U.S. GLOBEC: A Retrospective Analysis of Variability in Zooplankton Composition on Georges Bank and the Northwest Atlantic

9632738索洛作为美国GLOBEC西北大西洋实地研究第二阶段计划的一部分，该项目将对以前从乔治斯滩南侧的系泊阵列收集的数据进行回溯性分析。该项目的目标是研究乔治海岸及其周围浮游动物群落相对丰度或组成的年际至年代际变化。假设有三个因素控制浮游动物群落：1)大小选择性捕食，2)中尺度平流或“冲刷”事件，3)垂直混合。在本研究的三个阶段中，将考虑对这些假设的检验。首先，一项新开发的统计技术将应用于MARMAP浮游动物数据，以确定乔治斯海岸和三个邻近地区--缅因湾、新英格兰南部和大西洋中部海湾--浮游动物组成的趋势。接下来，将利用捕食者数量、海洋表面温度和风/热分层的历史数据来预测对区域浮游动物组成的预期影响。第三，分析将扩展到MARMAP时期(1977-1987)，纳入早期调查(亚特兰蒂斯，1939-1941年；连续浮游生物记录仪，1962-1989年)和第一阶段GLOBEC(1994-1996年)的数据。***

9632738 SOLOW As part of the U.S. GLOBEC Northwest Atlantic Field Studies, Phase 2 program this project will conduct a retrospective analysis of data previously collected from a moored array along the southern side of Georges Bank. The goal of the project is to study interannual to interdecadal variations in the relative abundance or composition of zooplankton communities on and around Georges Bank. Three factors are hypothesized to control zooplankton communities: 1) size-selective predation, 2) mesoscale advective or "wash-out" events, and 3) vertical mixing. Tests of these hypotheses will be considered during the three phases of this study. First, a newly developed statistical technique will be applied to MARMAP zooplankton data to identify trends in zooplankton composition on Georges Bank and the three adjacent regions, i.e., the Gulf of Maine, Southern New England, and the Mid-Atlantic Bight. Next, historical data on predator abundance, sea surface temperature, and wind/thermal stratification will be used to develop predictions about the expected effects on regional zooplankton compositions. Third, the analyses will be extended beyond the MARMAP period (1977- 1987), by incorporating data both from earlier surveys (Atlantis, 1939-1941; Continuous Plankton Recorder, 1962-1989) and from Phase I GLOBEC (1994-1996). ***