本项目以典型的片段化栖息地——千岛湖人工陆桥岛屿为研究平台，以蜘蛛、甲虫、鸟类和兽类等类群动物为对象，以动物的重要形态特征——身体大小为指标，研究小时间尺度隔离模型系统陆桥岛屿动物的进化适应，验证各类群动物在陆桥岛屿上的“岛屿规律”，研究动物身体大小进化适应产生的机制及其类群间差异，构建岛屿特征参数对动物身体大小影响模型，研究动物身体大小与物种共存之间的关系，探讨动物身体大小分布格局对群落聚群规律的影响及其与群落稳定性之间的关系，研究岛屿特征与身体大小分布之间的关系，构建岛屿特征参数对动物身体大小分布影响模型，进而探讨人工陆桥岛屿物种适应、物种共存与生物多样性维持机制。本项目研究不仅对于丰富岛屿物种进化理论、岛屿生物地理学理论与生物多样性维持机制理论具有重要科学价值，而且对于提供生物多样性保育策略的制定与实施的科学依据具有十分重要的意义。

The project will focused on the body size of spiders, beetles, birds and mammals and its effect on the community assembly on artificial land-bridge islands with short history of isolation in the Thousand Island Lake, a typical fragmented habitat. We will investigate the shift and variation of body size, test the ‘island rule’ in animals on land-bridge islands, then examine the forces and factors influence evolution of body size of a given species and its underlying mechanisms of evolutionary adaption for multiple groups on land-bridge islands. By revealing these mechanisms, the project will build the model of faunal body size against the island variables, and then test the relationships between body size and species coexistence, thus in turn evaluate the effects of the spatial patterns of body size distribution (BSD) on community assembly, and community stability. By identifying the key factors influencing BSD pattern in a community, we will also test the relationship between BSD and island variables to build the model of the BSD patterns against island variables. Based on the above findings, we will discuss the mechanisms underlying species adaption, coexistence, and biodiversity sustainability on land-bridge islands. The project will contribute not only important scientific developments into the theories of species evolution, island biogeography and biodiversity sustainability, but also conservation strategies on biodiversity management.