Methanogenesis rate measurements from experimental incubations testing the impact of pressure, methane concentration and temperature on methane cycling

These data investigated the effects of environmental factors on the production of methane in marine sediment, by quantifying and comparing the methanogenesis rates from different 14C-labeled substrates in nearshore and offshore seep sediments of northern Gulf of Mexico. The dataset reports geochemistry of the study sites, the turnover rates and methanogenesis rates from bicarbonate, acetate, methanol and methylamine under a series of experimental conditions. Experimental treatments included changes to methane concentration, pressure, temperature. Incubations were also performed in the presence of inhibitory compounds. Site geochemical data used to calculate rate measurements from sites GC600 and GC767 are associated with GRIIDC dataset R4.x268.000:0003.

本数据集通过定量对比墨西哥湾北部近岸与离岸渗逸沉积物中不同14C标记底物的产甲烷速率，探究了环境因子对海洋沉积物甲烷生成过程的影响。本数据集收录了研究站位的地球化学特征数据，以及碳酸氢盐、乙酸盐、甲醇与甲胺四类底物在一系列实验条件下的周转速率与产甲烷速率。实验处理涵盖甲烷浓度、压力与温度的变量调控，同时还开展了添加抑制性化合物的培养实验。用于计算GC600与GC767站位速率测量值的地球化学资料，关联至GRIIDC数据集R4.x268.000:0003。