Search

We conducted the first focused survey of nocturnal lemurs in the Mangabe reserve in order to assess their status within the reserve and provide recommendations for their conservation. We combined distance sampling and camera trapping to determine species occurrences and estimate their relative abundance within the reserve. The fieldwork was done in January to February 2018 in the northern and February to March 2019 in the southern part of the reserve. We surveyed 30 transects of one kilometer and each transect was visited three times. We installed eight camera traps; three in October 2017 and a further five were added in May 2018. Five species, Avahi laniger, Cheirogaleus major, Daubentonia madagascariensis, Microcebus lehilahytsara and Lepilemur mustelinus, were encountered and abundance differed between sites. D. madagascariensis and L. mustelinus are rare and should be prioritized for conservation actions in the future. The other lemur species including M. lehilahytsara, C. major and A. laniger can be used as key attractions for ecotourism within the reserve given their higher density. [ABSTRACT FROM AUTHOR]

The Sambirano region of the northwest Madagascar is known as refuge of the lemur Eulemur macaco. A new protected area named Galoko- Kalobinono has been created yet is relatively under studied; only a reference assessment has been realised. To count the size of the Eulemur macaco population in the site, we used the line-transect distance-sampling method. Our results showed a density of 386 individuals/km2 and an abundance of 45,313 individuals for the whole Galoko-Kalobinono. In order to fill the gap from this study, we recommend investigating other parts of the protected area. We also suggest further studies such the population dynamics of Black lemurs. [ABSTRACT FROM AUTHOR]

This survey tried to understand the microclimate (temperature, humidity, light) response and its relationship with the red-fronted brown lemur density from border toward forest interior. Anosikely and Amporomahery are the study sites located in the National Park of Andringitra. This survey was conducted over six months. An initial three months were spent in 2009 from September until November. The second phase, in 2011, was achieved from March until May. The protocol of research used by Lehman et al. (2006) was adopted and five transects were installed and supervised. Each transect has a length of 1.5 km. In total, 132 microclimate recordings and 132 diurnal censuses of red-fronted brown lemur were recorded. This study was interested in understanding the effect of the forest border and the response of Eulemur rufifrons, by observing the relative density of the population. Furthermore, in this study we present microclimatic (temperature, humidity, light) responses associated with food availability (fruit, flower). [ABSTRACT FROM AUTHOR]

Lepilemur mittermeieri, endemic of the Ampasindava peninsula was only recently described (Rabarivola et al., 2006). Its conservation status and distribution are still not clearly defined and until very recently the species was still classified «Data Deficient» by the IUCN (Schwitzer et al., 2013). Using the "line transect distance sampling" method (Buckland et al., 2004) and Distance software (Thomas et al., 2010) we estimated the density of the population in Ampasindava. This survey work allowed us to construct an inventory of the lemur species present in the Ampasindava area and to estimate a density of 133 individuals per km² for the population of L. mittermeieri. [ABSTRACT FROM AUTHOR]

La région Loky-Manambato dans le Nord de Madagascar, est connue pour abriter le propithèque à couronne dorée (Propithecus tattersalli), un lémurien emblématique et endémique de la région. Néanmoins cette région composée d'une dizaine de fragments forestiers de taille moyenne et encore relativement peu étudiés, abrite aussi le microcèbe roux du nord (Microcebus tavaratra). Malgré la gestion des forêts de cette région par l'ONG Fanamby depuis 2005, aucune étude n'avait encore été menée dans chacun des fragments forestiers de la région pour déterminer la présence et quantifier la taille des populations de microcèbes de chacun d'entre eux. Lors de notre étude nous avons tenté d'estimer les densités et les tailles des populations de M. tavaratra dans neuf des dix principaux fragments forestiers de la région. Dans ce but nous avons utilisé la méthode de «line transect distance-sampling». Nos résultats montrent que les densités de microcèbes sont relativement élevées, et varient de 28 à 325 ind/km² entre fragments forestiers de la région. Des études plus approfondies des données collectées seront nécessaires pour déterminer les variables environnementales responsables des différences de densité observées. [ABSTRACT FROM AUTHOR]