LTREB Renewal: Population Growth and Viability of American Ginseng (Panax quinquefolius L.)

LTREB 更新：西洋参 (Panax quinquefolius L.) 的种群增长和活力

• 批准号: 1118702
• 负责人: James McGraw
• 金额: $ 45万
• 依托单位: West Virginia University Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-15 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1118702&HistoricalAwards=false
• 关键词: LTREB; Renewal; Population; Growth; Viability

American ginseng is a widespread, but uncommon to rare, understory plant of the eastern broadleaf forests of North America, and serves as an excellent model for rare species more generally. Plant censuses were begun in 1998 on a set of ginseng populations in a diverse array of environments to address important ecological questions regarding the effects of overbrowsing, invasive species, landscape change, climate change, and commercial harvest on population sustainability. The current award extends long-term data collection for American ginseng. Mathematical models based on census data will be developed to project long-term population growth and viability in response to infrequent events (either detrimental or beneficial); the tradeoff between directional change and stochastic variation; synchronicity of demographic patterns over space; and the likelihood of extinction of small populations. These phenomena typify vexing problems that cannot be addressed from typical short-term studies or studies of a limited sample of populations.The project has diverse broader impacts. Roots of this culturally and economically important plant are harvested from the wild by rural Appalachian residents to supply the Asian traditional medicine market, and contribute to the local economy. Student training opportunities will be offered annually to support career development of young scientists. Census data will be shared with the scientific community, and linkages with the U. S. Fish and Wildlife Service provide direct policy input annually. Finally, a public web site will be updated regularly to explain the research effort and its principal findings.

西洋参是北美东部阔叶林的一种广泛分布但罕见的林下植物，并且更普遍地作为稀有物种的极好模型。 1998年开始对不同环境中的一组人参种群进行植物普查，以解决有关过度浏览，入侵物种，景观变化，气候变化和商业收获对种群可持续性的影响的重要生态问题。 目前的奖项扩展了西洋参的长期数据收集。将根据人口普查数据建立数学模型，以预测人口的长期增长和生存能力，以应对不经常发生的事件（有害或有益）;方向变化和随机变化之间的权衡;空间人口模式的同步性;以及小种群灭绝的可能性。 这些现象是典型的令人烦恼的问题，无法通过典型的短期研究或对有限人群样本的研究来解决。该项目具有多种更广泛的影响。 阿巴拉契亚农村居民从野外收获这种具有重要文化和经济意义的植物的根，供应亚洲传统医药市场，并为当地经济做出贡献。每年将提供学生培训机会，以支持青年科学家的职业发展。 人口普查数据将与科学界共享，并与美国政府建立联系。S.渔业和野生动物局每年提供直接的政策投入。 最后，将定期更新一个公共网站，解释研究工作及其主要结果。