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Global hotspots of species richness are not congruent with endemism or threat

Global hotspots of species richness are not congruent with endemism or threat
Global hotspots of species richness are not congruent with endemism or threat
Biodiversity hotspots have a prominent role in conservation biology(1-9), but it remains controversial to what extent different types of hotspot are congruent(4,10-14). Previous studies were unable to provide a general answer because they used a single biodiversity index, were geographically restricted, compared areas of unequal size or did not quantitatively compare hotspot types(1-10,12-22). Here we use a new global database on the breeding distribution of all known extant bird species to test for congruence across three types of hotspot. We demonstrate that hotspots of species richness, threat and endemism do not show the same geographical distribution. Only 2.5% of hotspot areas are common to all three aspects of diversity, with over 80% of hotspots being idiosyncratic. More generally, there is a surprisingly low overall congruence of biodiversity indices, with any one index explaining less than 24% of variation in the other indices. These results suggest that, even within a single taxonomic class, different mechanisms are responsible for the origin and maintenance of different aspects of diversity. Consequently, the different types of hotspots also vary greatly in their utility as conservation tools.
0028-0836
1016-1019
Orme, C. David L.
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Davies, Richard G.
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Burgess, Malcolm
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Eigenbrod, Felix
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Pickup, Nicola
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Olson, Valerie A.
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Webster, Andrea J.
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Ding, Tzung-Su
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Rasmussen, Pamela C.
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Ridgely, Robert S.
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Stattersfield, Ali J.
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Bennett, Peter M.
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Blackburn, Tim M.
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Gaston, Kevin J.
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Owens, Ian P.F.
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Orme, C. David L.
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Davies, Richard G.
eaa3e8a2-2534-4e7a-9ce7-a5f23aa1e128
Burgess, Malcolm
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Eigenbrod, Felix
43efc6ae-b129-45a2-8a34-e489b5f05827
Pickup, Nicola
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Olson, Valerie A.
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Webster, Andrea J.
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Ding, Tzung-Su
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Rasmussen, Pamela C.
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Ridgely, Robert S.
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Stattersfield, Ali J.
694e67c9-c070-4413-a2bd-6e184f8f60d6
Bennett, Peter M.
e004c995-296d-4163-9ad1-3496a17f6c98
Blackburn, Tim M.
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Gaston, Kevin J.
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Owens, Ian P.F.
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Orme, C. David L., Davies, Richard G., Burgess, Malcolm, Eigenbrod, Felix, Pickup, Nicola, Olson, Valerie A., Webster, Andrea J., Ding, Tzung-Su, Rasmussen, Pamela C., Ridgely, Robert S., Stattersfield, Ali J., Bennett, Peter M., Blackburn, Tim M., Gaston, Kevin J. and Owens, Ian P.F. (2005) Global hotspots of species richness are not congruent with endemism or threat. Nature, 436 (7053), 1016-1019. (doi:10.1038/nature03850).

Record type: Article

Abstract

Biodiversity hotspots have a prominent role in conservation biology(1-9), but it remains controversial to what extent different types of hotspot are congruent(4,10-14). Previous studies were unable to provide a general answer because they used a single biodiversity index, were geographically restricted, compared areas of unequal size or did not quantitatively compare hotspot types(1-10,12-22). Here we use a new global database on the breeding distribution of all known extant bird species to test for congruence across three types of hotspot. We demonstrate that hotspots of species richness, threat and endemism do not show the same geographical distribution. Only 2.5% of hotspot areas are common to all three aspects of diversity, with over 80% of hotspots being idiosyncratic. More generally, there is a surprisingly low overall congruence of biodiversity indices, with any one index explaining less than 24% of variation in the other indices. These results suggest that, even within a single taxonomic class, different mechanisms are responsible for the origin and maintenance of different aspects of diversity. Consequently, the different types of hotspots also vary greatly in their utility as conservation tools.

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Published date: 18 August 2005

Identifiers

Local EPrints ID: 181383
URI: https://eprints.soton.ac.uk/id/eprint/181383
ISSN: 0028-0836
PURE UUID: f99d61f6-8fab-4981-b68b-25a2b4019ea0
ORCID for Felix Eigenbrod: ORCID iD orcid.org/0000-0001-8982-824X

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Date deposited: 12 May 2011 09:09
Last modified: 15 Aug 2019 00:39

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Contributors

Author: C. David L. Orme
Author: Richard G. Davies
Author: Malcolm Burgess
Author: Felix Eigenbrod ORCID iD
Author: Nicola Pickup
Author: Valerie A. Olson
Author: Andrea J. Webster
Author: Tzung-Su Ding
Author: Pamela C. Rasmussen
Author: Robert S. Ridgely
Author: Ali J. Stattersfield
Author: Peter M. Bennett
Author: Tim M. Blackburn
Author: Kevin J. Gaston
Author: Ian P.F. Owens

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