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Vegetation cover and occurrence of salamanders in the western Mediterranean

Integrative Zoology 2022年第3期17卷 456-467页

作者： daniel escoriza Axel HERNANDEZ GRECO Institute of Aquatic EcologyUniversity of GironaGironaSpain Department of Environmental Sciences Faculty of Sciences and TechnicsUniversity Pasquale Paoli of CorsicaCorteFrance

The Mediterranean region possesses a rich diversity of salamanders,which also exhibit a high degree of ecological *** is assumed that the presence of salamanders is dependent on the level of vegetation cover in terrestrial habitats,but the strength of this association is likely to vary among *** this study,we investigated the patterns of habitat utilization for Mediterranean salamanders based on 589 records of 33 *** tested the hypothesis that the association between salamander presence and vegetation density varies among genera or reproductive modes(*** vs aquatic).The results show that vegetation cover has similar influences on terrestrial and aquatic groups but important differences are identified for lotic and lentic aquatic *** findings also indicate that the aquatic lotic,terrestrial,and small-body species deviate significantly from that expected from the background range of variation.

关键词： amphibian conservation habitat remote sensing salamander

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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 ***,we assessed whether the insular endemic Salamandra corsica also uses this type of habitat,which could have important implications for its *** 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 *** 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 ***,which reduce temperature ***,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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Using hierarchical spatial models to assess the occurrence of an island endemism: the case of Salamandra corsica

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Ecological Processes 2019年第1期8卷 199-209页

作者： daniel escoriza Axel Hernandez GRECO Institute of Aquatic EcologyUniversity of Girona17071 GironaSpain Department of Environmental Sciences University Pasquale Paoli20250 CorteFrance.

Background:Island species are vulnerable to rapid extinction,so it is important to develop accurate methods to determine their occurrence and habitat *** this study,we assessed two methods for modeling the occurrence of the Corsican endemic Salamandra corsica,based on macro-ecological and fine habitat *** expected that models based on habitat descriptors would better estimate *** occurrence,because its distribution could be influenced by micro-environmental *** occurrence of *** was modeled according to two ensembles of variables using random ***:Salamandra corsica was mainly found in forested habitats,with a complex vertical *** habitats are associated with more stable environmental *** model based on fine habitat descriptors was better able to predict occurrence,and gave no false *** model based on macro-ecological variables underestimated the occurrence of the species on its ecological boundary,which is important as such locations may facilitate interpopulation ***:Implementing fine spatial resolution models requires greater investment of resources,but this is advisable for study of microendemic species,where it is important to reduce type II error(false negatives).

关键词： Amphibian Corsica Mediterranean islands Microhabitat Salamander

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