. and Vose, J.M.},
	year = {2005},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{jones_seasonal_2004,
	title = {Seasonal and successional streamflow response to forest cutting and regrowth in the northwest and eastern {United} {States}.},
	volume = {40},
	url = {http://cwt33.ecology.uga.edu/publications/2218.pdf},
	abstract = {This study examined daily streamflow response over up to four decades in northwest conifer forest and eastern deciduous forest sites in the United States. We used novel methods to analyze daily observations of climate and streamflow spanning more than 900 basin years of record at 14 treated/control basin pairs where forest rem0oval and regrowth experiments were underway in the period 1930-2002. In the 1 to 5-year period after forest removal, maximum daily increases ranged from 2 to 3 mm at deciduous forest sites, to 6 to 9 mm at conifer forest sites. Significant spring surpluses persisted for up to 35 years in conifer forest basins, but winter and spring streamflow deficits appeared after 10 to 15 years of forest regrowth in eastern deciduous forest basins. In all 5-yr posttreatment periods, absolute changes in daily streamflow were significantly more likely during moist, warm seasons, or during snowmelt seasons, but relative changes were more likely during warm seasons irrespective of moisture status. Both relative and absolute streamflow changes in the 1 to 5 and 15 to 25-year periods after forest removal were significantly positively related to the age of the forest at the time it was cut. Eastern deciduous forests had been disturbed by logging or hurricane 12 to 56 years prior to forest removal, while Pacific Northwest conifer forests had been not experienced logging or wildfire for 90 to 450 years. Paired basin experiments provide a continuous, and continuously changing, record of vegetation structure, composition, and climate, and their effects on streamflow.},
	journal = {Water Resources Research},
	author = {Jones, Julia A. and Post, David A.},
	year = {2004},
	keywords = {AND, CWT, HBR, experimental watershed studies}
}

Paper  abstract   bibtex   

@article{brown_impacts_2004,
	title = {Impacts of hemlock woolly adelgid on {Canadian} and {Carolina} hemlock forests.},
	volume = {19-36},
	url = {http://cwt33.ecology.uga.edu/publications/2231.pdf},
	abstract = {This report provides background on the distribution of both Canadian hemlock (Tsuga canadensis) and Carolina hemlock (Tsuga caroliniana) in the southern Appalachian Mountains. It also describes the potential impacts that may affect these distributions as a result of the introduction of hemlock woolly adelgid (Adelges tsugae), an exotic invasive insect. Twelve intensive study plots at Coweeta Hydrologic Laboratory were established earlier for related studies on the impact of hemlock woolly adelgid. For this report, the density and basal area of all woody stems greater than 2.5 cm diameter at breast height were summarized. These baseline data will enable us to determine the impact of hemlock woolly adelgid on stand dynamics in control (hardwood) stands, hemlock plots experiencing mortality due to the hemlock woolly adelgid, and hemlock plots experiencing mortality due to girdling. In addition, 24 stands of Carolina hemlock have been identified and two stands have been measured to include stand basal area and density similar to the methods used in the Canadian hemlock stands.},
	journal = {Land use change and implications for biodiversity on the Highlands plateau},
	author = {Brown, Josh.},
	year = {2004},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{hayden_decadal_2003-1,
	title = {Decadal and century-long changes in storminess at long-term ecological research sites.},
	volume = {14},
	url = {http://cwt33.ecology.uga.edu/publications/2049.pdf},
	abstract = {This paper examines the history of storminess for 19 Long - Term Ecological Research (LTER) sites in the continental United States based on more than a century of data on storms and their storm tracks. Analyses showed that storm frequencies have changed over much of the continental U.S. since 1885 and very large changes in storm frequency are found at most LTER sites. However, when averaged over the entire U.S., no net change in storminess was detected. El Nino/ La Nina variations in storminess were not detected either nationally or regionally.},
	journal = {Greenland, David; Goodin, Douglass G},
	author = {Hayden, Bruce P. and Hayden, Nils R.},
	year = {2003},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{hille_ris_lambers_effects_2003,
	title = {Effects of dispersal, shrubs, and density-dependent mortality on seed and seedling distributions in temperate forests.},
	volume = {33},
	url = {http://cwt33.ecology.uga.edu/publications/2221.pdf},
	abstract = {Processes limiting recruitment of trees may have large impacts on forest dynamics. In this paper, we determined the effects of dispersal, shrubs (Rhododendron maximum), and density-dependent mortality on seed and seedling distributions of Southern Appalachian trees. We quantified the spatial distribution of seed rain, seed bank densities, first-year seedlings, and older than first-year seedlings in five vegetation plots. We fit models to these data assuming effects of limited dispersal, R. maximum (an understory shrub), and (or) density-dependent mortality (as well as a null model with none of these effects) and used best-fitting models to indicate which processes affected a particular species. We found that all factors examined limit species distributions, and thus, affect seedling dynamics. Seedling densities are higher near parent trees long after dispersal occurs. This pattern is less frequently observed for animal-dispersed species than for wind-dispersed species, presumably due to secondary dispersal of seeds by animals. Seedling densities of five species are decreased beneath R. maximum. Shade tolerance does not explain which species are affected, suggesting that factors other than low light are responsible for increased seedling mortality under this shrub. Our results suggest that density-dependent mortality affects four species, decreasing seedling densities close to parent trees. Dispersal, density-dependent mortality, and R. maximum all act in ways that may promote or limit diversity, illustrating that multiple factors are likely to control species diversity.},
	journal = {Canadian Journal Forestry Research},
	author = {Hille Ris Lambers, Janneke. and Clark, James S.},
	year = {2003},
	keywords = {CWT}
}

@article{pregitzer_fine_2002-2,
	title = {Fine root architecture of nine {North} {American} trees.},
	volume = {72},
	abstract = {The fine roots of trees are concentrated on lateral branches that arise from perennial roots. They are important in the acquisition of water and essential nutrients, and at the ecosystem level, they make a significant contribution- to biogeochemical cycling: Fine roots have often been studied according to arbitrary size classes, e.g., all roots less than 1 or 2 mm in  iameter. Because of the size class approach, the position of an individual root on the complex lateral branching system has often been ignored, and relationships between the form of the branching root system and its function are poorly understood. The fine roots of both gymnosperms and angiosperms, which formed ectomycorrhizae .(EM) and arbuscular  ycorrhiz'ae (AM) fungal .associations, were sampled in 1998 and 1999. Study sites were chosen to encompass a wide variety of environments in four regions of' North America. Intact lateral branches were collected from each species and 18561 .Individual roots were dissected by order, with distal roots numbered as first-order roots. This scheme is similar to the one commonly used to number the order of streams. Fine root diameter, length, specific root length (SRL; m/g), and nitrogen (N) concentration of nine North American tree species (Acer saccharum, Juniperus monosperma, Liriodendron tulipifera, Picea glauca, Pinus edulis, Pinus elliottii, Pinus resinosa, Populus balsamifera, and Quercus alba) were then  ompared and contrasted.Lateral roots {\textless}0.5 mm in diameter accounted for {\textgreater}75\% of the total number and length of individual roots sampled in all species except Liriodendron tulipifera. Both SRL and N concentration decreased with increasing root order in all nine species, and this pattern appears to be universal in all temperate and boreal trees. Nitrogen concentrations ranged from 8.5 to 30.9 g/kg and were highest in the first-order "root tips." On a mass basis, firstorder roots are expensive to maintain per unit time (high tissue N concentration). Tissue N appears to be a key factor in understanding the C cost of maintaining first- and secondorder roots, which dominate the display of absorbing root length. There were many significant differences among species in diameter, length, SRL, and N concentration. For example, two different species can have similar SRL but very different tissue N concentrations. Our findings ran contrary to the common idea that all roots of a given size class function the same way and that a common size class for fine roots works well for all species. Interestingly, fine root lateral branches are apparently deciduous, with a distinct lateral branch scar. The position of an individual root on the branching root system appears to be important in understanding the function of fine roots.},
	number = {2},
	journal = {Ecological Monographs},
	author = {Pregitzer, K.S.},
	year = {2002},
	keywords = {BNZ, SEV, CWT}
}

