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RACER: Development, Growth and Production of Macrozooplankton, Including Krill

RACER：大型浮游动物（包括磷虾）的发育、生长和生产

基本信息

批准号：
8817779
负责人：
Mark Huntley
金额：
$ 94.35万
依托单位：
University of California-San Diego Scripps Inst of Oceanography
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1989
资助国家：
美国
起止时间：
1989-05-15 至 1993-10-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8817779&HistoricalAwards=false
关键词：
RACER Development Growth Production Macrozooplankton

项目摘要

Throughout the world ocean, coastal regions dominate biological production; however, knowledge of biological processes in the Southern Ocean derives mostly from studies of the circumpolar open sea. Ecosystem dynamics of Antarctic coastal zones are virtually unknown. The present objective is to focus on the northern Gerlache Strait, where the coastal ecosystem processes will be studied in detail. This portion of RACER (Research on Antarctic Coastal Ecosystem Rates) will study the development, growth and productivity of zooplankton, including krill. Specific new objectives are to determine physical circulation, residence time and dispersion of populations; events leading up to the annual spawning of krill; growth and development of 3 principal species (Euphausia superba, Calanoides acutus and Metridia gerlachei); flux of carbon and nitrogen through macrozooplankton. Studies will include the use of ARGOS-linked Lagrangian drifters, zooplankton nets and shipboard laboratory experiments. Principal analytical methods will include computation of Lagrangian flows and dispersion rates, cohort analysis and size-dependent modelling of zooplankton production. Biodynamic processes in the northern Gerlache Strait may be characteristic of many nearshore marine environments of Antarctica. This study may therefore provide new insights into the functioning of Antarctic coastal ecosystems.

纵观世界海洋，沿海地区主导着生物生产；然而，对南大洋生物过程的了解主要来自于对环极公海的研究。南极海岸带的生态系统动力学实际上是未知的。目前的目标是集中在Gerlache海峡北部，在那里将详细研究沿海生态系统过程。南极海岸生态系统速率研究的这一部分将研究包括磷虾在内的浮游动物的发育、生长和生产力。具体的新目标是确定人口的物质流通、居住时间和分散；导致磷虾每年产卵的事件；3个主要种属（大鳞金蝇、尖角Calanoides和Metridia gerlachei）的生长发育；大型浮游动物体内碳和氮的通量。研究将包括使用与argos相关的拉格朗日漂流器、浮游动物网和船上实验室实验。主要的分析方法将包括拉格朗日流量和分散率的计算，队列分析和浮游动物生产的大小依赖模型。Gerlache海峡北部的生物动力学过程可能是南极洲许多近岸海洋环境的特征。因此，这项研究可能为南极沿海生态系统的功能提供新的见解。