Paleoecology of Western Canada: vegetation dynamics and paleoclimate during the Quaternary and Eocene.

加拿大西部的古生态学：第四纪和始新世期间的植被动态和古气候。

• 批准号: 3835-2013
• 负责人: Mathewes, Rolf
• 金额: $ 1.97万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=544147
• 关键词: Paleoecology; Western; Canada; vegetation; dynamics

My research program aims to reconstruct patterns of change in vegetation and ecosystem structure in Western Canada, and to use this information to assess how environmental factors, in particular, climate, are responsible for those changes. Within this framework, we are focusing on several research topics. The first area of study is the glacial and biological history of Haida Gwaii (the Queen Charlotte Islands), also known as the "Canadian Galapagos." The origin of the unique fauna and flora of the Haida Gwaii is controversial, and centres on glacial history and the likely existence of glacial refuges during the last and previous glaciation. Prior to the last glacial maximum (~20,000 years ago), there was an earlier, larger glaciation that is too old to study by radiocarbon dating methods. We will use new dating techniques and employ pollen and plant fossils on Graham Island to reconstruct plant communities and climatic conditions, and to understand the effects of climate change and disturbance on plant survival and local extinction.

我的研究项目旨在重建加拿大西部植被和生态系统结构的变化模式，并利用这些信息来评估环境因素，特别是气候，是如何造成这些变化的。在这个框架内，我们专注于几个研究课题。研究的第一个领域是海达群岛（夏洛特女王群岛）的冰川和生物历史，也被称为“加拿大加拉帕戈斯”。“海达冰川独特的动物群和植物群的起源是有争议的，其中心是冰川历史以及在最后一次和以前的冰川期可能存在冰川避难所。 在最后一次盛冰期（约20，000年前）之前，有一个更早，更大的冰川，它太古老了，无法用放射性碳测年方法进行研究。 我们将使用新的测年技术，并利用格雷厄姆岛的花粉和植物化石来重建植物群落和气候条件，并了解气候变化和干扰对植物生存和当地灭绝的影响。