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Reintroduction or natural colonization? Using cost‐distance analysis to inform decisions about Rodrigues Island Fody and Warbler reintroductions

Davies, OAM; Huggins, AE; Begue, JA; Groombridge, JJ; Jones, C; Norfolk, D; Steward, P; ... Ewen, JG; + view all (2018) Reintroduction or natural colonization? Using cost‐distance analysis to inform decisions about Rodrigues Island Fody and Warbler reintroductions. Animal Conservation , 21 (2) pp. 110-119. 10.1111/acv.12378. Green open access

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Abstract

When making decisions about reintroducing a species, practitioners need to consider whether the release site contains habitat suitable for those species, whether past extinction drivers have been remedied and whether reintroduction is the best option for the species to recolonize the release site. These concerns are captured within two paradigms; the habitat and metapopulation paradigms. We use cost‐distance analysis to assess the need for reintroduction of two bird species, Rodrigues Fody and Rodrigues Warbler, to Anse Quitor reserve on Rodrigues Island, testing hypotheses based on these underlying paradigms. Given a lack of detailed field studies of dispersal across the landscape on either species we rely on expert judgment. Our results show that experts believe Rodrigues Fody will naturally colonize Anse Quitor but that Rodrigues Warbler may not, at least within a time frame of 10 years. This information and treatment of expert judgment allows greater justification in reintroduction planning. Our method shows one way to assist in reintroduction decision making in poorly studied systems.

Type: Article
Title: Reintroduction or natural colonization? Using cost‐distance analysis to inform decisions about Rodrigues Island Fody and Warbler reintroductions
Open access status: An open access version is available from UCL Discovery
DOI: 10.1111/acv.12378
Publisher version: https://doi.org/10.1111/acv.12378
Language: English
Additional information: This version is the author accepted manuscript/version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Translocation, Reintroduction, Cost-distance analysis, Expert judgement, Foudia falvicans, Acrocephalus rodericanus
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Genetics, Evolution and Environment
URI: https://discovery.ucl.ac.uk/id/eprint/10024898
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