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

威斯康星州-全新世过渡时期的近冰古气候-古昆虫学

• 批准号: 9219040
• 负责人: Scott Elias
• 金额: $ 20.33万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-15 至 1997-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219040&HistoricalAwards=false
• 关键词: Ice; Proximal; Paleoclimates; Wisconsin; Holocene

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.

昆虫化石是第四纪环境的可靠、灵敏的指示器，对于描述快速气候变化的间隔特别有价值。在北美，许多研究都集中在威斯康星州-全新世冰缘遗址的过渡上。这项研究的目的是利用相互气候极差(MCR)方法来合成和量化北美的甲虫化石古气候重建。这是一种通过建立化石组合中每个物种的现代气候范围来分析昆虫化石数据的量化方法。MCR分析将应用于北美所有已公布的威斯康星州晚期冰层昆虫记录，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结果将与为欧洲动物群建立的结果和北美基于孢粉学的重建结果进行比较。