Local and landscape characteristics shape amphibian communities across production landscapes in the Western Ghats

Global tropical forests have been modified and fragmented by commodity agroforests, leading to significant alterations in ecological communities. Nevertheless, these production landscapes offer secondary habitats that support and sustain local biodiversity. In this study, we assess community level and species-specific responses of amphibians to land management in areca, coffee and rubber, three of the largest commodity agroforests in the Western Ghats. A total of 106 agroforests across a 30,000 km2 landscape were surveyed for amphibians using a combination of visual and auditory encounter surveys. We used a Bayesian multi-species occupancy modeling framework to examine patterns of species richness, beta diversity, dominance structure and individual species occupancies. The influence of biogeographic variables such as elevation and latitude as well as microhabitat availability of streams, ponds and unpaved plantation roads were tested on amphibian species occupancy. Coffee agrofo...全球热带森林已遭商品农林复合系统（commodity agroforests）改造并碎片化，致使生态群落发生显著改变。尽管如此，此类生产性景观仍可为当地生物多样性提供并维系次生栖息生境。本研究以西高止山脉（Western Ghats）三大核心商品农林复合系统——槟榔、咖啡与橡胶农林复合系统为研究对象，评估两栖动物群落在土地管理干预下的群落水平响应与物种特异性响应。 研究团队在面积达30000平方千米的研究景观范围内，共布设106处农林复合样地，结合目视偶遇调查法与声学偶遇调查法开展两栖动物普查。本研究采用贝叶斯多物种占用模型（Bayesian multi-species occupancy modeling）框架，分析物种丰富度、β多样性、优势类群结构以及单个物种的占用率。同时检验了海拔、纬度等生物地理变量，以及溪流、池塘、未铺装种植园道路等微生境可利用性对两栖动物物种占用率的影响。 咖啡农林复合系统……