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The study aims to examine how climate drivers affect microbial community composition in northern peatlands.

June 17, 2026ISME CommunicationsOpen Access

Porewater microbial community dynamics act as an indicator of northern peatland ecosystem change in response to climate drivers

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Randomized trial examines how climate drivers impact microbial communities in northern peatlands, suggesting critical insights for carbon management.

The study aims to examine how climate drivers affect microbial community composition in northern peatlands.
Utilized the SPRUCE experiment to simulate temperature increases from 0°C to +9°C and elevated CO₂ levels.
Analyzed microbial community diversity and composition at various depths (0–200 cm) in peat and porewater habitats using SSU rRNA amplicon sequencing.
Compared attached (peat) and free-living (porewater) microbial assemblages.
Porewater microbial communities displayed higher diversity, lower abundance, and more responsiveness to warming and CO₂ treatments than peat communities.
Methanotrophs were more abundant in porewater than in peat at deeper depths, with warming stimulating methanotrophs more significantly.
Distinct microbial community dynamics in porewater indicate its potential as a sensitive indicator of environmental change.

Green et al. (2026) studied this question.

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Randomized trial examines how climate drivers impact microbial communities in northern peatlands, suggesting critical insights for carbon management.