Paper  abstract   bibtex   

@article{elliott_growth_2002,
	title = {Growth of {Eastern} {White} {Pine} ({Pinus} strobus {L}.)  {Related} to {Forest} {Floor} {Consumption} by {Prescribed} {Fire} in the {Southern} {Appalachians}},
	volume = {26},
	url = {http://cwt33.ecology.uga.edu/publications/1490.pdf},
	abstract = {Chainsaw felling, burning, and planting of eastern white pine (Pinus strobus L.) have been prescribed on degraded pine/hardwoods stands in the Southern Appalachians to improve overstory composition and productivity. He desired future condition of the overstory is a productive pine/hardwood mixture, with white pine, which is resistant to southern pine beetle (Dendroctonus frontalis), as the dominant pine. We evaluated the growth of white pine planted after fell-and burn treatments through eight growing seasons after planting on three sites that differed in their fire characteristics and carbon and nitrogen losses. The three sites (JE, JW, and DD) differed in heat penetration and forest floor consumption. Although very little consumption of the Oe+Oa humus layer occurred during burning, consumption of the Oi litter layer was 94\%, 94\%, and 63\% at JE, JW, and DD, respectively. Corresponding to the forest floor layer consumption (Oi and Oe+Oa combined), 46\% of forest floor N was lost at JE, 45\% of forest Floor N was lost at JW, and less than 0.1\% of the forest floor N was lost at DD. Biomass and density of woody competitor species were not significantly related to white pine size or growth. By the eighth growing season, no differences in white pine size or growth were detected between JE and JW, but DD had significantly smaller white pine trees. The size difference between DD and the other two sites was attributed to the replanting of seedlings at DD in 1992. However, relative growth rate (RGR) was significantly higher on DD in 1998 than the other two sites. Eight growing seasons after planting, white pine growth was negatively related to percent Oi layer consumed on the JE and JW sites. We also found significant relationships between white pine RGR and percent Oi consumed using data from all three sites. Although fire severity had a long-term effect on pine growth, fire severity was considered low overall on these sites because there were limited losses from the forest floor Oe+Oa layer. However, white pine increment and RGR were significantly related to percent forest floor Oi mass and N loss. This loss of site N capital could have a significant negative effect on growth of planted white pine over the long term},
	number = {1},
	journal = {Southern Journal of Applied Forestry},
	author = {Elliott, K.J. and Vose, J.M. and Clinton, Barton D.},
	year = {2002},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{elliott_aboveground_2002,
	title = {Aboveground biomass and nutrient accumulation 20 years after clear-cutting a southern {Appalachian} watershed.},
	volume = {32},
	url = {http://cwt33.ecology.uga.edu/publications/1554.pdf},
	abstract = {In 1975, we  initiated a long-term interdisciplinary study of forest watershed ecosystem  response to clear-cutting and cable logging in watershed 7 at the Coweeta  Hydrologic Laboratory in the southern Appalachian Mountains of North Carolina.  This paper describes},
	journal = {Canadian Journal of Forest Research},
	author = {Elliott, K.J. and Boring, L. R. and Swank, W.T.},
	year = {2002},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{walker_nitrogen_2002,
	title = {Nitrogen trace gas emissions from a riparian ecosystem in southern {Appalachia}.},
	volume = {49},
	url = {http://cwt33.ecology.uga.edu/publications/1538.pdf},
	abstract = {In this paper, we present  two years of seasonal nitric oxide (NO), ammonia (NH3), and nitrous oxide (N2O)  trace gas fluxes measured in a recovering riparian zone with cattle excluded and  adjacent riparian zone grazed by cattle. In the recovering riparian zone,  average NO, NH3, and N2O fluxes were 5.8, 2.0, and 76.7 ng N m(-2) s(-1) (1.83,  0.63, and 24.19 kg N ha(-1) y(-1)), respectively. Fluxes in the grazed riparian  zone were larger, especially for NO and NH3, measuring 9.1, 4.3, and 77.6 ngN  m(-2) s(-1) (2.87, 1.35, and 24.50 kg N ha(-1) y(-1)) for NO, NH3, and N2O,  respectively. On average, N2O accounted for greater than 85\% of total trace gas  flux in both the recovering and grazed riparian zones, though N2O fluxes were  highly variable temporally. In the recovering riparian zone, variability in  seasonal average fluxes was explained by variability in soil nitrogen (N)  concentrations. Nitric oxide flux was positively correlated with soil ammonium  (NH4+) concentration, while N2O flux was positively correlated with soil nitrate  (NO3-) concentration. Ammonia flux was positively correlated with the ratio of  NH4+ to NO3-. In the grazed riparian zone, average NH3 and N2O fluxes were not  correlated with soil temperature, N concentrations, or moisture. This was likely  due to high variability in soil microsite conditions related to cattle effects  such as compaction and N input. Nitric oxide flux in the grazed riparian zone  was positively correlated with soil temperature and NO3- concentration.  Restoration appeared to significantly affect NO flux, which increased  approximate to600\% during the first year following restoration and decreased  during the second year to levels encountered at the onset of restoration. By  comparing the ratio of total trace gas flux to soil N concentration, we show  that the restored riparian zone is likely more efficient than the grazed  riparian zone at diverting upper-soil N from the receiving stream to the  atmosphere. This is likely due to the recovery of microbiological communities  following changes in soil physical characteristics.},
	number = {10},
	journal = {Chemosphere},
	author = {Walker, John T. and Geron, Christopher D. and Vose, J.M. and Swank, W.T.},
	year = {2002},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{knoepp_quantitative_2002,
	title = {Quantitative comparison of {In} {Situ} soil {CO}2 flux measurement methods.},
	volume = {28.},
	url = {http://cwt33.ecology.uga.edu/publications/1522.pdf},
	abstract = {Development of reliable regional or global carbon budgets  requires accurate measurement of soil CO$_{\textrm{2 }}$flux. We conducted  laboratory and field studies to determine the accuracy and comparability of  methods commonly used to measure \textit{in situ} soil CO$_{\textrm{2 }}$fluxes.  Methods compared include two static techniques, sodium hydroxide (NaOH) and soda  lime as CO$_{\textrm{2}}$ traps; a multichamber open dynamic system (OC) with an  infrared gas analyzer; and a headspace analysis system, with gas chromatograph  with circulating fan (GCF) and gas chromatograph without circulating fan (GC),  measuring changes in headspace CO$_{\textrm{2}}$ concentration using a gas  chromatograph. In the laboratory, we compared NaOH, OC, GCF, and GC using  sand-filled cylinders to simulate a soil system. Three concentrations of  standard CO$_{\textrm{2}}$ gas (representing low, medium, and high soil-CO$_{\textrm{2}}$  flux rates) entered the cylinders through individually monitored flow meters.  Flux rates measured using OC method equaled the actual CO$_{\textrm{2 }}$flux at  all three CO$_{\textrm{2 }}$concentrations. Flux rates determined with GC and GCF  were \<55 percent of the actual flux rate. The percent of actual CO$_{\textrm{2}}$  flux measured increased with increasing CO$_{\textrm{2}}$ concentrations. At all  concentrations, NaOH collect between 40 and 47 percent of CO$_{\textrm{2}}$  entering the system.\  A field study was conducted to verify laboratory results  and allow comparison with the soda lime trap (SODA) method. In laboratory and  filed studies, all methods detected significant differences in flux rates among  the standard CO$_{\textrm{2 }}$concentrations and field sites. Regression analyses  showed good relationships between NaOH, SODA, and GC methods with flux rates  measured using the OC methods (r$^{\textrm{2 }}$\&\#8805; 0.78). Slope values for these  regression equations ranged from 0.34 for NaOH to 0.54 for GC and SODA. These  results suggest that data collected using the other methods could be  standardized to OC flux rates. However, because methodological differences  significantly affect CO$_{\textrm{2 }}$flux measurements, care should be used in  applying these relationships.},
	journal = {USDA Forest Service, Southern Research Station},
	author = {Knoepp, Jennifer D. and Vose, J.M.},
	year = {2002},
	keywords = {CWT}
}

@article{a.j._burton_root_2002,
	title = {Root respiration in {North} {American} forests: effects of nitrogen concentration and temperature across biomes.},
	abstract = {Root respiration rates have been shown to be correlated with temperature, and root N concentration in studies of individual forest types or species, but it is not known how universal these relationships are across forest species adapted to widely different climatic and edaphic conditions. In order to test for broad, cross-species relationships, we measured fine root  respiration, as O2 consumption, over a range of temperatures on excised root samples from ten forested study sites across North America in 1997. Significant differences existed among study sites in root respiration rates, with patterns among sites in respiration rate at a given temperature corresponding to differences among sites in fine root N concentrations. Root respiration rates were highly correlated with root N concentrations at all measurement temperatures (r2{\textgreater}0.81, P{\textless}0.001, for 6, 18 and 24},
	author = {A.J. Burton, R.W. Ruess, R.L. Hendrick, M.F. Allen, K.S. Pregitzer},
	year = {2002},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{johnson_nearly_2002-1,
	title = {Nearly a {Forest} {Paradise}: {Copper} {Basin} {Prior} to 1800},
	url = {http://cwt33.ecology.uga.edu/publications/2173.pdf},
	abstract = {In the lasf issue the author detailed the industrial destruction caused by mining and smelting operations in the Copper Basin region of-southern Kentucky on the Georgia border, and the restoration efforts that have reclaimed much of the area's viability as a forest. In this article he describes what the Copper Basin ecosystem looked like prior to 1800.},
	author = {Johnson, E. A.},
	year = {2002},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{wright_responses_2002,
	title = {Responses of soil microbial biomass, nematode trophic groups, {N}-mineralization, and litter decomposition to disturbance events in the southern {Appalachians}},
	volume = {34},
	url = {http://cwt33.ecology.uga.edu/publications/1493.pdf},
	abstract = {Seasonal measurements of soil microbial biomass, nematode trophic groups, net N-mineralization, net nitrification, net ammonification, litter decomposition, and soil respiration rates were examined to assess the effects of rhododendron (Rhododendron maximum L.) removal and hurricane windthrow upon these factors. Comparisons of pre- and post-disturbance quantities of soil microbial biomass carbon ranged from 503 to 1080},
	journal = {Soil Biology \& Biochemistry},
	author = {Wright, C.J. and Coleman, D.C.},
	year = {2002},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{hunter_insect_2001,
	title = {Insect population dynamics meets ecosystem ecology: effects of herbivory on soil nutrient dynamics.},
	volume = {3},
	url = {http://cwt33.ecology.uga.edu/publications/1423.pdf},
	abstract = {In reality, the idea that insect herbivores may regulate nutrient availability and primary production has no fundamental link with theories of mutualism or plant fitness. Plant productivity is measured in different units (carbon per m2 per year) and at a different level of organization (the community) than is fitness (proportional representation in the next generation measured at the level of individual plants). Theories of herbivore-mediated changes in nutrient cycling need not be found guilty by association with controversial views of herbivores as mutualists.  Given the recent interest in the role of species in ecosystems (Jones \& Lawton, 1995) and publications by Schowalter (2000) and Belovsky \& Slade (2000), it is worth re-examining potential effects of insect herbivores on ecosystem function. The discussion that follows is limited to the effects of foliar-feeding herbivores on soil nutrient dynamics and subsequent productivity. Effects of wood-boring insects on nutrient dynamics are well documented (e.g. Dale et al., 1990) and, although root feeding insects can influence nutrients in soils (Maron \& Connors, 1996; Maron \& Jefferies, 1999; Hunter 2001), the effects of below-ground fauna on nutrient dynamics are a whole other can of worms, so to speak. In addition, although the focus of this article will be insect folivores, I beg your indulgence if a few four-legged and eight-legged herbivores make brief appearances to illustrate an occasional ecological principle.},
