中国淡水异极藻科（ Gomphonemaceae）植物的分类学研究

项目名称： 中国淡水异极藻科（ Gomphonemaceae）植物的分类学研究

项目编号： No.31270250

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 生物科学

项目作者： 范亚文

作者单位： 哈尔滨师范大学

项目金额： 85万元

中文摘要： 异极藻科（Gomphonemaceae）是硅藻植物中的一个重要类群，在硅藻植物的系统演化中占有重要位置。该科种类繁多，属内种间的变化极为复杂，超微结构特征在光镜下难以分辨，是硅藻植物中系统分类难度较大的类群之一。我国地域辽阔，生态环境复杂，蕴藏了大量的异极藻科植物资源，但对该科的分类学工作多以光镜为主，超微结构研究略显薄弱。本项目将对我国淡水异极藻科植物进行深入系统的分类学研究，在广泛野外调查和采集标本的基础上，利用不同的观察手段，对异极藻科植物进行显微结构特征、超微结构特征以及物种分布特点的研究，提出种类特征的确定化标准，修订和完善分类系统，确定硅藻个体特征和种类的系统演化地位；同时对不同区域异极藻科植物的地理分布特性进行更深入的调查，分析异极藻科植物的生物地理学特点，丰富特殊生境的环境指示种，为我国藻类生物资源的多样性保护和藻类环境学的进一步发展提供重要的科学依据。

中文关键词： 分类学；异极藻科；淡水；中国；

英文摘要： The family Gomphonemaceae is a very important group of diatoms, that played a very important role in the evolution of diatoms. The species in this family are abundant and the varieties among these species are complex. Some fine structures are hard to be seen under the LM, thus, this is one of the groups which are vey difficult to be identified. There is a rich biodiversity of algae in China, with a lot of Gomphonemaceae species. But until now, light microscope has been widely used in the study of this family, therefore, studies of their fine structures are still lagging behind in China. In this study, a deep taxonomical research will be done on this family from freshwater in China. This will be based on the wide fieldworks and sample collections, LM ,SEM and TEM will be used to study the features of species and the distribution pattern of these species. The aim is to find the distinguishing characteristics between species, revise and improve the taxonomical system and make known the role of species in the revolution system. At the same time, the geobiological study will be undertaken, the ecological and geobiological characters of species in this family will be analyzed, those species that act as indicators of some special habitats will be identified. This study will provide basic data for the protection of the

英文关键词： Taxonomy；Gomphonemaceae；Freshwater；China；