Insular threat associations within taxa worldwide

Abstract : The global loss of biodiversity can be attributed to numerous threats. While pioneer studies have investigated their relative importance, the majority of those studies are restricted to specific geographic regions and/or taxonomic groups and only consider a small subset of threats, generally in isolation despite their frequent interaction. Here, we investigated 11 major threats responsible for species decline on islands worldwide. We applied an innovative method of network analyses to disentangle the associations of multiple threats on vertebrates, invertebrates, and plants in 15 insular regions. Biological invasions, wildlife exploitation, and cultivation, either alone or in association, were found to be the three most important drivers of species extinction and decline on islands. Specifically, wildlife exploitation and cultivation are largely associated with the decline of threatened plants and terrestrial vertebrates, whereas biological invasions mostly threaten invertebrates and freshwater fish. Furthermore, biodiversity in the Indian Ocean and near the Asian coasts is mostly affected by wildlife exploitation and cultivation compared to biological invasions in the Pacific and Atlantic insular regions. We highlighted specific associations of threats at different scales, showing that the analysis of each threat in isolation might be inadequate for developing effective conservation policies and managements.
Document type :
Journal articles
Complete list of metadatas

Cited literature [62 references]  Display  Hide  Download

https://hal.sorbonne-universite.fr/hal-01788888
Contributor : Gestionnaire Hal-Upmc <>
Submitted on : Wednesday, May 9, 2018 - 3:07:33 PM
Last modification on : Wednesday, May 15, 2019 - 3:31:37 AM

File

s41598-018-24733-0.pdf
Publication funded by an institution

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Camille Leclerc, Franck Courchamp, Céline Bellard. Insular threat associations within taxa worldwide. Scientific Reports, Nature Publishing Group, 2018, 8, pp.6393. ⟨10.1038/s41598-018-24733-0⟩. ⟨hal-01788888⟩

Share

Metrics

Record views

107

Files downloads

113