{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T10:40:37Z","timestamp":1789814437875,"version":"4.0.1"},"reference-count":84,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2025,11,10]],"date-time":"2025-11-10T00:00:00Z","timestamp":1762732800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Microbiol."],"abstract":"<jats:p>\n                    Arctic systems are warming at four times the global average, causing permafrost\u2014permanently frozen soil, ice, organic matter, and bedrock\u2014to thaw. Permafrost thaw exposes previously unavailable soil carbon and nutrients to decomposition\u2014a process mediated by microbes\u2014which releases greenhouse gases such as carbon dioxide and methane into the atmosphere. While it is well established that thaw alters the composition and function of the permafrost microbiome, patterns revealing common responses to thaw across different permafrost soil types have not yet emerged. In this study, we address how permafrost thaw impacts microbiome diversity, alters species abundance, and contributes to carbon flux in the Arctic. We sampled peat-like, mineral, and organic-mineral permafrost from three locations in central and northern Alaska. We assessed their abiotic soil properties and microbiome characteristics before and after a 3-month laboratory microcosm incubation. Across all sites, prokaryotic biomass increased following thaw, measured as 16S rRNA gene copy number. This change in biomass was positively correlated with cumulative respiration, indicating an increase in microbial activity post-thaw. We evaluated the thaw response of microbial taxa across three sites, identifying taxa that significantly increased in abundance post-thaw. Common responders shared across all sites belonged to the families\n                    <jats:italic>Beijerinckiaceae<\/jats:italic>\n                    ,\n                    <jats:italic>Burkholderiaceae<\/jats:italic>\n                    ,\n                    <jats:italic>Clostridiaceae<\/jats:italic>\n                    ,\n                    <jats:italic>Oxalobacteraceae<\/jats:italic>\n                    ,\n                    <jats:italic>Pseudomonadaceae<\/jats:italic>\n                    , and\n                    <jats:italic>Sporichthyaceae<\/jats:italic>\n                    , indicating a common set of taxa that consistently respond to thaw regardless of site-specific conditions. Alpha diversity decreased with thaw across all sites, likely reflecting the increased dominance of specific thaw-responsive taxa that may be driving post-thaw biogeochemistry and increased respiration. Taken together, we deepen the understanding of different permafrost microbiomes and their response to thaw, which has implications for the permafrost\u2013climate feedback and enables more accurate predictions of how Arctic ecosystem structure and function respond to change.\n                  <\/jats:p>","DOI":"10.3389\/fmicb.2025.1654065","type":"journal-article","created":{"date-parts":[[2025,11,10]],"date-time":"2025-11-10T22:38:22Z","timestamp":1762814302000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":3,"title":["Consistent microbial responses during the aerobic thaw of Alaskan permafrost soils"],"prefix":"10.3389","volume":"16","author":[{"given":"Joy M.","family":"O\u2019Brien","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nathan D.","family":"Blais","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hannah","family":"Holland-Moritz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katherine L.","family":"Shek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas A.","family":"Douglas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robyn A.","family":"Barbato","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jessica Gilman","family":"Ernakovich","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2025,11,10]]},"reference":[{"key":"ref160","doi-asserted-by":"publisher","DOI":"10.2307\/1165312","article-title":"On the adaptive control of the false discovery rate in multiple testing with independent statistics","author":"Benjamini","year":"2000","journal-title":"J. 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