Late Quaternary environmental and climatic changes in the eastern North Pacific

北太平洋东部晚第四纪环境和气候变化

• 批准号: RGPIN-2015-06388
• 负责人: Pospelova, Vera
• 金额: $ 1.6万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633835
• 关键词: Late; Quaternary; environmental; climatic; changes

Understanding of mechanisms behind climate change, and its influence on Earth’s ecosystems is an important and challenging scientific task. My work is motivated by fundamental questions: how changing climate impacts coastal environments, how past abrupt climatic changes affected marine primary productivity, and how to reliably extract quantitative information on paleoenvironments from marine sediments. The long-term objective of my research program is to calibrate microfossils (primarily dinoflagellate cysts) as biological proxies of environmental conditions in coastal waters, and to advance high-resolution (paleo) environmental reconstructions in the late Quaternary. More specifically, my research is based on the identification of organic-walled microscopic organisms: primarily dinoflagellate cysts, as well as pollen, spores, and foraminiferal organic linings in sediments. These microfossils are well preserved in sediments, and their records contain information about environmental conditions at the time of deposition, which will be used to investigate sea-surface conditions, ocean circulation, climate, and marine primary productivity both now and in the geological past.

了解气候变化背后的机制及其对地球生态系统的影响是一项重要且具有挑战性的科学任务，我的工作源于一些基本问题：气候变化如何影响沿海环境，过去的气候突变如何影响海洋初级生产力，以及如何可靠地影响海洋初级生产力。我的研究计划的长期目标是校准 microfos 定量 sils（主要是甲藻包囊）作为沿海水域环境条件的生物指标，并推进更具体地说，我的研究基于有机壁微生物的识别：主要是甲藻包囊，以及沉积物中的花粉、孢子和有孔虫有机内层。沉积物中保存完好，其记录包含沉积时的环境条件信息，可用于调查海面状况、海洋环流、气候和海洋初级生产力现在和地质过去。