Collaborative Research: Diapausing Eggs and the Dynamics of Plankton Communities

合作研究：滞育卵和浮游生物群落的动态

• 批准号: 9816047
• 负责人: Carla Caceres
• 金额: $ 22.65万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-03-01 至 2003-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9816047&HistoricalAwards=false
• 关键词: Collaborative; Research; Diapausing; Eggs; Dynamics

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.

Caceres TessierDEB-9816047 9816191生态系统的许多特征受到与它们一起出现的生物的生活史特征的影响。 该研究项目将研究关键的生命史阶段，休眠和栖息地的一系列生态特征之间的联系，在那里它可以在控制生物体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中的一个重要因素。 这一合作研究项目将研究滞育在浮游动物中的重要作用，水蚤属，以及其发生对湖泊浮游生物系统的其他组成部分的影响。 它将使浮游生物食物网研究超越其典型的逐年基础，采取更长远的观点。 它将专门测试是否有休眠投资和特定湖泊和水蚤种群的活跃阶段的持久性之间的权衡。 该项目将发展一个多年的观点，将休眠的生活史理论与生境持久性的自然梯度背景下的营养动态联系起来。