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Effects of Vegetative Reproduction on the Distribution and Abundance of Benthic Marine Invertebrates

营养繁殖对底栖海洋无脊椎动物分布和丰度的影响

基本信息

批准号：
9012168
负责人：
Howard Lasker
金额：
$ 9.29万
依托单位：
SUNY at Buffalo
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1990
资助国家：
美国
起止时间：
1990-08-01 至 1993-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9012168&HistoricalAwards=false
关键词：
Effects Vegetative Reproduction Distribution Abundance

项目摘要

Colonial species unlike aclonal species of ten generate new colonies a sexually through fission or fragmentation. This form of vegaetative reproduction plays an important role in determining species abundances and community structure. Thus, an understanding of vegetative reproduction and the conditions under which it is successful is a necessary component of the study of marine communities. Vegetative reproduction also has important effects on population genetics and these effects may control the resilience of species to changes in climate. Previous work on vegetative reproduction has focused on quantifying the effect of vegetative propagation on short term population dynamics within single populations. That work has not considered the effects of clonal growth on the production of new clones nor the selective pressures for propagules which can disperse between habitats. In the proposed research I will complement work on vegetative reproduction among Caribbean gorgonians with new data on larval production, dispersal, survival and settlement. These data will allow me to determine the interaction between vegetative reproduction, sexual reproduction and the dispersal of larvae to new habitats. The data will provide a quantitative basis for understanding the effects of vegetative reproduction on marine communities.

与十个无克隆物种不同，殖民地物种通过裂变或分裂有性地产生新的殖民地。这种形式的营养繁殖在决定物种丰度和群落结构方面发挥着重要作用。因此，了解营养繁殖及其成功的条件是海洋群落研究的必要组成部分。营养繁殖也对种群遗传学产生重要影响，这些影响可能控制物种对气候变化的适应能力。先前有关无性繁殖的工作主要集中于量化无性繁殖对单一种群内短期种群动态的影响。这项工作没有考虑克隆生长对新克隆产生的影响，也没有考虑对可以在栖息地之间传播的繁殖体的选择压力。在拟议的研究中，我将用幼虫生产、扩散、生存和定居的新数据来补充加勒比柳珊瑚的营养繁殖工作。这些数据将使我能够确定营养繁殖、有性繁殖和幼虫扩散到新栖息地之间的相互作用。这些数据将为了解营养繁殖对海洋群落的影响提供定量基础。