Anthropogenic activities significantly increase annual greenhouse gas (GHG) fluxes from temperate headwater streams in Germany. Mwanake, R. M., Gettel, G. M., Wangari, E. G., Glaser, C., Houska, T., Breuer, L., Butterbach-Bahl, K., & Kiese, R. Biogeosciences, 20(16):3395–3422, August, 2023. ![Anthropogenic activities significantly increase annual greenhouse gas (GHG) fluxes from temperate headwater streams in Germany [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Abstract. Anthropogenic activities increase the contributions of inland waters to global greenhouse gas (GHG; CO2, CH4, and N2O) budgets, yet the mechanisms driving these increases are still not well constrained. In this study, we quantified year-long GHG concentrations, fluxes, and water physico-chemical variables from 28 sites contrasted by land use across five headwater catchments in Germany. Based on linear mixed-effects models, we showed that land use was more significant than seasonality in controlling the intra-annual variability of the GHGs. Streams in agriculture-dominated catchments or with wastewater inflows had up to 10 times higher daily CO2, CH4, and N2O emissions and were also more temporally variable (CV \textgreater 55 %) than forested streams. Our findings also suggested that nutrient, labile carbon, and dissolved GHG inputs from the agricultural and settlement areas may have supported these hotspots and hot-moments of fluvial GHG emissions. Overall, the annual emission from anthropogenic-influenced streams in CO2 equivalents was up to 20 times higher (∼ 71 kg CO2 m−2 yr−1) than from natural streams (∼ 3 kg CO2 m−2 yr−1), with CO2 accounting for up to 81 % of these annual emissions, while N2O and CH4 accounted for up to 18 % and 7 %, respectively. The positive influence of anthropogenic activities on fluvial GHG emissions also resulted in a breakdown of the expected declining trends of fluvial GHG emissions with stream size. Therefore, future studies should focus on anthropogenically perturbed streams, as their GHG emissions are much more variable in space and time and can potentially introduce the largest uncertainties to fluvial GHG estimates.
@article{mwanake_anthropogenic_2023,
title = {Anthropogenic activities significantly increase annual greenhouse gas ({GHG}) fluxes from temperate headwater streams in {Germany}},
volume = {20},
copyright = {https://creativecommons.org/licenses/by/4.0/},
issn = {1726-4189},
url = {https://bg.copernicus.org/articles/20/3395/2023/},
doi = {10.5194/bg-20-3395-2023},
abstract = {Abstract. Anthropogenic activities increase the contributions of inland waters to
global greenhouse gas (GHG; CO2, CH4, and N2O) budgets, yet
the mechanisms driving these increases are still not well constrained. In
this study, we quantified year-long GHG concentrations, fluxes, and water
physico-chemical variables from 28 sites contrasted by land use across five
headwater catchments in Germany. Based on linear mixed-effects models, we
showed that land use was more significant than seasonality in controlling
the intra-annual variability of the GHGs. Streams in agriculture-dominated
catchments or with wastewater inflows had up to 10 times higher daily
CO2, CH4, and N2O emissions and were also more temporally
variable (CV {\textgreater} 55 \%) than forested streams. Our findings also
suggested that nutrient, labile carbon, and dissolved GHG inputs from the
agricultural and settlement areas may have supported these hotspots and
hot-moments of fluvial GHG emissions. Overall, the annual emission from
anthropogenic-influenced streams in CO2 equivalents was up to 20 times
higher (∼ 71 kg CO2 m−2 yr−1) than from
natural streams (∼ 3 kg CO2 m−2 yr−1), with
CO2 accounting for up to 81 \% of these annual emissions, while
