| Abstract: | Human activities have more than doubled the amount of nitrogen (N) circulating in the biosphere. One major pathway of this anthropogenic N input into ecosystems has been increased regional deposition from the atmosphere. Here we show that atmospheric N deposition increased the stoichiometric ratio of N and phosphorus (P) in lakes in Norway, Sweden, and Colorado, United States, and, as a result, patterns of ecological nutrient limitation were shifted. Under low N deposition, phytoplankton growth is generally N-limited; however, in high-N deposition lakes, phytoplankton growth is consistently P-limited. Continued anthropogenic amplification of the global N cycle will further alter ecological processes, such as biogeochemical cycling, trophic dynamics, and biological diversity, in the world‘s lakes, even in lakes far from direct human disturbance. |
| Genre: | Article |
| ProdID: | 70037456 |
| Citation Author: | Elser, J. J.; Andersen, T.; Baron, J. S.; Bergstrom, A. -K.; Jansson, M.; Kyle, M.; Nydick, K. R.; Steger, L.; Hessen, D. O. |
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| Citation End Page: | 837 |
| Citation Issue: | 5954 |
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| Citation Language: | English |
| Citation Larger Work Title: | Science |
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| Citation Number Of Pages: | 3 |
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| Citation Search Results Text: | Shifts in lake N: P stoichiometry and nutrient limitation driven by atmospheric nitrogen deposition; 2009; Article; Journal; Science; Elser, J. J.; Andersen, T.; Baron, J. S.; Bergstrom, A. -K.; Jansson, M.; Kyle, M.; Nydick, K. R.; Steger, L.; Hessen, D. O. |
| Citation Start Page: | 835 |
| Citation Volume: | 326 |
| Citation Year: | 2009 |
| Type: | citation/reference |
| Text: | Shifts in lake N: P stoichiometry and nutrient limitation driven by atmospheric nitrogen deposition; 2009; Article; Journal; Science; Elser, J. J.; Andersen, T.; Baron, J. S.; Bergstrom, A. -K.; Jansson, M.; Kyle, M.; Nydick, K. R.; Steger, L.; Hessen, D. O. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1126/science.1176199 |
| Date Other: | Thu, 1 Jan 2009 00:00 -0600 |
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