High interannual variability of a climate-driven amphibian community in a seasonal rainforest

Autor: Franco Andreone, Ingrid J. Porton, Nicolas Dubos, Georges Rendrirendry, Jean Honoré, Jean Noël, Karen Freeman, Loïs Morel, Angelica Crottini, Gonçalo M. Rosa, Honoré Lava
Přispěvatelé: Centre d'Ecologie et des Sciences de la COnservation (CESCO), Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Museo Regionale di Scienze Naturali di Torino, Géoarchitecture : Territoires, Urbanisation, Biodiversité, Environnement, Université de Rennes (UR)-Université de Brest (UBO), Universidade do Porto = University of Porto, Zoological Society of London - ZSL (UNITED KINGDOM), Centre for Ecology - Evolution and Environmental Changes (cE3c), Universidade de Lisboa = University of Lisbon (ULISBOA), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Brest (UBO), Universidade do Porto, Universidade de Lisboa (ULISBOA), Repositório da Universidade de Lisboa
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Biodiversity and Conservation
Biodiversity and Conservation, 2020, 29 (3), pp.893-912. ⟨10.1007/s10531-019-01916-3⟩
Biodiversity and Conservation, Springer Verlag, 2020, 29 (3), pp.893-912. ⟨10.1007/s10531-019-01916-3⟩
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
ISSN: 0960-3115
1572-9710
DOI: 10.1007/s10531-019-01916-3⟩
Popis: International audience; Seasonality exerts strong pressures on biodiversity patterns. Yet, temporal beta-diversity is poorly studied in tropical systems, and the drivers of variability in amphibian activity and seasonality remain largely unknown. We quantified intra- and interannual variation in temporal beta-diversity relying on a nine-year, year-round survey (51 species, n > 23,000) performed in a protected area (Betampona, Madagascar). We assessed the dependence on climate of beta-diversity and abundance using a distance-based redundancy analysis and generalised linear mixed models, respectively. Despite the majority of species being preferentially active during one specific period, beta-diversity and abundance were more variable between years than within years. Temporal variation in beta-diversity was best explained by temperature (but climate accounted for only 2% of variation). Species abundance was best explained by temperature (for 32% of the tested species), monthly humidity (30%) and monthly rainfall (24%). We found no climatic dependence for 24% of the species. Our results suggest that studies focusing on species phenology can be misleading when based on single-year surveys even in seasonal systems. The high interannual variability in diversity may be due to an adaptive responses to an important regime of stochastic events. Given the direction of the relationships between weather and abundances, we predict that a large proportion of amphibians would suffer from climate change in Madagascar. We emphasise the need to account for multiple temporal scales in studies of tropical species composition and abundance to better understand species phenology and their response to climate change, and make targeted conservation actions more effective.
Databáze: OpenAIRE
Externí odkaz: