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Habitat fragmentation and metapopulation dynamics of the Angolan black and white colobus (Colobus angolensis palliatus) in coastal Kenya.

Anderson, J.; (2005) Habitat fragmentation and metapopulation dynamics of the Angolan black and white colobus (Colobus angolensis palliatus) in coastal Kenya. Doctoral thesis , University of London. Green open access

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Abstract

This study investigates the effects of habitat fragmentation on an Angola black-and-white colobus (Colobus angolensis palliatus) metapopulation in southern Kenya. 124 coastal forest fragments were surveyed in 2001. Fifty-five C. a. palliatus populations were found during this survey, (44% habitat patch occupancy), with an estimated national population estimate of 3,100 - 5,000 individuals. Colobus occurrence and density in this forest network was significantly linked to the spatial characteristics and quality of habitat patches. The heterogeneous landscape between habitat patches (matrix) was also found to be important, providing additional foraging habitat and connectivity between forest patches. The use of a spatially explicit metapopulation model (the incidence function model) provided a conceptual framework in which to explore future scenarios of habitat change. C. a. palliatus metapopulation persistence was found to be dependent upon the five largest forests in the network. Many of the colobus populations inhabiting unprotected forests were found to be on critical limits of population extinction. Population occupancy was also affected by the degradation or enhancement of the surrounding matrix.

Type: Thesis (Doctoral)
Title: Habitat fragmentation and metapopulation dynamics of the Angolan black and white colobus (Colobus angolensis palliatus) in coastal Kenya.
Identifier: PQ ETD:591829
Open access status: An open access version is available from UCL Discovery
Language: English
Additional information: Thesis digitised by ProQuest
UCL classification: UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/1444523
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