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

艾伯特：作为大规模洋流模式对海胆繁殖可能产生影响的研究的一部分，自1990年以来，我们一直在监测加州北部和南部海胆每周的定居情况。过去的厄尔尼诺事件似乎对一些物种的定居产生了重大影响。卫星图像显示，在加州北部，1992年和1993年海胆数量异常高，这与上升流的中断和表面洋流的变化有关。然而，在南加州，有证据表明定居减少了。目前，一个新的厄尔尼诺现象正在南半球发生。我们建议开展一项合作研究，以扩大我们观察的空间尺度，包括加利福尼亚中部，并增加我们调查的分类学范围，包括短肢蟹和双壳类。这项调查将提供一个独特的机会来检验基于我们在不同海洋区域的早期工作的预测。

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.