	journal = {Agricultural and Forest Entomology},
	author = {Hunter, Mark D.},
	year = {2001},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{andre_rebuttal_2001,
	title = {Rebuttal letter re: {Skilled} eyes are needed to go studying the richness for the soil.},
	volume = {409},
	url = {http://cwt33.ecology.uga.edu/publications/3.pdf},
	abstract = {Rebuttal Letter re: Copley; 2000. Journal Nature. 406, 452.},
	journal = {Nature},
	author = {Andre, Henri. and Ducarme, Xavier. and Anderson, Jo. and Crossley, David. and Koehler, Hartmut. and Paoletti, Maurizio. and Walter, David. and Lebrun, Philippe.},
	year = {2001},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{maritn_denitrification_2001,
	title = {Denitrification potential in sediments of headwater streams in the southern {Appalachian} mountains, {USA}.},
	volume = {20},
	url = {http://cwt33.ecology.uga.edu/publications/2054.pdf},
	abstract = {We investigated variations in resource availability (NO3-N and labile organic C [LOC]) as determinants of potential denitrification in stream sediments in the southern Appalachian Mountains, USA. Stream water and sediments were sampled seasonally in 2 streams of contrasting NO3-N availability, Noland Creek (high NO3-N) and Walker Branch (low NO3-N). Eight additional streams with varying NO3-N levels were sampled once during summer. Stream sediments were incubated at ambient stream temperatures, and nitrous oxide accumulation was quantified following acetylene inhibition of nitrous oxide reduction. Denitrification potential was greater in Noland Creek than Walker Branch. In autumn and spring, NO3-N and LOC amendments indicated that denitrification potential in Walker Branch sediments was NO3-N limited, whereas temperature had no effect on rates. Denitrification potential in Noland Creek sediments was not limited by NO3-N or LOC, but was significantly affected by season and temperature. However, no differences in denitrification potential were detected when Noland Creek seasonal data were adjusted to a common temperature. NO3-N in the 10 surveyed streams ranged from 10 to 549},
	number = {4},
	journal = {Journal of the North American Benthological Society},
	author = {Maritn, Lara A. and Mulholland, Patrick J. and Webster, J.R. and Valett, H.M.},
	year = {2001},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{siler_long-term_2001,
	title = {Long-term effects of resource limitation on stream invertebrate drift.},
	volume = {58},
	url = {http://cwt33.ecology.uga.edu/publications/1439.pdf},
	abstract = {We examined the effects of resource limitation on stream invertebrate drift by reducing inputs of terrestrial detritus to a headwater stream in western North Carolina. In the treatment stream, leaf-litter was excluded for 6 years (September 1993},
	journal = {Canadian Journal of Fisheries and Aquatic Sciences},
	author = {Siler, Edward R. and Wallace, J. B. and Eggert, S.L.},
	year = {2001},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{clark_estimation_2001,
	title = {On the estimation of spread rate for a biological population.},
	volume = {51},
	url = {http://cwt33.ecology.uga.edu/publications/1.pdf},
	abstract = {We propose a nonparametric estimator for the rate of spread of an introduced population. We prove that the limit distribution of the estimator is normal or stable, depending on the behavior of the moent generating function. We show that resampling methods can also be used to approximate the distribution of the estimators.},
	journal = {Statistics \& Probability Letters},
	author = {Clark, Jim. and Horvath, Lajos. and Lewis, Mark.},
	year = {2001},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{diamond_hard_2000,
	title = {Hard {Mast} {Production} {Before} and {After} the {Chestnut} {Blight}.},
	volume = {24},
	url = {http://cwt33.ecology.uga.edu/publications/2228.pdf},
	abstract = {We estimated hard mast production of a Southern Appalachian forest for two 10 year intervals: one before and one, 35 years after, the chestnut blight fungus (Cryphonectria parasitica) (Murr.) Barr, had killed all mature chestnut trees.  The basal area of hard mast-producing trees in the postblight forest was 28\% less than in the preblight forest.  The estimate of hard mast output was 34\% less after the chestnut blight.  Postblight production was less than preblight production for 8 of 10 years.  During 5 of these years, postblight production was only 5-27\% of preblight production.  Annual preblight mast production was relatively stable, whereas annual postblight production fluctuated substantially.  Our findings suggest that the loss of mature chestnuts (Castanea dentata) markedly reduced the Southern Appalachian forest's carrying capacity for certain wildlife species.},
	number = {4},
	journal = {Southern Journal of Applied Forestry},
	author = {Diamond, Seth J. and Giles, Robert H. Jr. and Kirkpatrick, Roy L. and Griffin, Gary J.},
	year = {2000},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{kloeppel_leaf-level_2000,
	title = {Leaf-level resource use for evergreen and deciduous conifers along a resource availability gradient.},
	volume = {14},
	url = {http://cwt33.ecology.uga.edu/publications/1397.pdf},
	abstract = {*We compared leaf-level carbon, nitrogen and water use for a deciduous (Larix occidentalis Nutt.) and sympatric evergreen (Pseudotsuga menziesii, Beissn., Franco, or Pinus contorta Engelm.) confer along a resource availability gradient spanning the natural range of L. occidentalis in western Montana, USA. * We hypothesized that leaf photosynthesis (A), respiration (r), specific leaf area (SLA) and foliar nitrogen concentration (N) would be higher for deciduous than sympatric evergreen conifers in mixed stands, and that these interspecies differences would increase from high to low resource availability. We also hypothesized that leaf-level nitrogen and water-use efficiency would be higher for the co-occurring evergreen conifer than L. occidentalis. *In general, mass-based photosynthesis (Am) was significantly higher for L. occidentalis than co-occurring evergreen conifers in the drier sites, but Am was similar for evergreen and deciduous conifers at the mesic site. *Mass-based foliar nitrogen concentration (Nm) was positively correlated to SLA for all species combined across the gradient (R2 = 0+64), but the relationship was very weak (R2 = 0+08},
	journal = {Functional Ecology},
	author = {Kloeppel, B.D. and Gower, S.T. and Vogel, J.G. and Reich, P. B.},
	year = {2000},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{crossley_microarthropods._1999,
	title = {Microarthropods.},
	volume = {59-C65.},
	url = {http://cwt33.ecology.uga.edu/publications/24.pdf},
	abstract = {Soil microarthropods are a major fraction of the mesofauna, namely, those arthropods with body widths ranging between approximately 0.1 and 2 mm, and body lengths between 0.2 mm and 10 mm. This scheme of classification, although imprecise, is practical, defined by the method of sampling.  Microarthropods are sampled by collecting a fragment of habitat (e.g., a soil core) and extracting them from it, macroarthropods are collected by hand sorting, pitfall trapping, or other methods dealing with individuals. Microarthropods are dominated by two groups; the mites (Acari) and the springtails (Insect order Collembola). Together, mites and springtails account for about 90\% of the microarthropods in most soil systems. Also included in this group, among other, are the Protura, Pauropoda, dipteran larvae, small spiders, pseudoscorpions, some Homoptera and Coleoptera, and thrips.  Immature stages of many insect Orders are collected from soil samples, and  some may be considered microarthropods for purposes of a particular study.  These minor groups typically constitute less than 10\% of  the total number of microarthropods Numbers of microarthropods in soil systems range upwards to 2000,000 m-2 or more. Forested systems generally support higher microarthropod population densities than do grasslands, deserts, or agricultural systems, with densities being higher in soils from temperate that tropical forests, and coniferous than deciduous forests. Soils in agroecosystems may have sparse populations, although numbers increase under conservation tillage management.  Together with protozoans, nematodes and other small soil fauna, the microarthropods make up a food web of several trophic levels, driven by energy sources from decomposing residues and mobilizing nutrient elements.},
	journal = {Malcom E},
	author = {Crossley, DA and Coleman, D.C.},
	year = {1999},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{vose_challenges_1999,
	title = {Challenges to modeling {NPP} in diverse eastern deciduous forests: species-level comparisons of foliar respiration response to temperature and nitrogen},
	volume = {122},
	url = {http://cwt33.ecology.uga.edu/publications/1417.pdf},
	abstract = {Modelling net primary production (NPP) in eastern deciduous forests has usually been conducted with coarse scale models that lump or simplify physiological processes. Foliar respiration (Rd) is a physiological process in forest ecosystem C cycling; however, there are very few data on leaf respiration (Rd) for deciduous hardwood species. As a result, leaf Rd is one of the most superficially treated processes in NPP models. We hypothesize that these data are critical for understanding patterns of net primary production and for parameter zing C cycling models in diverse eastern deciduous hardwood forests. Our objectives were: (1) to determine differences in leaf Rd for seven hardwood species (Acer rubrum, Liriodendron tulipifera, Quercus alba, Quercus coccinea, Quercus rubra, Quercus prinus and Carya glabra) common to the canopy of southern Appalachian forests; and (2) to evaluate the effects of using},
	journal = {Ecological Modelling},
	author = {Vose, J.M. and Bolstad, P. V.},
	year = {1999},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{reich_generality_1999-2,
	title = {Generality of leaf trait relationships: a test across six biomes.},
	volume = {80},
	url = {http://cwt33.ecology.uga.edu/publications/49.pdf},
	abstract = {Covergence in interspecific leaf trait relationships across diverse taxonomic groups and biomes would have important evolutionary and ecological implications.  Such convergence has been hypothesized to result from trade-offs that limit the combination of plant traits for any species.  Here we address this issue by testing for biome differences in the slope and  intercept of interspecific relationships among leaf traits: longevity, net photosynthetic capacity (Amax), leaf diffusive conductance (Gs), specific leaf area (SLA), and nitrogen (N) status, for more than 100 species in six distinct biomes of the Americas.  The six biomes were: alpine tundra-subalpine forest ecotone, cold temperate forest-prairie ecotone, montane cool temperate forest, desert shrubland, subtropical forest, and tropical rain forest.  Despite large differences in climate and evolutionary history, in all biomes mass-based leaf N (Nmass), SLA, Gs, and Amax were positively related to one another and decreased with increasing leaf life span.  The relationships between pairs of leaf traits exhibited similar slopes among biomes, suggesting a predictable set of scaling relationships among key leaf morphological, chemical, and metabolic traits that are replicated globally among terrestrial ecosystems regardless of biome or vegetation type.  However, the intercept (i.e., the overall elevation of regression lines) of relationships between pairs of leaf traits usually differed among biomes.  With increasing aridity across sites, species had greater Amax for a given level of Gs and lower SLA for any given leaf life span.  Using principal components analysis, most variation among species was explained by an axis related to mass-based leaf traits (Amax, N, and SLA) while a second axis reflected climate, Gs, and other area-based leaf traits.},
	number = {6},
	journal = {Ecology},
	author = {Reich, P. B. and Ellsworth, D.S. and Walters, Michael B. and Vose, J.M. and Gresham, Charles. and Volin, John C. and Bowman, W. D.},
	year = {1999},
	keywords = {CWT, CDR}
}

