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克雷格·特威迪（Craig Tweedie）将确定在过去25年或更长时间内，北极高陆地生态系统的关键结构和功能特征如何发生变化，并预测这种变化是否可能继续进行。 PI将在国际回到未来项目（IPY项目＃214）中发挥主导作用。 他将建立一个重点的国际，重新回到未来的协调和Invormation Web门户网站；救援数据并重新建立和重新样本四个公主源生态研究站点，包括阿拉斯加巴罗附近的国际生物学计划（IBP）地点，北极陆地生态系统的研究（速率）地点（阿拉斯加阿拉斯加阿拉斯加附近的北极陆地生态系统（速率）地点），以及两个知名和尊敬的工厂生态学家（帕特·帕特（Pate）居民，帕特克（Pat）居民，帕特克（Pate）居民（PATIN）居民（ （西格陵兰）； 并协调两个国际回到未来的综合会议。 日期将在国家SCNOW和ICE数据中心（NSDIC）归档以进行公开访问。 Studenst将协助重新采样历史研究站点，并在Webber和Callaghan的指导下获得动手研究经验，因为后者重新样本了自己的博士学位。在建立大约40年的研究中，该项目将阐明北极多种土地覆盖类型的际阶段生态系统变化；根据遥感验证和改善环境变化的模型；评估全球变化对生态系统结构和功能的影响，包括北极植物生物多样性；并改善北极地区土地和大气子系统之间的知识反馈机制。毕业生，研究生和博士后研究员将接受培训和指导。 这些学生将受到开拓和成就的北极研究人员的指导。