SGER: Impacts of El Nino on Settlement Patterns of Nearshore Invertebrates in Southern California

我们建议检验一个假设，解释在厄尔尼诺条件下，一些南加州近岸无脊椎动物的定居和陆上运输速率应该减少。受影响的物种将是那些依赖于陆上运输的内部运动的物种。该假说将温跃层结构、幼虫垂直分布和陆上运输联系起来。为了验证这一假设的预测，我们提出了一个南加州和北下加利福尼亚州近海的监测计划。观测方案包括：(A)评估幼虫分布的三次巡航；(B)每周监测分布在100公里海岸线上的四个近岸地点的藤壶栖息地；以及(C)在相同地点的近岸系泊处监测温度。

We propose to test a hypothesis explaining that settlement and onshore transport rates of some Southern California nearshore invertebrates should decrease in El Ni¹o conditions. Species affected would be those depending on internal motions for onshore transport. The hypothesis links thermocline structure, larval vertical distribution, and onshore transport. To test the hypothesis' predictions, we propose a monitoring program off Southern California and Northern Baja California. The observational program includes (a) three cruises for assessing larval distribution, (b) weekly monitoring of barnacle settlement at four nearshore locations spread along 100 km of coastline, and (c) temperature monitoring with nearshore moorings at the same locations.