Collaborative Research: Diapausing Eggs and the Dynamics of Plankton Communities

Caceres&amp；TessierDEB-9816047&amp；9816191生态系统的许多特征都受到与之相关的生物体的生活史特征的影响。这项研究项目将研究关键的生活史阶段休眠与栖息地的一系列生态特征之间的联系，在这些特征中，休眠可以在控制生物的发生和影响方面发挥重要作用。休眠是淡水浮游动物生活史上的一个重要因素。这项合作研究项目将研究滞育在浮游动物关键属--水蚤存在时的功能作用，以及它的出现对湖泊-浮游生物系统的其他组成部分的影响。这将使浮游生物食物网的研究超越其典型的年复一年的基础，以更长远的视角进行。它将专门测试在特定湖泊和甲虫种群的休眠投资和活跃期的持续之间是否存在权衡。这个项目将开发一个多年的视角，将休眠的生活史理论与营养动态与栖息地永久自然梯度的背景联系起来。

Caceres & TessierDEB-9816047 & 9816191Many features of ecological systems are influenced by the life-history traits of the organisms that occur with them. This research project will examine links between a key life-history stage, dormancy, and a series of ecological features of habitats where it can play an important role in controlling the occurrence and influence of organisms. Dormancy is a important factor in the life histories of freshwater zooplankton species. This collaborative research project will examine the functional role of diapause in the existence of a key zooplankton genus, Daphnia, and the influence of its occurrence on other components of lake-plankton systems. It will allow plankton food-web studies to go beyond their typical year-by-year basis to take a longer term perspective. It will test specifically whether there is a trade off between investments in dormancy and the persistence of active stages for specific lakes and daphnid populations. This project will develop a multi-year perspective that links life-history theory on dormancy to trophic dynamics with the context of a natural gradient of habitat permanence.