Paper  abstract   bibtex   

@article{elliott_changes_1998,
	title = {Changes in vegetation structure and diversity after grass-to-forest succession in a southern {Appalachian} watershed.},
	url = {http://cwt33.ecology.uga.edu/publications/2061.pdf},
	abstract = {To document how species richness and diversity (H') recover from severe large-scale disturbance, we report temporal patterns of species composition and diversity following grass-to-forest succession from a long-term experiment in the Coweeta Basin, western North Carolina. The original experiment-clear-cutting, 5 yr of grass cover followed by a herbicide treatment, and abandonment in a Southern Appalachian mixed deciduous forest-represents the most severe human disturbance in the Coweeta Basin. For several years after cessation of management, Robinia pseudoacacia quickly sprouted from roots and exceeded the growth rates of other species. Liriodendron tulipifera increased in density and basal area because of its prolific seedling establishment and rapid growth rate. Regeneration of large seeded species was mixed-sparse for Quercus rubra and Q. coccinea and nonexistent for Q. prinus and Q. velutina. In the overstory, density-based H' increased from 1958, before grass conversion, to 15 yr and 28 yr following disturbance. In contrast, basal area-based H' had significantly declined at 15 yr, then increased at 28 yr. The initial decline in basal area-based H' was attributed to a decline in evennness of species distribution (J') rather than to a change in species richness. The severe disturbance increased the abundance of early suc-cessional woody species and of herbaceous genera that tolerate open habitats, such as Erichtites, Phytolacca, and Erigeron. Shade-tolerant understory ferns and herbs such as Polystichum acrostichoides, Dennstaedtia punctilobula, Galium latifolium and Viola cucullata gradually became more abundant. The 28-yr-old forest of WS6 had much lower species richness than the adjacent reference watersheds, but more than threefold higher density.},
	author = {Elliott, L.R. Boring, W.T. Swank {and} B.R. Haines., K.J.},
	year = {1998},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{post_new_1998-1,
	title = {New developments in ecological hydrology expand research opportunities.},
	volume = {79(43). 517, 526.},
	url = {http://cwt33.ecology.uga.edu/publications/26.pdf},
	abstract = {Ecological hydrology is defined as the study of hydrological processes such as flow rates, timing, and pathways of water at various time scales as they influence ecological processes.  Data sets from Long Term Ecological Research sites were used to compare hydrologic processes in several very different ecosystems. Strong seasonal cycles of precipitation at some sites and its asynchronous timing relative to evapotranspiration rates results in seasonal streamflow patterns very different form those at Coweeta where precipitation is uniformly distributed and seasonal streamflow is controlled by summer evapottranspiration. Article reports a study and workshop comparing the hydrologic records at 8 LTER sites and 6 other locations.},
	author = {Post, D. A. and Grant, G.E. and Jones, J A},
	year = {1998},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{harper_terrestrial_1998,
	title = {A terrestrial vacuum sampler for macroinvertebrates.},
	volume = {26},
	url = {http://cwt33.ecology.uga.edu/publications/52.pdf},
	abstract = {Macoinvertebrate abundance and biomass is an important consideration when managing upland game birds.  Although several techniques have been employed sampling macroinvertebrate communities,  the advantages of sampling with a vacuum sampler are discussed.  Instructions are given on modifying a blower/vac into a vacuum sampler for macroinvertebrates.  Cost efficiency, ease of use and increased mobility make this vacuum sampler more attractive than the D-vac sampler.  Potential value as a sampling tool for other ecological data, such as salamander density and mast abundance, make this sampler a useful tool for a variety of sampling situations.},
	number = {2},
	journal = {Wildlife Society Bulletin},
	author = {Harper, Craig A. and Guynn, David. C.},
	year = {1998},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{baker_relations_1998,
	title = {Relations between density of rhododendron thickets and diversity of riparian forests.},
	volume = {109},
	url = {http://cwt33.ecology.uga.edu/publications/51.pdf},
	abstract = {Rosebay rhododendron (Rhododendron maximum L.) is increasing its range and abundance in understories of southern Appalachian forests, reducing species richness, and altering patterns of succession.  This study characterized the density and biomass attributes of R. maximum thickets and examined their effects on plant species richness, percent cover, and regeneration patterns within a southern Appalachian riparian ecosystem. R. maximum reached densities exceeding 17,000 stems ha-1 with biomass reaching 34 Mg ha-1. Species richness and percent cover in the regeneration layer were inversely related to R. maximum thicket density in both Spring and Fall samplings.  On average, 6 plant species were found on plots with high R. maximum stem density as compared to 26 species found on plots with lower stem density. The regeneration layer was dominated by R. maximum with only low numbers of tree species present.  Both woody and herbaceous species regenerated poorly under the dense canopy of these thickets.  Based on the age of cut stems, R. maximum became increasingly dominant in the understory of Wine Spring Creek over the last three decades.  Its proliferation is altering the richness of riparian forests and changing historical patterns of community succession.},
	journal = {Forest Ecology and Management},
	author = {Baker, T.T. and Van Lear, D.H.},
	year = {1998},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{elliott_successional_1997,
	title = {Successional changes in plant species diversity and composition after clearcutting a southern {Appalachian} watershed.},
	volume = {92},
	url = {http://cwt33.ecology.uga.edu/publications/2060.pdf},
	abstract = {Watershed 7, a southwest-facing watershed in the Coweeta Basin, western North Carolina, USA, was clearcut in 1977. Twenty-four permanent plots were inventoried in 1974 before cutting and in 1977, 1979, 1984, and 1993 after clearcutting. This study evaluates changes in species diversity during early succession after clearcutting and differences in overstory tree and ground flora response to disturbance by clearcutting and their interaction with previous disturbances and subsequent stand development. To quantify species diversity, we computed Shannon-Weaver's index of diversity (\#') and Pielou's evenness index (/'). Woody species diversity remained relatively stable; however, woody species richness increased in the cove-hardwoods and hardwood-pines, but remained relatively constant in the mixed-oak hardwoods. Although revegetation was rapid, forest composition has changed through succession. Opportunistic species, such as Liriodendron tulipifera, Robinia pseudoacacia, and Acer rubrum, increased in abundance, whereas Quercus velutina, Carya spp., and Q. rubra decreased. Ground flora diversity declined in the cove-hardwoods and mixed-oak hardwoods communities, but the decrease in the hardwood-pines was not significant. The abundance (g biomass m{\textasciitilde}2) of ground flora was much lower in 1993 than in 1984; 79\% less in the cove-hardwoods, 90\% less in the mixed-oak hardwoods, and 79\% less in the hardwood-pines. Watershed 7 is apparently in a transition state between early and late Successional species abundance. Early successional, shade-intolerant species, such as Erechtites, Solidago, Eupatorium, Panicum, and Aster, have declined, whereas late successional, shade-tolerant species, such as Viola, Galium, Sanguinaria, Uvularia, and Veratrum are not yet well established.},
	journal = {Forest Ecology and Management},
	author = {Elliott, K.J.},
	year = {1997},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{wallace_multiple_1997,
	title = {Multiple {Trophic} {Levels} of a {Forest} {Stream} {Linked} to {Terrestrial} {Litter} {Inputs}},
	volume = {227},
	url = {http://cwt33.ecology.uga.edu/publications/195.pdf},
	abstract = {The importance of terrestrial-aquatic linkages was evaluated by a large scale, 3-year exclusion of terrestrial leaf litter inputs to a forest stream.  Exclusion of leaf litter has a strong bottom-up effect that propagates through detritivores to predators.  Most invertebrate taxa in the predominant habitat declined in either abundance, biomass, or both, compared to taxa in a nearby reference stream.   However, fauna in moss habitats changed little, indicating different food webs exist in regions of different geomorphology.  This study is the first to demonstrate ecosystem-level consequences of excluding detrital inputs to an ecosystem and has implications for watershed and riparian zone management.},
	journal = {Science},
	author = {Wallace, J. B.},
	year = {1997},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{olson_bayesian_1997,
	title = {Bayesian {Procedures} for {Discriminating} {Among} {Hypotheses} {With} {Discrete} {Distributions}: {Inheritance} in the {Tetraploid} {Astilbe} biternata},
	volume = {147},
	url = {http://cwt33.ecology.uga.edu/publications/32.pdf},
	abstract = {Discrimination between disomic and tetrasomic inheritance aids in determining whether tetraploids originated by allotetraploidy or autotetraploidy, respectively. Past assessments of inheritance in tetraploids have used analyses whereby each inheritance hypothesis is tested independently. I present a Bayesian analysis that is appropriate for discriminating among several inheritance hypotheses and can be used in any case where hypotheses are defined by discrete distributions. The Bayesian approach incorporates prior knowledge of the probability of occurrence of disomic and tetrasomic hypotheses so that the results of the analysis are not biased by the fact that there is a single tetrasomic hypotheses and multiple disomic hypotheses. This analysis is used to interpret data from crosses in the tetraploid Astilbe biternata, a herbaceous plant native to the southern Appalachians. The progeny ratios from all crosses favored the hypothesis of disomic inheritance at both the PGM and  slow-PGI loci. These results support earlier cytogenetic evidence for the allotetraploid origin of Astilbe biternata.},
	journal = {Genetics Society of America},
	author = {Olson, Matthew S.},
	year = {1997},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{vose_using_1997,
	title = {Using fire to restore pine/hardwood ecosystems in the southern {Appalachians} of {North} {Carolina}.},
	url = {http://cwt33.ecology.uga.edu/publications/2063.pdf},
	abstract = {Our objective is to compare the effectiveness of the fell and burn method with stand replacement techniques for restoring pine/hardwood ecosystems in the southern Appalachians of North Carolina. This is accomplished by comparing pine regeneration and overstory composition among an unburned reference site, a 13-yr-old fell and burn site, a 25-yr-old wildfire site, and a stand replacement fire site. We also briefly compare the effects of burning on aboveground nitrogen (N) pools.},
	journal = {Proceedings - Fire Effects on Rare and Endangered Species and Habitats Conference},
	author = {Vose, J.M.},
	year = {1997},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{grubaugh_longtitudinal_1996,
	title = {Longtitudinal changes of macroinvertebrate communities along an {Appalachian} stream continuum.},
	volume = {53},
	url = {http://cwt33.ecology.uga.edu/publications/189.pdf},
	abstract = {Richness and mean annual abundance and biomass of benthic taxa were measured in prevalent habitats along a first-through seventh-order stream continuum in the southern Appalachian Mountains (United States).  Richness was greatest in midorder reaches, and benthic densities were highest in cobble habitat, followed by bedrock, pebble-gravel, and depositional areas.  Abundance-based estimates of function feeding-group composition were dominated by collector-gatherers and changed little with habitat.  In contrast, biomass-based estimates differed greatly among habitats: collector-filterers generally dominated cobble and bedrock areas; collector-gatherers, in pebble-gravel; and shredders and collector-gatherers, in depositional habitats.  When functional-group biomass estimates were weighted for relative habitat availability along the continuum, patterns of benthic community composition generally matched predictions of the river continuum concept (RCC), although localized changes in stream geomorphology also influenced community structure.  Habitat-weighted abundance estimates did not produce similar trends.  Because RCC predictions are based on benthic biomass, caution and qualification must be exercised when using abundance data to test RCC predictions.},
	journal = {Canadian Journal of Fisheries and Aquatic Sciences},
	author = {Grubaugh, J.W.},
	year = {1996},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{whiles_macroinvertebrate_1995,
	title = {Macroinvertebrate production in a headwater stream during recovery from anthropogenic disturbance and hydrologic extremes.},
	volume = {52},
	url = {http://cwt33.ecology.uga.edu/publications/220.pdf},
	abstract = {Recovery of the macroinvertebrate community inhabiting a headwater stream that received 3 years of seasonal insecticide treatment was investigated. Estimates of abundance, biomas, and production in C54 during 1989 and 1990 were compared with those of a nearby undisturbed reference stream, and those of C54 during a pretreatment year.  Total macroinvertebrate abundance was similar throughout pretreatment, treatment, and recovery periods of C54.  In contrast, biomass and production, which decreased during treatment, increased to levels similar to those of C54 in the pretreatment year and those of the reference stream during recovery.  By 1990, the functional structure of C54 was similar to that of C55 and that of C54 before treatment.  However, taxonomic and developmental state differences within some functional groups, particularly shredders, persisted.  Despite poor recovery of some larger shredder taxa, rapid recovery of a relatively small trichopteran shredder, lepidostoma spp., contributed signifi- cantly to recovery of ecosystem processes associated with shredders. Relationships between shredder biomass and coarse particulate organic matter differed during treatment and recovery periods.  Invertebrate taxa with shorter life cycles recolonized rapidly, while those with life cycles {\textgreater} 1 year generaly displayed limited recovery.  Hydrologic extremes during treatment (drought) and recovery (wet) periods affected organic matter and macroinvertebrate community dynamics in both streams, and may have influenced observed recovery patterns.},
	journal = {Canadian Journal of Fisheries and Aquatic Sciences},
	author = {Whiles, M.R. and Wallace, J. B.},
	year = {1995},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{vose_factors_1994,
	title = {Factors influencing the amount and distribution of leaf area of pine stands.},
	volume = {43},
	url = {http://cwt33.ecology.uga.edu/publications/328.pdf},
	abstract = {Leaf area index (LAI) of forest ecosystems determines rates of energy and material exchange between plant canopies and the atmosphere. Considerable variation exists in the value and timing of maximum LAI in pine stands. Maximum LAI (total) varied from 5 to 30 across a rang of species and environments and this was reached 8 to 50 yrs after stand establishment.  The variation in maximum LAI was related to multiple factors including site quality (climate and soils) and shade tolerance. Timing differences appear to be related to growth rates and stocking/stand density relationships. Rapid growth rates, well stocked stands, and warm climates result in the earliest canopy closure. Nitrogen most commonly limits LAI, although water can limit LAI in arid environments. Other nutrients may also limit LAI but have been less extensively studied. Seasonal dynamics vary considerably among pines and this is due to species dependent differences in foliar longevity. species with relatively few foliage age classes are the most dynamic seasonally and are most responsive to environmental fluctuations. Among several pine species, vertical LAI distribution in closed canopies follows a normal distribution.},
	journal = {Ecol},
	author = {Vose, J.M.},
	year = {1994},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{swift_where_1994,
	title = {Where is bankfull in small southern {Appalachian} stream channels?},
	volume = {S.},
	url = {http://cwt33.ecology.uga.edu/publications/2196.pdf},
	abstract = {The identification of bankfull width and bankfull depth is an important first step in some stream classification systems (e.g., Rosgen's). However, past application of traditional criteria to define bankfull for Appalachian streams has yielded questionable results. Ten gaged streams in the Nantahala Mountains of Western North Carolina were surveyed to identify apparent bankfull depth near each gaging site. Estimated bankfuil discharge was calculated for the measured cross-sections and compared with estimates of bankfull discharge derived from annual peak flow distributions based on the record at each weir. On these streams, the maintenance of channel morphology by bankfull flow appears to be a function of both the magnitude of high flow and the duration of that flow. A subset of field criteria for identifying the bankfull depth on the channel wall was found to produce the most consistent results for Appalachian Mountain streams.},
	journal = {Riparian Ecosystmes in the Humid U},
	author = {Swift, L.W.},
	year = {1994},
	keywords = {CWT}
}

