Response and Compensation to a Bivalve Invasion by an Aquatic Ecosystem

9508981斯特莱尔对水生生态系统入侵双壳类的反应和补偿来自世界各地的数以千计的动植物物种已经在北美定居。在某些情况下，这些外来物种似乎对当地生态系统几乎没有影响，而在另一些情况下，当地物种和生态系统受到了不可逆转的深刻影响。我们正在研究欧洲害虫斑马贻贝对哈德逊河生态系统的影响。斑马贻贝大约在1990年到达哈德逊河，现在是河中数量最多的动物。它大大减少了150公里长的河流中浮游植物和小型浮游动物(食物链底部的小型动植物)的密度，但生态系统的其他组成部分受到的影响要小得多。我们将使用长期的实地研究、计算机模型和小规模实验来研究哈德逊河生态系统的不同部分如何对斑马贻贝种群做出反应。通过研究哈德逊河斑马贻贝入侵的细节，我们希望确定控制本地生态系统对外来物种入侵敏感性的一般特征。?？

9508981 STRAYER Response and compensation to a bivalve invasion by an aquatic ecosystem Thousands of species of plants and animals from around the world have become established in North America. In some cases, these exotic species seem to have had little or no effect on native ecosystems, whereas in other cases native species and ecosystems have been deeply and irreversibly affected. We are studying the effects of the zebra mussel, a European pest, on the Hudson River ecosystem. The zebra mussel arrived in the Hudson in about 1990, and is now by far the most abundant animal in the river. It has dramatically reduced densities of phytoplankton and small zooplankton (the small plants and animals at the base of the food chain) over a 150-km reach of the river, but other components of the ecosystem have been affected much less severely. We will use long-term field studies, computer models, and small-scale experiments to examine how the various parts of the Hudson River ecosystem respond to the zebra mussel population. By studying the details of the zebra mussel invasion in the Hudson, we hope to identify the general features that control the sensitivity of native ecosystems to invasions of exotic species. ??