A Comparison of Avian and Zooplankton Ecology in Two Western Arctic Polynyas

9321636狩猎该项目比较了圣劳伦斯岛波利尼亚(SLIP)和阿纳迪尔波尼亚海湾(GAP)的海鸟和浮游动物种群。滑移较浅(30-40米)，与较深(50-200米)缺口预计的强烈平流状态相比，预计水循环缓慢。科学家们预测，该缺口的海洋浮游动物群落将由从白令海斜坡地区平流而来的远洋新卡兰斯物种主导。而在滑落中，小型沿海物种可能会占据主导地位，但要到本季度末才会出现。该项目的前提是，占据开阔海域的海鸟群落将反映出远洋食物网的相对丰富程度，而浮游动物食性小海雀在空隙中将比在滑道中更丰富。预计滑行海鸟的食物将反映以表层底栖动物为主的食物网和固定在前一个季节的碳，而不是GAP，在GAP中，当年生产的碳可能是从不断生长的桡足类的斜坡上平流过来的。这项综合研究将对海鸟对多尼雅群岛碳收支的潜在影响作出第一次估计，并首次说明具有不同平流机制和假定碳循环路径的北极西部多尼亚地区的浮游动物和海鸟。***

9321636 Hunt The project compares seabirds and zooplankton populations in the St. Lawrence Island Polynya (SLIP) and in the Gulf of Anadyr Polynya (GAP). The SLIP is shallow (30-40m) and is expected to have a sluggish water circulation when compared to the strongly advective regime expected for the deeper (50-200m) GAP. Scientists predict that the ocean zooplankton community of the GAP will be dominated by pelagic Neocalanus species that have been advected from the slope region of the Bering Sea. Whereas in the SLIP, small coastal species will probably dominate but not until late in the season. The premise of the project is that seabird communities occupying the open ocean polynyas will reflect the relative abundance of pelagic food web and that zooplanktivorous auklets will be more abundant in the GAP than in the SLIP. It's expected that SLIP seabird diets will reflect an epibenthic dominated food web and carbon fixed in previous season contrary to that in GAP, where carbon from the current year's production may be advected from the slope in growing copepods. This integrated study will provide a first order estimate of the potential influence of seabirds on polynya carbon budgets, and the first accounts of zooplankton and seabirds in western Arctic polynyas with differing advective regimes and presumed carbon cycling pathways. ***