Journal
COMMUNICATIONS BIOLOGY
Volume 4, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s42003-021-02731-9
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Funding
- US Department of Energy (DOE) Joint Genome Institute, an Office of Science User Facility - Office of Science of the U.S. Department of Energy [DE-AC02- 05CH11231]
- G. Unger Vetlesen Foundation
- Ambrose Monell Foundation
- Natural Sciences and Engineering Research Council of Canada
- Canada Foundation for Innovation
- Canadian Institute for Advanced Research
- Danish Research Council [DFF-7027-00043B]
- Tula Foundation
- Scientific Committee on Oceanographic Research (SCOR)
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Recent studies have shown that marine heat waves can lead to shifts in prokaryotic community structures, with taxa considered free-living and chemoautotrophic prevailing under these unusual conditions. This shift may have implications for ocean productivity and organic carbon conversion and export.
Recent studies on marine heat waves describe water temperature anomalies causing changes in food web structure, bloom dynamics, biodiversity loss, and increased plant and animal mortality. However, little information is available on how water temperature anomalies impact prokaryotes (bacteria and archaea) inhabiting ocean waters. This is a nontrivial omission given their integral roles in driving major biogeochemical fluxes that influence ocean productivity and the climate system. Here we present a time-resolved study on the impact of a large-scale warm water surface anomaly in the northeast subarctic Pacific Ocean, colloquially known as the Blob, on prokaryotic community compositions. Multivariate statistical analyses identified significant depth- and season-dependent trends that were accentuated during the Blob. Moreover, network and indicator analyses identified shifts in specific prokaryotic assemblages from typically particle-associated before the Blob to taxa considered free-living and chemoautotrophic during the Blob, with potential implications for primary production and organic carbon conversion and export. Traving et al. use small subunit ribosomal RNA gene sequencing to examine spatial and temporal trends in bacterial and archaeal community structure during a large marine warm water surface anomaly, the Blob. Their findings suggest that community structure shifted during the Blob, with taxa considered free-living and chemoautotrophic prevailing under these unusual conditions.
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