Microbial Diversity and Biogeography of the Canada Basin and Beaufort Gyre 20122019

As part of the Beaufort Gyre Exploration Project (https://www.whoi.edu/website/beaufortgyre/), the Canada Basin has been surveyed since 2003 because of its major role in circulation and freshwater storage in the world oceans. Due to climate change, it has also been subject to major changes in ice extent and freshwater balance. Our surveys of microbial communities in this system from 2012-2019 are intended to characterize the biological response to these changes and their potential consequences in carbon cycling. Stations corresponded to the ones used by the long term time series of ocean circulation, and are arranged into transects from nearshore to offshore.

作为博福特环流探索项目（Beaufort Gyre Exploration Project，https://www.whoi.edu/website/beaufortgyre/）的组成部分，加拿大海盆（Canada Basin）自2003年起便被纳入勘测范围，因其在全球海洋环流与淡水储存中发挥着关键作用。受气候变化影响，该区域的海冰范围与淡水平衡均发生了显著变化。本研究团队于2012至2019年间对该系统内的微生物群落开展勘测工作，旨在表征其对上述变化的生物响应，以及这些变化在碳循环中存在的潜在效应。本次勘测所采用的站位与长期海洋环流时间序列所使用的站位一致，并按照从近岸到远海的断面进行布设。