A Coherent Signature of Anthropogenic Nitrogen Deposition to Remote Watersheds of the Northern Hemisphere
(2011) In Science 334(6062). p.1545-1548- Abstract
- 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,... (More)
- 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. (Less)
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- author
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Science
- volume
- 334
- issue
- 6062
- pages
- 1545 - 1548
- publisher
- American Association for the Advancement of Science (AAAS)
- external identifiers
-
- wos:000298091400050
- scopus:83755169218
- pmid:22174250
- ISSN
- 1095-9203
- DOI
- 10.1126/science.1212267
- language
- English
- LU publication?
- yes
- id
- e5fe3590-bcbe-4aba-a7df-a0255d1ecb76 (old id 2279375)
- date added to LUP
- 2016-04-01 13:26:13
- date last changed
- 2022-04-21 21:41:46
@article{e5fe3590-bcbe-4aba-a7df-a0255d1ecb76, abstract = {{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.}}, author = {{Holtgrieve, Gordon W. and Schindler, Daniel E. and Hobbs, William O. and Leavitt, Peter R. and Ward, Eric J. and Bunting, Lynda and Chen, Guangjie and Finney, Bruce P. and Gregory-Eaves, Irene and Holmgren, Sofia and Lisac, Mark J. and Lisi, Peter J. and Nydick, Koren and Rogers, Lauren A. and Saros, Jasmine E. and Selbie, Daniel T. and Shapley, Mark D. and Walsh, Patrick B. and Wolfe, Alexander P.}}, issn = {{1095-9203}}, language = {{eng}}, number = {{6062}}, pages = {{1545--1548}}, publisher = {{American Association for the Advancement of Science (AAAS)}}, series = {{Science}}, title = {{A Coherent Signature of Anthropogenic Nitrogen Deposition to Remote Watersheds of the Northern Hemisphere}}, url = {{http://dx.doi.org/10.1126/science.1212267}}, doi = {{10.1126/science.1212267}}, volume = {{334}}, year = {{2011}}, }