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Outcompeted by an invader?Interference and exploitative competition between tropical house gecko(Hemidactylus mabouia)and Barbados leaf-toed gecko(Phyllodactylus pulcher)for diurnal refuges in anthropogenic coastal habitats

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Integrative Zoology 2016年第3期11卷 229-238页

作者： Robert WILLIAMS Angelo P.PERNETTA Julia A.HORROCKS Ecology and Conservation Research Group School of Pharmacy and Biomolecular SciencesUniversity of BrightonBrightonUK Ecology and Conservation Research Group University of BrightonHastingsUK Department of Biological and Chemical Sciences University of the West IndiesBarbadosWest Indies

House geckos in the genus Hemidactylus are highly successful colonizers of regions beyond their native range,with colonization often resulting in displacement of native gecko species through competitive interactions for daytime refuge(crevices)and prey resources.We report on data collected from nighttime surveys undertaken in April-May 2014 on Barbados,West Indies,that focused on the distribution and abundance of the endemic Barbados leaf-toed gecko(Phyllodactylus pulcher)and the introduced tropical house gecko(Hemidactylus mabouia)along unlit coastal walls and among boulders in the grounds of a hotel resort.In contrast to patterns of displacement of native species by H.mabouia seen elsewhere,P.pulcher was more abundant than H.mabouia on coastal walls,whereas the latter was found in greater numbers using boulders at this site.Walls and boulders differed with regard to availability of diurnal refugia suitable for geckos,with the walls having high frequency of small crevices with openingsendemic gecko,a finding that could be exploited for the conservation of this candidate species for Critically Endangered classification.

关键词： Barbados leaf-toed gecko Hemidactylus island endemic Phyllodactylus tropical house gecko

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Buffered microclimate determines the presence of Salamandra corsica

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Journal of Forestry Research 2021年第3期32卷 1089-1093页

作者： Daniel Escoriza Axel Hernandez GRECO Institute of Aquatic EcologyUniversity of Girona17071 GironaSpain Department of Environmental Sciences University Pasquale Paoli20250 CorteFrance

Numerous amphibian species occupy microhabitats with buffered thermal and moisture conditions,typically under forest canopies.Here,we assessed whether the insular endemic Salamandra corsica also uses this type of habitat,which could have important implications for its conservation.We used data loggers to record the air temperature and air humidity at 4 h intervals over a period of 2 years,at 13 stations with a confirmed presence of S.corsica.These data were compared with those recorded at Corsican weather stations and those generated by a climate model(WorldClim 2).The weather station data showed significant deviations from the probe data,by an average of-1.26℃(minimum temperature),+2.61℃(maximum temperature),and-0.04%(relative humidity).Similarly,the WorldClim 2 data showed significant deviations from the probe data,by an average of-2.49°C(minimum temperature)and+1.69℃(maximum temperature).These discrepancies refl ect the use of densely vegetated and topographically complex habitats by S.corsica,which reduce temperature fluctuations.Overall,our results highlight the importance of natural vegetal cover in the conservation of populations of this endemic salamander.

关键词： Fire salamander island endemic Microclimate Probe Threatened species

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