Indirect effects and spatial scaling affect the persistence of multispecies metapopulations

Quantifying the role of space and spatial scale on the population dynamics of ecological assemblages is a contemporary challenge in ecology. Here, we evaluate the role of metapopulation dynamics on the persistence and dynamics of a multispecies predator-prey assemblage where two prey species shared...

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Bibliographic Details
Published in:Proceedings of the Royal Society. B, Biological sciences Biological sciences, 2005-07, Vol.272 (1571), p.1465-1471
Main Authors: Bonsall, M.B, Bull, J.C, Pickup, N.J, Hassell, M.P
Format: Article
Language:English
Subjects:
Anisopteromalus calandrae
Apparent Competition
Callosobruchus chinensis
Callosobruchus maculatus
Computer Simulation
Demographic Stochasticity
Demography
Ecological competition
Ecology
Ecosystem
Environment
Extinction
Food Chain
Habitats
host-parasite relationships
intraspecific competition
Metapopulation ecology
Models, Biological
Natural enemies
nonlinear models
parasitoids
Population Dynamics
Population ecology
Population Persistence
Species
Species extinction
Species Specificity
statistical models
Stochastic Processes
Time Factors
Time Series
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Summary:Quantifying the role of space and spatial scale on the population dynamics of ecological assemblages is a contemporary challenge in ecology. Here, we evaluate the role of metapopulation dynamics on the persistence and dynamics of a multispecies predator-prey assemblage where two prey species shared a common natural enemy (apparent competition). By partitioning the effects of increased resource availability from the effects of metapopulation structure on regional population persistence we show that space has a marked impact on the dynamics of apparent competition in multispecies predator-prey assemblages. Further, the role of habitat size and stochasticity are also shown to influence the dynamics and persistence of this multispecies interaction. The broader consequences of these processes are discussed.
ISSN:0962-8452
1471-2954
DOI:10.1098/rspb.2005.3111