Coupling Biological and Physical Processes Responsible for Retention of Coral Reef Fish Larvae

9521104 COWEN人们普遍认识到，珊瑚礁鱼类的幼虫是由洋流运送到珊瑚礁栖息地的。然而，人们对幼鱼为确保它们返回成年栖息地所做的行为知之甚少。这项研究将采用跨学科的方法来研究流通模式如何影响留用和招聘。具体地说，将在一个孤岛（巴巴多斯）附近进行仔鱼分布的三维调查、定期监测捕捞情况和详细测量水流情况。幼鱼将用MOCNESS网拖收集。当地的水流和水柱结构将用ADCP、CTD、流速计和卫星图像绘制。来自这些水系和仪器的数据将为了解当地水流年际和年际变化之间的联系以及与中尺度事件的频率和持续时间的关系提供基础。＊＊＊

9521104 COWEN It is widely appreciated that coral reef fish larvae are transported to reef habitats by ocean currents. However, little is known about the behaviors that larval fishes perform to ensure their return to adult habitats. This study will employ an interdisciplinary approach to examine how circulation patterns influence retention and recruitment. Specifically, three- dimensional surveys of larval fish distributions, periodic monitoring of recruitment and detailed measurements of the water flow regime will be conducted in the vicinity of an isolated island (Barbados). Larval fishes will be collected with MOCNESS net tows. Local flow and water column structure will be mapped with ADCP, CTD, current meters and satellite imagery. Data from these tows and instruments will provide a basis for understanding linkages between the intra- and interannual variability of local flow, as well as relationships to the frequency and duration of mesoscale events. ***