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- Title
Microbial and chemical dynamics of a toxic dinoflagellate bloom.
- Authors
Patin, Nastassia V.; Brown, Emily; Chebli, Gabriella; Garfield, Claire; Kubanek, Julia; Stewart, Frank J.
- Abstract
Harmful Algal Blooms (HABs) exert considerable ecological and economic damage and are becoming increasingly frequent worldwide. However, the biological factors underly- ing HABs remain uncertain. Relationships between algae and bacteria may contribute to bloom formation, strength, and duration. We investigated the microbial communities and metabolomes associated with aHABof the toxic dinoflagellate Karenia brevis off the west coast of Florida in June 2018. Microbial communities and intracellular metabolite pools differed based on both bacterial lifestyle and bloom level, suggesting a complex role for blooms in reshaping microbial processes. Network analysis identified K. brevis as an ecological hub in the planktonic ecosystem, with significant connections to diverse microbial taxa. These included four flavobacteria and one sequence variant unidentified past the domain level, suggesting uncharacterized diversity in phytoplankton-associated microbial communities. Additionally, intracellular metabolomic analyses associated high K. brevis levels with higher levels of aromatic compounds and lipids. These findings reveal water column microbial and chemical characteristics with potentially important implications for understanding HAB onset and duration.
- Subjects
FLORIDA; DINOFLAGELLATE blooms; KARENIA brevis; POISONS; GYMNODINIUM; ALGAL blooms; MICROBIAL communities; MICROBIAL diversity
- Publication
PeerJ, 2020, p1
- ISSN
2167-8359
- Publication type
Article
- DOI
10.7717/peerj.9493