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Impacts of dispersal limitation on temporal biodiversity patterns in a neutral model

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  • Chen, Youhua

Abstract

In this brief report, potential impacts of different dispersal assumptions on the temporal biodiversity patterns in a neutral model were evaluated using a simple spatially explicit lattice model. The results show that, immigration from metacommunity is much more important than local dispersal from neighboring sites to determine the temporal species richness of local neutral community. Such an observation was consistent over different initial configurations and various immigration rates. Moreover, the calculation of Jaccard's similarity index suggests that, when regional immigration is spatially limited (i.e., individuals of species can only disperse to the edge areas of the local community from the metacommunity), temporal species compositional similarity would be usually larger than those scenarios where regional immigration is not limited. That is, species replacement in spatially limited scenarios is much slower than those scenarios where dispersal of species is unlimited. In conclusion, regional dispersal limitation plays deterministic roles on structuring species diversity patterns in local neutral communities.

Suggested Citation

  • Chen, Youhua, 2015. "Impacts of dispersal limitation on temporal biodiversity patterns in a neutral model," Ecological Modelling, Elsevier, vol. 305(C), pages 22-28.
    • Handle: RePEc:eee:ecomod:v:305:y:2015:i:c:p:22-28
    DOI: 10.1016/j.ecolmodel.2015.03.007
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    References listed on IDEAS

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    1. Babak, Petro & He, Fangliang, 2009. "A neutral model of edge effects," Theoretical Population Biology, Elsevier, vol. 75(1), pages 76-83.
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    Cited by:

    1. Chen, Youhua, 2016. "Local speciation can be incorporated into neutral theory of biodiversity," Ecological Modelling, Elsevier, vol. 325(C), pages 67-70.

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