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Warming and Resource Availability Shift Food Web Structure and Metabolism
Climate change disrupts ecological systems in many ways. Many documented responses depend on species' life histories, contributing to the view that climate change effects are important but difficult to characterize generally. However, systematic variation in metabolic effects of temperature acr...
Autores principales: | , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2009
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2723928/ https://www.ncbi.nlm.nih.gov/pubmed/19707271 http://dx.doi.org/10.1371/journal.pbio.1000178 |
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author | O'Connor, Mary I. Piehler, Michael F. Leech, Dina M. Anton, Andrea Bruno, John F. |
author_facet | O'Connor, Mary I. Piehler, Michael F. Leech, Dina M. Anton, Andrea Bruno, John F. |
author_sort | O'Connor, Mary I. |
collection | PubMed |
description | Climate change disrupts ecological systems in many ways. Many documented responses depend on species' life histories, contributing to the view that climate change effects are important but difficult to characterize generally. However, systematic variation in metabolic effects of temperature across trophic levels suggests that warming may lead to predictable shifts in food web structure and productivity. We experimentally tested the effects of warming on food web structure and productivity under two resource supply scenarios. Consistent with predictions based on universal metabolic responses to temperature, we found that warming strengthened consumer control of primary production when resources were augmented. Warming shifted food web structure and reduced total biomass despite increases in primary productivity in a marine food web. In contrast, at lower resource levels, food web production was constrained at all temperatures. These results demonstrate that small temperature changes could dramatically shift food web dynamics and provide a general, species-independent mechanism for ecological response to environmental temperature change. |
format | Text |
id | pubmed-2723928 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-27239282009-08-25 Warming and Resource Availability Shift Food Web Structure and Metabolism O'Connor, Mary I. Piehler, Michael F. Leech, Dina M. Anton, Andrea Bruno, John F. PLoS Biol Research Article Climate change disrupts ecological systems in many ways. Many documented responses depend on species' life histories, contributing to the view that climate change effects are important but difficult to characterize generally. However, systematic variation in metabolic effects of temperature across trophic levels suggests that warming may lead to predictable shifts in food web structure and productivity. We experimentally tested the effects of warming on food web structure and productivity under two resource supply scenarios. Consistent with predictions based on universal metabolic responses to temperature, we found that warming strengthened consumer control of primary production when resources were augmented. Warming shifted food web structure and reduced total biomass despite increases in primary productivity in a marine food web. In contrast, at lower resource levels, food web production was constrained at all temperatures. These results demonstrate that small temperature changes could dramatically shift food web dynamics and provide a general, species-independent mechanism for ecological response to environmental temperature change. Public Library of Science 2009-08-25 /pmc/articles/PMC2723928/ /pubmed/19707271 http://dx.doi.org/10.1371/journal.pbio.1000178 Text en O'Connor et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article O'Connor, Mary I. Piehler, Michael F. Leech, Dina M. Anton, Andrea Bruno, John F. Warming and Resource Availability Shift Food Web Structure and Metabolism |
title | Warming and Resource Availability Shift Food Web Structure and Metabolism |
title_full | Warming and Resource Availability Shift Food Web Structure and Metabolism |
title_fullStr | Warming and Resource Availability Shift Food Web Structure and Metabolism |
title_full_unstemmed | Warming and Resource Availability Shift Food Web Structure and Metabolism |
title_short | Warming and Resource Availability Shift Food Web Structure and Metabolism |
title_sort | warming and resource availability shift food web structure and metabolism |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2723928/ https://www.ncbi.nlm.nih.gov/pubmed/19707271 http://dx.doi.org/10.1371/journal.pbio.1000178 |
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