Workshop on the Role of Pack Ice Seals in Antarctic Ecosystems

浮冰海豹在南极生态系统中的作用研讨会

• 批准号: 9615719
• 负责人: John Bengtson
• 金额: $ 3.94万
• 依托单位: NOAA National Marine Fisheries Service
• 依托单位国家: 美国
• 项目类别: Interagency Agreement
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-15 至 1998-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9615719&HistoricalAwards=false
• 关键词: Workshop; Role; Pack; Ice; Seals

9615719 BENGTSON The pack ice region surrounding Antarctica contains at least half of the world's population of seals, with population levels comprising about eighty percent of the world' total piniped biomass. These seals are among the dominant top predators in Southern Ocean ecosystems and the fluctuation in their populations, patterns of growth and life histories provide a potential source of information about environmental variability integrated over a wide range of spatial and temporal scales. As top predators, seals are like to be sensitive to changes in the dynamics of ecosystems and , in particular, variations in the flux of photosynthetically fixed carbon to higher levels of the food web caused by either climatic or ecological changes. To assess the functional significance of these seals in Southern Ocean ecosystems, the Scientific Committee for Antarctic Research, the scientific body which provides advice to the Antarctic Treaty nations, developed a program focused on Antarctic Pack Ice Seals. This workshop will bring together an interdisciplinary group of scientists to develop research priorities for the US contribution to this international program. In particular, the development of an interdisciplinary cruise plan, will move the US forward in addressing important questions related to pack ice seals and their environment.

9615719 BENGTSON南极洲周围的浮冰区包含了世界上至少一半的海豹种群，其种群数量约占世界总生物量的80%。这些海豹是南大洋生态系统中占主导地位的顶级掠食者，其种群数量、增长模式和生活史的波动提供了关于在广泛的空间和时间尺度上综合的环境变异性的潜在信息来源。作为顶级掠食者，海豹对生态系统动态的变化非常敏感，特别是对气候或生态变化引起的光合作用固定碳向更高层次食物网流动的变化非常敏感。为了评估这些海豹在南大洋生态系统中的功能重要性，南极研究科学委员会（为南极条约国家提供建议的科学机构）制定了一项专注于南极浮冰海豹的计划。这次研讨会将汇集一个跨学科的科学家小组，为美国对这一国际计划的贡献制定研究重点。特别是，跨学科巡航计划的发展，将推动美国在解决有关浮冰海豹及其环境的重要问题。