Effect of Habitat Fragmentation on Cyclic Population Dynamics: A Numerical Study

Through four spatially explicit models, we investigate how habitat fragmentation affects cyclic predator-prey population dynamics. We use a Partial Differential Equation (PDE) framework to describe the dispersal of predators and prey in a heterogeneous landscape made of high quality and low quality...

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Vydané v:	Bulletin of mathematical biology Ročník 71; číslo 6; s. 1323 - 1348
Hlavní autori:	Strohm, S, Tyson, R
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	New York New York : Springer-Verlag 01.08.2009 Springer-Verlag Springer Nature B.V
Predmet:	Algorithms Animals Animals, Wild - physiology Canada Cell Biology Computer Simulation Conservation of Natural Resources Ecosystem Environment Hares - physiology Life Sciences Lynx - physiology Lynx canadensis Mathematical and Computational Biology Mathematics Mathematics and Statistics Models, Biological Original Article Population Density Population Dynamics Predatory Behavior - physiology Canada Population cycles Spatial ecology Canada lynx and snowshoe hare Habitat loss Habitat separation Population dynamics Mathematical model Partial differential equation Fragmentation
ISSN:	0092-8240, 1522-9602, 1522-9602
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Popis
Shrnutí:	Through four spatially explicit models, we investigate how habitat fragmentation affects cyclic predator-prey population dynamics. We use a Partial Differential Equation (PDE) framework to describe the dispersal of predators and prey in a heterogeneous landscape made of high quality and low quality habitat patches, subject to increasing fragmentation through habitat separation and/or habitat loss. Our results show that habitat fragmentation decreases the amplitude of the predator-prey population cycles while average population density is not as strongly affected in general. Beyond these simple trends however, the four models show differing responses to fragmentation, indicating that when making predictions about population survival and persistence in the face of habitat fragmentation, the choice of model is important. Our results may inform conservation efforts in fragmented habitats for cyclic species such as the snowshoe hare and Canada lynx.
Bibliografia:	http://dx.doi.org/10.1007/s11538-009-9403-0 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 ObjectType-Article-2 ObjectType-Feature-1 content type line 23
ISSN:	0092-8240 1522-9602 1522-9602
DOI:	10.1007/s11538-009-9403-0