气候变化领域集成服务门户(CCPortal): Lake hydrodynamics intensify the potential impact of watershed pollutants on coastal ecosystem services

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DOI	10.1088/1748-9326/ab7f62
	Lake hydrodynamics intensify the potential impact of watershed pollutants on coastal ecosystem services
	Gloege L.; McKinley G.A.; Mooney R.J.; Allan J.D.; Diebel M.W.; McIntyre P.B.
发表日期	2020
ISSN	17489318
卷号	15 期号:6
英文摘要	Watersheds deliver numerous pollutants to the coastline of oceans and lakes, thereby jeopardizing ecosystem services. Regulatory frameworks for stressors often focus on loading rates without accounting for the physical dynamics of the receiving water body. Here, we use a three-dimensional hydrodynamic model to simulate the transport of a generic tributary-delivered anthropogenic pollutant within Lake Michigan based on the location and timing of loading. Simulating pollutant plumes from 11 rivers, and their intersections with coastal ecosystem services, reveals strong mediation of potential impacts by lake physics. Trapped pollutants accumulate in nearshore waters during spring peak flows, and become diluted by spreading offshore during the summer. The threat to coastal ecosystem services posed by pollutant loading differs sharply among rivers; high potential impact arises from the spatiotemporal coincidence of tributary input rates, lake mixing dynamics, and multiple human uses of the shoreline. Simultaneous pollution from multiple rivers yields overlapping plumes, creating a second way in which lake hydrodynamics can amplify potential impacts on coastal ecosystem services. Our simulations demonstrate that the physical dynamics of large water bodies can create a dynamic stressor landscape arising from multiple independent sources of non-point-source pollution. The design and implementation of pollution regulations rarely account for spatial and temporal complexities of load processing in receiving waters, yet the resulting variability is likely to strongly mediate impacts on society. As hydrodynamic models improve, our analytical framework could be applied to a wide range of pollutants and waterbodies to enhance the sustainable use of coastal ecosystems. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	eutrophication; Great Lakes; Lake Michigan; nutrient loading; TMDL; total maximum daily load
语种	英语
scopus关键词	Ecosystems; Hydrodynamics; Lakes; Offshore oil well production; Rivers; Anthropogenic pollutants; Coastal ecosystem services; Design and implementations; Non-point source pollution; Pollution regulation; Receiving water bodies; Regulatory frameworks; Three-dimensional hydrodynamic modeling; River pollution; anthropogenic effect; coastal zone; complexity; ecosystem service; hydrodynamics; lake water; peak flow; pollutant transport; regulatory framework; three-dimensional modeling; watershed; Great Lakes [North America]; Lake Michigan
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154004
作者单位	Atmospheric and Oceanic Sciences, University of Wisconsin-Madison, 1225 W. Dayton Street, Madison, WI 53706, United States; Lamont-Doherty Earth Observatory, Columbia University, 61 US-9W, Palisades, NY 10964, United States; Center for Limnology, University of Wisconsin-Madison, 680 N. Park Street, Madison, WI 53706, United States; School for Environment and Sustainability, University of Michigan, 440 Church Street, Ann Arbor, MI 48109, United States; Dane County Land and Water Resources Department, 5201 Fen Oak Drive, Madison, WI 53706, United States; Department of Natural Resources, Cornell University, Fernow Hall, 226 Mann Drive, Ithaca, NY 14853, United States
推荐引用方式 GB/T 7714	Gloege L.,McKinley G.A.,Mooney R.J.,et al. Lake hydrodynamics intensify the potential impact of watershed pollutants on coastal ecosystem services[J],2020,15(6).
APA	Gloege L.,McKinley G.A.,Mooney R.J.,Allan J.D.,Diebel M.W.,&McIntyre P.B..(2020).Lake hydrodynamics intensify the potential impact of watershed pollutants on coastal ecosystem services.Environmental Research Letters,15(6).
MLA	Gloege L.,et al."Lake hydrodynamics intensify the potential impact of watershed pollutants on coastal ecosystem services".Environmental Research Letters 15.6(2020).