Zoological Survey of India, Kolkata, West Bengal, India.
Marine Biological Laboratory, Department of Zoology, Andhra University, Visakhapatnam, Andhra Pradesh, 530 003, India; Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, Salmiya, 22017, Kuwait.
Eur J Protistol. 2019 Jun;69:88-101. doi: 10.1016/j.ejop.2019.03.002. Epub 2019 Mar 28.
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.
研究了印度东北部纳梅里国家公园热带森林生物群落中不同小生境（土壤和苔藓）中居住的有壳变形虫的群落结构。共鉴定出 33 种有壳变形虫，属于 13 属。在土壤生境中，属于类 Lobosea 的物种构成了总有壳变形虫密度的 73%，而在潮湿的苔藓生境中，类 Filosea 构成了最主要的形态（58%）。与森林土壤栖息地相比，苔藓栖息地的物种丰富度更高。尽管多元分析表明栖息地之间的组合模式存在显著差异，但物种的周转率（即β多样性）并不显著。使用参数和非参数物种丰富度估计器构建的物种积累曲线（SAC）表明，在两种生境中，通过少量样本重复就可以达到物种丰富度的渐近线。基质的温度和 pH 值对有壳变形虫的分布模式表明，其他背景因素对有壳变形虫群落结构的重要性。建议进行更多涉及更多生物生境、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完整的有壳变形虫多样性及其与环境梯度的相互作用。
