Foodweb Dynamics of Mangrove Habitats in Pakistan

巴基斯坦红树林栖息地的食物网动态

• 批准号: 8818807
• 负责人: Saiyed Ahmed
• 金额: $ 40.36万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-09-01 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8818807&HistoricalAwards=false
• 关键词: Foodweb; Dynamics; Mangrove; Habitats; Pakistan

Description: This project supports cooperative research by Dr. Saiyed I. Ahmed, School of Oceanography, University of Washington, Seattle, and Dr. G.S. Quraishee, Director, National Institute of Oceanography, Karachi, Pakistan, on the foodweb dynamics of mangrove habitat. The research objective is to determine the relative flow of carbon and energy from mangrove and algal detritus to the aquatic foodweb. This information would help identify the relationship between environmental and anthropogenic disturbances and these fluxes and the mangrove foodweb. The study will: 1. Examine the phenology of Pakistani mangroves with emphasis on leaf-litter production 2. Study decomposition of mangrove leaves and determine the availability of the resulting particulate and disolved organic carbon to bacteria and other aquatic foodweb components such as benthic invertebrates 3. Determine the relative contribution of mangroves and algae to the primary productivity of this estuarine ecosystem and 4. Determine the distribution and productivity of bacteria and phytoplankton and their relationship with nutrients and other chemical factors. Scope: The project will involve extensive field work in the deltaic area of the Indus river near Karachi in Pakistan. The work will involve several U.S. scientists and graduate students from the University of Washington, Scripps Institute of Oceanography, University of Georgia and University of Miami, and from Pakistan's NIO with logistical support provided by the NIO, and the Pakistan Navy, through its research vessel as needed. The Indus delta provides a suitable field for this research by allowing for studies in the dry season (pre-monsoon), during the rainy season, and subsequent to the cessation of rains, thus permitting study of the changes in a variety of physical and chemical factors. Laboratory work in microbiology and physiology will be done in the U.S. and will allow for training of NIO staff. This will enhance the capabilities for the field work. The Office of Naval Research is partially supporting this research by providing Pakistani currency funds.

项目说明：本项目支持西雅图华盛顿大学海洋学院赛义德·艾哈迈德博士和巴基斯坦卡拉奇国家海洋学研究所所长G.S. Quraishee博士就红树林栖息地的食物网动态进行合作研究。研究目的是确定从红树林和藻类碎屑到水生食物网的碳和能量的相对流量。这些信息将有助于确定环境和人为干扰与这些通量和红树林食物网之间的关系。该研究将：1。研究巴基斯坦红树林的物候，重点是落叶的产生2。研究红树林树叶的分解，确定由此产生的颗粒和溶解的有机碳对细菌和其他水生食物网成分（如底栖无脊椎动物）的可利用性。确定红树林和藻类对该河口生态系统初级生产力的相对贡献；确定细菌和浮游植物的分布和生产力，以及它们与营养和其他化学因素的关系。范围：该项目将在巴基斯坦卡拉奇附近的印度河三角洲地区进行广泛的实地工作。这项工作将涉及来自华盛顿大学、斯克里普斯海洋学研究所、佐治亚大学和迈阿密大学的几名美国科学家和研究生，以及来自巴基斯坦NIO的学生，NIO和巴基斯坦海军根据需要通过其研究船提供后勤支持。印度河三角洲为这项研究提供了一个合适的领域，允许在旱季（季风前）、雨季和降雨停止之后进行研究，从而允许研究各种物理和化学因素的变化。微生物学和生理学的实验室工作将在美国完成，并允许对蔚来员工进行培训。这将提高实地工作的能力。海军研究办公室通过提供巴基斯坦货币资金部分支持这项研究。