A zoogeographic analysis of the thermal and feeding ecology of Artic charr: implications for climate change

北极红点鲑的热和摄食生态学的动物地理学分析：对气候变化的影响

• 批准号: 305450-2010
• 负责人: Power, Michael
• 金额: $ 1.09万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Northern Research Supplement
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=514817
• 关键词: zoogeographic; analysis; thermal; feeding; ecology

Arctic charr and their ecosystems are projected to experience many serious climate change impacts that will directly affect Artcic charr biology at many levels and alter Arctic charr habitats, with follow-on indirect consequences expected to compound the direct biological effects and ultimately cascade to create substantive impacts on important northern fisheries for Arctic charr. Preparedness to meet the challenges of climate change in the north are currently hampered by a critical lack of knowledge about the mechanisms by which climate effects (e.g., increased temperatures) are transmitted to Arctic charr and the ability of Arctic charr to 'adapt' to such effects. Research proposed here will address the identified knowledge gaps by focusing on [1] continued development of the analytical tools necessary for the accurate reconstruction of Arctic charr thermal histories from which [2] relationships between growth and environmental variation may be deduced. Studies will be conducted in a number of northern locations along a north-south gradient, including: Ellesmere and Baffin Islands, Nunavik (northern Quèbec) and Nunatsiavut (Labrador). Information produced by the proposed Arctic charr studies will specifically address knowledge gaps about the impacts of climate change on northern fish as identified in recent international climate impact reports such as the Arctic Climate Impact Assessment. Thus studies will help improve understanding of the functional biological relationships pertinent for driving the patterns of growth variation observed in Arctic charr from a variety of Arctic aquatic ecosystems. Data collected will also help establish critical baselines against which the significance of future changes in Arctic charr populations may be judged. In this way research results will provide information needed for improved scientific management of the charr, thereby assisting both government and northern management agencies charged with the stewardship of Arctic charr resources.

北极Charr及其生态系统预计会遇到许多严重的气候变化影响，这些影响将直接影响许多层次的Artcic Charr生物学，并改变北极Charr栖息地，并有望将直接的生物学效应加剧，并最终导致级联的沿线后果，并最终对北方渔业产生实质性影响。目前，应对北方气候变化的挑战的准备，这是由于对气候影响（例如，温度升高）传播到北极Charr以及北极Charr“适应这种影响”的能力的机制的严重缺乏知识所阻碍。此处提出的研究将通过关注[1]的持续开发北极Charr热历史所需的分析工具来解决所确定的知识差距，从而可以从中可以从中得到[2]在生长与环境变化之间的关系。研究将在许多南北梯度中进行，包括：Ellesmere和Baffin群岛，Nunavik（北奎贝克）和Nunatsiavut（Labrador）。拟议中的北极Charr研究产生的信息将特别解决有关气候变化对北鱼的影响的知识差距，如最近的国际气候影响报告（例如北极气候影响评估）所述。了解与推动各种北极水生生态系统中北极Charr中观察到的生长变化模式有关的功能生物学关系。收集到的数据还将有助于建立关键的基线，以此对北极Charr人群的未来变化的重要性进行判断。通过这种方式，研究结果将提供改善Charr科学管理所需的信息，从而协助政府和北方管理机构负责管理北极Charr资源的管理。