Impact of River Channel Lateral Migration on Microbial Communities across a Discontinuous Permafrost Floodplain.

ABSTRACT: Permafrost soils store approximately twice the amount of carbon currently present in Earth's atmosphere and are acutely impacted by climate change due to the polar amplification of increasing global temperature. Many organic-rich permafrost sediments are located on large river floodplains, where river channel migration periodically erodes and redeposits the upper tens of meters of sediment. Channel migration exerts a first-order control on the geographic distribution of permafrost and floodplain stratigraphy and thus may affect microbial habitats. To examine how river channel migration in discontinuous permafrost environments affects microbial community composition, we used amplicon sequencing of the 16S rRNA gene on sediment samples from floodplain cores and exposed riverbanks along the K

SUBMITTER: Douglas MM 

PROVIDER: S-EPMC8478453 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature