NDLI: Habitat patch size and isolation as predictors of occupancy and number of argyrodine spider kleptoparasites in Nephila webs

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Habitat patch size and isolation as predictors of occupancy and number of argyrodine spider kleptoparasites in Nephila webs

Content Provider	Springer Nature Link
Author	Agnarsson, Ingi
Copyright Year	2010
Abstract	How fully a suitable habitat patch is utilized by organisms depends crucially on patch size and isolation. Testing this interplay is made difficult in many systems by the arbitrariness of defining a “habitat patch”, measuring its boarders, and relatively low detection probability of the inhabitants. Spider webs as habitat patches for obligate web kleptoparasites are free from these problems. Each individual web is a highly discrete and readily measured habitat patch, and the detection probability of argyrodine spider kleptoparasites is very nearly 1. Hence, spider webs emerge as simple systems for ecological models such as patch occupancy and metapopulation biology. Recently, I showed that the distribution of kleptoparasites among host webs relates both to web (patch) size as well as patch connectivity. Here, I test the relative importance of patch size versus isolation in explaining patch occupancy and abundance of inhabitants. I find that (1) web size is the better predictor of patch occupancy and abundance. (2) Web size is overall positively correlated with abundance, but predicts it most precisely among interconnected webs and not at all among the most isolated webs. Hence, patch occupancy and inhabitant abundance is explained by a rather complex interplay between patch size and isolation.
Starting Page	163
Ending Page	167
Page Count	5
File Format	PDF
ISSN	00281042
Journal	Naturwissenschaften
Volume Number	98
Issue Number	2
e-ISSN	14321904
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-12-07
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Argyrodes elevates Faiditus americanus Patch size Occupancy Abundance Patch connectedness Spider webs Kleptoparasites Ideal free distribution Environment Life Sciences
Content Type	Text
Resource Type	Article
Subject	Medicine Ecology, Evolution, Behavior and Systematics

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