Advection and Food Webs in the Western Arctic: Retrospective Sample and Data Analysis and Modelling

北极西部的平流和食物网：回顾性样本和数据分析与建模

• 批准号: 9815682
• 负责人: Sharon Smith
• 金额: $ 29.91万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-01 至 2002-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9815682&HistoricalAwards=false
• 关键词: Advection; Food; Webs; Western; Arctic

ABSTRACTOPP-9815682SMITH, SHARONMIAMI UNIVERSITY This project will initiate a study of the advection of large copepods onto continental shelves from the deep Arctic basin as a vital source of carbon for the planktonic ecosystem on the shelf. Without this source of carbon, the planktonic biota would have little food supply and the benthic fauna would dominate the food web. This fundamental process of transferring carbon from basin to upper waters of the shelf has not been studied in the Arctic ecosystem. The process is very important due to the possible overwintering of the copepods in the deep basin where they can serve as an annual source of food for zooplankton and fish when advected to the shelf during the short Arctic summer. The investigator will use retrospective analysis of data collected in the Chukchi and Beaufort Seas to develop a biological model of the advection of copepods to test hypotheses about the migration of plankton as well as the effects of ocean circulation on the process. The model will allow testing of global change impacts on the availability of this important food source on the shelf. The results of this project will provide input for planning a large Phase 2 field program of the Shelf Basin Interactions project in 2002 in the same geographic area.

ABSTRACTOPP-9815682SMITH，沙龙迈阿密大学 该项目将启动一项研究，研究大型桡足类动物从北极深海盆地平流到大陆架上，作为大陆架浮游生态系统的重要碳源。 如果没有这种碳源，浮游生物群将几乎没有食物供应，而底栖动物群将在食物网中占据主导地位。 这种将碳从盆地转移到陆架上部水域的基本过程尚未在北极生态系统中得到研究。 这一过程非常重要，因为桡足类可能在深盆地越冬，在北极短暂的夏季平流到陆架时，它们可以作为浮游动物和鱼类的年度食物来源。 研究人员将对在楚科奇海和波弗特海收集的数据进行回顾性分析，开发桡足类平流生物模型，以检验有关浮游生物迁移以及海洋环流对该过程影响的假设。 该模型将允许测试全球变化对货架上这一重要食物来源的可用性的影响。 该项目的结果将为 2002 年在同一地理区域规划大型陆架盆地相互作用项目第二阶段实地计划提供投入。