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Title: Marine microbial community responses related to wetland carbon mobilization in the coastal zone

Journal Article · · Limnology and Oceanography Letters
DOI:https://doi.org/10.1002/lol2.10101· OSTI ID:1484390
ORCiD logo [1];  [2];  [3];  [4];  [5]; ORCiD logo [6];  [7]
  1. Marine Sciences Laboratory Pacific Northwest National Laboratory Sequim Washington, School of Oceanography University of Washington Seattle Washington
  2. Department of Geological Sciences University of Florida Gainesville Florida, Soil &, Water Sciences Department University of Florida Gainesville Florida
  3. Geochemical and Environmental Research Group Texas A&,M University College Station Texas, Environmental Molecular Sciences Laboratory Pacific Northwest National Laboratory Richland Washington
  4. Environmental Molecular Sciences Laboratory Pacific Northwest National Laboratory Richland Washington
  5. Soil &, Water Sciences Department University of Florida Gainesville Florida, Whitney Laboratory for Marine Bioscience University of Florida St. Augustine Florida
  6. Soil &, Water Sciences Department University of Florida Gainesville Florida
  7. Department of Geological Sciences University of Florida Gainesville Florida
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Here we examine how marine microbial communities respond when dissolved organic matter (DOM) is mobilized from coastal wetlands. Biological transformations of this DOM may increase in the presence of reactive substrates, such as algal-derived DOM (ADOM) in the coastal zone—a process known as priming. We performed laboratory experiments examining transformations of DOM derived from coastal wetland peat (PDOM) with and without the presence ADOM. Associated shifts in microbial community composition and functional gene abundance were measured to evaluate mechanisms of priming effects. ADOM presence stimulated CO2 production when compared to the seawater control, which was further enhanced in the co-presence of PDOM. DOM characterization showed a substantial difference in features present at the end of the incubation when PDOM was present with and without ADOM, while metagenomic sequencing indicated shifts in microbial community composition and identified 23 unique functional genes associated with pathways for the breakdown of aromatic compounds.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
DE‐AC05‐76RL01830; AC05-76RL01830
OSTI ID:
1484390
Alternate ID(s):
OSTI ID: 1484391; OSTI ID: 1572977
Report Number(s):
PNNL-SA-134462
Journal Information:
Limnology and Oceanography Letters, Journal Name: Limnology and Oceanography Letters Vol. 4 Journal Issue: 1; ISSN 2378-2242
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

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Related Subjects

59 BASIC BIOLOGICAL SCIENCES
aquatic
bacteria
biogeochemistry
biology
blue carbon
carbon cycling
carbon dioxide
climate change
coastal
continuum
cycling
decomposition
dissolved organic carbon
ecosystem
ecotone
erosion
estuarine
exoenzyme
genomic
gradients
interface
marsh
metabalomic
metabolite
metagenome
microbes
microbial
organic matter
organic carbon
oxidation
priming
respiration
stable isotope
sequestration
terrestial aquatic interface
tidal
wetland
wetland soils