Frost2008

Reference

Frost, C. (2008) Effects of dispersal and local dynamics on spider diversity (Araneae) in an old field system. Master's thesis, McGill University. (URL )

Abstract

Processes at multiple spatial scales can interact to structure community diversity. I looked at the effects of both dispersal and local dynamics on spider diversity in young buckthorn trees in an old field system in southwestern Québec, Canada. I investigated the rate, mechanism, and timescale of spider re-colonization of emptied trees and found that the rate fluctuated, peaking in mid-June and early August. Preventing cursorial immigration only significantly reduced immigrant abundance of the jumping spider guild (Salticidae), but it reduced species richness and changed taxonomic composition of immigrants. At peak immigration times, four days was enough time for emptied trees to be fully re-colonized such that spider abundance, species richness, and composition matched that in undisturbed trees, suggesting an important role for dispersal in structuring spider diversity in this system. I used a diversity addition experiment to test whether spider diversity is limited only by dispersal and found that local dynamics also limit spider diversity. This work contributes to understanding the forces structuring arboreal spider assemblages.

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@MASTERSTHESIS { Frost2008,
    AUTHOR = { Frost, C. },
    TITLE = { Effects of dispersal and local dynamics on spider diversity (Araneae) in an old field system },
    SCHOOL = { McGill University },
    YEAR = { 2008 },
    NOTE = { CEFTMS, Buddle, C.M. },
    ABSTRACT = { Processes at multiple spatial scales can interact to structure community diversity. I looked at the effects of both dispersal and local dynamics on spider diversity in young buckthorn trees in an old field system in southwestern Québec, Canada. I investigated the rate, mechanism, and timescale of spider re-colonization of emptied trees and found that the rate fluctuated, peaking in mid-June and early August. Preventing cursorial immigration only significantly reduced immigrant abundance of the jumping spider guild (Salticidae), but it reduced species richness and changed taxonomic composition of immigrants. At peak immigration times, four days was enough time for emptied trees to be fully re-colonized such that spider abundance, species richness, and composition matched that in undisturbed trees, suggesting an important role for dispersal in structuring spider diversity in this system. I used a diversity addition experiment to test whether spider diversity is limited only by dispersal and found that local dynamics also limit spider diversity. This work contributes to understanding the forces structuring arboreal spider assemblages. },
    OWNER = { Luc },
    TIMESTAMP = { 2010.11.11 },
    URL = { http://digitool.Library.McGill.CA:80/R/-?func=dbin-jump-full&object_id=32524&current_base=GEN01 },
}

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