Collaborative Research: Will Climate Change Alter Rates of Old Field Succession Across the U.S. Eastern Deciduous Forest? A Cross-latitude Experimental Network

合作研究：气候变化会改变美国东部落叶林旧田的演替率吗？

基本信息

批准号：
0742861
负责人：
Jason Fridley
金额：
$ 6.75万
依托单位：
Syracuse University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2008
资助国家：
美国
起止时间：
2008-04-01 至 2010-03-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0742861&HistoricalAwards=false
关键词：
Collaborative Research Will Climate Change

项目摘要

Studies of how ecological communities change over time have provided key insights into mechanisms that influence the identity and abundance of species within communities. Most studies of succession have focused on changes within a local area, rather than comparing patterns of change over broad geographic regions. Comparison of published studies suggests that temperature may be an important factor in limiting the rate at which tree cover is reestablished following disturbance in deciduous forests in the eastern United States. Experiments at 6 sites, along a latitudinal gradient from Syracuse, NY, to Tallahassee, FL, will be used to test the importance of temperature, soil fertility, and plant species pools as major drivers of rates of germination, growth, and survival of pioneer trees in eastern deciduous forest ecosystems. Use of widely distributed sites spanning the north-to-south extent of eastern deciduous forests is key to this study as it allows similar manipulations of soils and species composition across a significant temperature gradient. Data from these experiments will be incorporated into a hierarchical modeling structure that will assess the controls on rates of forest succession, and they will provide insights into a potential effect of climate change on management strategies for these forests. Two young faculty investigators will be supported by this project, as will a number of undergraduate students who will participate in many aspects of the research.

关于生态社区如何随着时间变化的研究为影响社区中物种的身份和丰富性的机制提供了关键的见解。大多数继承研究都集中在当地内部的变化上，而不是比较广泛地理区域的变化模式。对已发表研究的比较表明，在美国东部落叶林中干扰后，温度可能是限制树覆盖率的重要因素。从纽约州锡拉丘兹到佛罗里达州塔拉哈西的纬度梯度的6个地点进行的实验将用于测试温度，土壤生育能力和植物物种池的重要性，这是东部落叶森林生态系统中先驱树的发芽率，生长和先驱树的存活率的主要驱动力。跨越东部落叶森林北到南范围的广泛分布的地点是这项研究的关键，因为它允许在大量温度梯度上进行类似的土壤和物种组成的操纵。这些实验的数据将纳入一个分层建模结构中，该结构将评估森林继任率的控制，它们将提供有关气候变化对这些森林管理策略的潜在影响的见解。该项目将为两名年轻的教师调查员提供支持，许多将参加研究的许多方面的本科生也将得到支持。