我国南部沿海岛屿淡水硅藻生物多样性及生物地理学研究

岛屿是全球生物多样性的中心，随着环境变化和人类的活动，岛屿生物多样性面临着严重威胁。岛屿生物多样性研究和保护是生物多样性研究的重要部分。硅藻是淡水生态系统中重要的初级生产者，也是淡水生态系统中生物多样性十分丰富的类群之一。研究岛屿淡水硅藻生物多样性对保护岛屿淡水生态系统有重要意义。我国沿海岛屿众多，但有过淡水硅藻报道的仅有7个，研究范围狭窄，数据匮乏。本研究以我国南部广西、海南、广东、福建、浙江5省的沿海岛屿为研究区域，系统地开展岛屿淡水硅藻生物多样性研究，获取准确的分类学结果，建立详实的种类名录，保存图片资料、分布特征及分子生物学信息，积累我国海岛淡水硅藻研究的分类学及生物地理学资料，为后续相关研究提供重要的基础数据。

Island is the center of global biodiversity, due to the change of climate and people’s activities, the biodiversity of island is threatened. Investigation and protection research of island biodiversity is the important part of the global biodiversity research. Diatom is an important primary producer of the freshwater system, with very high biodiversity. The research of freshwater diatom biodiversity have great meaning for the protection of freshwater system in the islands. There are thousands islands along our coastal line, but only 7 of them have the record of freshwater diatom, both the research area and data are very rare. In this project, samples of freshwater diatom from islands will be collected, which belong to Guangxi province, Hainan province, Guangdong province, Fujian province and Zhejiang province along the coastal line of South China Sea. Detail taxonomical research will be focus on these samples. Our aims are get the accurate taxonomical results and checklist of all the species, save the photos, distribution and molecular data. Taxonomical and biogeography data will be provided by this project to other relevant research.