IPY Back to the Future (BTF): Re-sampling old research sites to assess change in high latitude terrestrial ecosystem structure and function

IPY回到未来（BTF）：对旧研究地点重新采样以评估高纬度陆地生态系统结构和功能的变化

• 批准号: 0732885
• 负责人: Craig Tweedie
• 金额: $ 74.77万
• 依托单位: University of Texas at El Paso
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0732885&HistoricalAwards=false
• 关键词: IPY; Back; Future; BTF; Re

Craig Tweedie of the University of Texas at El Paso will determine how key structural and functional characteristics of high latitude terrestrial ecosystems in the Arctic have changed over the past 25 or more years and predict whether such changes are likely to continue. The PI will play a leading role in the international Back to the Future project (IPY project #214). He will establish a focused international Back to the Future coordination and invormation web portal; rescue data and re-establish and re-sample four princicpal ecological study sites including the International Biological Program (IBP) site near Barrow, Alaska, the Research in Arctic Terrestrial Ecosystems (RATE) site near Atqasuk, Alaska, and the PhD dissertation sites of two well known and respected Arctic plant ecologists, Pat Webber (Central Baffin Island) and Terry Callaghan, Disko Island (West Greenland); and coordinate two international Back to the Future synthesis meetings. Date will be archived for open access at the National Scnow and Ice Data Center (NSDIC). Studenst will assist in re-sampling historical research sites and gain hands-on research experience under the mentorship of Webber and Callaghan as the latter re-sample sites of their own Ph.D. research approximately 40 years after they were established.The project will elucidate decadal scale ecosystem changes in multiple land cover types across the Arctic; validate and improve models of environmental change based on remote sensing; assess the impact of global change on ecosystem structure and function including arctic plant biodiversity; and improve our knowledge feedback mechanisms between land and atmospheric subsystems of the arctic.Undergratuate students, a graduate student, and a postdoctoral fellow will be trained and mentored at a leading minority serving institution. The students will be mentored by pioneering and accomplished Arctic researchers.

德克萨斯大学埃尔帕索分校的 Craig Tweedie 将确定北极高纬度陆地生态系统的关键结构和功能特征在过去 25 年或更长时间里发生了怎样的变化，并预测这种变化是否可能持续下去。 PI 将在国际“回到未来”项目（IPY 项目#214）中发挥主导作用。 他将建立一个重点突出的国际“回到未来”协调和信息门户网站；救援数据并重新建立和重新采样四个主要生态研究地点，包括阿拉斯加巴罗附近的国际生物计划（IBP）地点、阿拉斯加阿特卡苏克附近的北极陆地生态系统研究（RATE）地点以及阿拉斯加的博士论文地点两位著名且受人尊敬的北极植物生态学家帕特·韦伯（Pat Webber，中央巴芬岛）和特里·卡拉汉（Terry Callaghan，迪斯科岛（西格陵兰））； 并协调两次国际回到未来综合会议。 日期将被存档以供在国家冰雪数据中心（NSDIC）开放访问。 学生将协助对历史研究地点进行重新采样，并在韦伯和卡拉汉的指导下获得实践研究经验，因为后者对自己的博士学位进行了重新采样。该项目成立约 40 年后进行了研究。该项目将阐明北极地区多种土地覆盖类型的十年尺度生态系统变化；验证和改进基于遥感的环境变化模型；评估全球变化对生态系统结构和功能（包括北极植物生物多样性）的影响；并改善北极陆地和大气子系统之间的知识反馈机制。本科生、研究生和博士后将在领先的少数族裔服务机构接受培训和指导。 学生们将受到具有开拓性和成就的北极研究人员的指导。