| Effect of resource subsidies on predator-prey population dynamics: a mathematical model. | |
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MedLine Citation:
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PMID: 22877320 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The influence of a resource subsidy on predator-prey interactions is examined using a mathematical model. The model arises from the study of a biological system involving arctic foxes (predator), lemmings (prey), and seal carcasses (subsidy). In one version of the model, the predator, prey and subsidy all occur in the same location; in a second version, the predator moves between two patches, one containing only the prey and the other containing only the subsidy. Criteria for feasibility and stability of the different equilibrium states are studied both analytically and numerically. At small subsidy input rates, there is a minimum prey carrying capacity needed to support both predator and prey. At intermediate subsidy input rates, the predator and prey can always coexist. At high subsidy input rates, the prey cannot persist even at high carrying capacities. As predator movement increases, the dynamic stability of the predator-prey-subsidy interactions also increases. |
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Authors:
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Andrew L Nevai; Robert A Van Gorder |
Publication Detail:
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Type: Journal Article Date: 2012-04-26 |
Journal Detail:
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Title: Journal of biological dynamics Volume: 6 ISSN: 1751-3766 ISO Abbreviation: J Biol Dyn Publication Date: 2012 Mar |
Date Detail:
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Created Date: 2012-08-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101299725 Medline TA: J Biol Dyn Country: England |
Other Details:
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Languages: eng Pagination: 891-922 Citation Subset: IM |
Affiliation:
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a Department of Mathematics , University of Central Florida , Orlando , FL , 32816 , USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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