Quantification of habitat fragmentation reveals extinction risk in terrestrial mammals

Crooks, Kevin R., Burdett, Christopher L., Theobald, David M., King, Sarah R. B., Di Marco, Moreno, Rondinini, Carlo and Boitani, Luigi (2017) Quantification of habitat fragmentation reveals extinction risk in terrestrial mammals. Proceedings of the National Academy of Sciences, 114 29: 7635-7640. doi:10.1073/pnas.1705769114

Author Crooks, Kevin R.
Burdett, Christopher L.
Theobald, David M.
King, Sarah R. B.
Di Marco, Moreno
Rondinini, Carlo
Boitani, Luigi
Title Quantification of habitat fragmentation reveals extinction risk in terrestrial mammals
Journal name Proceedings of the National Academy of Sciences   Check publisher's open access policy
ISSN 1091-6490
Publication date 2017-07-18
Sub-type Article (original research)
DOI 10.1073/pnas.1705769114
Open Access Status Not yet assessed
Volume 114
Issue 29
Start page 7635
End page 7640
Total pages 6
Place of publication Washington, DC, United States
Publisher National Academy of Sciences
Language eng
Abstract Although habitat fragmentation is often assumed to be a primary driver of extinction, global patterns of fragmentation and its relationship to extinction risk have not been consistently quantified for any major animal taxon. We developed high-resolution habitat fragmentation models and used phylogenetic comparative methods to quantify the effects of habitat fragmentation on the world's terrestrial mammals, including 4,018 species across 26 taxonomic Orders. Results demonstrate that species with more fragmentation are at greater risk of extinction, even after accounting for the effects of key macroecological predictors, such as body size and geographic range size. Species with higher fragmentation had smaller ranges and a lower proportion of high-suitability habitat within their range, and most high-suitability habitat occurred outside of protected areas, further elevating extinction risk. Our models provide a quantitative evaluation of extinction risk assessments for species, allow for identification of emerging threats in species not classified as threatened, and provide maps of global hotspots of fragmentation for the world's terrestrial mammals. Quantification of habitat fragmentation will help guide threat assessment and strategic priorities for global mammal conservation.
Keyword Conservation
Extinction risk
Habitat fragmentation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Biological Sciences Publications
School of Earth and Environmental Sciences
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