Long-Term Lemur Research at Centre Valbio, Ranomafana National Park, Madagascar

Wright, Patricia C.; Erhart, Elizabeth M.; Tecot, Stacey R.; Baden, Andrea L.; Arrigo-Nelson, Summer J.; Herrera, James P.; Morelli, Toni Lyn; Blanco, Marina B.; Deppe, Anja M.; Atsalis, Sylvia; Johnson, Steig E.; Ratelolahy, Felix; Tan, Chia L.; Zohdy, Sarah

doi:10.1007/978-3-642-22514-7_4

Cited by 53 publications

(53 citation statements)

References 127 publications

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“…Fecundity rates in this strongly seasonal breeder are markedly lower during El Niño years, which are associated with wetter and warmer conditions at that site (Dunham et al., , ). Ranomafana is located in a rainforest biome that receives 3,000 mm of annual rainfall on average (Wright et al., ), an amount over four times greater than the rainfall received in the dry spiny forest biome of Beza Mahafaly. Thus, while both populations show strongly seasonal breeding that is modulated by climate, they show roughly opposite functional relationships between climate variability and reproduction: wetter and warmer conditions increase female reproductive rates at the drier site but reduce female reproductive rates at the wetter site.…”

Section: Discussionmentioning

confidence: 99%

Does climate variability influence the demography of wild primates? Evidence from long‐term life‐history data in seven species

Campos

Morris

Alberts

et al. 2017

Global Change Biology

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Earth's rapidly changing climate creates a growing need to understand how demographic processes in natural populations are affected by climate variability, particularly among organisms threatened by extinction. Long-term, large-scale, and cross-taxon studies of vital rate variation in relation to climate variability can be particularly valuable because they can reveal environmental drivers that affect multiple species over extensive regions. Few such data exist for animals with slow life histories, particularly in the tropics, where climate variation over large-scale space is asynchronous. As our closest relatives, nonhuman primates are especially valuable as a resource to understand the roles of climate variability and climate change in human evolutionary history. Here, we provide the first comprehensive investigation of vital rate variation in relation to climate variability among wild primates. We ask whether primates are sensitive to global changes that are universal (e.g., higher temperature, large-scale climate oscillations) or whether they are more sensitive to global change effects that are local (e.g., more rain in some places), which would complicate predictions of how primates in general will respond to climate change. To address these questions, we use a database of long-term life-history data for natural populations of seven primate species that have been studied for 29-52 years to investigate associations between vital rate variation, local climate variability, and global climate oscillations. Associations between vital rates and climate variability varied among species and depended on the time windows considered, highlighting the importance of temporal scale in detection of such effects. We found strong climate signals in the fertility rates of three species. However, survival, which has a greater impact on population growth, was little affected by climate variability. Thus, we found evidence for demographic buffering of life histories, but also evidence of mechanisms by which climate change could affect the fates of wild primates.

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Section: Discussionmentioning

confidence: 99%

Does climate variability influence the demography of wild primates? Evidence from long‐term life‐history data in seven species

Campos

Morris

Alberts

et al. 2017

Global Change Biology

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“…)/km² (north-east near Ambodisatrana) and 0.29 indiv./km² (central-east near Camp Indri), though higher in the western extension at 2.59 indiv./km² (south-west near Ampoanaomby). These density estimates are considerably lower than most other eastern sifakas such as P. edwardsi (~4.73 indiv./km²; Wright et al, 2012) The remaining Propithecus candidus population is declining due to hunting; there is no taboo or fady protecting them (Patel et al 2005, Jenkins et al 2011, Golden and Comaroff 2015, Loudon et al 2016; habitat disturbance from slash-and-burn agriculture and selective logging for rosewood, ebony, and other hardwoods (Patel 2007), as well as artisanal mining. Although, they have long been known to inhabit Marojejy NP, Anjanaharibe-Sud SR, as well as the Makira Natural Park; until recently there has been little information on their occurrence in COMATSA (Corridor Marojejy -Anjanaharibe-Sud-Tsaratanana).…”

Section: Abundancementioning

confidence: 99%

Synthesis of the silky sifaka’s distribution (<i>Propithecus candidus</i>)

Patel¹

2016

MCD

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“…It is a successional-climax species that produces large, brown-colored fleshy fruits (length, 20 mm; diameter, 19 mm) with one large, ovoid seed (length, 18 mm; diameter, 17 mm) and sets fruit annually from March to October (O. H. Razafindratsima and A. E. Dunham, unpublished data). In RNP, Cryptocarya seeds are commonly dispersed through defecation by three frugivorous lemur species (Razafindratsima et al 2014), which are also the largest-bodied frugivores in the system (2.0-3.4 kg; Razafindratsima et al 2013 (Wright et al 2012). They are arboreal and disperse seeds while travelling, resting, or feeding in the canopy; however, they differ in their patterns of foraging and movement through their habitats (Razafindratsima et al 2014).…”

Section: Study Site and Systemmentioning

confidence: 99%

Assessing the impacts of nonrandom seed dispersal by multiple frugivore partners on plant recruitment

Razafindratsima

Dunham

2015

Ecology

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Abstract. Directed dispersal is defined as enhanced dispersal of seeds into suitable microhabitats, resulting in higher recruitment than if seeds were dispersed randomly. While this constitutes one of the main explanations for the adaptive value of frugivore-mediated seed dispersal, the generality of this advantage has received little study, particularly when multiple dispersers are involved. We used probability recruitment models of a long-lived rainforest tree in Madagascar to compare recruitment success under dispersal by multiple frugivores, no dispersal, and random dispersal. Models were parameterized using a three-year recruitment experiment and observational data of dispersal events by three frugivorous lemur species that commonly disperse its seeds. Frugivore-mediated seed dispersal was nonrandom with respect to canopy cover and increased modeled per-seed sapling recruitment fourfold compared to no dispersal. Seeds dispersed by one frugivore, Eulemur rubriventer, had higher modeled recruitment probability than seeds dispersed randomly. However, as a group, our models suggest that seeds dispersed by lemurs would have lower recruitment than if dispersal were random. Results demonstrate the importance of evaluating the contribution of multiple frugivores to plant recruitment for understanding plant population dynamics and the ecological and evolutionary significance of seed dispersal.

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Long-Term Lemur Research at Centre Valbio, Ranomafana National Park, Madagascar

Cited by 53 publications

References 127 publications

Does climate variability influence the demography of wild primates? Evidence from long‐term life‐history data in seven species

Does climate variability influence the demography of wild primates? Evidence from long‐term life‐history data in seven species

Synthesis of the silky sifaka’s distribution (<i>Propithecus candidus</i>)

Assessing the impacts of nonrandom seed dispersal by multiple frugivore partners on plant recruitment

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