Document Detail

Lemur responses to edge effects in the Vohibola III classified forest, Madagascar.
MedLine Citation:
PMID:  16477598     Owner:  NLM     Status:  MEDLINE    
Forest edges are dynamic zones characterized by the penetration (to varying depths and intensities) of conditions from the surrounding environment (matrix) into the forest interior. Although edge effects influence many tropical organisms, they have not been studied directly in primates. Edge effects are particularly relevant to lemurs because of the highly fragmented forest landscapes found in Madagascar. In this study, data are presented regarding how the densities of six lemur species (Avahi laniger, Cheirogaleus major, Eulemur rubriventer, Hapalemur griseus griseus, Microcebus rufus, and Propithecus diadema edwardsi) varied between six 500-m interior transects and six 500-m edge transects in the Vohibola III Classified Forest in SE Madagascar. Diurnal (n = 433) and nocturnal (n = 128) lemur surveys were conducted during June-October 2003 and May-November 2004. A. laniger, E. rubriventer, and H. g. griseus exhibited a neutral edge response (no differences in densities between habitats). M. rufus and P. d. edwardsi had a positive edge response (higher densities in edge habitats), which may be related to edge-related variations in food abundance and quality. Positive edge responses by M. rufus and P. d. edwardsi may ultimately be detrimental due to edge-related anthropogenic factors (e.g., hunting by local people). The negative edge response exhibited by C. major (lower densities in edge habitats) may result from heightened ambient temperatures that inhibit torpor in edge habitats.
Shawn M Lehman; Andry Rajaonson; Sabine Day
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of primatology     Volume:  68     ISSN:  0275-2565     ISO Abbreviation:  Am. J. Primatol.     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2006-02-21     Completed Date:  2006-04-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8108949     Medline TA:  Am J Primatol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  293-9     Citation Subset:  IM    
Department of Anthropology, University of Toronto, Toronto, Canada.
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MeSH Terms
Behavior, Animal*
Lemur / physiology*
Population Density

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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