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  Introduced European rabbits (Oryctolagus cuniculus) and domestic cats (Felis catus) on Robben Island: Population trends and management recommendations

De Villiers, M. S., Mecenero, S., Sherley, R. B., Heinze, E., Kieser, J., Leshoro, T. M., et al. (2010). Introduced European rabbits (Oryctolagus cuniculus) and domestic cats (Felis catus) on Robben Island: Population trends and management recommendations. South African Journal of Wildlife Research, 40(2), 139-148.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-D990-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-9ECE-A
Genre: Journal Article

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BGC1508.pdf (Publisher version), 112KB
 
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 Creators:
De Villiers, M. S., Author
Mecenero, S., Author
Sherley, R. B., Author
Heinze, E., Author
Kieser, J., Author
Leshoro, T. M., Author
Merbold, L.1, Author              
Nordt, A., Author
Parsons, N. J., Author
Peter, H. U., Author
Affiliations:
1Department Biogeochemical Processes, Prof. S. E. Trumbore, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497752              

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Free keywords: cat island management Oryctolagus rabbit Robben Island hemorrhagic-disease virus invasive species removal kerguelen archipelago south-africa seabirds reproduction conservation eradication vegetation predators
 Abstract: The management objectives of Robben Island, a World Heritage Site, include the maintenance of the island's ecosystem. Yet little is known about the size and impacts of the island's population of introduced European rabbits (Oryctolagus cuniculus). We present the first quantitative assessment of the Robben Island rabbit population. Population estimates should be treated cautiously because of methodological biases, but were useful for identifying trends. Rabbit numbers fluctuated seasonally but were relatively stable between October 2003 and November 2005. Following a programme in 2006 to eradicate feral domestic cats (Fells catus), there was an apparent increase in the rabbit population and the highest estimate of rabbits was made in November 2008. By February 2009, rabbit numbers had decreased considerably and this was probably due to reduced food availability following the 2008 population explosion. Nevertheless, during 2009 rabbit numbers remained higher than they had ever been before November 2008. Rabbits usually preferred open-range habitat, but switched to transitional habitat when numbers were high. Single-species eradication programmes could have devastating impacts on the island's ecosystem. It is thus recommended that a thorough risk assessment be carried out and a holistic management strategy, rather than a single-species approach, be formulated.

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Language(s): eng - English
 Dates: 2010
 Publication Status: Published in print
 Pages: -
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 Identifiers: ISI: ://000291012100005
Other: BGC1508
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Title: South African Journal of Wildlife Research
Source Genre: Journal
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Pages: - Volume / Issue: 40 (2) Sequence Number: - Start / End Page: 139 - 148 Identifier: ISSN: 0379-4369