Paper  bibtex   

@article{britton_anthracnose_1993,
	title = {Anthracnose infection of {Dogwood} seedlings exposed to natural inoculum in western {North} {Carolina}},
	volume = {77 No.1},
	url = {http://cwt33.ecology.uga.edu/publications/2118.pdf},
	journal = {Plant Disease Vol},
	author = {Britton, K.O.},
	year = {1993},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{smith_modeling_1993,
	title = {A modeling study of rainfall rate-reflectivity relationships.},
	volume = {29},
	url = {http://cwt33.ecology.uga.edu/publications/495.pdf},
	abstract = {Power law models relate radar reflectivity to rainfall rate. Two interrelated problems are associated with these models: (1) estimation of parameters and (2) assessment of the accuracy of rainfall rate estimates. A statistical model provides explicit representations of power law model parameter estimates and the error of rainfall rate-reflectivity relationships in terms of raindrop processes.  Empirical analyses are carried out using drop size data from a number of sites.  Detailed analyses use a data set from Mooney Gap at Coweeta.},
	number = {8},
	journal = {Water Resources Research4},
	author = {Smith, J. A.},
	year = {1993},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{elliott_site_1993,
	title = {Site preparation burning ot improve southern {Appalachian} pine-hardwood stands: photosynthesis, water relations, and growth of planted {Pinus} strobus {L}.  during establishment.},
	volume = {23},
	url = {http://cwt33.ecology.uga.edu/publications/1015.pdf},
	abstract = {We examined the physiological performance and growth of Pinustrobus L. seedlings the first growing season after planting on two clearcut and burned sites in the southern Appalachians.  Growth of the seedlings was related to physiological measurements (net photosynthesis(P\_N\_), transpiration, leaf conductance, and xylem water potential), soil water, foliar N, seedling temperature, and light environment using regression analysis. Diameter growth increased with increasing foliar N concentration and decreased as competitorbiomass increased.  Competition reduced growth by lowering foliar N, shading seedlings, and possibly reducing photosynthetic capacity.  Increased temperature and lower available soil water may obscure these relationships on a harsh site.},
	journal = {Journal of Forest Research},
	author = {Elliott, K.J.},
	year = {1993},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{dangelo_natural_1992,
	title = {Natural and constrainment-induced factors influencing the breakdown of dogwood and oak leaves},
	volume = {1992. Kluwer Academic Publishers. Printed in Belgium.},
	url = {http://cwt33.ecology.uga.edu/publications/2127.pdf},
	abstract = {Breakdown rates and microbial colonization patterns of dogwood and oak leaves were measured between November and June of 1987-88 and 1988-89. Leaves were placed in artificial streams loose (unconstrained), in bags, or in packs. Discharge was maintained at approximately 0.25 I s " 1 , and no shredders were present in the streams. Average microbial biomass as ATP, for all species and treatments, increased from near 0 mg g{\textasciitilde} ' AFDW in November to over 8 mg g{\textasciitilde} l AFDW in June. Microbial respiration increased from about 0.01 {\textasciicircum}g glucose respired hr-g{\textasciitilde} ' AFDW in November to about 0.03 {\textasciicircum}g hrg{\textasciitilde} ' AFDW in June. Microbial biomass and activity were significantly greater on dogwood leaves than on oak leaves. Dogwood and oak leaf breakdown rates were fastest when unconstrained. -0.0034 and -0.0027 degree-day"' respectively. Breakdown rates of dogwood leaves were faster in bags (-0.0025 degree-day"') than in packs (-0.0015 degree-day"') while rates of oak leaves were not significantly different between bags and packs (-0.0014 and -0.0018 degree-day"' respectively). Breakdown rates of dogwood and oak leaves obtained in this study were much slower than those obtained by other investigators either in the presence or absence of shredders. A comparison of results from this study with results from other studies revealed that dogwood leaves may be affected more by turbulence, while oak leaves may be influenced more by shredder activity.},
	author = {D'Angelo, Webster, J.R., D.J.},
	year = {1992},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{chellemi_influence_1992-1,
	title = {Influence of canopy microclimate on incidence and severity of dogwood anthracnose.},
	volume = {70},
	url = {http://cwt33.ecology.uga.edu/publications/1132.pdf},
	abstract = {Incidence and severity of dogwood anthracnose within the interior and exterior canopies of exposed and understory dogwood trees were recorded over a 53-day period during the summer of 1990. Concurrent measurements of vapor pressure deficit, air temperature, evaporative potential, and photosynthetically active radiation within the canopies were also recorded. Disease severity was significantly different among all canopy locations, with the lowest severity in exterior canopies of exposed trees and the greatest severity in canopies of understory trees.  Of the climatic variables measured, evaporative potential provided the most consistent contrast among microclimates at the various canopy locations.  Disease incidence and severity were greater in canopies associated with low levels of evaporative potential.},
	journal = {Canadian Journal of Botany},
	author = {Chellemi, D. O.},
	year = {1992},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{qualls_geochemistry_1991,
	title = {Geochemistry of dissolved organic nutrients in water percolating through a forest ecosystem.},
	volume = {55},
	url = {http://cwt33.ecology.uga.edu/publications/570.pdf},
	abstract = {Dissolved organic matter (DOM) is a major vehicle for the translocation and loss of N and P from forest ecosystems.  The chemical properties of DOM and  itsinteractions with soil surfaces are crucial in determining the mobility of these organic nutrients.  DOM was fractionated from throughfall, soil horizons, and stream water from an Appalachian mountain forest ecosystem into hydrophobic or hydrophilic acids, neutrals, and bases. Each fraction was analyzed for dissolved organic C, N, and P.},
	journal = {Soil Science Society of America Journal},
	author = {Qualls, R.G.},
	year = {1991},
	keywords = {CWT}
}

@article{glotz_characterizing_1991,
	title = {Characterizing the site: {Environment}, associated vegetation and site potential.},
	abstract = {None},
	journal = {In M},
	author = {Glotz, H. L.},
	year = {1991},
	keywords = {CWT}
}

@article{crossley_high-efficiency_1991,
	title = {A high-efficiency, low- technology {Tullgren}-type extractor for soil microarthropods.},
	volume = {34},
	abstract = {None},
	journal = {Agric},
	author = {Crossley, DA},
	year = {1991},
	keywords = {CWT}
}

@article{meyer_production_1990,
	title = {Production and utilization of dissolved organic carbon in riverine ecosystems.},
	abstract = {Major sources of dissolved organic carbon (DOC) in streams and rivers are found within riparian zones and stream channels. In addition to DOC excreted by primary producers in the channel, DOC is rapidly leached from terrestrial leaves falling into streams.  A more important DOC source appears to be DOC leached from material stored in the streambed. Leaching of this material is facilitated by biological activity and, in some cases, may occur under anaerobic conditions.  The amount of DOC produced by these kinds of sources has been reduced by human activities that reduce channel storage and decouple rivers and floodplains.  DOC is removed from the water column of lotic ecosystems by biotic and abiotic processes at rates ranging from {\textgreater}10-550 mg C m-2h-1.  Abiotic removal processes include sorption, photooxidation, and particle formation. Biotic utilization of DOC is largely bacterial and varies with the chemical nature of DOC and the bacterial community.  Epilithic microbial communities are important sites for DOC uptake in many streams.  The extent of contact between water and sediments is a critical determinant of rates of DOC utilization in rivers. Consequences of DOC utilization include alteration of biogeochemical cycling of other elements an increase secondary production in the ecosystem.  Three areas for future research are highlighted:  (a) ecologically relevant chemical analyses of natural DOC that can be used routinely to characterize biological availability of DOC in aquatic ecosystems; (b) information on the rates and biotic availability of products of very slow leaching of stored organic matter; (c) hydrologic studies including work on water flow paths and residence times in the watershed to clarify DOC sources and work on water movement in streambed sediments to quantify exchanges of DOC between the sediments and water column.},
	journal = {Pages 281-300 in E},
	author = {Meyer, J.L.},
	year = {1990},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{greenland_overview_1990,
	title = {Overview of climate variability and ecosystem response.},
	volume = {65},
	url = {http://cwt33.ecology.uga.edu/publications/947.pdf},
	abstract = {Unusual ecosystem responses are frequently driven by meteorological events.  The frequency and magnitude of these events and responses can be characterized through Long-Term Ecological Research. The LTER Climate Committee identifies four issues to be considered in future investigations: (1) the need to clarify terms and definitions used in discussing climate variability, (2) the importance of recognizing the various time and space scales of climate variability and ecosystem response, (3) the need to expand data beyond dependence on traditional summaries of temperature and precipitation, and (4) the value of insights gained from examining similarities and dissimilarities among climate episodes and ecosystem responses across LTER sites.},
	journal = {Climate variability and ecosystem response: proceedings of a long-term ecological research workshop [Gen},
	author = {Greenland, D.},
	year = {1990},
	keywords = {CWT}
}

