Canada Excellence Research Chair in Arctic Geomicrobiology and Climate Change

加拿大北极地球微生物学和气候变化卓越研究主席

基本信息

批准号：
1000214902-2018
负责人：
Rysgaard, Søren
金额：
$ 25.5万
依托单位：
University of Manitoba
依托单位国家：
加拿大
项目类别：
Canada Excellence Research Chairs
财政年份：
2018
资助国家：
加拿大
起止时间：
2018-01-01 至 2019-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=663982
关键词：
Canada Excellence Research Chair Arctic

项目摘要

The CERC research program will focus on geomicrobial transformations as they occur in Arctic sea ice and sediments, including the regeneration of nutrients required by primary producers and thus the health of all other inhabitants of the Arctic marine system. Recent evidence suggests that microbial activity and chemical transformations within sea ice greatly influence inorganic carbonate chemistry, playing a far more important role in regulating carbon dioxide (CO2) uptake by Arctic seas than previously anticipated. The objective of the program is to investigate and quantify the importance of these fundamental microbial activities using state-of-the-art assessment techniques in a comprehensive three-pronged approach of ice tank, in situ, and modelling studies. Combining experimental ice tank and in situ studies will provide important new insight into the regulation of these processes, their seasonal and geographical distribution, and how they are coupled between surface ocean and seafloor. Modelling activities will range from small-scale studies within the sea ice and sediment compartments to local coastal regions of strategic importance and the large-scale systems of the Arctic Ocean and neighbouring seas. This comprehensive effort will markedly improve current knowledge of the magnitude and regulation of microbial activity and biogeochemical processes within the context of their physical/chemical environments. The research has broad economic and environmental impacts as an increased understanding of the microbially mediated nutrient regulation of primary production is a prerequisite to understanding the future for higher organisms in Arctic marine ecosystems and the effects of a changing sea ice environment. The knowledge generated will be applicable to environmental assessment of resource development in the Arctic and the attendant implications for the indigenous peoples of the Arctic. Finally, the sea ice mediated uptake of CO2 will have direct implications on the atmospheric CO2 concentration and thus, temperature conditions on the planet

CERC研究计划将重点放在北极海冰和沉积物中的地球植物转化上，包括主要生产者所需的营养物质的再生以及北极海洋系统所有其他居民的健康。最近的证据表明，海冰内的微生物活性和化学转化极大地影响了无机碳酸盐化学，在北极海域调节二氧化碳（CO2）的摄入量比先前预期的重要作用要重要得多。该计划的目的是使用最先进的评估技术在综合三方面的冰罐方法，原位和建模研究中调查和量化这些基本微生物活动的重要性。结合实验冰箱和原位研究将为这些过程的调节，它们的季节性和地理分布以及它们如何在地面海洋和海底之间耦合提供重要的新见解。建模活动的范围从海冰和沉积物室内的小规模研究到战略重要性的当地沿海地区以及北极海洋和邻近海洋的大规模系统。这项全面的努力将显着提高当前对微生物活性和生物地球化学过程在物理/化学环境中生物地球化学过程的了解。这项研究具有广泛的经济和环境影响，因为人们对初级生产的微生物介导的营养调节的了解是了解北极海洋生态系统中较高生物的未来的前提，以及不断变化的海冰环境的影响。所产生的知识将适用于对北极资源开发的环境评估以及对北极土著人民的影响。最后，海冰介导的二氧化碳摄取将直接影响大气二氧化碳浓度，因此，温度条件在地球上