Impacts of climatic change and environmental stress on aquatic ecosystems

气候变化和环境压力对水生生态系统的影响

• 批准号: 170043-2008
• 负责人: Pienitz, Reinhard
• 金额: $ 3.06万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=522738
• 关键词: Impacts; climatic; change; environmental; stress

To explore the potential responses of northern freshwater ecosystems and their watersheds to climate change and to place instrumental temperature records into a long-term perspective, we will use a multi-proxy paleolimnological approach to generate detailed paleoclimatic and paleoenvironmental records from lake sediment archives in the eastern Canadian Arctic. These records will be synthesized and the resulting time series analyzed to allow regional comparisons with ice core data from Greenland as well as with paleoceanographic data from surrounding marine environments. Our central objective is to generate a network of decadal-millennial scale records of quantitative variations in limnological parameters that will provide a better understanding of the range of natural environmental variability in northeastern Canada, and allow us to explore fundamental questions concerning postglacial ecosystem succession in northern landscapes.

为了探索北方淡水生态系统及其流域对气候变化的潜在响应，并将仪器温度记录放在长期的角度来看，我们将使用多代理古湖沼学的方法来产生详细的古气候和古环境记录在加拿大北极东部的湖泊沉积物档案。将对这些记录进行综合，并对由此产生的时间序列进行分析，以便与格陵兰的冰芯数据以及周围海洋环境的古海洋学数据进行区域比较。我们的中心目标是产生一个网络的十年-千年尺度记录的湖沼参数的定量变化，这将提供一个更好的了解在加拿大东北部的自然环境变化的范围，并使我们能够探索有关冰后期生态系统演替在北方景观的基本问题。