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A Coherent Signature of Anthropogenic Nitrogen Deposition to Remote Watersheds of the Northern Hemisphere

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WOS被引频次:149
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成果类型:
期刊论文
作者:
Holtgrieve, Gordon W.;Schindler, Daniel E.;Hobbs, William O.;Leavitt, Peter R.;Ward, Eric J.;Bunting, Lynda;Chen, Guangjie;Finney, Bruce P.;Gregory-Eaves, Irene;Holmgren, Sofia;Lisac, Mark J.;Lisi, Peter J.;Nydick, Koren;Rogers, Lauren A.;Saros, Jasmine E.;Selbie, Daniel T.;Shapley, Mark D.;Walsh, Patrick B.;Wolfe, Alexander P.
通讯作者:
Holtgrieve, GW
作者机构:
[Ward, Eric J.] Natl Ocean & Atmospher Adm, Natl Marine Fisheries Serv, NW Fisheries Sci Ctr, Seattle, WA USA.
[Shapley, Mark D.; Finney, Bruce P.] Idaho State Univ, Dept Geosci, Pocatello, ID 83209 USA.
[Shapley, Mark D.; Finney, Bruce P.] Idaho State Univ, Dept Biol Sci, Pocatello, ID 83209 USA.
[Hobbs, William O.] Sci Museum Minnesota, St Croix Watershed Res Stn, Marine St Croix, MN USA.
[Lisac, Mark J.; Walsh, Patrick B.] US Fish & Wildlife Serv, Dillingham, AK USA.
通讯机构:
[Holtgrieve, GW] Univ Washington, Sch Aquat & Fishery Sci, Seattle, WA 98195 USA.
语种:
英文
期刊:
SCIENCE
ISSN:
0036-8075
年:
2011
卷:
334
期:
6062
页码:
1545-1548
文献类别:
WOS:Article
所属学科:
ESI学科类别:环境科学/生态学;WOS学科类别:Multidisciplinary Sciences
入藏号:
基金类别:
Gordon and Betty Moore Foundation; U.S. Fish and Wildlife Service; Togiak National Wildlife Refuge; Alberta Water Research Institute; Natural Sciences and Engineering Research Council of Canada; NSF; Canada Foundation for Innovation
机构署名:
本校为其他机构
院系归属:
旅游与地理科学学院
摘要:
Humans have more than doubled the amount of reactive nitrogen (Nr) added to the biosphere, yet most of what is known about its accumulation and ecological effects is derived from studies of heavily populated regions. Nitrogen (N) stable isotope ratios (N-15:N-14) in dated sediments from 25 remote Northern Hemisphere lakes show a coherent signal of an isotopically distinct source of N to ecosystems beginning in 1895 +/- 10 years (+/- 1 standard deviation). Initial shifts in N isotope composition recorded in lake sediments coincide with anthropogenic CO2 emissions but accelerate with widespread industrial Nr production during the past half century. Although current atmospheric Nr deposition rates in remote regions are relatively low, anthropogenic N has probably influenced watershed N budgets across the Northern Hemisphere for over a century.
参考文献:
Baron JS, 2011, BIOSCIENCE, V61, P602, DOI 10.1525/bio.2011.61.8.6
Bergstrom AK, 2006, GLOBAL CHANGE BIOL, V12, P635, DOI 10.1111/j.1365-2486.2006.01129.x
Bunting L, 2010, LIMNOL OCEANOGR, V55, P333, DOI 10.4319/lo.2010.55.1.0333
Dentener F., 2006, CYCLES, V20
Elser JJ, 2009, SCIENCE, V326, P835, DOI 10.1126/science.1176199

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