Factors associated with rodent eradication failure

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dc.contributor.author Holmes, ND en
dc.contributor.author Griffiths, R en
dc.contributor.author Pott, M en
dc.contributor.author Alifano, A en
dc.contributor.author Will, D en
dc.contributor.author Wegmann, AS en
dc.contributor.author Russell, James en
dc.date.accessioned 2017-04-11T02:29:51Z en
dc.date.available 2014-12-18 en
dc.date.issued 2015-05 en
dc.identifier.citation Biological Conservation, May 2015, 185, 8 - 16 en
dc.identifier.issn 0006-3207 en
dc.identifier.uri http://hdl.handle.net/2292/32559 en
dc.description.abstract Invasive rodents have an overwhelmingly detrimental impact to native flora and fauna on islands. Rodent eradications from islands have led to valuable biodiversity conservation outcomes. Tropical islands present an additional suite of challenges for rat eradications due to unique characteristics associated with these environments. To date tropical island rat eradications have failed at a higher rate than those undertaken outside the tropics. Critical knowledge gaps exist in our understanding of what drives this outcome. We collated an in-depth dataset of 216 rodenticide based rat eradication operations (33% of all known rodent eradications) in order to determine correlates of eradication failure, including both project implementation factors and target island ecology, geography and climate. We assessed both failed and successful projects, and projects inside and outside the tropics, using random forests, a statistical approach which compensates for high dimensionality within, and correlation among, predictor variables. When assessing all projects, increasing mean annual temperature, particularly above 24 °C, underscored the higher failure rate and greater difficulty of rodent eradications on islands in lower latitudes. We also found clear trends in eradication failure for factors unique to the tropics, including the presence of land crabs – burrowing and hermit crabs, and coconut palms (Cocos nucifera). The presence of agriculture was also associated with failure. Aerial operations had a higher success rate than ground-based methods but success with this technique was less likely in the presence of hermit crabs and other non-target bait consumers. Factors associated with failure in ground-based eradication methods suggested limitations to project scaling such as island area and number of staff. Bait station operations were less likely to succeed when using stopping rules based on measures of rodent abundance. Factors influencing rat eradication failure in tropical environments continue to require a deeper understanding of tropical island dynamics to achieve a higher rate of eradication success. en
dc.description.uri http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000353089800002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e41486220adb198d0efde5a3b153e7d en
dc.language English en
dc.publisher Elsevier en
dc.relation.ispartofseries Biological Conservation en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.sherpa.ac.uk/romeo/issn/0006-3207/ https://www.elsevier.com/about/our-business/policies/sharing en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Factors associated with rodent eradication failure en
dc.type Journal Article en
dc.identifier.doi 10.1016/j.biocon.2014.12.018 en
pubs.begin-page 8 en
pubs.volume 185 en
dc.description.version VoR - Version of Record en
pubs.author-url http://www.sciencedirect.com/science/article/pii/S0006320714004972 en
pubs.end-page 16 en
pubs.publication-status Published en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 475762 en
pubs.org-id Science en
pubs.org-id Biological Sciences en
dc.identifier.eissn 1873-2917 en
pubs.record-created-at-source-date 2017-04-11 en
pubs.online-publication-date 2015-01-27 en

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