@article{peters_chemical_1989,
	title = {Chemical composition and microbial activity of seston in a southern {Appalachian} headwater stream.},
	abstract = {Chemical composition and microbial activity of seston (i.e., fine particulate organic matter and associated inorganic material in transport) in a southern Appalachian headwater stream particle size were related to changes in seston surface area and/or chemical composition.  As seston particle size decreased from 500 to 10},
	journal = {J},
	author = {Peters, G. T.},
	year = {1989},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{golladay_effects_1988,
	title = {Effects of clear-cut logging on wood breakdown in {Appalachian} {Mountain} streams.},
	volume = {119},
	url = {http://cwt33.ecology.uga.edu/publications/956.pdf},
	abstract = {Red oak sticks, approximately 10-cm long and in three size classes were placed in two second-order streams at Coweeta.  Big Hurricane Branch drains a watershed logged in 1976 (WS7), while Hugh White Creek drains an uncut reference watershed (WS14). Sticks were collected at 6-month to 1-year intervals from September 1981 through November 1985. Breakdown rates were significantly different among size classes on both watersheds; smaller sticks lost mass faster than larger sticks. Breakdown rates of similar size sticks were significantly faster in the disturbed stream than in Hugh White Creek. Faster rates of wood breakdown in Big Hurricane Branch may be associated with higher stream NO3-N levels, greater stream channel instability and greater invertebrate abundance on sticks.},
	number = {1},
	journal = {The American Midland Naturalist},
	author = {Golladay, S.W.},
	year = {1988},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{swank_characterization_1988,
	title = {Characterization of baseline precipitation and stream chemistry and nutrient budgets for control watersheds.},
	url = {http://cwt33.ecology.uga.edu/publications/426.pdf},
	abstract = {The Coweeta precipitation and stream chemistry record is among the most extensive, long-term data bases available for any single location. Objectives of this chapter are to summarize the long-term record of Basin precipitation and stream chemistry for control watersheds.  Specifically, it (1) evaluates the sampling network, (2) characterizes the average solute composition of precipitation and stream water for select watersheds, (3) describes long-term annual and seasonal trends of specific solutes, and (4) describes average annual nutrient budgets for control watersheds.},
	journal = {Pages 57-79 in W},
	author = {Swank, W.T.},
	year = {1988},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{crossley_foliage_1988,
	title = {Foliage consumption and nutrient dynamics in canopy insects.},
	url = {http://cwt33.ecology.uga.edu/publications/1097.pdf},
	abstract = {Coweeta watersheds contain a varied and abundant fauna of insects, spiders, mites, and other invertebrates. Arthropods are usually inconspicuous, except when population excursions produce noticeable defoliation. Outbreaks of defoliating or wood-boring insect species clearly have an impact on the ecology of forested watersheds. Considerable information has been developed on the biology and ecology of economically important insect species. Much less is known about the ecology of economically unimportant insects, or even on the nonoutbreak phases of the important ones. This chapter characterizes feeding guilds of arthropods in forest canopies and uses guilds to describe between-tree and between-watershed variations in arthropod biomasses and standing crops of nutrients. Analysis of leaf area removed by insect feeding is a means of estimating herbivory.},
	journal = {Pages 193-205 in W},
	author = {Crossley, DA},
	year = {1988},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{cuffney_particulate_1988,
	title = {Particulate organic matter export from three headwater streams: discrete versus continuous measurements.},
	volume = {45},
	url = {http://cwt33.ecology.uga.edu/publications/1092.pdf},
	abstract = {Particulate organic matter (POM) export from three small headwater streams was estimated using continuous and grab measurement methods for 2 yrs. Total annual POM export estimated from continuous mesurements was always greater than estimates made from grab samples. Continuous export samples were collected using a weir and gaging flume connected to a Coshocton proportional sampler designed to deliver 0.6\% of discharge into a series of three settling barrels. The settling barrels removed a consistent proportion of POM (85-87\%). The inability of the discrete method to adequately sample storm and bedload transport underestimates total annual export.},
	journal = {Canadian Journal of Fisheries and Aquatic Science},
	author = {Cuffney, T.F.},
	year = {1988},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{day_forest_1988,
	title = {Forest communities and patterns.},
	url = {http://cwt33.ecology.uga.edu/publications/1068.pdf},
	abstract = {The four major vegetation types at Coweeta (northern hardwoods, cove hardwoods, oak-chestnut and oak-pine) are still undergoing change following major disturbances of logging, fire and chestnut blight. Over a 35 year period following loss of chestnut, replacement was predominantly by species already codominant with chestnut. Chestnut oak should continue to be important, except perhaps in areas of high Rhododendron density, but there may be declines in white oak, scarlet oak, and black oak. Red maple will probably remain prominent as it does in many eastern forests following disturbance. The evergreen understory seems to be quite important in inhibition of regeneration of some canopy species. Individual species appear to be distributed along complex moisture gradients.},
	journal = {Pages 141-149 in W},
	author = {Day, F. P.},
	year = {1988},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{grossman_microhabitat_1987,
	title = {Microhabitat use in a stream fish assemblage.},
	volume = {212},
	url = {http://cwt33.ecology.uga.edu/publications/941.pdf},
	abstract = {We examined microhabitat use among fishes in a 37-m section of Coweeta Creek. Numerical abundances of species changed substantially during the 17-month study period. Microhabitat availability, however, did not change markedly. Analyses of microhabitat availability and fish microhabitat use show two main patterns of non-random microhabitat use. Clinostomus funduloides, Notropis coccogenis and Semotilus atromaculatus were significantly over-represented in deep areas with low velocities and depositional substrata. Campostoma oligolepis, Cottus bairdi, Etheostoma blennoides, Rhinichthys cataractae and Salmo gairdneri all occurred in intermediate to deep microhabitats with moderate to high velocities and erosional substrata. Five of seven species exhibited seasonal variation in microhabitat utilization, whereas six species displayed size-related variation in use. Species could be assigned to either a benthic or a water column guild. Species within a guild generally could not be differentiated statistically, whereas members of different guilds were readily separable.  These patterns persisted despite changes in numerical abundances. There was no evidence of either exploitation or interference competition for microhabitat, consequently it is unlikely that spatial resources were limiting.},
	journal = {The Journal of the Zoological Society of London},
	author = {Grossman, G.D.},
	year = {1987},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{davidson_distinguishing_1986,
	title = {Distinguishing between nitrification and denitrification as sources of gaseous nitrogen production in soil.},
	volume = {52},
	url = {http://cwt33.ecology.uga.edu/publications/1081.pdf},
	abstract = {Denitrification and nitrification can occur simultaneously in the same soil aggregate. A technique which exploits the differential sensitivity of these processes to C2H2 inhibition is proposed for distinguishing among gaseous N losses from soils. Denitrification N2O was estimated from laboratory incubations where nitrification was inhibited by 10-Pa C2H2.  Nitrification N2O was estimated from the difference between NS production under no C2H2 and that determined for denitrification. Denitrification N2 was estimated from the difference between N2O production under 10-kPa C2H2 and that under 10 Pa. Laboratory estimates were significantly correlated with in situ N2O measurements made during a 10-month period in two forested watersheds. Nitrous oxide production by nitrification was most important on well-drained sites of a disturbed watershed where ambient NO3 was high. In contrast, denitrification N2O was most important on poorly drained sites near the stream.},
	number = {6},
	journal = {Applied and Environmental Microbology},
	author = {Davidson, E.A.},
	year = {1986},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{webster_vascular_1986,
	title = {Vascular plant breakdown in freshwater ecosystems.},
	volume = {17},
	url = {http://cwt33.ecology.uga.edu/publications/265.pdf},
	abstract = {This is a review of the breakdown of detritus in freshwater ecosystems derived from aquatic vascular plants and riparian trees and herbs.  The relative dominance of allochthonous vs.  autochthonous sources varies between stream systems and with local conditions within streams. Many low-order streams that lack canopies of riparian vegetation may be dominated by autochthonous primary production of nonvascular plant origin.  Theoretical models predict increasing importance of autochthonous production by periphyton and aquatic vascular plants for middle-order streams but less importance of these sources in very large streams, mainly due to light limitations. The direct contribution of wood to stream energy budgets is minimal because wood is resistant to breakdown. However, woody debris is indirectly important because it creates habitat for aquatic organisms, promotes physical stability of the stream channel, and retards loss of more readily available food sources.},
	journal = {Annual Review of Ecology Systems},
	author = {Webster, J.R.},
	year = {1986},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{strickland_situ_1986-1,
	title = {In situ measurements of sulfate incorporation into forest floor and soil organic matter.},
	volume = {16},
	url = {http://cwt33.ecology.uga.edu/publications/468.pdf},
	abstract = {Litter and soil from a mixed mature hardwood forest were examined for the capacity to incorporate 35S-labelled sulfate into organic matter in situ. Amounts of sulfate incorporated within 48h of field incubation were 70, 49, and 18\% of added 35S per gram of substrate in the O1, O2, and A horizons, respectively. These potentials increased in the respective horizons to 74, 61 and 29\% after 7 days. The incorporated 35S was predominately in the form of carbon-bonded S. In situ incorporation rates exceeded rates previously estimated by laboratory incubations and the former rates showed a positive response to increased sulfate loading.},
	journal = {Canadian Journal of Forest Research},
	author = {Strickland, T. C.},
	year = {1986},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{swift_routines_1986,
	title = {Routines for collecting and summarizing hydrometeorological data at {Coweeta} {Hydrologic} {Laboratory}.},
	url = {http://cwt33.ecology.uga.edu/publications/398.pdf},
	abstract = {Continuous records of streamflow, precipitation, and other meteorological variables began at Coweeta in 1934. Since then, data collection, processing, and archiving have changed from tedious manual techniques to computerized methods that have significantly increased accuracy and availability of information. Methods developed at Coweeta have been adopted and applied by national and international research groups. This paper reviews the concepts and procedures developed to collect, edit, and summarize hydrometeorological data at Coweeta and is intended as a reference for users of these data.},
	journal = {Research Data Management in the Ecological Sciences},
	author = {Swift, L.W.},
	year = {1986},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{webster_stream_1985,
	title = {Stream research at {Coweeta} {Hydrologic} {Laboratory}.},
	url = {http://cwt33.ecology.uga.edu/publications/267.pdf},
	abstract = {Stream research at Coweeta has been directed primarily towards an understanding of long-term responses to logging.  Effects of logging on streams include physical alterations of habitat, changes in hydrologic, chemical, and thermal characteristics of the water, and changes in food resources. The objective of this paper is to summarize stream studies with emphasis on how forest management, particularly logging, affects the structure and function of small stream ecosystems.},
	journal = {Proceedings of the Specialty Conference on Hydraulics and Hydrology in the Small Computer Age},
	author = {Webster, J.R.},
	year = {1985},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{leopold_vegetation_1985,
	title = {Vegetation patterns on a {Southern} {Appalachian} watershed after successive clearcuts.},
	volume = {50},
	url = {http://cwt33.ecology.uga.edu/publications/721.pdf},
	abstract = {Watershed 13 at Coweeta Hydrologic Laboratory was clearcut in 1939-1940 and again in 1962. No timber was removed. Present vegetation composition (woody and herbaceous species), and tree species distributions are related to site characteristics. Liriodendron tulipifera had the highest basal area and Importance Value (IV) of all tree species; Quercus prinus had the highest density, Acer rubrum the highest frequency. Stand basal area 21 years after the second clearcut was over 80\% of that before the first clearcut. Kalmia latifolia and Rhododendron maximum have responded vigorously to past clearcuts and the herbaceous layer is rich. Mesic species, especially Liriodendron tulipifera and Betula lenta have increased tremendously in importance since the inventory made in 1934 prior to either clearcut or the full effect of chestnut blight. These species now occupy more of the watershed and the watershed supports vegetation of a more mesic nature.},
	number = {3},
	journal = {Castanea},
	author = {Leopold, D. J.},
	year = {1985},
	keywords = {CWT}
}

