U.S. GLOBEC Phytoplankton and Protozoa in the Diets of Copepods and Larval Cod on Georges Bank

小行星9313679 该项目代表了一个多学科的组成部分，在美国的主持下，多研究者计划- GLOBEC西北大西洋倡议。 总体方案，在序言中描述了这一建议，建议研究的生活史和重要的生理速率导致招聘的鳕鱼，黑线鳕，和他们的食物资源乔治银行。 具体而言，该项目旨在定量和定性地描述乔治银行的纳米和微型浮游生物捕食场，并测量纳米和微型浮游生物的消耗（即2-200微米大小的植物和动物猎物）的早期生活史阶段的大西洋鳕鱼，Gadus morhua，和所有桡足类生活史阶段的一个主要猎物物种，在乔治浅滩不同的水柱混合和分层条件下，对鳍状哲水蚤（Calanus finmarchicus）进行了研究。 消费者的摄食率将在船上实验中使用自然猎物组合直接测量。 杂食性喂养的消费者的近距离影响将被解释在现场猎物领域和物理制度（混合与分层）的背景下。 最终，消费者饮食中的植物与动物猎物的影响将在其他消费者分布，条件，生活史参数和生产的调查人员进行测量的背景下合作解决。 ***

9313679 Sieracki This project represents one component of a multidisciplinary, multi-investigator program under the aegis of the U.S.-GLOBEC Northwest Atlantic initiative. The overall program, described in the Prologue to this proposal, proposes to study the life histories and vital physiological rates leading to recruitment of cod, haddock, and their food resources on Georges Bank. Specifically, this project seeks to describe quantitatively and qualitatively the nano- and micro- plankton prey fields on Georges Bank and to measure consumption of nano- and microplankton organisms (i.e. plant and animal prey 2-200 um in size) by early life history stages of Atlantic cod, Gadus morhua, and by all copepodid life history stages of one of its major prey species, the calanoid copepod, Calanus finmarchicus, under various conditions of water column mixing and stratification on Georges Bank. Ingestion rates of consumers will be measured directly in shipboard experiments using natural prey assemblages. The proximate influence of omnivorous feeding on the consumers will be interpreted in the context of the in situ prey field and physical regime (mixing versus stratification). Ultimately, the influence of plant versus animal prey in consumer diet will be addressed collaboratively in the context of measurements made by other investigators of consumer distribution, condition, life history parameters and production. ***