EAGER: Intra-seasonal Wood Anatomy to Assess Millennia-long Regional Climate Reconstructions

该项目将执行一项研究战略，以确定树木年轮形成的基本过程，从个体树木水平的年轮形成到景观尺度上植物生长的区域模式。研究人员还将使用现场和遥感观测，结合现场操作，建立气候变化和树木年轮生长的因果关系。该项目建立在EPSCoR资助的名为NEV-CAN(内华达气候-生态水文评估网络)的实地项目的基础上，该项目将利用就地仪器和遥感对大气、土壤和植被变量进行高时间和空间分辨率监测。研究区域是内华达州的绵羊和蛇牧场，那里的主要树木植被是山地针叶树，包括布列斯特林松树，这种树广泛用于利用树轮重建古气候。该提案的更广泛影响包括博士后指导和与活跃在这类工作中的加拿大组织的国际合作。这项研究有可能提高我们对马尾松对气候变化的反应的理解，马尾松是一种提供一些最长和最重要的古气候记录的树。此外，这项工作的结果可能有助于改进对大流域生态系统的风险评估。

This project will execute a research strategy to determine the processes underlying tree ring formation, from the individual tree level tree-ring formation to regional patterns of plant growth at the landscape scale. The researcher will also use field and remote sensing observations, combined with field manipulations, to establish the causal relationships of climate variability and tree ring growth. The project builds on an EPSCOR-funded field program called Nev-CAN (Nevada Climate-Ecohydrological Assessment Network), which will provide high temporal and spatial resolution monitoring of atmospheric, soil and vegetation variables using in place instrumentation and remote sensing. The study areas are the Sheep and Snake Ranges in Nevada, where the primary tree vegetation is mountain conifers, including the Bristlecone pine, a tree used extensively in paleoclimate reconstructions using tree rings.The broader impacts of the proposal include postdoctoral mentoring and an international collaboration with a Canadian group active in this type of work. The study has the potential to improve our understanding of how bristlecone pine, a tree that provides some of the longest and most important paleoclimate records, reacts to climate variability. In addition, the results of this work may contribute to improved risk assessments for Great Basin ecosystems.