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UK Rodent Eradication Best Practice Toolkit

Available Online

The spread of invasive non-native species presents one of the greatest threats to biodiversity globally: invasive species are the primary driver of biodiversity loss on islands and the second largest everywhere else (CBD ; Millennium Ecosystem Assessment, 2005). Many of the UKs island ecosystems have been damaged by the arrival and establishment of invasive non-native species. Introduced predators have caused particularly catastrophic damage to many species of waders and seabirds, undoubtedly causing numerous extirpations as well as contributing to ongoing declines(Stanbury et al. 2017). Removing invasive vertebrates from islands is an important conservation tool to protect and restore island ecosystems and to prevent further declines and losses of native species. The UK Rodent Eradication Best Practice Toolkit is intended as an advisory resource, providing a systematic approach for planning and implementing rodent eradications and biosecurity in the UK. It provides technical advice on specific methods to be used in the UK, as well as an eradication project management framework which is applicable to projects everywhere. This Best Practice Toolkit has been compiled, and contributed to, by several UK governmental and non-governmental organisations involved in island restoration, these being: Royal Society for the Protection of Birds (RSPB), Animal and Plant Health Agency (APHA), Department for Environment, Food and Rural Affairs (Defra), GB Non-Native Species Secretariat (GB NNSS), Joint Nature Conservation Committee (JNCC), National Trust, National Trust for Scotland, Natural England, Natural Resources Wales (NRW), Scottish Natural Heritage (SNH), Scottish Wildlife Trust (SWT) and the Isles of Scilly Wildlife Trust. The Toolkit has also received input from Wildlife Management International Ltd (WMIL), and draws heavily from the documentation produced by WMIL for various rat eradication projects undertaken in the UK. The use of the UK Rodent Eradication Best Practice Toolkit aims to give UK organisations and practitioners the ability to embark on invasive rodent management projects with greater confidence of achieving the desired island restoration goals. For more information or to provide feedback on this resource, please contact Sophie Thomas Sophie.Thomas@rspb.org.uk .

Killing rats could save coral reefs

Available Online

Gill, Victoria

Short website news article about rat eradication on Chagos Islands in the Indian Ocean and how bird populations increase without rat predation increasing nutrients from bird guano into the coral reefs; cites letter article in Springer Nature - Seabirds enhance coral reef productivity and functioning inthe absence of invasive rats, Nichaolas A.J. Graham, Shaun K. Wilson, Peter Carr, Andrew S. Hoey, Simon Jennings, M. Aaron MacNeil https://doi.org/10.1038/s41586-018-0202-3

Beyond Kapiti - A decade of invasive rodent eradications from New Zealand islands

Available Online

Broome, Keith

New Zealand, an archipelago of more than 2000 islands, has a terrestrial fauna especially depauperate in native land mammals. Kiore (Rattus exulans) was the first of four rodent species introduced by people. A project to eradicate invasive rats from Kapiti Island in 1996, represented a turning point in the technology, complexity and scale at which managers of natural heritage on New Zealand islands could operate. This paper includes case studies of some significant projects targeting rodents, sometimes with other introduced mammals, undertaken in the 12 years following Kapiti. Details of the methods, costs, results and outcomes are provided for Kapiti, Whenua Hou, Tuhua, Campbell, Raoul, Hauturu, Taukihepa, and Pomona islands, collectively representing a total of over 23,000 ha of habitat cleared of introduced mammals. Research and trials undertaken in the Kapiti project provided the basis for future environmental risk assessments, allowing other projects to focus on knowledge gaps. New trends in invasive species eradication in New Zealand include more challenging multi-species eradication projects, some of which are undertaken by self- funded community groups. To summarise the lessons of the New Zealand experience: a programmatic approach is recommended which will fit each eradication within a context or framework of goals for those islands; address biosecurity issues at the outset; build capability to attempt the most challenging and rewarding projects; facilitate investment in monitoring and manage expectations of stakeholders to ensure their ongoing support. Success breeds success but is never guaranteed.

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