Invasive mammal eradication on islands results in substantial conservation gains

Author:

Jones Holly P.12,Holmes Nick D.3,Butchart Stuart H. M.4,Tershy Bernie R.5,Kappes Peter J.6,Corkery Ilse7,Aguirre-Muñoz Alfonso8,Armstrong Doug P.9,Bonnaud Elsa10,Burbidge Andrew A.11,Campbell Karl312,Courchamp Franck10,Cowan Philip E.13,Cuthbert Richard J.1415,Ebbert Steve16,Genovesi Piero1718,Howald Gregg R.3,Keitt Bradford S.3,Kress Stephen W.19,Miskelly Colin M.20,Oppel Steffen14,Poncet Sally21,Rauzon Mark J.22,Rocamora Gérard2324,Russell James C.2526,Samaniego-Herrera Araceli8,Seddon Philip J.27,Spatz Dena R.35,Towns David R.2829,Croll Donald A.5

Affiliation:

1. Department of Biological Sciences, Northern Illinois University, DeKalb, IL 60115;

2. Institute for the Study of the Environment, Sustainability, and Energy, Northern Illinois University, DeKalb, IL 60115;

3. Island Conservation, Santa Cruz, CA 95060;

4. BirdLife International, Cambridge CB2 3QZ, United Kingdom;

5. Ecology & Evolutionary Biology Department, Institute of Marine Sciences, University of California, Santa Cruz, CA 95060;

6. Oregon Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR 97331;

7. Zoology & Ecology, University College Cork, Corcaigh, Ireland;

8. Grupo de Ecología y Conservación de Islas, A.C., Ensenada, C.P. 22800, Baja California, Mexico;

9. Wildlife Ecology Group, Institute of Natural Resources, Massey University, Palmerston North 4474, New Zealand;

10. Laboratory of Ecology Systematics and Evolution, University Paris-Sud, Orsay 91405, France;

11. Private address, Floreat, WA 6014, Australia;

12. School of Geography, Planning and Environmental Management, The University of Queensland, St Lucia, QLD 4072, Australia;

13. Landcare Research, Lincoln 7608, New Zealand;

14. Centre for Conservation Science, Royal Society for the Protection of Birds, Cambridge CB2 3QZ, United Kingdom;

15. Wildlife Conservation Society, Goroka, Eastern Highlands Province, Papua New Guinea;

16. Alaska National Maritime Wildlife Refuge, US Fish and Wildlife Service, Homer, AK 99603;

17. Institute for Environmental Protection and Research, I-00144 Rome, Italy;

18. Invasive Species Specialist Group, Species Survival Commission, International Union for the Conservation of Nature, I-00144 Rome, Italy;

19. Seabird Restoration Program, National Audubon Society, Ithaca, NY 14850;

20. Te Papa Tongarewa, Wellington 6011, New Zealand;

21. South Georgia Surveys, Beaver Island LandCare, Stanley, FIQQ IZZ, Falkland Islands;

22. Geography Department, Laney College, Oakland, CA 94607;

23. Island Biodiversity and Conservation Center, University of Seychelles, Anse Royale, Seychelles;

24. Island Conservation Society, Pointe Larue, Mahé, Seychelles;

25. School of Biological Sciences, University of Auckland, Auckland 1142, New Zealand;

26. Department of Statistics, University of Auckland, Auckland 1142, New Zealand;

27. Department of Zoology, University of Otago, Dunedin 9016, New Zealand;

28. Science and Capability Group, Department of Conservation, Auckland 1145, New Zealand;

29. Institute for Applied Ecology, Auckland University of Technology, Auckland 1142, New Zealand

Abstract

SignificanceGlobal conservation actions to prevent or slow extinctions and protect biodiversity are costly. However, few conservation actions have been evaluated for their efficacy globally, hampering the prioritization of conservation actions. Islands are key areas for biodiversity conservation because they are home to more than 15% of terrestrial species and more than one-third of critically endangered species; nearly two-thirds of recent extinctions were of island species. This research quantifies the benefits to native island fauna of removing invasive mammals from islands. Our results highlight the importance of this conservation measure for protecting the world's most threatened species.

Publisher

Proceedings of the National Academy of Sciences

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