Metapopulation Dynamics of the New England Cobble Beach Plant Community

新英格兰鹅卵石海滩植物群落的种群动态

• 批准号: 0108780
• 负责人: John Bruno
• 金额: $ 13.93万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-01 至 2004-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0108780&HistoricalAwards=false
• 关键词: Metapopulation; Dynamics; New; England; Cobble

The goal of this study is to determine how characteristics of the landscape and species life history traits (i.e., annuals vs. perennials and rare vs. common species) interact to determine the large-scale (i.e., 10 km to 100 km) distribution and dynamics of plant populations. Factors such as habitat patch size and the distance from the nearest neighboring population are thought to control the probabilities of population extinction and the subsequent re-colonization of a vacant location. Very few field studies have been performed to test these predictions. This investigation will focus on coastal wetland plants in Narragansett Bay, RI, USA. GPS technologies will be used to map out the location of wetland habitats and yearly surveys of 350 habitat patches within a 20 x 30 km study area will document population extinction and patch re-colonization by 12 plant species. Understanding how landscape characteristics affect the large-scale dynamics of populations is fundamental to biological conservation. For example, such information can be used to optimally design marine reserves, ensuring that networks of protected areas are large enough and close enough to each other to maintain stable populations of rare and endangered species. This study will also enable resource managers to detect and mitigate the effects of environmental impacts to this and other wetland habitats.

这项研究的目的是确定景观特征和物种生活史特征(即一年生与多年生以及稀有与常见物种)如何相互作用，以确定大范围(即10公里至100公里)植物种群的分布和动态。栖息地斑块的大小和与最近的邻近种群的距离等因素被认为控制了种群灭绝和随后空置地点的重新殖民的可能性。很少有实地研究来检验这些预测。本次调查的重点是美国里士满纳拉甘西特湾的滨海湿地植物。将使用GPS技术绘制湿地栖息地的位置图，每年对20 x 30公里研究区域内的350块栖息地进行调查，将记录12种植物的种群灭绝和斑块重新定居。了解景观特征如何影响种群的大规模动态是生物保护的基础。例如，这些信息可以用来优化海洋保护区的设计，确保保护区网络足够大，彼此足够接近，以维持稀有和濒危物种的稳定种群。这项研究还将使资源管理者能够检测和减轻环境对该湿地栖息地和其他湿地生境的影响。