Continuous dispersal in a model of predator–prey-subsidy population dynamics
Spatial dispersion and clustering of populations is important for a complete understanding of ecological dynamics in many ecosystems. Motivated by an Arctic ecosystem involving foxes (predator), lemmings (prey), and seal carrion (subsidy), we extend the spatially homogeneous (island) model of predat...
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Online Access: | http://www.sciencedirect.com/science/article/pii/S0304380016307724 |
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ftrepec:oai:RePEc:eee:ecomod:v:354:y:2017:i:c:p:115-122 2024-04-14T08:07:56+00:00 Continuous dispersal in a model of predator–prey-subsidy population dynamics Bassett, Alastair Krause, Andrew L. Van Gorder, Robert A. http://www.sciencedirect.com/science/article/pii/S0304380016307724 unknown http://www.sciencedirect.com/science/article/pii/S0304380016307724 article ftrepec 2024-03-19T10:40:01Z Spatial dispersion and clustering of populations is important for a complete understanding of ecological dynamics in many ecosystems. Motivated by an Arctic ecosystem involving foxes (predator), lemmings (prey), and seal carrion (subsidy), we extend the spatially homogeneous (island) model of predator–prey-subsidy dynamics originally proposed in Nevai and Van Gorder (2012) to account for dispersion of predator and prey populations throughout a two-dimensional domain. Our model has qualitatively similar behaviours in large regions of parameter space to the aforementioned island model. Quantitative effects due to varying the rate of dispersal and restricting the spatial extent of the subsidy are demonstrated. We observe nontrivial clustering of the predator and prey populations due to the presence of the subsidy only in a specific subregion of the domain, which suggests a novel mechanism of spatial partitioning and pattern formation due to the presence of subsidy in only part of the region of interest. Spatial population dynamics; Allochthonous resource subsidy; Predator–prey dynamics; Article in Journal/Newspaper Arctic RePEc (Research Papers in Economics) Arctic |
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Open Polar |
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RePEc (Research Papers in Economics) |
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language |
unknown |
description |
Spatial dispersion and clustering of populations is important for a complete understanding of ecological dynamics in many ecosystems. Motivated by an Arctic ecosystem involving foxes (predator), lemmings (prey), and seal carrion (subsidy), we extend the spatially homogeneous (island) model of predator–prey-subsidy dynamics originally proposed in Nevai and Van Gorder (2012) to account for dispersion of predator and prey populations throughout a two-dimensional domain. Our model has qualitatively similar behaviours in large regions of parameter space to the aforementioned island model. Quantitative effects due to varying the rate of dispersal and restricting the spatial extent of the subsidy are demonstrated. We observe nontrivial clustering of the predator and prey populations due to the presence of the subsidy only in a specific subregion of the domain, which suggests a novel mechanism of spatial partitioning and pattern formation due to the presence of subsidy in only part of the region of interest. Spatial population dynamics; Allochthonous resource subsidy; Predator–prey dynamics; |
format |
Article in Journal/Newspaper |
author |
Bassett, Alastair Krause, Andrew L. Van Gorder, Robert A. |
spellingShingle |
Bassett, Alastair Krause, Andrew L. Van Gorder, Robert A. Continuous dispersal in a model of predator–prey-subsidy population dynamics |
author_facet |
Bassett, Alastair Krause, Andrew L. Van Gorder, Robert A. |
author_sort |
Bassett, Alastair |
title |
Continuous dispersal in a model of predator–prey-subsidy population dynamics |
title_short |
Continuous dispersal in a model of predator–prey-subsidy population dynamics |
title_full |
Continuous dispersal in a model of predator–prey-subsidy population dynamics |
title_fullStr |
Continuous dispersal in a model of predator–prey-subsidy population dynamics |
title_full_unstemmed |
Continuous dispersal in a model of predator–prey-subsidy population dynamics |
title_sort |
continuous dispersal in a model of predator–prey-subsidy population dynamics |
url |
http://www.sciencedirect.com/science/article/pii/S0304380016307724 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
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Arctic |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0304380016307724 |
_version_ |
1796305349086543872 |