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Nitrogen and phosphorus loads to temperate seepage lakes associated with allochthonous dissolved organic carbon loads

Show simple item record Corman, J.R. Bertolet, B.L. Casson, N.J. Sebestyen, S.D. Kolka, R.K. Stanley, E.H. 2018-09-25T21:30:20Z 2018-09-25T21:30:20Z 2018-06-16
dc.identifier.citation Corman, J.R., B.L. Bertolet, N.J. Casson, S.D. Sebestyen, R.K. Kolka, E.H. Stanley. "Nitrogen and phosphorus loads to temperate seepage lakes associated with allochthonous dissolved organic carbon loads." Geophysical Research Letters 45(11) (16 June 2018). DOI: 10.1029/2018GL077219. en_US
dc.identifier.issn 0094-8276
dc.description.abstract Terrestrial loads of dissolved organic matter (DOM) have increased in recent years in many north temperate lakes. While much of the focus on the “browning” phenomena has been on its consequences for carbon cycling, much less is known about how it influences nutrient loading to lakes. We characterize potential loads of nitrogen and phosphorus to seepage lakes in northern Wisconsin, USA, based on a laboratory soil leaching experiment and a model that includes landscape cover and watershed area. In these seepage lakes, nutrient concentrations are positively correlated with dissolved organic carbon concentrations (nitrogen: r = 0.68, phosphorus: r = 0.54). Using long‐term records of browning, we found that dissolved organic matter‐associated nutrient loadings may have resulted in substantial increases in nitrogen and phosphorus in seepage lakes and could account for currently observed nutrient concentrations in the lake. “Silent” nutrient loadings to brown‐water lakes may lead to future water‐quality concerns. PLAIN LANGUAGE SUMMARY: The color of many temperate lakes is changing; some lakes are becoming more darkly stained brown. The tea‐colored stain is due to dissolved organic matter from the surrounding landscape. Much of the research related to the causes and consequences of increased staining, or “brownification,” relate to its connection to the carbon cycle. However, by examining long‐term lake chemical records, analyzing the properties of the organic compounds, and modeling potential flows of the compounds, we find that carbon is not the only element that is influenced by browning. Nitrogen and phosphorus, two nutrients important to growth of organisms at the base of the food web, may also be increasing in lakes due to brownification. en_US
dc.description.sponsorship "Funding for this research was supported by the Northern Research Station and the Chequamegon-Nicolet National Forest (CNNF) of the United States Department of Agriculture (USDA) Forest Service and a National Science Foundation (NSF) grant to the University of Wisconsin-Madison to support the North Temperate Lakes Long-Term Ecological Research (NTLLTER) Site (DEB-#1440297)." en_US
dc.description.uri en_US
dc.language.iso en en_US
dc.publisher American Geophysical Union en_US
dc.subject Hydrology and Land Surface Studies en_US
dc.subject BIOGEOSCIENCES: Biogeochemical cycles, processes, and modeling, Biogeochemical kinetics and reaction modeling, Limnology, Nutrients and nutrient cycling en_US
dc.subject CRYOSPHERE: Biogeochemistry en_US
dc.subject GEODESY AND GRAVITY: Global change from geodesy en_US
dc.subject GLOBAL CHANGE: Biogeochemical cycles, processes, and modeling, Impacts of global change en_US
dc.subject HYDROLOGY: Limnology, Watershed en_US
dc.subject OCEANOGRAPHY: GENERAL: Limnology en_US
dc.subject NATURAL HAZARDS: Climate impact en_US
dc.subject OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL: Biogeochemical cycles, processes, and modeling, Nutrients and nutrient cycling, Marine organic chemistry en_US
dc.subject PALEOCEANOGRAPHY: Biogeochemical cycles, processes, and modeling, Limnology en_US
dc.title Nitrogen and phosphorus loads to temperate seepage lakes associated with allochthonous dissolved organic carbon loads en_US
dc.type Article en_US
dc.identifier.doi 10.1029/2018GL077219 en_US

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