How to prioritize rat management for the benefit of petrels: a case study of the UK, Channel Islands and Isle of Man

Ratcliffe, Norman; Mitchell, Ian; Varnham, Karen; Verboven, Nanette; Higson, Paul

doi:10.1111/j.0019-1019.2009.00949.x

Cited by 11 publications

(24 citation statements)

References 21 publications

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“…de Brooke et al. (2007) and Ratcliffe et al. (2009) described systems for prioritizing island eradications based on the magnitude of benefits to threatened bird species and the estimated financial cost.…”

Section: Priorities For Mammalian Predator Control and Eradicationmentioning

confidence: 99%

Review article: The catastrophic impact of invasive mammalian predators on birds of the UK Overseas Territories: a review and synthesis

Hilton

Cuthbert

2010

Ibis

114

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The UK has sovereignty over 16 Overseas Territories, which hold some of the world’s great seabird colonies and collectively support more endemic and globally threatened bird species than the whole of mainland Europe. Invasive alien mammalian predators have spread throughout most of the Territories, primarily since European expansion in the 16th century. Here we review and synthesize the scale of their impacts, historical and current, actions to reduce and reverse these impacts, and priorities for conservation. Mammalian predators have caused a catastrophic wave of extinctions and reductions in seabird colony size that mark the UKOTs as a major centre of global extinction. Mammal‐induced declines of threatened endemics and seabird colonies continue, with four Critically Endangered endemics on Gough Island (Tristan da Cunha), St Helena and Montserrat directly threatened by invasive alien House Mice Mus musculus, Feral Cats Felis catus and rats Rattus spp. Action to reduce these threats and restore islands has been modest in comparison with other developed countries, although some notable successes have occurred and a large number of ambitious eradication and conservation plans are in preparation. Priority islands for conservation action against mammalian predators include Gough (which according to one published prioritization scheme is the highest‐ranked island in the world for mammal eradication), St Helena and Montserrat, but also on Tristan da Cunha, Pitcairn and the Falkland Islands. Technical, financial and political will is required to push forward and fund the eradication of invasive mammalian predators on these islands, which would significantly reduce extinction risk for a number of globally threatened species.

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Section: Priorities For Mammalian Predator Control and Eradicationmentioning

confidence: 99%

Review article: The catastrophic impact of invasive mammalian predators on birds of the UK Overseas Territories: a review and synthesis

Hilton

Cuthbert

2010

Ibis

114

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“…The traditional view was that long-term control was the only practical solution on very large islands, or islands where re-invasion seems inevitable (Zino et al 2001;Jouventin et al 2004;Ratcliffe et al 2009). However, in New Zealand, recent attention has been directed towards developing mechanisms by which islands can be cleared of alien rodents, and procedures put in place that prevent full recolonisation even though the likelihood of (temporary) reinvasion remains high.…”

Section: Where and When Is Invasive Mammal Eradication A Viable Option?mentioning

confidence: 99%

Eradications of invasive mammals from islands: why, where, how and what next?

Phillips

2010

Emu - Austral Ornithology

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“…; Ratcliffe et al . ; Capizzi, Baccetti & Sposimo ; Harris et al . ), making inherent assumptions about which invasive species has the greatest impact on each island.…”

Section: Introductionmentioning

confidence: 99%

Prioritizing eradication actions on islands: it's not all or nothing

Helmstedt

Shaw

Bode

et al. 2016

Journal of Applied Ecology

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Summary Many highly diverse island ecosystems across the globe are threatened by invasive species. Eradications of invasive mammals from islands are being attempted with increasing frequency, with success aided by geographical isolation and increasing knowledge of eradication techniques. There have been many attempts to prioritize islands for invasive species eradication; however, these coarse methods all assume managers are unrealistically limited to a single action on each island: either eradicate all invasive mammals, or do nothing. We define a prioritization method that broadens the suite of actions considered, more accurately representing the complex decisions facing managers. We allow the opportunity to only eradicate a subset of invasive mammals from each island, intentionally leaving some invasive mammals on islands. We consider elements often omitted in previous prioritization methods, including feasibility, cost and complex ecological responses (i.e. trophic cascades). Using a case study of Australian islands, we show that for a fixed budget, this method can provide a higher conservation benefit across the whole group of islands. Our prioritization method outperforms simpler methods for almost 80% of the budgets considered. On average, by relaxing the restrictive assumption that an eradication attempt must be made for all invasives on an island, ecological benefit can be improved by 27%. Synthesis and applications. Substantially higher ecological benefits for threatened species can be achieved for no extra cost if conservation planners relax the assumption that eradication projects must target all invasives on an island. It is more efficient to prioritize portfolios of eradication actions rather than islands.

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How to prioritize rat management for the benefit of petrels: a case study of the UK, Channel Islands and Isle of Man

Cited by 11 publications

References 21 publications

Review article: The catastrophic impact of invasive mammalian predators on birds of the UK Overseas Territories: a review and synthesis

Review article: The catastrophic impact of invasive mammalian predators on birds of the UK Overseas Territories: a review and synthesis

Eradications of invasive mammals from islands: why, where, how and what next?

Prioritizing eradication actions on islands: it's not all or nothing

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