Depth-dependent bacterial colonization on model chitin particles in the open ocean

Roberts, C, Bird, K, Chrismas, N, Hartman, S and Cunliffe, M 2024 Depth-dependent bacterial colonization on model chitin particles in the open ocean. Letters in Applied Mictrobiology. https://doi.org/10.1093/lambio/ovae107

Full text not available from this repository.

Abstract/Summary

Sinking particles transport carbon from the surface to the deep ocean. Microbial colonization and remineralization is an important ecosystem service constraining the biogeochemistry by recycling and redistributing nutrients from the surface to the deep ocean. Fragmentation of particles by zooplankton and the resulting colonization by microorganisms before ingestion, known as ‘microbial gardening’, allows for trophic upgrading and increased microbial biomass for detritivorous zooplankton. Using model chitin particles incubated with seawater collected from surface, meso- and bathypelagic depths in the North-East Atlantic Ocean, we determined particle-attaching bacterial communities to identify general and depth-specific candidates of particle colonisation. Comparison of particle-attached communities at the amplicon sequence variant (ASV) level showed bacteria found on surface particles were also colonisers in the bathypelagic, in line with sinking particles promoting vertical connectivity. Bathypelagic particle-attached communities were most diverse. We propose some particle colonisers attach in the surface and sink out with the particle, whilst other colonisers are depth specific. This suggests that candidates for particle colonisation differ with depth, which may be important when considering the implications for delivery of ecosystem services including carbon cycling and the role they play for zooplankton grazers

Item Type:	Publication - Article
Additional Keywords:	bacteria, environmental microbiology, biogeochemical cycles, marine microbiology, microbial diversity
Subjects:	Marine Sciences
Divisions:	Marine Biological Association of the UK > Marine Microbiome
Depositing User:	Ms Kristina Hixon
Date made live:	09 Dec 2024 10:23
Last Modified:	09 Dec 2024 10:23
URI:	https://plymsea.ac.uk/id/eprint/10337

Actions (login required)

View Item