Biogeography and community structure in mussel beds at Pacific hydrothermal vents

太平洋热液喷口贻贝床的生物地理学和群落结构

• 批准号: 0350554
• 负责人: Cindy Van Dover
• 金额: $ 19.34万
• 依托单位: College of William and Mary
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-06-01 至 2007-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0350554&HistoricalAwards=false
• 关键词: Biogeography; community; structure; mussel; beds

Intellectual Merit. Funding is requested to continue community structure andbiogeographic analysis of organisms associated with hydrothermal vents. Workcompleted to date has led to the acquisition of a unique, quantitative assessment ofdiversity and faunal similarities and differences among vent and seep mussel beds fromvent sites along the East Pacific Rise and the Mid-Atlantic Ridge and seep sites in theAtlantic and Gulf of Mexico. These samples provide a rich context within which tointerpret the faunal composition and structure in mussel beds in an area south of theEaster Microplate (38S) and in the Lau and Fiji back-arc basins. Specimens will becollected using our standard gear from two discrete mussel beds at each of the 3 primarysites. Once collected, samples will be processed using the standard protocol establishedin our lab, and identified with the help of the extensive voucher collection maintained atThe College of William & Mary, and with the aid of taxonomic specialists as necessary.A subset of appropriately preserved sorted samples will be made available for molecularanalyses, which will be undertaken in collaboration with R. Vrijenhoek. Molecularanalyses will focus on taxa where there is a need to test for cryptic species or phenotypicplasticity and selected other taxa of interest to Vrijenhoek and Van Dover, in addition tothe suite of taxa that Vrijenhoek is separately funded to analyze (primarily tubeworms,mussels, crabs, clams). The proposed community structure and faunistic analyses willcontribute to our understanding of the degree of evolutionary alliance of vent faunaswithin the Pacific Ocean basin and to potential barriers or conduits to dispersal. Thework is of particular interest because the study sites have been strategically chosen toaddress biogeographic issues relating to the degree of isolation of adjacent back-arc basinsystems, the relationship of these back-arc faunas to the most-southern-known ventfaunas on the mid-ocean ridge (at 38S), and the relationships among these faunas andsites already studied north of the Easter Microplate on the East Pacific Rise.Broader Impact. Numerous undergraduates and graduate students will benefit fromparticipation in field programs and analysis of samples. Aspects of the research areincorporated into the PIs undergraduate and graduate teaching. Results will be publishedin the professional literature and will be made available to the public through web-basedresources and through public lectures by the PI and her students.

智力优势。要求提供资金，继续对与热液喷口有关的生物进行群落结构和地理分析。迄今为止完成的工作导致对东太平洋海隆和中大西洋海岭喷口点和大西洋和墨西哥湾渗漏点的喷口和渗漏贻贝床的多样性和动物区系异同进行了独特的定量评估。这些样品提供了一个丰富的背景下，解释动物区系组成和结构的贻贝床在南部地区的theEaster微板块（38S）和在劳和斐济弧后盆地。将使用我们的标准设备从3个主要地点的两个离散贻贝床中采集标本。一旦收集到样本，将使用我们实验室建立的标准方案进行处理，并在威廉玛丽学院保存的大量凭证收集的帮助下进行鉴定，必要时还需要分类专家的帮助。弗里延胡克分子分析将集中在需要测试隐藏物种或表型可塑性的分类群，以及Vrijenhoek和货车多佛感兴趣的其他分类群，此外还有Vrijenhoek单独资助分析的一套分类群（主要是管虫、贻贝、螃蟹、蛤蜊）。建议的群落结构和动物区系分析将有助于我们了解的程度的进化联盟的喷口faunaswithin太平洋盆地和潜在的障碍或渠道的扩散。这项工作是特别感兴趣的，因为研究地点已被战略性地选择，以解决与邻近弧后盆地系统的隔离程度有关的地理问题，这些弧后动物群与大洋中脊（38S）上最南部已知的ventfaunas的关系，以及这些动物群和已经研究过的东太平洋隆起复活节微板块以北的地点之间的关系。许多本科生和研究生将受益于参与实地项目和样本分析。研究的各个方面都被纳入到PI的本科和研究生教学中。结果将在专业文献中公布，并通过基于网络的资源和PI及其学生的公开讲座向公众提供。