A gradient of nutrient enrichment reveals nonlinear impacts of fertilization on Arctic plant diversity and ecosystem function
Abstract Rapid environmental change at high latitudes is predicted to greatly alter the diversity, structure, and function of plant communities, resulting in changes in the pools and fluxes of nutrients. In Arctic tundra, increased nitrogen (N) and phosphorus (P) availability accompanying warming is...
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Online Access: | http://dx.doi.org/10.1002/ece3.2863 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.2863 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.2863 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.2863 http://api.wiley.com/onlinelibrary/chorus/v1/articles/10.1002%2Fece3.2863 |
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crwiley:10.1002/ece3.2863 2024-09-15T18:39:45+00:00 A gradient of nutrient enrichment reveals nonlinear impacts of fertilization on Arctic plant diversity and ecosystem function Prager, Case M. Naeem, Shahid Boelman, Natalie T. Eitel, Jan U. H. Greaves, Heather E. Heskel, Mary A. Magney, Troy S. Menge, Duncan N.L. Vierling, Lee A. Griffin, Kevin L. National Aeronautics and Space Administration Division of Graduate Education 2017 http://dx.doi.org/10.1002/ece3.2863 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.2863 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.2863 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.2863 http://api.wiley.com/onlinelibrary/chorus/v1/articles/10.1002%2Fece3.2863 en eng Wiley http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 7, issue 7, page 2449-2460 ISSN 2045-7758 2045-7758 journal-article 2017 crwiley https://doi.org/10.1002/ece3.2863 2024-08-01T04:20:26Z Abstract Rapid environmental change at high latitudes is predicted to greatly alter the diversity, structure, and function of plant communities, resulting in changes in the pools and fluxes of nutrients. In Arctic tundra, increased nitrogen (N) and phosphorus (P) availability accompanying warming is known to impact plant diversity and ecosystem function; however, to date, most studies examining Arctic nutrient enrichment focus on the impact of relatively large (>25x estimated naturally occurring N enrichment) doses of nutrients on plant community composition and net primary productivity. To understand the impacts of Arctic nutrient enrichment, we examined plant community composition and the capacity for ecosystem function (net ecosystem exchange, ecosystem respiration, and gross primary production) across a gradient of experimental N and P addition expected to more closely approximate warming‐induced fertilization. In addition, we compared our measured ecosystem CO 2 flux data to a widely used Arctic ecosystem exchange model to investigate the ability to predict the capacity for CO 2 exchange with nutrient addition. We observed declines in abundance‐weighted plant diversity at low levels of nutrient enrichment, but species richness and the capacity for ecosystem carbon uptake did not change until the highest level of fertilization. When we compared our measured data to the model, we found that the model explained roughly 30%–50% of the variance in the observed data, depending on the flux variable, and the relationship weakened at high levels of enrichment. Our results suggest that while a relatively small amount of nutrient enrichment impacts plant diversity, only relatively large levels of fertilization—over an order of magnitude or more than warming‐induced rates—significantly alter the capacity for tundra CO 2 exchange. Overall, our findings highlight the value of measuring and modeling the impacts of a nutrient enrichment gradient, as warming‐related nutrient availability may impact ecosystems differently ... Article in Journal/Newspaper Tundra Wiley Online Library Ecology and Evolution 7 7 2449 2460 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Rapid environmental change at high latitudes is predicted to greatly alter the diversity, structure, and function of plant communities, resulting in changes in the pools and fluxes of nutrients. In Arctic tundra, increased nitrogen (N) and phosphorus (P) availability accompanying warming is known to impact plant diversity and ecosystem function; however, to date, most studies examining Arctic nutrient enrichment focus on the impact of relatively large (>25x estimated naturally occurring N enrichment) doses of nutrients on plant community composition and net primary productivity. To understand the impacts of Arctic nutrient enrichment, we examined plant community composition and the capacity for ecosystem function (net ecosystem exchange, ecosystem respiration, and gross primary production) across a gradient of experimental N and P addition expected to more closely approximate warming‐induced fertilization. In addition, we compared our measured ecosystem CO 2 flux data to a widely used Arctic ecosystem exchange model to investigate the ability to predict the capacity for CO 2 exchange with nutrient addition. We observed declines in abundance‐weighted plant diversity at low levels of nutrient enrichment, but species richness and the capacity for ecosystem carbon uptake did not change until the highest level of fertilization. When we compared our measured data to the model, we found that the model explained roughly 30%–50% of the variance in the observed data, depending on the flux variable, and the relationship weakened at high levels of enrichment. Our results suggest that while a relatively small amount of nutrient enrichment impacts plant diversity, only relatively large levels of fertilization—over an order of magnitude or more than warming‐induced rates—significantly alter the capacity for tundra CO 2 exchange. Overall, our findings highlight the value of measuring and modeling the impacts of a nutrient enrichment gradient, as warming‐related nutrient availability may impact ecosystems differently ... |
author2 |
National Aeronautics and Space Administration Division of Graduate Education |
format |
Article in Journal/Newspaper |
author |
Prager, Case M. Naeem, Shahid Boelman, Natalie T. Eitel, Jan U. H. Greaves, Heather E. Heskel, Mary A. Magney, Troy S. Menge, Duncan N.L. Vierling, Lee A. Griffin, Kevin L. |
spellingShingle |
Prager, Case M. Naeem, Shahid Boelman, Natalie T. Eitel, Jan U. H. Greaves, Heather E. Heskel, Mary A. Magney, Troy S. Menge, Duncan N.L. Vierling, Lee A. Griffin, Kevin L. A gradient of nutrient enrichment reveals nonlinear impacts of fertilization on Arctic plant diversity and ecosystem function |
author_facet |
Prager, Case M. Naeem, Shahid Boelman, Natalie T. Eitel, Jan U. H. Greaves, Heather E. Heskel, Mary A. Magney, Troy S. Menge, Duncan N.L. Vierling, Lee A. Griffin, Kevin L. |
author_sort |
Prager, Case M. |
title |
A gradient of nutrient enrichment reveals nonlinear impacts of fertilization on Arctic plant diversity and ecosystem function |
title_short |
A gradient of nutrient enrichment reveals nonlinear impacts of fertilization on Arctic plant diversity and ecosystem function |
title_full |
A gradient of nutrient enrichment reveals nonlinear impacts of fertilization on Arctic plant diversity and ecosystem function |
title_fullStr |
A gradient of nutrient enrichment reveals nonlinear impacts of fertilization on Arctic plant diversity and ecosystem function |
title_full_unstemmed |
A gradient of nutrient enrichment reveals nonlinear impacts of fertilization on Arctic plant diversity and ecosystem function |
title_sort |
gradient of nutrient enrichment reveals nonlinear impacts of fertilization on arctic plant diversity and ecosystem function |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1002/ece3.2863 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fece3.2863 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.2863 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.2863 http://api.wiley.com/onlinelibrary/chorus/v1/articles/10.1002%2Fece3.2863 |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Ecology and Evolution volume 7, issue 7, page 2449-2460 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.2863 |
container_title |
Ecology and Evolution |
container_volume |
7 |
container_issue |
7 |
container_start_page |
2449 |
op_container_end_page |
2460 |
_version_ |
1810484094781358080 |