Document Detail

Habitat fragmentation and population size of the black and gold howler monkey (Alouatta caraya) in a semideciduous forest in Northern Argentina.
MedLine Citation:
PMID:  17358009     Owner:  NLM     Status:  MEDLINE    
A population of black and gold howler monkeys (Alouatta caraya) living near the southern limit of its distribution in a semideciduous forest located in northern Argentina was studied in 2003 to evaluate the possible effects of habitat fragmentation - owing to logging - on its density and social organization within it. Aerial photographs taken in 1982, 1992, and 2001 were used to compare maps of vegetation. These maps were used to evaluate changes in the area covered by forest fragments. From March to June 2003, 10-day monthly surveys of howlers were made in each fragment. A total of 232 individual howlers were counted, belonging to 34 groups plus a solitary adult female. Groups ranged from 2 to 19 individuals (mean = 6.82, SD = 4.23), and 21% of the groups contained more than one adult male. Adults accounted for 55% of the individuals, immatures for 45%, and infants represented 13% of the total. Data obtained were compared with information available for the same population for 1982 and 1995. Results revealed no significant changes in the area of fragments, the crude and ecological density of howlers, and group composition. Group sizes and group composition of howlers suggest that the population remained stable over the past 22 years. The density, number of groups, and individuals appears not to be affected by fragmentation and logging, but crude density was low compared with other less-disturbed habitats. The status of the population remains uncertain owing to isolation, and because there are no protected areas to ensure its stability for the future.
Gabriel E Zunino; Martin M Kowalewski; Luciana I Oklander; Viridiana González
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of primatology     Volume:  69     ISSN:  0275-2565     ISO Abbreviation:  Am. J. Primatol.     Publication Date:  2007 Sep 
Date Detail:
Created Date:  2007-08-06     Completed Date:  2007-10-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8108949     Medline TA:  Am J Primatol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  966-75     Citation Subset:  IM    
Copyright Information:
(c) 2007 Wiley-Liss, Inc.
Estación Biológica Corrientes, Museo Argentino De Ciencias Naturales, Argentina.
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MeSH Terms
Alouatta / physiology*
Conservation of Natural Resources
Population Density

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

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