Denitrification potential in sediments of headwater streams in the southern Appalachian mountains, USA. Maritn, L. A., Mulholland, P. J., Webster, J., & Valett, H. Journal of the North American Benthological Society, 2001. ![Denitrification potential in sediments of headwater streams in the southern Appalachian mountains, USA. [pdf]](https://bibbase.org/img/filetypes/pdf.svg "pdf")
Paper abstract bibtex 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
@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}
}
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