Spatio-Temporal Change in Crowned (Propithecus coronatus) and Decken's Sifaka (Propithecus deckenii) Habitat in the Mahavavy-Kinkony Wetland Complex, Madagascar / Rado H. Andriamasimanana  

Public ISBD Titre : Spatio-Temporal Change in Crowned (Propithecus coronatus) and Decken's Sifaka (Propithecus deckenii) Habitat in the Mahavavy-Kinkony Wetland Complex, Madagascar Type de document : texte imprimé Auteurs : Rado H. Andriamasimanana, Auteur ; A. Cameron, Auteur Année de publication : 2014 Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : LEMURIENS LEMURIENS:Fragmentation, Habitat Mots-clés : CONSERVATION  DEFORESTATION  FRAGMENTATION  PREDICTION  PROPITHECUS CORONATUS  PROPITHECUS DECKENII  THREATS Résumé : Sifakas (Propithecus) are endemic to Madagascar. Of the nine species currently recognized (Mittermeier et al. 2010), four are classified on the IUCN Red List as Critically Endangered, and five, including the crowned sifaka (P. coronatus) and Decken's sifaka (P. deckenii), as Endangered (Andriaholinirina et al. 2014a, 2014b). Crowned and Decken's sifaka are found in dry deciduous forest in west and central Madagascar. In the north of its range, the crowned sifaka is found between the Mahavavy and Betsiboka rivers, and recent surveys have shown that its full distribution extends southwards through the fragmented forests of the Boeny, Betsiboka, Bongolava and Menabe regions towards the rivers Tsiribihina, Mahajilo, and Mama (King et al. 2012, 2014; Rakotonirina et al. 2014; Salmona et al. 2014). Decken's sifaka is found to the west of the Mahavavy River, its distribution extending south to the Manambolo River (Mittermeier et al. 2010; King et al. 2014). Sifaka color variations occur towards the lower reaches of the Mahavavy and Manombolo rivers, at sites in the Melaky and Menabe Regions, with melanistic forms reported in populations of both crowned and Decken's sifakas (King et al. 2014; Rakotonirina et al. 2014). Similar color variations have also been reported in populations of Decken's sifaka further north, including that of the Mahavavy-Kinkony Wetland Complex (Curtis et al. 1998; Thalmann et al. 2002; Rumpler et al. 2011; Rakotonirina et al. 2014). Three new protected areas in western Madagascar will help conserve the crowned sifaka; the Mahavavy-Kinkony Wetland Complex (MKWC), Bombetoka-Belemboka, and the forest station of Antrema, with the MKWC providing approximately two-thirds of the protected area occupied by this species (Rasoavahiny et al. 2008). Decken's sifaka is also present in the MKWC and several other protected areas, including three national parks (Mittermeier et al. 2010). The MKWC is, therefore, important for the conservation of these two sifaka species. Habitat destruction, degradation and fragmentation are the principle drivers of population declines of both crowned and Decken’s sifakas (Andriaholinirina et al. 2014a, 2014b). Historical changes in forest habitat are due to various factors, among which anthropogenic factors are the primary contributors (ZICOMA 1999; McConnell 2002). This research was undertaken in the MKWC in order to analyze the direction and rate of change of the natural habitat of crowned and Decken's sifakas to inform conservation strategies for their survival within the site. Titre du périodique : Primate Conservation Volume : 28 : 65-71 En ligne : https://doi.org/10.1896/052.028.0102 Spatio-Temporal Change in Crowned (Propithecus coronatus) and Decken's Sifaka (Propithecus deckenii) Habitat in the Mahavavy-Kinkony Wetland Complex, Madagascar [texte imprimé] / Rado H. Andriamasimanana, Auteur ; A. Cameron, Auteur . - 2014. Langues : Anglais (eng) Langues originales : Anglais (eng) Catégories : LEMURIENS LEMURIENS:Fragmentation, Habitat Mots-clés : CONSERVATION  DEFORESTATION  FRAGMENTATION  PREDICTION  PROPITHECUS CORONATUS  PROPITHECUS DECKENII  THREATS Résumé : Sifakas (Propithecus) are endemic to Madagascar. Of the nine species currently recognized (Mittermeier et al. 2010), four are classified on the IUCN Red List as Critically Endangered, and five, including the crowned sifaka (P. coronatus) and Decken's sifaka (P. deckenii), as Endangered (Andriaholinirina et al. 2014a, 2014b). Crowned and Decken's sifaka are found in dry deciduous forest in west and central Madagascar. In the north of its range, the crowned sifaka is found between the Mahavavy and Betsiboka rivers, and recent surveys have shown that its full distribution extends southwards through the fragmented forests of the Boeny, Betsiboka, Bongolava and Menabe regions towards the rivers Tsiribihina, Mahajilo, and Mama (King et al. 2012, 2014; Rakotonirina et al. 2014; Salmona et al. 2014). Decken's sifaka is found to the west of the Mahavavy River, its distribution extending south to the Manambolo River (Mittermeier et al. 2010; King et al. 2014). Sifaka color variations occur towards the lower reaches of the Mahavavy and Manombolo rivers, at sites in the Melaky and Menabe Regions, with melanistic forms reported in populations of both crowned and Decken's sifakas (King et al. 2014; Rakotonirina et al. 2014). Similar color variations have also been reported in populations of Decken's sifaka further north, including that of the Mahavavy-Kinkony Wetland Complex (Curtis et al. 1998; Thalmann et al. 2002; Rumpler et al. 2011; Rakotonirina et al. 2014). Three new protected areas in western Madagascar will help conserve the crowned sifaka; the Mahavavy-Kinkony Wetland Complex (MKWC), Bombetoka-Belemboka, and the forest station of Antrema, with the MKWC providing approximately two-thirds of the protected area occupied by this species (Rasoavahiny et al. 2008). Decken's sifaka is also present in the MKWC and several other protected areas, including three national parks (Mittermeier et al. 2010). The MKWC is, therefore, important for the conservation of these two sifaka species. Habitat destruction, degradation and fragmentation are the principle drivers of population declines of both crowned and Decken’s sifakas (Andriaholinirina et al. 2014a, 2014b). Historical changes in forest habitat are due to various factors, among which anthropogenic factors are the primary contributors (ZICOMA 1999; McConnell 2002). This research was undertaken in the MKWC in order to analyze the direction and rate of change of the natural habitat of crowned and Decken's sifakas to inform conservation strategies for their survival within the site. Titre du périodique : Primate Conservation Volume : 28 : 65-71 En ligne : https://doi.org/10.1896/052.028.0102

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