SGER: Effects of El Nino Oceanographic Conditions on the Settlement Patterns of Marine Invertebrates in Southern, Central and Northern California

作为大规模水流模式对海胆招募可能影响研究的一部分，自1990年以来，我们一直在监测加利福尼亚州北部和南部地点每周海胆的定居情况。过去的厄尔尼诺事件似乎对几个物种的定居产生了重大影响。在加利福尼亚州北部，卫星图像显示，1992年和1993年异常高的海胆聚居地与上升流的分解和表面洋流的变化有关。然而，在南加州，有证据表明定居点减少了。目前，南半球正在发生一次新的厄尔尼诺事件。我们提出了一项合作研究，将扩大我们观察的空间范围，将加州中部包括在内，并通过包括短毛蟹和双壳类来增加我们调查的分类范围。这项调查将提供一个独特的机会，以检验基于我们在不同海洋区域的早期工作所作的预测。

Ebert As part of a study of the possible influence of large-scale current patterns on the recruitment of sea urchins, we have been monitoring the weekly settlement of sea urchins at sites in northern and southern California since 1990. Past El Nino events appear to have significantly affected the settlement of several species. In northern California, an unusually high sea urchin settlement in 1992 and 1993 was associated with the breakdown in upwelling and changes in surface currents, as indicated by satellite imagery. In southern California, however, there was evidence of decreased settlement. Currently a new El Nino event is occurring in the southern hemisphere. We propose a collaborative study that will expand the spatial scale of our observations to include central California and to increase the taxonomic scope of our investigations by including brachyuran crabs and bivalves. This investigation will provide a unique opportunity to test predictions based on our earlier work in different oceanographic regions.