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Marine Bacterial Biofilms: Shaping Surface Communities
Michael G Hadfield1, Marnie Freckelton1, Brian T Nedved1
1Kewalo Marine Laboratory, Pacific Biosciences Research Center, School of Ocean and Earth Sciences and Technology, University of Hawai'i at Mānoa, Honolulu, Hawai'i, USA;
Annual Review of Microbiology
|August 19, 2025
Summary
Marine benthic communities are shaped by basal biofilms. Microbes in biofilms influence eukaryotic community assembly, symbiosis, and evolution, especially in a changing ocean.
Area of Science:
- Marine Ecology
- Microbial Ecology
- Evolutionary Biology
Background:
- Marine benthic community assembly is a key area of ecological research.
- The role of basal microbial biofilms in structuring these communities is increasingly recognized.
- Understanding these interactions is crucial for predicting ecosystem responses to environmental change.
Purpose of the Study:
- To investigate the influence of basal benthic biofilms on the accumulation of eukaryotic organisms.
- To explore the composition, dynamics, and recruitment cues of marine benthic biofilms and eukaryotes.
- To examine the roles of microbial symbiosis, habitat engineering by biofilms, and evolutionary history in benthic community assembly.
Main Methods:
- Review and synthesis of existing literature on marine benthic ecology and microbial biofilms.
- Analysis of spatial and temporal variations in biofilm and eukaryotic community structures.
- Examination of microbial cues and symbiotic relationships driving community composition.
Main Results:
- Benthic biofilms comprise diverse microbes that influence eukaryotic settlement and community structure.
- Spatial and temporal variations in biofilms and eukaryotes are driven by microbial cues and environmental factors.
- Bacterial-animal symbiosis and biofilm habitat engineering significantly impact community dynamics.
- The geological history of microbial mats has shaped larval-bacterial interactions and benthic community evolution.
Conclusions:
- Basal benthic biofilms are critical architects of marine eukaryotic community assembly.
- Microbial biofilms play essential roles in habitat provision and mediating ecological interactions.
- Understanding biofilm dynamics is vital for marine conservation and management in a changing world.
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