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Patch quality and connectivity influence spatial dynamics in a dune wolfspider
Bonte, D.; Lens, L.; Maelfait, J.-P.; Hoffmann, M.; Kuijken, E. (2003). Patch quality and connectivity influence spatial dynamics in a dune wolfspider. Oecologia 135(2): 227-233. dx.doi.org/10.1007/s00442-003-1195-6
In: Oecologia. Springer: Heidelberg; Berlin. ISSN 0029-8549, more
Peer reviewed article  

Also published as
  • Bonte, D.; Lens, L.; Maelfait, J.-P.; Hoffmann, M.; Kuijken, E. (2004). Patch quality and connectivity influence spatial dynamics in a dune wolfspider, in: Bonte, D. Verspreiding van spinnen in grijze kustduinen: ruimtelijke patronen en evolutionair-ecologisch belang van dispersie = Distribution of spiders in coastal grey dunes: spatial patterns and evolutionary-ecological importance of dispersal. pp. 137-153, more

Available in Authors 
    VLIZ: Open Repository 66775 [ OMA ]

Keywords
Author keywords
    incidence function model; metapopulation; population genetics; cursorialdispersal; ballooning

Authors  Top 

Abstract
    The spatial population dynamics of the wolfspider Pardosa monticola, inhabiting patchily distributed grasslands in the Flemish coastal dunes of Belgium and Northern France were investigated with incidence function models using field survey data from 1998 and 2000. Vegetation height and patch size were related to habitat quality. Mark-recapture experiments revealed maximum cursorial dispersal distances of 280 m for moss dunes and 185 m for higher dune grassland. Higher shrub vegetation appeared to be dispersal barriers. These habitat-dependant cursorial distances and the theoretically estimated ballooning distance were included with patch distances into a connectivity index for both dispersal modes. Forward multiple regression indicated that patch occurrence was influenced by habitat quality and ballooning connectivity. Habitat quality and cursorial connectivity explained patterns in short-term colonisation. Extinction appeared to be stochastic and not related to habitat quality and connectivity. Genetic differentiation and variability was low. The discrepancy between the estimated low dispersal capacity and the indirect estimate of gene flow (FST) indicates that historical population dynamics and/or historical ballooning dispersal influence the genetic structure in this species.

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