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Sites prioritaires pour la conservation des oiseaux marins et des tortues marines des atolls Chesterfield-Bampton et Bellona

Abstract : The Chesterfield-Bampton and Bellona atolls, hitherto preserved by their remoteness from human activities, are among the last refuges of tropical marine biodiversity. The conservation significance of the islets and sandy cays of these atolls was here assessed from a compilation of seabird counts produced by various authors over the last three decades. The islets were ranked individually according to population size by species and three biodiversity indices (spe-cies richness, Shannon diversity, population weight by species in relation to the total). A princi-pal component analysis distinguished three homogeneous sets of islets and sandy cays that differed by their total abundance of seabirds, as well as by their biodiversity. The importance of the Chesterfield’s "V" for the reproduction of 12 species of seabirds, as well as for the green turtle, is here confirmed. The ranking obtained here differs significantly from that decreed by the government of New Caledonia, where, in particular, islets Mouillage no. 2, Mouillage no. 3 and Loop were arbitrarily excluded from the list of so-called "integral" reserves. These islets here appeared as a priority for conservation.
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https://hal.ird.fr/ird-02049265
Contributor : Philippe Borsa <>
Submitted on : Sunday, October 11, 2020 - 3:58:50 PM
Last modification on : Tuesday, October 27, 2020 - 3:30:38 AM

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  • HAL Id : ird-02049265, version 5

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Philippe Borsa. Sites prioritaires pour la conservation des oiseaux marins et des tortues marines des atolls Chesterfield-Bampton et Bellona. [Rapport de recherche] PNMC 3, Institut de recherche pour le developpement (IRD). 2019, pp.28. ⟨ird-02049265v5⟩

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