Research in Modeling Metabolism of Attached Stream Algae

附流藻类代谢模拟研究

• 批准号: 9602572
• 负责人: Walter Dodds
• 金额: $ 1.46万
• 依托单位: Kansas State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-01-01 至 1997-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9602572&HistoricalAwards=false
• 关键词: Research; Modeling; Metabolism; Attached; Stream

9602572 Dodds Dr. Walter Dodds, Division of Biology, Kansas State University, and Dr. Barry Biggs, National Institute of Water and Atmospheric Research (NIWA), Christchurch, New Zealand will conduct collaborative research in New Zealand on the metabolism of stream algae. Mixed assemblages of microorganisms (biofilms or periphyton) coat surfaces in streams and rivers. These assemblages are generally the main energy source for higher trophic levels in unshaded temperate region streams. In stable-flowing, enriched streams periphyton can proliferate causing water management problems. Dr. Barry Biggs and his co-workers have characterized extensively the periphyton communities and associated land use practices in a large number of the highly diverse streams and rivers in New Zealand and have established the best empirical model of factors controlling periphyton biomass and composition from any area in the world. New Zealand provides an outstanding natural laboratory because heterogeneity of geological, climatic and human use is extreme and occurs over very small spatial scales (a few 100 km) relative to typical continental areas. Dr. Dodds will link the unique data of his counterpart to small scale metabolic measurements made with flow, light and O2 microprobes and use this information to create a predictive mechanistic model of stream biofilm metabolism for the different community types. This model will provide a basis for more general models of stream ecosystem function. Such models are needed to assess responses of stream water quality and ecosystem function to human disturbance.

9602572 Dodds 堪萨斯州立大学生物学系的 Walter Dodds 博士和新西兰基督城国家水与大气研究所 (NIWA) 的 Barry Biggs 博士将在新西兰开展关于溪流藻类新陈代谢的合作研究。 微生物的混合组合（生物膜或附生生物）覆盖在溪流和河流的表面。 这些组合通常是无遮蔽的温带地区溪流中较高营养级的主要能源。 在水流稳定、丰富的溪流中，附生生物会增殖，导致水管理问题。 Barry Biggs 博士和他的同事对新西兰大量高度多样化的溪流和河流中的附生生物群落和相关土地利用实践进行了广泛的描述，并建立了控制世界任何地区附生生物生物量和组成因素的最佳经验模型。 新西兰提供了一个出色的自然实验室，因为地质、气候和人类利用的异质性非常大，并且相对于典型的大陆地区而言，发生在非常小的空间尺度（几百公里）内。 Dodds 博士将把他的同行的独特数据与使用流量、光和 O2 微探针进行的小规模代谢测量联系起来，并利用这些信息为不同群落类型创建流生物膜代谢的预测机制模型。 该模型将为更通用的河流生态系统功能模型提供基础。 需要这样的模型来评估溪流水质和生态系统功能对人类干扰的响应。