Permafrost thaw ponds Targeted Locus (Loci). aquatic metagenome

Microbial assemblages in thaw ponds inhabit highly heterogeneous environments where physico-chemical conditions vary both vertically through the water column and spatially across permafrost regions. Since these microbial communities control biogeochemical processes, and in particular methane balance, understanding factors that influence bacterial community composition and assembly is central for predicting net greenhouse gas emissions from the thawing landscape. The goal of the present study was to investigate the diversity and distribution of potentially active bacterial communities in subarctic thaw lakes across a gradient of limnological conditions and permafrost degradation.

融冻池塘中的微生物群落栖息于高度异质的生境中，其理化条件既随水层垂向发生变化，也因永久冻土区域的空间差异而有所不同。由于此类微生物群落调控着生物地球化学过程，尤其是甲烷平衡，因此阐明影响细菌群落组成与装配过程的关键因素，是预测解冻景观净温室气体排放的核心任务。本研究旨在探究沿湖沼学条件与永久冻土退化梯度分布的亚北极融冻湖泊中，潜在活性细菌群落的多样性与分布特征。