Microbial methane dynamics in subarctic permafrost thaw lakes (Whapmagoostui-Kuujjuarapik, Nunavik)

The dataset has been developed for research quantifying methane (CH4) fluxes from thermokarst lakes over a gradient of permafrost conditions, deemed to identify the key variables determining the spatio-temporal variations of these fluxes. Three coalescing approaches require separate subsets of data: (1) An assessment of spatial variations of thermokarst lakes methane fluxes at multiple ecological scales; (2) An evaluation of spatial variations of CH4 oxidation dynamics in thermokarst lakes, with particular attention to the factors controlling aerobic and anaerobic methanotrophy; (3) An evaluation of CH4 fluxes from the subsets of thermokarst lakes across a spatial gradient of permafrost degradation from continuous to sporadic permafrost. This research project is part of the ADAPT project (Arctic Development and Adaptation to Permafrost in Transition) and can be linked to projects conducted on the same study site (CCIN Reference Number: 11670, 11672, 11673 and 11679).

本数据集专为量化热喀斯特湖（thermokarst lakes）在多年冻土（permafrost）梯度下的甲烷（CH4）通量而研发，旨在识别决定此类通量时空变化的关键变量。本研究包含三类相互关联的研究路径，各自需要独立的数据子集：
（1）多生态尺度下热喀斯特湖甲烷通量空间差异的评估；
（2）热喀斯特湖甲烷氧化动力学空间差异的研究，重点关注调控好氧与厌氧甲烷氧化过程的影响因素；
（3）对横跨连续到零星多年冻土退化梯度的热喀斯特湖子集的甲烷通量进行评估。
本研究项目隶属于ADAPT项目（北极转型期多年冻土的开发与适应，Arctic Development and Adaptation to Permafrost in Transition），可与同一研究区域开展的相关研究项目关联（CCIN 编号：11670、11672、11673及11679）。