The community structure of testate amoebae inhabiting different microhabitats (soil and tree-moss) within a tropical forest biome in Nameri National Park, northeastern India, was investigated. A total of 33 testate amoebae species belonging to 13 genera were identified. Species belonging to the class Lobosea constituted 73% of total testate amoebae density in the soil habitat, whereas the class Filosea constituted the most dominant forms (58%) in the moist tree-moss habitat. The relative abundance of species was higher in the tree-moss habitat compared to the soil habitats of the forest. Although multivariate analysis suggested a significant difference in assemblage patterns between the habitats, the turnover in species (i.e., beta diversity) was insignificant. Species accumulation curves (SAC) constructed using both parametric and non-parametric species richness estimators revealed that the asymptote of species richness was achieved by a low number of sample replicates in both habitats. The temperature and pH of the substratum on testate amoebae distribution patterns suggest the importance of additional background factors on testate amoebae community structure. Further studies involving more biotopes, seasons, and trophic interactions are recommended to document a complete record of testate amoebae diversity and their interactions with environmental gradients in the tropical forest biomes of northeastern India.

调查了印度东北Namename国家公园热带森林生物群落中居住在不同微生境（土壤和树木苔藓）中的睾丸变形虫的群落结构。总共鉴定出13个属的33种睾丸变形虫。在土壤生境中，属于Lobosea类的物种占总睾丸变形虫密度的73％，而Filosea类则是在潮湿的树苔生境中占主导地位的物种（58％）。与森林的土壤生境相比，树苔生境中物种的相对丰富度更高。尽管多变量分析表明生境之间的组装模式存在显着差异，但物种周转率（即β多样性）微不足道。使用参数和非参数物种丰富度估算器构建的物种积累曲线（SAC）表明，通过在两个生境中进行少量的样本复制，可以实现物种丰富度的渐近线。睾丸变形虫分布模式下基质的温度和pH值表明，其他背景因素对睾丸变形虫群落结构的重要性。建议进行更多涉及更多生物群落，季节和营养相互作用的研究，以记录印度东北部热带森林生物群落中睾丸变形虫多样性及其与环境梯度相互作用的完整记录。睾丸变形虫分布模式下基质的温度和pH值表明，其他背景因素对睾丸变形虫群落结构的重要性。建议进行更多涉及更多生物群落，季节和营养相互作用的研究，以记录印度东北部热带森林生物群落中睾丸变形虫多样性及其与环境梯度相互作用的完整记录。睾丸变形虫分布模式下基质的温度和pH值表明，其他背景因素对睾丸变形虫群落结构的重要性。建议进行更多涉及更多生物群落，季节和营养相互作用的研究，以记录印度东北部热带森林生物群落中睾丸变形虫多样性及其与环境梯度的相互作用的完整记录。