Salting our freshwater lakes

Autor: Ana M. Morales-Williams, Derek C. Roberts, Jamie C. Summers, Ian M. McCullough, Nicholas K. Skaff, Zutao Ouyang, Flora E. Krivak-Tetley, Kathleen C. Weathers, Sarah L. Bartlett, Paul C. Hanson, Jonathan P. Doubek, Samantha M. Burke, Kaitlin J. Farrell, Hilary A. Dugan, Facundo Scordo
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Popis: The highest densities of lakes on Earth are in north temperate ecosystems, where increasing urbanization and associated chloride runoff can salinize freshwaters and threaten lake water quality and the many ecosystem services lakes provide. However, the extent to which lake salinity may be changing at broad spatial scales remains unknown, leading us to first identify spatial patterns and then investigate the drivers of these patterns. Significant decadal trends in lake salinization were identified using a dataset of long-term chloride concentrations from 371 North American lakes. Landscape and climate metrics calculated for each site demonstrated that impervious land cover was a strong predictor of chloride trends in Northeast and Midwest North American lakes. As little as 1% impervious land cover surrounding a lake increased the likelihood of long-term salinization. Considering that 27% of large lakes in the United States have >1% impervious land cover around their perimeters, the potential for steady and long-term salinization of these aquatic systems is high. This study predicts that many lakes will exceed the aquatic life threshold criterion for chronic chloride exposure (230 mg L −1), stipulated by the US Environmental Protection Agency (EPA), in the next 50 y if current trends continue. Fil: Dugan, Hilary A.. University of Wisconsin–Madison; Estados Unidos. Cary Institute of Ecosystem Studies; Estados Unidos. University of California at Davis; Estados Unidos Fil: Bartlett, Sarah L.. University of Wisconsin–Milwaukee. School of Freshwater Sciences; Estados Unidos Fil: Burke, Samantha M.. University of Waterloo. Department of Biology; Estados Unidos Fil: Doubek, Jonathan P.. Virginia Tech. Department Of Biological Sciences; Estados Unidos Fil: Krivak Tetley, Flora E.. Dartmouth College. Department Of Biological Sciences; Estados Unidos Fil: Skaff, Nicholas K.. Michigan State University. Department Of Fisheries And Wildlife; Estados Unidos Fil: Summers, Jamie C.. Queens University. Department Of Biology; Canadá Fil: Farrell, Kaitlin J.. University Of Georgia. Odum School Of Ecology; Estados Unidos Fil: McCullough, Ian M.. University of California. Bren School Of Environmental Science And Management; Estados Unidos Fil: Morales Williams, Ana M.. Iowa State University. Department Of Ecology; Estados Unidos Fil: Roberts, Derek C.. University of California at Davis; Estados Unidos. UC Davis Tahoe Environmental Research Center; Estados Unidos Fil: Ouyang, Zutao. Michigan State University. Center for Global Change and Earth Observations; Estados Unidos Fil: Scordo, Facundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina Fil: Hanson, Paul C.. University of Wisconsin–Madison. Center for Limnology; Estados Unidos Fil: Weathers, Kathleen C.. Cary Institute of Ecosystem Studies; Estados Unidos
Databáze: OpenAIRE
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