Collaborative Research: BEST SYNTHESIS: The variable transport of pollock eggs and larvae over the Bering shelf: A marriage of physics and biology.

最近的白令海生态系统研究（BEST）计划及其合作伙伴白令海综合生态系统研究计划（BSIERP）已经更好地了解了温度和分层在调节白眼鳕鱼种群中的作用，但平流的作用仍然知之甚少。因此，资金的提供是为了阐明海洋如何？美国对大气强迫变化的响应影响白令海东部陆架上狭鳕（Theragra chalcogramma）卵和幼鱼的分布。所提出的方法建立在BEST-BSIERP项目取得的进展的基础上，并将结合新的建模结果和最近的观察结果来检查鳕鱼卵和幼虫的历史扩散路径，并将模拟这些路径在未来不同情景下的变化。平流，即流体运动对物质或特性的运输，在许多鱼类的生命周期中起着重要作用，因为早期生活史阶段依赖于从产卵区到合适的苗圃的准被动运输。卵和幼虫的漂流轨迹以及它们在产卵后最初几个月遇到的物理和生物条件变化很大，并与区域和大范围的气候条件有关。因此，大气和海洋学的变化影响了早期生命阶段的生存和由此产生的鱼类种群的年级强度，如白令海陆架东部的白眼鳕鱼。该项目的结果将提高我们对狭鳕的物理和生物过程相互作用的理解，从而导致更好地管理这一重要渔业。

The recent Bering Sea Ecosystem Study (BEST) program and its partner the Bering Sea Integrated Ecosystem Research Program (BSIERP) have resulted in a better understanding of the roles of temperature and stratification in regulating the walleye pollock population, but the role of advection remains poorly understood. Therefore, funds are provided to elucidate how the ocean?s response to variable atmospheric forcing affects the distribution of walleye pollock (Theragra chalcogramma) eggs and larvae on the eastern Bering Sea shelf. The proposed approach builds on advances made under the BEST-BSIERP program and will use a combination of new modeling results and recent observations to examine historical dispersal pathways of pollock eggs and larvae and will simulate how these might change in the future under various scenarios.Advection, the transport of material or a property by the movement of a fluid, plays a major role in the life cycle of many fish populations because early life history stages depend on quasi-passive transport from spawning areas to suitable nursery grounds. Drift trajectories of eggs and larvae and the physical and biological conditions they encounter during the first few months after spawning are highly variable and are linked to regional and broad-scale climate conditions. Thus atmospheric and oceanographic variability affects the survival of early life stages and the resulting year class strength of fish populations, such as walleye Pollock, on the eastern Bering shelf. The results of this project will improve our understanding of the interactions of physical and biological processes on walleye Pollock and, consequently, lead to better management of this important fishery.