N2O and CH4 accounted for up to 18 \% and 7 \%, respectively. The
positive influence of anthropogenic activities on fluvial GHG emissions also
resulted in a breakdown of the expected declining trends of fluvial GHG
emissions with stream size. Therefore, future studies should focus on
anthropogenically perturbed streams, as their GHG emissions are much more
variable in space and time and can potentially introduce the largest
uncertainties to fluvial GHG estimates.},
language = {en},
number = {16},
urldate = {2024-11-15},
journal = {Biogeosciences},
author = {Mwanake, Ricky Mwangada and Gettel, Gretchen Maria and Wangari, Elizabeth Gachibu and Glaser, Clarissa and Houska, Tobias and Breuer, Lutz and Butterbach-Bahl, Klaus and Kiese, Ralf},
month = aug,
year = {2023},
pages = {3395--3422},
}
Downloads: 0
{"_id":"RwmiRn9NEGYNk6ZbQ","bibbaseid":"mwanake-gettel-wangari-glaser-houska-breuer-butterbachbahl-kiese-anthropogenicactivitiessignificantlyincreaseannualgreenhousegasghgfluxesfromtemperateheadwaterstreamsingermany-2023","author_short":["Mwanake, R. M.","Gettel, G. M.","Wangari, E. G.","Glaser, C.","Houska, T.","Breuer, L.","Butterbach-Bahl, K.","Kiese, R."],"bibdata":{"bibtype":"article","type":"article","title":"Anthropogenic activities significantly increase annual greenhouse gas (GHG) fluxes from temperate headwater streams in Germany","volume":"20","copyright":"https://creativecommons.org/licenses/by/4.0/","issn":"1726-4189","url":"https://bg.copernicus.org/articles/20/3395/2023/","doi":"10.5194/bg-20-3395-2023","abstract":"Abstract. Anthropogenic activities increase the contributions of inland waters to global greenhouse gas (GHG; CO2, CH4, and N2O) budgets, yet the mechanisms driving these increases are still not well constrained. In this study, we quantified year-long GHG concentrations, fluxes, and water physico-chemical variables from 28 sites contrasted by land use across five headwater catchments in Germany. Based on linear mixed-effects models, we showed that land use was more significant than seasonality in controlling the intra-annual variability of the GHGs. Streams in agriculture-dominated catchments or with wastewater inflows had up to 10 times higher daily CO2, CH4, and N2O emissions and were also more temporally variable (CV \\textgreater 55 %) than forested streams. Our findings also suggested that nutrient, labile carbon, and dissolved GHG inputs from the agricultural and settlement areas may have supported these hotspots and hot-moments of fluvial GHG emissions. Overall, the annual emission from anthropogenic-influenced streams in CO2 equivalents was up to 20 times higher (∼ 71 kg CO2 m−2 yr−1) than from natural streams (∼ 3 kg CO2 m−2 yr−1), with CO2 accounting for up to 81 % of these annual emissions, while N2O and CH4 accounted for up to 18 % and 7 %, respectively. The positive influence of anthropogenic activities on fluvial GHG emissions also resulted in a breakdown of the expected declining trends of fluvial GHG emissions with stream size. Therefore, future studies should focus on anthropogenically perturbed streams, as their GHG emissions are much more variable in space and time and can potentially introduce the largest uncertainties to fluvial GHG estimates.","language":"en","number":"16","urldate":"2024-11-15","journal":"Biogeosciences","author":[{"propositions":[],"lastnames":["Mwanake"],"firstnames":["Ricky","Mwangada"],"suffixes":[]},{"propositions":[],"lastnames":["Gettel"],"firstnames":["Gretchen","Maria"],"suffixes":[]},{"propositions":[],"lastnames":["Wangari"],"firstnames":["Elizabeth","Gachibu"],"suffixes":[]},{"propositions":[],"lastnames":["Glaser"],"firstnames":["Clarissa"],"suffixes":[]},{"propositions":[],"lastnames":["Houska"],"firstnames":["Tobias"],"suffixes":[]},{"propositions":[],"lastnames":["Breuer"],"firstnames":["Lutz"],"suffixes":[]},{"propositions":[],"lastnames":["Butterbach-Bahl"],"firstnames":["Klaus"],"suffixes":[]},{"propositions":[],"lastnames":["Kiese"],"firstnames":["Ralf"],"suffixes":[]}],"month":"August","year":"2023","pages":"3395–3422","bibtex":"@article{mwanake_anthropogenic_2023,\n\ttitle = {Anthropogenic activities significantly increase annual greenhouse gas ({GHG}) fluxes from temperate headwater streams in {Germany}},\n\tvolume = {20},\n\tcopyright = {https://creativecommons.org/licenses/by/4.0/},\n\tissn = {1726-4189},\n\turl = {https://bg.copernicus.org/articles/20/3395/2023/},\n\tdoi = {10.5194/bg-20-3395-2023},\n\tabstract = {Abstract. Anthropogenic activities increase the contributions of inland waters to\nglobal greenhouse gas (GHG; CO2, CH4, and N2O) budgets, yet\nthe mechanisms driving these increases are still not well constrained. In\nthis study, we quantified year-long GHG concentrations, fluxes, and water\nphysico-chemical variables from 28 sites contrasted by land use across five\nheadwater catchments in Germany. Based on linear mixed-effects models, we\nshowed that land use was more significant than seasonality in controlling\nthe intra-annual variability of the GHGs. Streams in agriculture-dominated\ncatchments or with wastewater inflows had up to 10 times higher daily\nCO2, CH4, and N2O emissions and were also more temporally\nvariable (CV {\\textgreater} 55 \\%) than forested streams. Our findings also\nsuggested that nutrient, labile carbon, and dissolved GHG inputs from the\nagricultural and settlement areas may have supported these hotspots and\nhot-moments of fluvial GHG emissions. Overall, the annual emission from\nanthropogenic-influenced streams in CO2 equivalents was up to 20 times\nhigher (∼ 71 kg CO2 m−2 yr−1) than from\nnatural streams (∼ 3 kg CO2 m−2 yr−1), with\nCO2 accounting for up to 81 \\% of these annual emissions, while\nN2O and CH4 accounted for up to 18 \\% and 7 \\%, respectively. The\npositive influence of anthropogenic activities on fluvial GHG emissions also\nresulted in a breakdown of the expected declining trends of fluvial GHG\nemissions with stream size. Therefore, future studies should focus on\nanthropogenically perturbed streams, as their GHG emissions are much more\nvariable in space and time and can potentially introduce the largest\nuncertainties to fluvial GHG estimates.},\n\tlanguage = {en},\n\tnumber = {16},\n\turldate = {2024-11-15},\n\tjournal = {Biogeosciences},\n\tauthor = {Mwanake, Ricky Mwangada and Gettel, Gretchen Maria and Wangari, Elizabeth Gachibu and Glaser, Clarissa and Houska, Tobias and Breuer, Lutz and Butterbach-Bahl, Klaus and Kiese, Ralf},\n\tmonth = aug,\n\tyear = {2023},\n\tpages = {3395--3422},\n}\n\n\n\n\n\n\n\n","author_short":["Mwanake, R. M.","Gettel, G. M.","Wangari, E. G.","Glaser, C.","Houska, T.","Breuer, L.","Butterbach-Bahl, K.","Kiese, R."],"key":"mwanake_anthropogenic_2023","id":"mwanake_anthropogenic_2023","bibbaseid":"mwanake-gettel-wangari-glaser-houska-breuer-butterbachbahl-kiese-anthropogenicactivitiessignificantlyincreaseannualgreenhousegasghgfluxesfromtemperateheadwaterstreamsingermany-2023","role":"author","urls":{"Paper":"https://bg.copernicus.org/articles/20/3395/2023/"},"metadata":{"authorlinks":{}}},"bibtype":"article","biburl":"https://bibbase.org/zotero/tereno","dataSources":["cq3J5xX6zmBvc2TQC"],"keywords":[],"search_terms":["anthropogenic","activities","significantly","increase","annual","greenhouse","gas","ghg","fluxes","temperate","headwater","streams","germany","mwanake","gettel","wangari","glaser","houska","breuer","butterbach-bahl","kiese"],"title":"Anthropogenic activities significantly increase annual greenhouse gas (GHG) fluxes from temperate headwater streams in Germany","year":2023}