Microbial community shifts associated with rapid climate change during the transition between recent geological epochs

最近地质时期之间的过渡期间与快速气候变化相关的微生物群落变化

• 批准号: RGPIN-2017-04807
• 负责人: Lanoil, Brian
• 金额: $ 1.75万
• 依托单位: University of Alberta
• 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=632196
• 关键词: Microbial; community; shifts; associated; rapid

In a 2002 Nature commentary, Paul Crutzen argued that human-driven climate warming has resulted in a shift in geological epochs, from the Holocene (H) to a new epoch dubbed the Anthropocene (A). This shift is at least as dramatic as, if not more so than, the shift about 11,500 years ago from the last ice age (P) to the modern (H). Due to the importance of the cryosphere in regulating high latitude ecosystems, the North is particularly susceptible to climate effects. Furthermore, warming in the Arctic is occurring two to three times faster than the increase in global mean surface temperatures, an effect known as polar amplification. Microorganisms are important drivers in Arctic systems, playing significant roles in nutrient cycling as well as carbon turnover and storage, and are also indicators of ecosystem changes through successional development of microbial community structure. As such, microbial communities can provide insight into changes in both ecosystem function and structure in a changing Northern environment.

在2002年《自然》杂志的一篇评论中，保罗·克鲁岑认为，人类驱动的气候变暖导致了地质时代的转变，从全新世（H）到一个被称为人类世（A）的新时代。这种转变至少与大约11,500年前从最后一个冰河时代（P）到现代（H）的转变一样戏剧性，如果不是更戏剧性的话。由于冰冻圈在调节高纬度生态系统方面的重要性，北方特别容易受到气候影响。此外，北极变暖的速度比全球平均地表温度的上升速度快两到三倍，这种效应被称为极地放大效应。微生物是北极系统的重要驱动力，在营养循环以及碳周转和储存方面发挥着重要作用，也是通过微生物群落结构的演替发展来指示生态系统变化的指标。因此，微生物群落可以提供洞察生态系统功能和结构在不断变化的北方环境中的变化。