Conservation communautaire de la forêt humide de basse altitude d'Andriantantely, Madagascar

Ravaloharimanitra, Maholy; Randriahaingo, Hery N. T.; Ranaivosoa, Lova Harilala; Chamberlan, Christelle; King, Tony

doi:10.4314/mcd.v10i1.s5

Cited by 3 publications

(4 citation statements)

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“…Over the past ten years, the number of known populations of Prolemur simus has increased as a result of discovering them in unexpected locations, often scattered in non-protected areas. These areas have been the focus of intensive communitybased conservation efforts Rakotonirina et al, 2013;Rakotonirina and Chamberlan, 2014;Randriahaingo et al, 2014;Ravaloharimanitra et al, 2013aRavaloharimanitra et al, , 2013bRavaloharimanitra et al, , 2017. The population of greater bamboo lemurs monitored by Helpsimus in the area of this project is likewise increasing (Helpsimus., unpublished data) as well as the cultivated area in the region.…”

Section: Discussionmentioning

confidence: 99%

Coping with habitat disturbance: camera-traps reveal cathemerality of Prolemur simus in the community-managed area of Tsaratanana, eastern Madagascar

Nazim

Reuillon²,

Randrianarijaona³

et al. 2022

Folia Primatol.

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This study provides new findings on the flexible activity of Prolemur simus in an anthropogenically modified habitat in the rural commune of Tsaratanana, eastern Madagascar. Based on camera-trap data, we compared the temporal distribution of activity of one group of lemurs between the forest edge and the forest core. We also investigated the possible influence of nocturnal luminosity on the activity cycle. The analysis was conducted using Kernel Density estimates and the R package OVERLAP. The distribution across the 24-h cycle confirmed that Prolemur simus is cathemeral in the wild. The lemurs displayed three peaks of activity: one during the night and two coinciding with morning and evening twilights. The highest proportions of nocturnal activity occurred at the forest edge and at low moon luminosity suggesting a possible anti-predator and/or human-avoidance strategy. The flexible activity of Prolemur simus may contribute to the tolerance of this Critically Endangered species to anthropogenic disturbance.

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Section: Discussionmentioning

confidence: 99%

Coping with habitat disturbance: camera-traps reveal cathemerality of Prolemur simus in the community-managed area of Tsaratanana, eastern Madagascar

Nazim

Reuillon²,

Randrianarijaona³

et al. 2022

Folia Primatol.

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“…Ambalafary (S18.8008° E48.8092°) is located in the Rural Commune of Fanasana Gare, on the north bank of the Ivohitra River, west of the Mangabe fokontany (Mihaminekena et al, 2012; Ravaloharimanitra et al, 2013). Covering 130 ha from 60 to 125 m elevation, Ambalafary is comprised of zones rich in bamboos, including dense clumps of both green and yellow varieties of Bambusa vulgaris along the river edge, stands of Valiha diffusa , and areas of Phyllostachys sp.…”

Section: Methodsmentioning

confidence: 99%

“…Since Tan's (1999) initial study, reports of P. simus at other locations have increased the known dietary repertoire of greater bamboo lemurs to include between 33 and 41 species (numerous taxa identified only to genus) from 18 families (Table ; Andrianandrasana et al, 2013; Eppley et al, 2017; Eronen et al, 2017; Glander et al, 1989; Lantovololona et al, 2012; McGuire et al, 2009; Meier & Rumpler, 1987; Mihaminekena et al, 2012; Rakotoarinivo et al, 2017; Randriahaingo et al, 2014; Randrianarimanana et al, 2012, 2014; Ravaloharimanitra et al, 2011, 2013; Tan, 1999, 2007; Yamashita et al, 2009; Wright et al, 1987). This expansion of consumed dietary resources suggests that P. simus could, instead, be considered a facultative specialist.…”

Section: Introductionmentioning

confidence: 99%

Dietary flexibility of the greater bamboo lemur (Prolemur simus), a specialized feeder, in eastern Madagascar

