U.S.-GLOBEC: Zooplankton Recruitment Variability and Advective Processes on Georges Bank: Diet of Early Stage Copepods

U.S.-GLOBEC：乔治银行的浮游动物招募变异性和平流过程：早期桡足类的饮食

• 批准号: 9632634
• 负责人: Dian Gifford
• 金额: $ 30.5万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-15 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9632634&HistoricalAwards=false
• 关键词: U.S.; GLOBEC; Zooplankton; Recruitment; Variability

9632634 GIFFORD The specific focus of this project will be to describe quantitatively the contribution of nano- and microplankton (i.e., plants and animala, 2-200 um in size) prey fields to recruitment of target copepod populations on Georges Bank. The PIs hypothesize that early stage copepods advected onto the Bank from the Gulf of Maine and the Great South Channel experience an enriched food environment on-Bank relative to source regions. The project will examine consumption of nano- and microplankton by naupliar stages N3-N6 of the calanoid copepods Calanus finmarchicus and Pseudocalanus spp. in: 1) source areas in the Great South Channel and the Gulf of Maine where the advective regime contributes water (and presumably copepods) to Georges Bank; 2) on-Bank regions receiving these inputs, including the region of enhanced production on the Northeast Peak; and 3) areas on either side of the tidal front separating the Bank crest from deeper waters on the Southern Flank. The study focuses on Calanus and Pseudocalanus because these species dominate the zooplankton biomass of Georges Bank during the January-June period. Naupliar stages will be studied because these are the stages at which copepods recruit to the population. Field sampling will be conducted in the Great South Channel and southern Gulf of Maine because these are sites for advective inputs of water and zooplankton onto the Bank crest. This project is a part of the U.S. GLOBEC Northwest Atlantic Field Studies, Phase 2 program. ***

9632634 Gifford该项目的具体重点是定量描述纳米和微膨胀的贡献（即植物和动物，大小为2-200 um）猎物领域对Georges Bank上的目标CopePod人群的募集。 PIS假设，早期的Copepods从缅因州湾驶向银行，而大南方河道（Great South Channel）则经历了相对于来源地区的丰富食品环境。该项目将通过Naupliar阶段的calanoid copepods calanus finmarchicus和pseudocalanus spp来检查纳米和微量浮游生物的消费。在：1）大南海峡和缅因州湾的来源地区，对流政权向乔治银行贡献了水（大概是Copepods）； 2）接收这些投入的银行区域，包括东北峰的增强生产区域； 3）潮汐沿两侧的区域将河岸峰与南侧的深水区分开。该研究的重点是calanus和pseudocalanus，因为这些物种在1月至6月期间主导了乔治银行的浮游生物。将研究Naupliar阶段，因为这些是Copepods招募人口的阶段。 将在缅因州的大南通道和南部海湾进行现场抽样，因为这些是水和浮游动物座的占流投入的地点。 该项目是美国环球西北大西洋现场研究，第二阶段计划的一部分。 ***