@article{benfield_shredder_1985,
	title = {Shredder abundance and leaf breakdown in an {Appalachian} {Mountain} stream.},
	volume = {15},
	abstract = {Breakdown rates of dogwood, red maple and white oak leaves were investigated at two first-order and two second-order sites in an Appalachian Mountain stream. Leaves exposed in mesh bags were sampled on eight occasions over a 207-day period and breakdown rates were compared using an exponential decay model. There was a consistent ranking in leaf breakdown rate within each site, i.e., dogwood {\textgreater} red maple {\textgreater} white oak, and all species broke down faster at second-order than at first-order sites. Our data suggest that differences in species-specific leaf breakdown rates were largely a function of shredder abundance on the leaves.},
	journal = {Freshwater Biology},
	author = {Benfield, E.F.},
	year = {1985},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{boring_symbiotic_1984,
	title = {Symbiotic nitrogen fixation in regenerating black locust ({Robinia} pseudo-acacia {L}.) stands.},
	volume = {30},
	url = {http://cwt33.ecology.uga.edu/publications/1157.pdf},
	abstract = {Black locust is a dominant early successional tree in the Southern Appalachians that symbiotically fixes N, grows rapidly, and has a relatively short life span. Objectives of this research were to study seasonal patterns of nodule biomass and N-fixation activity in 4-year-old black locust stands over the span of one year, and to determine the importance of symbiotic N fixation as an input to a regenerating forest.},
	number = {2},
	journal = {Forest Science},
	author = {Boring, L. R.},
	year = {1984},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{boring_role_1984,
	title = {The role of black locust ({Robinia} pseudo-acacia) in forest succession.},
	volume = {72},
	url = {http://cwt33.ecology.uga.edu/publications/1156.pdf},
	abstract = {Early forest regeneration in Southern Appalachian hardwood forests is dominated by the woody nitrogen-fixing legume, black locust. It is most prevalent on clear-felled areas, abandoned pastures, disturbed roadsides, and historically may have been an important colonizer of burned sites. It commonly reproduces from seed, but sprouting from stumps and roots is the most prevalent means of regeneration with rapid early growth, attaining heights up to 8 m in 3 years. Except for stands on high-nutrient sites, growth decreases after 10-20 years. In less vigorous stands, stem mortality may be high due to attacks by the locust stem borer. The high mortality of black locust is an early successional mechanism that releases codominant species such as Liriodendron, and creates canopy gaps favorable for growth of longer-lived individuals.  Patterns of N accretion are similar to those for other woody nitrogen-fixing species with peak N fixation occurring in early to intermediate stages of forest succession, and declining with later successional development.},
	journal = {Journal of Ecology},
	author = {Boring, L.},
	year = {1984},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{georgian_seasonal_1984,
	title = {Seasonal production dynamics of six species of periphyton-grazing insects in a southern {Appalachian} {Mountain} streams.},
	volume = {119},
	url = {http://cwt33.ecology.uga.edu/publications/970.pdf},
	abstract = {A condensation of Seasonal production dynamics in a guild of periphyton-grazing insects in a southern Appalachian stream. Ecology 64(5): 1236-1248.},
	number = {1},
	journal = {The American Midland Naturalist},
	author = {Georgian, T.},
	year = {1984},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{pittillo_reference_1984,
	title = {Reference plant collection of the {Coweeta} {Hydrologic} {Laboratory}.},
	url = {http://cwt33.ecology.uga.edu/publications/579.pdf},
	abstract = {This report describes a botanical survey of Coweeta and lists the 604 taxa in the reference collection.},
	journal = {Gen},
	author = {Pittillo, J. D},
	year = {1984},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{swank_atmospheric_1984,
	title = {Atmospheric contributions to forest nutrient cycling.},
	volume = {20},
	url = {http://cwt33.ecology.uga.edu/publications/438.pdf},
	abstract = {The atmosphere is a significant source of plant nutrients that partially replenishes losses due to timber harvesting. Nitrogen in bulk precipitation (wetfall and dryfall) is equivalent to at least 70 percent of the nitrogen incorporated annually in above-ground woody tissues of some temperate hardwood forests.  Atmospheric sources of calcium and potassium supply between 20 and 40 percent of the nutrients sequestered in woody increments. Annual nutrient inputs in bulk precipitation can exceed removals associated with sawlog harvest over a rotation period. Atmospheric inputs of nitrogen are only slightly less than hydrologic losses immediately after timber harvesting.  The deposition of nutrients is highly variable in both time and space; interpretations of nutrient inputs and forest management impacts require quantification of inputs for a variety of ecosystems over long periods of time.},
	number = {3},
	journal = {Water Resources Bulletin},
	author = {Swank, W.T.},
	year = {1984},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{strickland_formation_1984,
	title = {Formation and mineralization of organic sulfur in forest soils.},
	volume = {1},
	url = {http://cwt33.ecology.uga.edu/publications/470.pdf},
	abstract = {The incorporation of sulfur from inorganic sulfate into organic matter was examined using 35S for O1, O2 and A-horizon samples from two hardwood forests located at Coweeta. This temperature-dependent transformation was stimulated by increased availability of sulfate or energy and the process was inhibited by sodium azide, erythromycin and candicidin.  Thus, bacteria and fungi mediate sulfur incorporation via the formation of the covalent linkages. Evidence indicates that the sulfur of this fraction is subject to mineralization after depolymerization of the carbon matrix and methods are given for the direct and indirect assessment of potential turnover rates. The availability of sulfate from mineralization appears to depend upon the rate of incorporation of sulfur into organic matter. Substantially higher levels of extractable sulfate were detected when turnover of the isolated organosulfur fraction was assayed for in the presence of axide, an inhibitor of sulfate incorporation. However, the reverse was true when turnover was monitored in the presence of glucose and succinate which stimulate sulfate incorporation.},
	journal = {Biogeochemistry},
	author = {Strickland, T. C.},
	year = {1984},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{fitzgerald_formation_1983,
	title = {Formation of organic sulfur in forest soils: a biologically mediated process.},
	volume = {13},
	url = {http://cwt33.ecology.uga.edu/publications/998.pdf},
	abstract = {The ability of forest soils to incorporate sulfur from added inorganic sulfate into salt-extractable and non salt-extractable forms was investigated. At least 65 percent of the added sulfate was adsorbed while 8 to 27 percent of the sulfate added was recovered only after treatment of salt-extracted samples with acid and base. The incorporation of sulfur into this latter fraction was incubation time, temperature and depth dependent, and exhibited both spatial as well as seasonal variation in samples taken along a transect of one of the watersheds. Sulfur incorporation was inhibited by sodium azide, erythromycin and candicidin, suggesting that the incorporation of sulfur into the non salt-extractable fraction is mediated by bacteria and fungi.},
	journal = {Canadian Journal of Forest Research},
	author = {Fitzgerald, J. W.},
	year = {1983},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{sloan_modeling_1983,
	title = {Modeling surface and subsurface stormflow on steeply-sloping forested watersheds.},
	url = {http://cwt33.ecology.uga.edu/publications/504.pdf},
	abstract = {A simple conceptual rainfall-runoff model, based on the variable source area concept, was developed for predicting runoff from small, steep-sloped, forested watersheds. Five subsurface flow models were evaluated with data from Coweeta soil model 3. Good agreement was shown between predicted daily discharges from the full model and field data from a test plot. The model simulated subsurface flow with the flashy hydrologic behavior of small watersheds.},
	journal = {In Research Report 142},
	author = {Sloan, P. G.},
	year = {1983},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{neary_off-site_1983,
	title = {Off-site movement of hexazinone in stormflow and baseflow from forest watersheds.},
	volume = {31},
	url = {http://cwt33.ecology.uga.edu/publications/629.pdf},
	abstract = {Four forest watersheds in the upper Piedmont of Georgia were treated with hexazinone pellets at a rate of 1.68 kg ai/ha.  Twenty-six storms were monitored to determine movement of hexazinone and two of its metabolites in runoff. Residues peaked in the first storm after application (442 + 53 p/bw), and declined with subsequent storms in a power curve function.  Loss of hexazinone averaged 0.53 percent of the applied herbicide, with two storms accounting for 59.3 percent of the chemical exported. Subsurface movement of hexazinone appeared in streamflow 3 to 4 months after application and produced an additional loss of 0.05 percent.},
	journal = {Weed Science},
	author = {Neary, D. G.},
	year = {1983},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{meyer_influence_1983,
	title = {The influence of elevated nitrate concentration on rate of leaf decomposition in a stream.},
	volume = {13},
	url = {http://cwt33.ecology.uga.edu/publications/669.pdf},
	abstract = {Leaf decomposition was compared in two Coweeta streams, one draining an undisturbed hardwood watershed (18) and one draining a successional watershed (6) subject to an insect outbreak. The successional watershed had elevated nitrate concentrations in the streamwater. Both black locust (Robinia pseudo-acacia) and sweet birch (Betula lenta) leaf litter decomposed 2.8 times more rapidly in the stream with high nitrate concentrations. The more rapid decay rates appeared to be partly due to accelerated microbial processing in response to nitrate enrichment, because microbial biomass (as ATP) was higher in the nitrate-enriched stream. Nitrogen and phosphorus content of the litter at the same state of decay was the same in the two streams.},
	journal = {Freshwater Biology},
	author = {Meyer, J.L.},
	year = {1983},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{meyer_effects_1983,
	title = {The effects of watershed disturbance on dissolved organic carbon dynamics of a stream.},
	volume = {64},
	url = {http://cwt33.ecology.uga.edu/publications/668.pdf},
	abstract = {The response of a stream ecosystem to watershed disturbance was investigated by comparing budgets of DOC for a stream draining an undisturbed watershed with a stream draining a watershed clearcut 2 years previously. Both streams had elevated DOC concentration during storms. In the undisturbed stream, DOC concentration increased from seep to weir during the growing season. DOC concentration and annual export from the clearcut watershed was less (9.8 - 11.5 kg/ha) than from the reference (14.6 - 15.1 kg/ha). Lower export was partly due to reduced DOC inputs from throughfall and leaching litter, but most importantly to lower DOC inputs in subsurface water and less in-stream generation of DOC. The rate of recovery of this stream from disturbance is dependent on the rate at which the terrestrial system recovers.},
	journal = {Ecology},
	author = {Meyer, J.L.},
	year = {1983},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{evans_harvest_1983,
	title = {Harvest trees, reap water.},
	volume = {38},
	url = {http://cwt33.ecology.uga.edu/publications/1008.pdf},
	abstract = {The relationship of timber harvesting to water yield is discussed by the authors. They trace the development of current knowledge that clearcutting increases water yield from the earlier idea that an intact forest maximizes water yield.  Experimental results from eastern and western watersheds are presented, along with implications for timber management as a tool for manipulating water yield.},
	journal = {Journal of Soil and Water Conservation},
	author = {Evans, J. O.},
	year = {1983},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{van_lear_water_1982,
	title = {Water in the loblolly pine ecosystem - {Eastern} region.},
	url = {http://cwt33.ecology.uga.edu/publications/362.pdf},
	abstract = {The hydrologic cycle in the loblolly pine ecosystem east of the Mississippi River is discussed with special reference to the effects of silvicultural practices and species conversion on quality and quantity of water yield, storm, runoff, and erosion. The conclusion reached is that adverse impacts of forestry activities can be minimized through careful planning and supervision of operations.},
	journal = {Symposium on the loblolly pine ecosystems (East region)},
	author = {Van Lear, D.H.},
	year = {1982},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{fitzgerald_transformations_1982,
	title = {Transformations of sulphate in forested and agricultural lands},
	url = {http://cwt33.ecology.uga.edu/publications/2146.pdf},
	abstract = {The physiochemical and biological fates of exogenous inorganic sulphate in agricultural and forest soils were considered. Emphasis was given to the capacities of these soils to adsorb sulphate and to convert the sulphur of the remaining non-adsorbed anion into soil organic sulphur. While agricultural and forest systems can differ substantially in capacity for sulphate adsorption, both systems can incorporate sulphate as ester sulphate into organic matter. Ester-linked sulphur may also represent the form of soil organic sulphur which is reconverted to inorganic sulphate in response to plant growth. Existing evidence suggests that the formation of soil organic sulphur is regulated by energy availability, whereas the reconversion process may be dictated by levels of available inorganic sulphate. Emphasis was also given to the possibility, based upon the limited information available on the biological fate of sulphate, that generalizations and comparisons relating to forested and agricultural systems may be premature at present. Further detailed study of sulphate adsorption and biological fate is warranted in view of the increasing environmental importance of sulphate as a major constituent of acidic precipitation.},
	journal = {Proceedings:International Sulphur '82 Conference, London},
	author = {Fitzgerald, J. W.},
	year = {1982},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{seastedt_microarthropod_1981,
	title = {Microarthropod response following cable logging and clear-cutting in the {Southern} {Appalachians}.},
	volume = {62},
	url = {http://cwt33.ecology.uga.edu/publications/516.pdf},
	abstract = {Litter and soil microarthropod populations were monitored following cable logging and clear-cutting of a forested watershed (WS 7) at Coweeta. Annual mean densities of microarthropods in litter bags were reduced over 50 percent on the clear-cut watershed when compared with an adjacent forested watershed (WS 2), and averaged 8.4 individuals/g of litter on WS 7 vs. 20.4/g on WS 2 (P {\textless} .01). Density estimates obtained from 5-cm-deep sections of litter and soil indicated a 25 percent reduction in densities on WS 7, with a 17-month average of 98,900 microarthropods/m2 on WS 7 vs. 133,500 microarthropods/m2 on WS2 (P {\textless} .001). In contrast, densities of microarthropods increased over 100 percent in deeper soil horizons (5-55 cm), averaging 89,800 microarthropods/m2 on WS 7 vs. 43,700 microarthropods/m2 on WS 2 (P {\textless} .001).},
	journal = {Ecology},
	author = {Seastedt, T. R.},
	year = {1981},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{hewlett_erosion_1979,
	title = {Erosion control on forest land in {Georgia}},
	url = {http://cwt33.ecology.uga.edu/publications/2166.pdf},
	abstract = {This booklet is intended to help foresters and timber contractors to apply simple erosion control methods while harvesting and regenerating forests in the Flatwoods, Coastal Plain, Piedmont, Valley and Ridge, and Mountain Provinces of Georgia. Some new suggestions for better access roads and harvesting methods are included, but most of the recommendations come from the commonplace experience of loggers and foresters. The booklet is part of the regional effort to implement Section 208 of the Federal Water Pollution Control Act Amendments of 1972 (PL 92-500), as delegated by the Environmental Protection Agency (EPA) to the states. The recommendation may be applied in adjoining states with similar physiographic provinces.},
	author = {Hewlett, Thompson, W.P., Brightwell, N., J.D.},
	year = {1979},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{harshbarger_survival_1979,
	title = {Survival of brown trout eggs: two planting techniques compared.},
	url = {http://cwt33.ecology.uga.edu/publications/898.pdf},
	abstract = {This paper compares survival of eggs, embryos, and swim-up fry of brown trout (Salmo trutta) in direct intragravel plants and in Vibert boxes. Egg mortality increased disproportionately in Vibert boxes after 4 weeks until time of hatching. Direct intragravel plants yielded the highest survival to the swim-up stage.},
	author = {Harshbarger, {and} P. E. Porter, T. J.},
	year = {1979},
	keywords = {CWT}
}

@article{todd_nitrogen_1978,
	title = {Nitrogen fixation in a {Southeastern} {United} {States} deciduous forest.},
	volume = {Environmental role of nitrogen-fixing blue-green algae and asymbiotic bacteria; Proceedings of the seventh international soil zo},
	abstract = {Dinitrogen fixation was quantified in a mixed deciduous forest ecosystem at Coweeta. Rates and annual amounts of nitrogen fixation were measured for several components of a mature oak-hickory forest. Highest rates were observed in the soil (8.53 kg N fixed ha-1 yr-1), followed by woody litter (1.66), bole (1.00), leaf litter (0.63), and phyllosphere (0.22). The total amount of nitrogen fixed was estimated as 12.04 kg N ha-1 yr-1. Generally these fixation rates for a deciduous forest compare favorably with similar measurements in coniferous forests. These results show that the biological fixation of gaseous nitrogen is a major input of nitrogen to deciduous forest ecosystems.},
	author = {Todd, R. D. Meyer, {and} J. B. Waide, R. L.},
	year = {1978},
	keywords = {CWT}
}

