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Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Effect of biomass on assemblages of large mammals in a seasonally dry forest in the Brazilian Amazonia
Authors: Mendes, Pontes Antonio Rossano
Chivers, David J
Lee, Phyllis C
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Keywords: Amazonian mammal assemblages
body mass
feeding strategies
Issue Date: Mar-2007
Publisher: Wiley-Blackwell / The Zoological Society of London
Citation: Mendes Pontes AR, Chivers DJ & Lee PC (2007) Effect of biomass on assemblages of large mammals in a seasonally dry forest in the Brazilian Amazonia, Journal of Zoology, 271 (3), pp. 278-287.
Abstract: Aiming to understand the relationship between body mass and abundance, a community of middle-sized and larger mammals was studied in a seasonally dry forest in the far north of the Brazilian Amazonia. Diurnal and nocturnal surveys were carried out by the line-transect method along a 10-km transect. Data were collected on density, biomass, use of forest types, forest strata, diet and feeding strategies by the mammals. Biomass explained animal abundance better than did body mass across the two forest types: Terra Firme forest and mixed forest. There was a statistically significant positive relationship between the biomass of all the 33 mammals studied and group density, as well as between biomass and group size, in both forests. When terrestrial and arboreal mammals, and also different feeding guilds were considered separately, they exhibited very similar results, where biomass alone was positively associated with group density and group size. The slope of the relationships between body mass and group density, body mass and group size, biomass and group density, and biomass and group size varied considerably, with significant scatter around the regression line. Food and food competition shaped the relationship between animal mass and abundance, and this relationship can even vary widely between assemblages. As a result of competition for the available resources, group density increased with increasing biomass.
Type: Journal Article
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Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study.
Notes: 10.1111/j.1469-7998.2006.00214.x
Affiliation: Federal University of Pernambuco
University of Cambridge

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