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Estimating population parameters for the Critically Endangered Bermuda skink using robust design capture–mark–recapture modelling

Turner, Helena, Griffiths, Richard A., Outerbridge, Mark E., Garcia, Gerardo (2019) Estimating population parameters for the Critically Endangered Bermuda skink using robust design capture–mark–recapture modelling. Oryx, . ISSN 0030-6053. E-ISSN 1365-3008. (doi:10.1017/S0030605318001485) (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided)

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Abstract

Reliably estimating population parameters for highly secretive or rare animals is challenging. We report on the status of the two largest remaining populations of the Critically Endangered Bermuda skink Plestiodon longirostris, using a robust design capture–mark–recapture analysis. Skinks were tagged with passive integrated transponders on two islands and captured on 15 sampling occasions per year over 3 years. The models provided precise estimates of abundance, capture and survival probabilities and temporary emigration. We estimated skink abundance to be 547 ± SE 63.5 on Southampton Island and 277 ± SE 28.4 on Castle Island. The populations do not appear to be stable and fluctuated at both sites over the 3-year period. Although the populations on these two islands appear viable, the Bermuda skink faces population fluctuations and remains threatened by increasing anthropogenic activities, invasive species and habitat loss. We recommend these two populations for continued monitoring and conservation efforts.

Item Type: Article
DOI/Identification number: 10.1017/S0030605318001485
Subjects: Q Science > QH Natural history > QH75 Conservation (Biology)
Divisions: Faculties > Social Sciences > School of Anthropology and Conservation > DICE (Durrell Institute of Conservation and Ecology)
Depositing User: Richard Griffiths
Date Deposited: 08 Oct 2019 11:53 UTC
Last Modified: 11 Oct 2019 08:37 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/77157 (The current URI for this page, for reference purposes)
Turner, Helena: https://orcid.org/0000-0002-6067-888X
Griffiths, Richard A.: https://orcid.org/0000-0002-5533-1013
Garcia, Gerardo: https://orcid.org/0000-0002-3007-8998
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