UK Ocean Acidification flume mesocosm data quantifying the response of sediment microbial communities and N-cycling functional guilds to high CO2.

A custom-built flume (mesocosm) facility was used to manipulate CO2 and temperature in order to test the impacts of seawater acidification and warming on microbial taxonomic marker and nitrogen cycling-gene abundances in both muddy and sandy coastal sediments. Experimental treatment levels contained representatives of present day CO2 and temperature levels and of those expected by 2100 under a 'business-as-usual' scenario (IPCC, 2007), with an emphasis on the interactive effects of reduced pH and increased sea water temperature on benthic microorganisms.

本研究采用定制水槽（中宇宙，mesocosm）装置调控CO₂浓度与温度，旨在测试海水酸化和升温对泥质及砂质海岸沉积物中微生物分类标记物及氮循环基因丰度的影响。实验处理水平涵盖现今CO₂浓度与温度水平的代表组，以及政府间气候变化专门委员会（IPCC，2007）‘一切照旧’情景下2100年预期的水平组，重点探究pH降低与海水温度升高对底栖微生物的交互作用。