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DISSERTATION RESEARCH: Examination of range-wide variation in American ginseng (Panax quinquefolius L.) demography and population viability in the context of climate change

论文研究：气候变化背景下西洋参 (Panax quinquefolius L.) 人口统计学和种群活力的范围变化研究

基本信息

批准号：
0909862
负责人：
James McGraw
金额：
$ 1.5万
依托单位：
West Virginia University Research Corporation
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2009
资助国家：
美国
起止时间：
2009-05-01 至 2011-04-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0909862&HistoricalAwards=false
关键词：
DISSERTATION RESEARCH Examination range wide

项目摘要

Accurate projections of species response to climate change are necessary to develop successful conservation strategies for the next century. This research will examine variation in population growth of American ginseng (Panax quinquefolius) in response among-year climate variation, and use this information to predict the viability of ginseng populations under future climatic conditions. In particular, the principal investigators will examine whether adaptation to local climate limits the ability of ginseng to respond to climate change. A long-term (7 - 10 year), demographic dataset from across ginseng's natural range will be used to detect patterns of population response to climate variation, and form the basis for models that predict future population viability. Field and laboratory experiments will be used to test for local adaptation to climate. If populations of ginseng are adapted to local climate, then the directional temperature increases projected for the next century may negatively affect all populations throughout the range of this economically important plant.American ginseng is the United States' premier wild-harvested medicinal plant species, generating important supplemental income for Appalachian families. Climate change threatens to negatively impact this valuable natural resource as well as other similar species. Developing models of population viability in response to climate change will ultimately serve as the foundation for effective conservation and management strategies in the context of global warming.

准确预测物种对气候变化的反应对于下个世纪制定成功的保护策略是必要的。本研究将研究西洋参种群生长对气候变化的响应，并利用这些信息预测未来气候条件下西洋参种群的生存能力。特别是，主要研究人员将研究对当地气候的适应是否限制了人参对气候变化的反应能力。一个长期（7 - 10年）的人口统计数据集将用于检测人口对气候变化的响应模式，并形成预测未来人口生存能力的模型的基础。田间和实验室试验将用于测试当地对气候的适应。如果人参种群适应当地气候，那么下个世纪预测的定向温度升高可能会对这种重要经济植物的所有种群产生负面影响。西洋参是美国最重要的野生药用植物，为阿巴拉契亚地区的家庭带来了重要的补充收入。气候变化威胁到这种宝贵的自然资源以及其他类似物种的负面影响。发展应对气候变化的人口生存能力模型最终将成为全球变暖背景下有效保护和管理战略的基础。