U.S.-GLOBEC: Vertical Distribution of Small Zooplankton During Turbulance Profiling on Georges Bank

U.S.-GLOBEC：乔治滩湍流剖面中小型浮游动物的垂直分布

• 批准号: 9313669
• 负责人: Lewis Incze
• 金额: $ 24.23万
• 依托单位: Bigelow Laboratory for Ocean Sciences
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-08-15 至 1999-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9313669&HistoricalAwards=false
• 关键词: U.S.; GLOBEC; Vertical; Distribution; Small

9313671 Beardsley Present evidence indicates that the recruitment and survival of commercially important fish larvae within the Georges Bank region depends critically on the development of stratification during the spring and summer period. Predicted climate change scenarios are likely to significantly influence the evolution of stratification and thus impact larval survival over Georges Bank. As part of U.S. GLOBEC Georges Bank Study, Dr. Beardsley and collaborators will conduct an intensive field project during January-August, 1995 aimed at better understanding the development of stratification over Georges Bank and its influence of larval fish survival. Preliminary studies will be initiated in 1994. The project will have a moored instrument component will involve deploying meteorological sensors and instruments throughout the water column, with a heavy concentration in the surface and bottom boundary layers. The data acquired will be used to resolve the stratification field and examine factors controlling its development. The shipboard measurement component will consist of five cruises following a concentration (patch) of the target species: cod and haddock larvae and their copepod prey, Calanus and Pseudocalanus. Using a variety of sampling systems,including drifters, MOCNESS, the Video Plankton Recorder (VPR), plankton pump, and multiple- high-frequency acoustical samplers, measurements will be made of: (1) hydrography, microturbulence, and currents, (2) the vertical and horizontal distributions of the target species in relation to water column stratification, (3) passive particle motions and the tree-dimensional swimming behaviors of individual zooplankton, and (4) the feeding and growth of larval cod and haddock in relation to water column stratification and prey distribution. The data will be used together with information from collaborative field and modeling studies to gain insights into the impact of stratification and turbulent mixing on gro wth and survival of zooplankton and fish populations.

9313671 Beardsley 目前的证据表明，乔治滩地区具有重要商业价值的鱼类幼虫的补充和存活很大程度上取决于春季和夏季期间分层的发展。 预测的气候变化情景可能会显着影响分层的演变，从而影响乔治滩上幼虫的生存。 作为美国 GLOBEC 乔治浅滩研究的一部分，Beardsley 博士和合作者将在 1995 年 1 月至 8 月期间进行一项密集的实地项目，旨在更好地了解乔治浅滩分层的发展及其对幼鱼生存的影响。 初步研究将于1994年启动。该项目将有一个系泊仪器部分，涉及在整个水体中部署气象传感器和仪器，主要集中在表面和底部边界层。 获得的数据将用于解析分层场并检查控制其发展的因素。 船上测量部分将包括五次巡航，跟踪目标物种的集中（斑块）：鳕鱼和黑线鳕幼虫及其桡足类猎物，Calanus和Pseudocalanus。 使用各种采样系统，包括漂流器、MOCNESS、视频浮游生物记录仪 (VPR)、浮游生物泵和多个高频声学采样器，将进行以下测量：(1) 水文学、微湍流和海流，(2 ）与水体分层相关的目标物种的垂直和水平分布，（3）被动粒子运动和个体浮游动物的树维游泳行为，以及（4）鳕鱼和黑线鳕幼体与水体分层和猎物分布的关系。 这些数据将与来自合作领域和建模研究的信息一起使用，以深入了解分层和湍流混合对浮游动物和鱼类种群生长和生存的影响。