| The dynamics of food chains under climate change and nutrient enrichment. | |
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MedLine Citation:
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PMID: 23007081 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Warming has profound effects on biological rates such as metabolism, growth, feeding and death of organisms, eventually affecting their ability to survive. Using a nonlinear bioenergetic population-dynamic model that accounts for temperature and body-mass dependencies of biological rates, we analysed the individual and interactive effects of increasing temperature and nutrient enrichment on the dynamics of a three-species food chain. At low temperatures, warming counteracts the destabilizing effects of enrichment by both bottom-up (via the carrying capacity) and top-down (via biological rates) mechanisms. Together with increasing consumer body masses, warming increases the system tolerance to fertilization. Simultaneously, warming increases the risk of starvation for large species in low-fertility systems. This effect can be counteracted by increased fertilization. In combination, therefore, two main drivers of global change and biodiversity loss can have positive and negative effects on food chain stability. Our model incorporates the most recent empirical data and may thus be used as the basis for more complex forecasting models incorporating food-web structure. |
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Authors:
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Amrei Binzer; Christian Guill; Ulrich Brose; Björn C Rall |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Philosophical transactions of the Royal Society of London. Series B, Biological sciences Volume: 367 ISSN: 1471-2970 ISO Abbreviation: Philos. Trans. R. Soc. Lond., B, Biol. Sci. Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-09-25 Completed Date: 2013-04-03 Revised Date: 2013-04-16 |
Medline Journal Info:
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Nlm Unique ID: 7503623 Medline TA: Philos Trans R Soc Lond B Biol Sci Country: England |
Other Details:
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Languages: eng Pagination: 2935-44 Citation Subset: IM |
Affiliation:
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J. F. Blumenbach Institute of Zoology and Anthropology, Georg-August University Göttingen, Göttingen, Germany. abinzer@uni-goettingen.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Biodiversity Biomass Biota Body Size Body Weight Climate Change* Energy Metabolism Extinction, Biological Fertilization Food* Food Chain* Population Dynamics Starvation / metabolism Temperature |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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