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Environmental effects on group structure and vigilance in vervet monkeys

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dc.contributor.advisor Henzi, S. Peter
dc.contributor.advisor Barrett, Louise
dc.contributor.author Pasternak, Graham M
dc.date.accessioned 2012-10-03T19:10:26Z
dc.date.available 2012-10-03T19:10:26Z
dc.date.issued 2011
dc.identifier.uri http://hdl.handle.net/10133/3147
dc.description xiii, 79 leaves : ill., maps ; 29 cm en_US
dc.description.abstract Narrow riparian woodlands along non-perennial streams have made it possible for vervet monkeys to penetrate the semi-arid karoo ecosystem of South Africa, while artificial water points have more recently allowed these populations to colonize much more marginal habitat away from natural water sources. In order to determine the sequelae of life in these narrow, linear woodlands for historically 'natural' populations, I determined the size of troops in relation to their reliance on natural and artificial water sources and collected detailed data from two river-centred troops on activity, diet and ranging behaviour over an annual cycle. These data indicate that river-centred troops were distinctive primarily for their large group sizes and, consequently, their large adult cohorts, and the extent of home range overlap in what is regarded as a territorial species. While large group size carried the corollary of increased day journey length and longer estimated interbirth intervals, there was little other indication of ecological stress. Specifically, the rate of predation appears to be lower than observed at other sites. Predation encounters here, encourage the use of predator vigilance rather than influencing the use of space within the habitat. The high density of Acacia karoo, which accounted for a third of annual foraging effort in what was a relatively depauperate floristic habitat, allows for an adequate energy intake for groups of this size. I ascribed the large group size and home range overlap to the inability of groups to undergo fission. en_US
dc.language.iso en_US en_US
dc.publisher Lethbridge, Alta. : University of Lethbridge, Dept. of Psychology, c2011 en_US
dc.relation.ispartofseries Thesis (University of Lethbridge. Faculty of Arts and Science) en_US
dc.subject Cercopithecus aethiops -- Research -- South Africa -- Samara Game Reserve en_US
dc.subject Cercopithecus aethiops -- South Africa -- Samara Game Reserve -- Geographical distribution en_US
dc.subject Cercopithecus aethiops -- Migration -- South Africa -- Samara Game Reserve en_US
dc.subject Cercopithecus aethiops -- Effect of environment on -- South Africa -- Samara Game Reserve en_US
dc.subject Riparian forests -- South Africa -- Samara Game Reserve en_US
dc.subject Animal societies -- Research en_US
dc.subject Primates -- Research -- South Africa -- Samara Game Reserve en_US
dc.subject Dissertations, Academic en_US
dc.title Environmental effects on group structure and vigilance in vervet monkeys en_US
dc.type Thesis en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Psychology en_US

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