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

德克萨斯大学埃尔帕索分校的克雷格·特威迪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年或更长时间内发生了怎样的变化，并预测这种变化是否可能持续下去。国际和平协会将在国际回归未来项目(IPY项目#214)中发挥主导作用。他将建立一个重点关注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站点，包括阿拉斯加巴罗附近的国际生物计划(IBP)站点、阿拉斯加阿特卡苏克附近的北极陆地生态系统研究(RATE)站点以及两位著名和受人尊敬的北极植物生态学家Pat Webber(中央巴芬岛)和Terry Callaghan(西格陵兰岛)的博士论文站点；以及协调两次国际Back the Future综合会议。数据将在国家冰雪数据中心(NSDIC)存档，供开放使用。在Webber和Callaghan的指导下，Studenst将协助重新采样历史研究地点，并在他们自己的博士研究约40年后的后者重新采样。该项目将阐明北极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；评估全球变化对包括北极植物生物多样性在内的生态系统结构和功能的影响；并改进我们在北极陆地和大气子系统之间的知识反馈机制。未获许可的学生、研究生和博士后将在一家领先的少数族裔服务机构接受培训和指导。这些学生将得到开拓性和有成就的北极研究人员的指导。

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.