Late Quaternary Vegetational and Climatic History of South- western Alaska

最近的孢粉学研究产生了详细的区域性 白令海东北部（北方）的植被历史 阿拉斯加和加拿大西北部）。 这些比较 古气候模型的历史引发了疑问 区域空间和时间格局的报告 第四纪气候与植被变化。 该奖项将支持一项调查，以收集和 分析了8个湖泊沉积物柱样的花粉含量， 阿拉斯加西南部，解释晚第四纪 植被和气候的历史，并比较 把这些历史传给白令吉亚其他地区的人 植被历史将根据物种描述 现代和化石的生态学和统计学比较 花粉光谱 响应面分析和 指示分类群的个体生态学要求将用于 从花粉记录中推断出过去的气候， 解释将与计算机模拟进行比较。

Recent palynological research has produced detailed regional vegetation histories for northeastern Beringia (northern Alaska and northwestern Canada). Comparisons of these histories with paleoclimate models raise questions concerning regional spatial and temporal patterns of late Quaternary climate and vegetation change. This award will support an investigation to collect and analyze the pollen content of 8 lake sediment cores from southwestern Alaska, interpret the late Quaternary vegetation and climate history of this region, and compare these histories to those from other regions of Beringia. The vegetation history will be described based on species ecologies and statistical comparison of modern and fossil pollen spectra. Response surface analyses and autecological requirements of indicator taxa will be used to infer past climate from the pollen records, and these interpretations will be compared to computer simulations.