Mihaminekena,

Rakotonanahary,

Frasier

et al. 2024

American J Primatol

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The degree of dietary flexibility in primates is species specific; some incorporate a wider array of resources than others. Extreme interannual weather variability in Madagascar results in seasonal resource scarcity which has been linked to specialized behaviors in lemurs. Prolemur simus, for example, has been considered an obligate specialist on large culm bamboo with >60% of its diet composed of woody bamboos requiring morphological and physiological adaptations to process. Recent studies reported an ever‐expanding list of dietary items, suggesting that this species may not be an obligate specialist. However, long‐term quantitative feeding data are unavailable across this species’ range. To explore the dietary flexibility of P. simus, we collected data at two northern sites, Ambalafary and Sahavola, and one southern site, Vatovavy, from September 2010 to January 2016 and May 2017 to September 2018, respectively. In total, we recorded 4022 h of behavioral data using instantaneous sampling of adult males and females from one group in Ambalafary, and two groups each in Sahavola and Vatovavy. We recorded 45 plant species eaten by P. simus over 7 years. We also observed significant differences in seasonal dietary composition between study sites. In Ambalafary, bamboo was the most frequently observed resource consumed (92.2%); however, non‐bamboo resources comprised nearly one‐third of the diet of P. simus in Sahavola and over 60% in Vatovavy. Consumption of all bamboo resources increased during the dry season at Ambalafary and during the wet season at Vatovavy, but never exceeded non‐bamboo feeding at the latter. Culm pith feeding was only observed at Ambalafary, where it was more common during the dry season. We identify P. simus as a bamboo facultative specialist capable of adjusting its feeding behavior to its environment, indicating greater dietary flexibility than previously documented, which may enable the species to survive in increasingly degraded habitats.

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“…Dans l'immédiat, il faut une sensibilisation des populations riveraines sur les conséquences des facteurs de pression sur la conservation de la forêt sacrée et sur la nécessité de la sauvegarder. Notons que, ces sensibilisations ont fait leurs preuves dans le cadre de la conservation et la restauration des forêts sacrées au Bénin (Juhé-Beaulaton, 2006 ;Kokou et Sokpon, 2006 ;DGFRN, 2012), au Madagascar (Harpet et al, 2008et Ravaloharimanitra et al, 2015, au Caméroun (Nkongmeneck et al, 2010).…”

Section: Facteurs De Pression Et Stratégies De Conservation De La For...unclassified

Evaluation de l’état actuel et les principales menaces de la Forêt sacrée Badja au sud-ouest du Bénin : Proposition des stratégies de conservation

AKAKPO

Padonou

Assogbadjo

et al. 2019

Ann. UP, Série Sci. Nat. Agron.

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Au Bénin, les statistiques tendancielles de l’état de dégradation des forêts sacrées sont de plus en plus inquiétantes pour la conservation de ces îlots dans une majorité des cas. L’objectif de cette étude est d’évaluer l’état actuel de la forêt sacrée "Badja" et de caractériser les facteurs d’une pression éventuelle afin d’orienter les stratégies pour sa conservation. Un inventaire floristique et dendrométrique dans 30 placettes circulaires de 18 m de rayon aléatoirement distribuées dans la forêt avec un taux de sondage de 23 % environ a été réalisé. Par ailleurs, des enquêtes socio-économiques sur des facteurs de pression éventuelle exercée sur cet écosystème avec 442 enquêtés a été également effectuée. La richesse spécifique, les paramètres de diversités et dendrométriques ont été évalués pour caractériser l’état de conservation de la forêt sacrée. Une analyse factorielle de correspondance et l’histogramme de fréquences des perceptions sur des facteurs de menaces ont été également effectués afin d’élucider les principaux facteurs de pression sur la forêt sacrée. Il ressort de cette étude que la forêt sacrée est caractérisée par une richesse floristique (45 espèces), une richesse des ligneux dbh ≤ 10 cm (24 espèces) et de structures dendrométriques (Densité moyenne: 200 tiges/ha, Diamètre moyen: 23,85 cm, Surface terrière : 7,69 m2/ha et régénération naturelle 5≤dbh<10 cm : 171 pieds/ha). De même les ligneux de forts indices de valeurs d’importance (Triplochiton scleroxylon, Terminalia superba et Sterculia tragacantha) sont devenues très rares dans la forêt. Les principaux facteurs de cette régression sont l’agriculture, les coupes anarchiques et les feux de brousse. Pour une conservation effective de cette forêt sacrée, il faut attribuer un statut foncier à la forêt sacrée tout en récupérant ses limites originelles. Il faut aussi une sensibilisation de la population, l’élaboration, l’expérimentation et le suivi d’un plan de gestion de la forêt sacrée.

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Conservation communautaire de la forêt humide de basse altitude d'Andriantantely, Madagascar

Cited by 3 publications

References 1 publication

Coping with habitat disturbance: camera-traps reveal cathemerality of Prolemur simus in the community-managed area of Tsaratanana, eastern Madagascar

Coping with habitat disturbance: camera-traps reveal cathemerality of Prolemur simus in the community-managed area of Tsaratanana, eastern Madagascar

Dietary flexibility of the greater bamboo lemur (Prolemur simus), a specialized feeder, in eastern Madagascar

Evaluation de l’état actuel et les principales menaces de la Forêt sacrée Badja au sud-ouest du Bénin : Proposition des stratégies de conservation

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