What Drives Variation in Habitat Use by Anolis Lizards: Habitat Availability or Selectivity?

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What Drives Variation in Habitat Use by Anolis Lizards: Habitat Availability or Selectivity?

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Title: What Drives Variation in Habitat Use by Anolis Lizards: Habitat Availability or Selectivity?
Author: Johnson, Michele A.; Losos, Jonathan; Kirby, Rebecca; Wang, Sue

Note: Order does not necessarily reflect citation order of authors.

Citation: Johnson, M. A., R. Kirby, S. Wang, and J. B. Losos. 2006. What drives variation in habitat use by Anolis lizards: habitat availability or selectivity? Canadian Journal of Zoology-Revue Canadienne De Zoologie 84, no. 6: 877-886.
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Abstract: Geographic variation in habitat availability may drive geographic variation in a species' habitat use; alternatively, species adapted to particular habitat characteristics may use a habitat regardless of its availability within an environment. In this study, we investigated habitat use of two sympatric species of Anolis lizards that are morphologically specialized to use different microhabitats. We examined variation in microhabitat use and availability among four distinct forest types. In each forest type, we quantified available microhabitats (i.e., perch diameter, angle of inclination, and visibility), as well as microhabitats actually used by each species. We found that species consistently differed in microhabitat use, corresponding to each species' morphological specializations. However, microhabitat use of both species varied among sites. This variation in Anolis gundlachi Peters, 1876 reflected differences in microhabitat availability, while the variation in Anolis krugi Peters, 1876 resulted from differential microhabitat selectivity. These results indicate that both habitat availability and habitat preferences must be examined in multiple localities for a species to understand the causes of variation in its habitat use.
Published Version: http://dx.doi.org/10.1139/Z06-068
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:2710387

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  • FAS Scholarly Articles [7219]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

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