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Related Experiment Video

Updated: May 8, 2026

Deployment and Retrieval of Mineral Samplers
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Published on: January 20, 2026

Temporal changes in particle-associated microbial communities after interception by nonlethal sediment traps.

Gary R LeCleir1, Jennifer M DeBruyn, Elizabeth W Maas

  • 1Department of Microbiology, The University of Tennessee, Knoxville, TN, USA.

FEMS Microbiology Ecology
|September 12, 2013
PubMed
Summary
This summary is machine-generated.

Marine sediment traps revealed that Roseobacters rapidly colonize sinking particles within 24 hours. Particle origin did not significantly impact the degrading bacterial communities, highlighting rapid microbial succession on marine aggregates.

Keywords:
DNA sequencingmarine bacteriamarine snowsediment traps

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Published on: April 19, 2018

Area of Science:

  • Marine microbiology
  • Oceanography
  • Biogeochemistry

Background:

  • Marine aggregates are crucial for carbon export and nutrient cycling.
  • Understanding microbial colonization of sinking particles is key to marine ecosystem dynamics.

Purpose of the Study:

  • To investigate microbial community composition on sinking marine aggregates.
  • To compare particle-associated bacteria with free-living planktonic communities.
  • To determine the timescale of microbial community changes on aggregates.

Main Methods:

  • In situ collection of marine aggregates using sediment traps (RESPIRE).
  • Incubation of collected aggregates and water column samples.
  • Phylogenetic analysis of microbial communities via 16S rRNA gene pyrosequencing.

Main Results:

  • Distinct bacterial communities were found between sediment traps and water column samples.
  • Roseobacter clade members, particularly Sulfitobacter sp., were abundant early colonizers of aggregates.
  • Significant microbial community shifts occurred within 24 hours of aggregate collection.

Conclusions:

  • Roseobacters are rapid colonizers of marine aggregates on short timescales.
  • Aggregate origin appears insignificant for the heterotrophic bacterial populations that degrade them.
  • Sinking particles host unique microbial communities that differ from the surrounding water column.