Ice-Proximal Paleoclimates at the Wisconsin-Holocene Transition-Paleoentomology

昆虫化石是第四纪环境的可靠、敏感的指示物，对描绘快速气候变化的间隔具有特别的价值。在北美，许多研究集中在冰近端地点的威斯康辛-全新世过渡。本研究的目的是利用互气候差（Mutual Climate Range， MCR）方法对北美的化石甲虫古气候重建进行综合和量化。这是一种定量分析昆虫化石数据的方法，通过建立化石组合中每个物种的现代气候范围。MCR分析将应用于北美所有已发表的近冰晚期威斯康辛昆虫记录，并将用于校准现有数据，以提供主要地区的温度等压线图。MCR结果将与欧洲动物群建立的结果和基于孢粉学的北美重建结果进行比较。

Insect fossils are reliable, sensitive indicators of Quaternary environments, and are especially valuable for delineating intervals of rapid climate change. In North America, many studies have focused on the Wisconsin-Holocene transition at ice-proximal sites. The aim of this research is to synthesize and quantify fossil beetle paleoclimate reconstructions for North America, using the Mutual Climate Range (MCR) method. This is a quantitative method of analyzing the insect fossil data by establishing the modern climate range for each species in a fossil assemblage. MCR analyses will be applied to all published ice-proximal late Wisconsin insect records in North America, and will be used to calibrate the existing data to provide temperature isobar maps for major regions. The MCR results will be compared with those established for European faunas and with North American reconstructions based on palynology.