This research demonstrates how climate warming affects bacterial communities in Arctic lakes, suggesting changes in microbial diversity due to nutrient inputs.
Key Points
To understand how increasing connectivity to terrestrial and marine habitats affects bacterial communities in a High Arctic lake.
Sampled three interconnected habitats: lake, inflowing water over permafrost, and adjacent ice-dammed bay.
Analyzed lake water chemistry to confirm hydrological connectivity with terrestrial environments.
Used 16S rDNA and rRNA sequencing to assess bacterial community composition.
Identified small marine and terrestrial influences on lake bacteria.
Found few shared bacterial phylotypes among the three habitats.
Observed strong environmental filtering by habitat type despite increasing connectivity.
Cite This Study
Blackburn‐Desbiens et al. (2025) studied this question.