Collaborative Research: High-Resolution, Multi-Species Reconstructions of Greater Yellowstone Region Paleoclimates Using Tree-Ring Anatomy

合作研究：利用树木年轮解剖学对大黄石地区古气候进行高分辨率、多物种重建

• 批准号: 2303479
• 负责人: Maegen Rochner
• 金额: $ 41.75万
• 依托单位: University of Louisville Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-07-01 至 2026-06-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2303479&HistoricalAwards=false
• 关键词: Collaborative; Research; Resolution; Multi; Species

This project aims to perform a millennial-length, multi-metric synthesis of sub-annual paleoclimate and extreme events in the Greater Yellowstone Ecoregion (GYE) through the use of tree-ring methodologies. The researchers will: (1) generate millennial-length chronologies of quantitative wood anatomy (QWA) metrics from two co-occurring subalpine/treeline tree species; (2) produce regional, millennial-length reconstructions of sub-annual temperature variability; and (3) analyze connections between climate variability and external forcings. The creation of a millennial-length climate history derived from QWA metrics may provide new insights into important high-elevation ecosystems of the western United States (U.S.) and further contextualize climate change for the GYE. Analysis between reconstructed sub-annual temperature data with currently available reconstruction and model data will aid understanding of complex climate interrelationships for the GYE and the western U.S. more broadly and inform assessments of current and future conditions.Information generated by this research will aid local, national, and international climatologists, conservation biologists, and land managers to better predict future climate change impacts for the GYE and western U.S. more broadly and provide data to the Whitebark Pine Ecosystem Foundation (WPEF), U.S. Forest Service, and other governmental and non-governmental agencies that have interest in whitebark-specific responses to climate change and ecological disturbance. The potential Broader Impacts (B.I.) include support for the careers of several early-career female scientists as well as resources toward undergraduate education, K-12 activities, and community engagement. The project provides opportunities for scientific education and training through mentorship, independent and summer research programs, and community outreach, collaboration, and education, including programs including the North American Dendroecological Fieldweek, the University of Idaho K-12 STEM outreach program, and the Kentucky Academy of Science.The research will also help contextualize over 1,000 years of climate variability and anomalies in the Greater Yellowstone Ecoregion (GYE) and provide insight into intra-annual variability and responses to climatological and ecological disturbance events, thereby informing future regional- and large-scale climate models and additional GYE research questions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目旨在通过使用树木年轮方法对大黄石生态区（GYE）的亚年度古气候和极端事件进行千年长度的多指标综合。研究人员将：（1）从两种同时存在的亚高山/林线树种中生成千年长度的定量木材解剖学（QWA）指标年表； (2) 对亚年温度变化进行区域性、千年长度的重建； (3) 分析气候变化与外部强迫之间的联系。根据 QWA 指标创建长达千年的气候历史可能会为美国西部重要的高海拔生态系统提供新的见解，并进一步了解 GYE 的气候变化背景。对重建的亚年温度数据与当前可用的重建和模型数据进行分析将有助于更广泛地理解 GYE 和美国西部复杂的气候相互关系，并为当前和未来状况的评估提供信息。这项研究产生的信息将帮助地方、国家以及国际气候学家、保护生物学家和土地管理者，以更好地预测未来气候变化对 GYE 和美国西部更广泛的影响，并向白皮松生态系统基金会提供数据(WPEF)、美国林务局以及其他对白皮树应对气候变化和生态干扰感兴趣的政府和非政府机构。潜在的更广泛影响 (B.I.) 包括对几位早期职业女性科学家的职业生涯的支持以及本科教育、K-12 活动和社区参与的资源。该项目通过指导、独立和夏季研究项目以及社区外展、合作和教育提供科学教育和培训的机会，包括北美树生态实地周、爱达荷大学 K-12 STEM 外展项目和肯塔基州该研究还将帮助了解大黄石生态区 (GYE) 1000 多年来的气候变化和异常情况，并深入了解年内变化和对气候变化的响应该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。