@article{todd_elemental_1978,
	title = {Elemental analysis of terrestrial microflora and fauna using an electron microbeam technique.},
	volume = {1976 April 28 - May 1.  Augusta, GA. National Technical Information Service, Springfield, VA.},
	abstract = {X-ray microanalysis is a nondestructive, fast, and accurate means of obtaining elemental information about a variety of biologically different samples located within a microhabitat.  Combining an X-ray spectrometer and a scanning electron microscope makes it possible for the environmental chemist to visualize the sample and to determine elemental concentration and spatial localization. Elemental concentrations and their distribution can be measured if consideration is given to specimen preparation and proper interpretation of the X-ray data. Analytical procedures (specimen preparation and data interpretation) and the potential of this technique as an environmental research tool are discussed.},
	author = {Todd, P. Sihanonth, D. A. Crossley, Jr., {and} K. Cromack, Jr., R. L.},
	year = {1978},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{day_seasonal_1977,
	title = {Seasonal nutrient dynamics in the vegetation on a {Southern} {Appalachian} watershed.},
	url = {http://cwt33.ecology.uga.edu/publications/1069.pdf},
	abstract = {Nutrient dynamics in vegetation play an important role in determining the circulation and storage of nutrients in an ecosystem. The major objectives of this study were to estimate the plant nutrient pools on a hardwood forest watershed at Coweeta, on a seasonal basis and to relate any observed trends to seasonal productivity and phenology. Major conclusions of the study were (1) individual species and different plant components have nutrient storage-pool turnover times ranging from one year to several hundred years. Canopy species are important in long- and short-term nutrient cycles. (2) Even though most of the annual nutrient uptake is recycled the same season, the total accumulation of nutrients is considerable in a mature forest stand.},
	author = {Day, {and} C. D. Monk, F. P.},
	year = {1977},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{malas_strategies_1977,
	title = {Strategies for coexistence in three species of net-spinning caddisflies ({Trichoptera}) in second order southern {Appalachian} streams.},
	url = {http://cwt33.ecology.uga.edu/publications/701.pdf},
	abstract = {Three species of net-spinning caddisflies, Parapsyche cardis, Diplectrona modesta, and Dolophilodes distinctus were studied.  Larvae of Dolophilodes are found at the lowest current velocities followed by Diplectrona, then Parapsyche, which prefer the higher velocities. Parapsyche larvae are most abundant on upper surfaces of stones while Diplectrona and Dolophilodes are found primarily on undersides of stones.  These distribution patterns are probably related to capture net mesh dimensions which differ greatly for the three species, Parapsyche having the largest and Dolophilodes the smallest meshes. There are large differences between mesh opening sizes of last-instar Dolophilodes and first- and second-instar Diplectrona larvae. However, based on mean particle size measurements of foregut contents, there is no corresponding gap in the spectrum of particle sizes used for food. Dietary composition also varied between species.  Parapsyche consumed primarily animal material. Fine particulate detritus composed over 95 percent of Dolophilodes gut contents and Diplectrona consumed mostly vascular plant and detritus fragments in late instars and fine particulate detritus in early instars.},
	author = {Malas, {and} J. B. Wallace, D. M.},
	year = {1977},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{cromack_soil_1977,
	title = {Soil microorganism - arthropod interactions: fungi as major calcium and sodium sources.},
	volume = {J. Mattson, editor. The role of arthropods in forest ecosystems. Springer-Verlag, New York; Heidelberg; Berlin.},
	url = {http://cwt33.ecology.uga.edu/publications/1106.pdf},
	abstract = {The objective of this paper is to present evidence that terrestrial fungi may be important sources of Ca and Na for saprophagous arthropods and other soil animals. Calcium, but not Na, has been reported as essential for many fungi; both elements are essential for animals.},
	author = {Cromack, Jr., P. Sollins, R. L. Todd, D. A. Crossley, Jr., W.  M. Fender, R. Fogel, {and} A. W. Todd, K.},
	year = {1977},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{day_net_1977,
	title = {Net primary production and phenology on a {Southern} {Appalachian} watershed.},
	url = {http://cwt33.ecology.uga.edu/publications/1070.pdf},
	abstract = {The major objective of the study was to measure above-ground net primary production (NPP) seasonally and relate it to phenological activity in a hardwood forest at Coweeta. NPP was estimated as the increase in biomass, estimated from regression equations on diameter. Diameter increases were measured by vernier tree bands. Phenological observations were made on bud break, leaf emergence, flowering, mature fruit, leaf senescence, and leaf fall. The species studied intensively were Acer rubrum, Quercus prinus, Carya glabra, Cornus florida, and Liriodendron tulipifera.},
	author = {Day, {and} C. D. Monk, F. P.},
	year = {1977},
	keywords = {CWT}
}

@article{webster_large_1977,
	title = {Large particulate organic matter processing in stream ecosystems.},
	volume = {1977 February 28 - March 3. Edgewater, MD. Smithsonian Institution, Edgewater, MD.},
	abstract = {The stream ecosystems of eastern deciduous forests are highly adapted to their riparian terrestrial surroundings.  Particulate organic matter inputs from the riparian vegetation are processed by the combined action of microbes and invertebrates and the mechanical action of flowing water. In unperturbed Coweeta streams, processing efficiency is 95 to 99 percent. Processing efficiency is less in watersheds where the vegetation has been disturbed. Comparison of Coweeta data with other studies suggests a greater processing efficiency in southeastern than northeastern streams.},
	author = {Webster, J.R.},
	year = {1977},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{monk_overview_1977,
	title = {An overview of nutrient cycling research at {Coweeta} {Hydrologic} {Laboratory}.},
	volume = {1977 February 28 - March 3. Edgewater, MD.  Smithsonian Institution, Edgewater, MD.},
	url = {http://cwt33.ecology.uga.edu/publications/655.pdf},
	abstract = {A research program at the Coweeta Hydrologic Laboratory, North Carolina, is investigating effects of manipulations on nutrient cycling and productivity of forested watersheds. The experimental approach is to explain whole ecosystem behavior, as revealed by watershed nutrient and water budgets, by reference to internal ecosystem processes. This report describes the general scope of the research at process levels, and relates dynamics of internal processes to ecosystem level response. The research is organized around a general theory of ecosystem relative stability, based on the complementary aspects of resistance to disturbance and resilience following disturbance.},
	author = {Monk, D. A. Crossley, Jr., R. L. Todd, W. T. Swank, J. B.  Waide, {and} J. R. Webster, C. D.},
	year = {1977},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{barr_north_1971,
	title = {The {North} {American} {Pterostichus} of the subgenus {Cylindrocharis} {Casey} ({Coleoptera}, {Carabidae}).},
	volume = {American Museum of Natural History, New York.  14p.},
	url = {http://cwt33.ecology.uga.edu/publications/1189.pdf},
	abstract = {Cylindrocharis Casey, a subgenus of Pterostichus Bonelli, includes three species: P. (C.) rostratus (Newman), ranging from southeastern Canada to the southern Appalachian Mountains of Tennessee and North Carolina; P. (C.) acutipes, new species, from central Kentucky and Tennessee to the mountains of Tennessee, North Carolina, and northeast Georgia; and P.  hypogeus, new species, from the Nantahala and Snowbird Mountains, North Carolina. The central Kentucky populations of acutipes are described as a distinct subspecies, P. (C.) a.  kentuckensis.},
	author = {Barr, Jr., T. C.},
	year = {1971},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{hibbert_water_1969,
	title = {Water yield changes after converting a forested catchment to grass.},
	url = {http://cwt33.ecology.uga.edu/publications/840.pdf},
	abstract = {After a forested catchment was converted to grass, the amount of evapotranspiration was closely related to the amount of grass produced.  During years when grass production was high, water yield from the catchment was about the same as or less than the expected yield from the original forest. As grass productivity declined, water yield gradually increased until it exceeded the predicted yield from the forest by over 5 inches annually. The grass appeared to evaporate more water early in the spring and less water late in the summer than the original forest cover.},
	author = {Hibbert, A. R.},
	year = {1969},
	keywords = {CWT}
}

@article{mueller_investigation_1967,
	title = {Investigation of the quantitative determination of precipitation by radar},
	volume = {U.S. Army Electronics Command, Fort Monmouth, NJ. 58p.},
	abstract = {Rainfall drop-size distributions measured by Illinois State Water Survey drop camera at Coweeta Hydrologic Laboratory and four other sites in Eastern and Western United States were analyzed to define attenuation of weather radar at the 75-mile range. Drop-size distributions from Coweeta and New Jersey were similar, but both were different from Arizona data.},
	author = {Mueller, A. L. Sims, {and} R. Cataneo, E. A.},
	year = {1967},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{hewlett_instrumental_1964,
	title = {Instrumental and soil moisture variance using the neutron-scattering method.},
	url = {http://cwt33.ecology.uga.edu/publications/852.pdf},
	abstract = {The variance in estimates of soil moisture as determined by the neutron-scattering method is examined and related to field data from two research areas. Instrument and timing errors are shown to contribute insignificantly to the standard error of estimate. Furthermore, their contribution to estimates of moisture change with time is negligible as long as the timing interval used at each observation exceeds 30 seconds.},
	author = {Hewlett, J. E. Douglass, {and} J. L. Clutter, J. D.},
	year = {1964},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{meginnis_principles_1956,
	title = {Principles of watershed management based on current research},
	url = {http://cwt33.ecology.uga.edu/publications/2181.pdf},
	abstract = {Watershed management is the integrated management of all renewable resources of a drainage basin for maximum water production or control consistent with other economic uses of the land. While this definition certainly encompasses structural works of improvement, I am going to focus on land treatment; and mostly I will focus on wildland management, since discussions of this are often subordinated to agricultural aspects in meetings of this sort.},
	author = {Meginnis, H.G.},
	year = {1956},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{kenney_our_1956,
	title = {Our green treasury, the national forests.},
	url = {http://cwt33.ecology.uga.edu/publications/749.pdf},
	abstract = {Coweeta is featured in this popular review of a the National Forest program.  Color photo of Watershed 17 shows Jake Kovner, Jack Shope and Bill Shope.  Text highlights the mountain farm, woodland grazing, and exploitive logging demonstrations.},
	author = {Kenney, N. T.},
	year = {1956},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{metz_forest_1954,
	title = {Forest {Floor} in the {Piedmont} {Region} of {South} {Carolina}},
	volume = {18, No. 3},
	url = {http://cwt33.ecology.uga.edu/publications/2183.pdf},
	abstract = {The annual litter fall, weight of forest floor, and organic matter incorporation in the surface foot of mineral soil are reported for three pine, three pine-hardwood, and three hardwood stands in the South Carolina Piedmont. The litter fall for the stands averaged 4,400 pounds per acre, of which 3,500 pounds was leaf material. The weight of the forest floor was greatest in the pine stands and least in the hardwoods. The forest floor weight, expressed on a volatile matter basis, ranged from 6,160 pounds per acre in an old hardwood stand to 16,430 pounds in a 40-year-old shortleaf pine stand. The organic matter content in the surface foot of mineral soil ranged from 83,550 pounds per acre in the old hardwood stand to 25,780 pounds in a young loblolly pine plantation. The weight of the forest floor and organic matter in the mineral soil show that decomposition is more rapid beneath hardwood stands. The forest floors are classified as to humus type and the discussion presented shows some practical application of the information to forest management work.},
	author = {Metz, L.J.},
	year = {1954},
	keywords = {CWT}
}

Paper  abstract   bibtex   

@article{greene_land_1950,
	title = {Land use and trout streams.},
	url = {http://cwt33.ecology.uga.edu/publications/949.pdf},
	abstract = {Maximum stream temperatures rose appreciably when a forested watershed at Coweeta was converted to a mountain farm. Because absence of shade can increase stream temperatures, riparian vegetation should be carefully manipulated to maintain optimum temperatures for growth and development of trout and aquatic organisms.},
	author = {Greene, G. E.},
	year = {1950},
	keywords = {CWT}
}