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Conservation Status and Abundance of the Crowned Sifaka (Propithecus coronatus)

2014-12Journal article Open access
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dc.contributor.authorSalmona, Jordi
dc.contributor.authorRasolondraibe, Emmanuel
dc.contributor.authorJan, Fabien
dc.contributor.authorBesolo, Aubin
dc.contributor.authorRakotoarisoa, Heriniaina
dc.contributor.authorMeyler, Sam Viana
dc.contributor.authorWohlhauser, Sébastien
dc.contributor.authorRabarivola, Clément
dc.contributor.authorChikhi, Lounès
dc.date.accessioned2016-03-18T12:56:54Z
dc.date.available2016-03-18T12:56:54Z
dc.date.issued2014-12
dc.description.abstractThe crowned sifaka (Propithecus coronatus) is Endangered. It has a large but highly fragmented distribution; its known range extends from the Betsiboka River in the north of Madagascar, to the Mahavavy River in the north-west, and down to the Tsiribihina River in the south-west. The species lives in forest habitats that are highly and increasingly fragmented and are continuously suffering perturbations and destruction. In order to carry out effective conservation measures targeting P. coronatus, its conservation status needs to be updated so that measures can be taken before anthropogenic or natural environmental changes lead to the extirpation of the species in most of its forests. We (i) identified forest fragments where the species is still present and (ii) using the line-transect “Distance” sampling method, estimated the population size and density in the principal remaining forest fragments in the northern part of its range, including both protected and unprotected areas. We visited most of the forests in the northern part of its range in order to update the current area of occupancy, and to rate the state of its forests using a qualitative “forest quality index.” Our survey results have shown that (i) a large number of forests have disappeared or decreased in size in the last 10 years, and (ii) population densities vary considerably among forest fragments (ranging from 49 to 309 individuals per km²), with some very high densities in forests located along the Mahavavy River and in the Antrema area. Their abundance in the area surveyed is likely to be between 4,226 and 36,672 individuals, and most probably above 10,000. It is difficult to extrapolate from these estimates to the total abundance across the species’ entire range, but we estimate that it is likely to be large, probably between 130,000 and 220,000 individuals. Unfortunately, many field observations suggest that its populations continue to decline at a high rate due to habitat loss and hunting, and we argue for the re-evaluation of the conservation status from Endangered A2cd to Endangered A4acd, and the need to survey the rest of the range of P.coronatus.pt_PT
dc.description.sponsorshipFCT grant: (SFRH/BD/64875/2009), Institut Français de la Biodiversité, Programme Biodiversité de l’Océan Indien (ref.CD-AOOI-07-003), the GDRI Madagascar, the "Laboratoire d’Excellence" (LABEX) entitled TULIP: (ANR -10-LABX-41), Instituto Gulbenkian de Ciência, “Optimus Alive!” Biodiversity grant, University of Mahajanga, Département de Biologie Animale et Ecologie, Fanamby NGO.pt_PT
dc.identifier.citationConservation Status and Abundance of the Crowned Sifaka (Propithecus coronatus) Jordi Salmona, Emmanuel Rasolondraibe, Fabien Jan, Aubin Besolo, Heriniaina Rakotoarisoa, Sam Viana Meyler, Sébastien Wohlhauser, Clément Rabarivola, and Lounès Chikhi Primate Conservation 2014 28 (1), 73-83pt_PT
dc.identifier.doi10.1896/052.028.0122pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.7/563
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherConservation Internationalpt_PT
dc.relation.publisherversionhttp://www.bioone.org/doi/full/10.1896/052.028.0122pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPopulation densitypt_PT
dc.subjectDistance samplingpt_PT
dc.subjectPropithecus coronatuspt_PT
dc.subjectconservation statuspt_PT
dc.subjectarea of occupancypt_PT
dc.titleConservation Status and Abundance of the Crowned Sifaka (Propithecus coronatus)pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FBIA-BEC%2F100176%2F2008/PT
oaire.citation.endPage83pt_PT
oaire.citation.startPage73pt_PT
oaire.citation.titlePrimate Conservationpt_PT
oaire.citation.volume28pt_PT
oaire.fundingStream3599-PPCDT
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isProjectOfPublicatione097521b-ad8c-4626-a074-aeb1cb70c4bd
relation.isProjectOfPublication.latestForDiscoverye097521b-ad8c-4626-a074-aeb1cb70c4bd

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