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Microbial signatures of protected and impacted Northern Caribbean reefs: changes from Cuba to the Florida Keys
Weber, L.; González-Díaz, P.; Armenteros, M.; Ferrer, V.M.; Bretos, F.; Bartels, E.; Santoro, A.E.; Apprill, A. (2020). Microbial signatures of protected and impacted Northern Caribbean reefs: changes from Cuba to the Florida Keys. Environ. Microbiol. 22(1): 499-519. https://dx.doi.org/10.1111/1462-2920.14870
In: Environmental Microbiology. Blackwell Scientific Publishers: Oxford. ISSN 1462-2912; e-ISSN 1462-2920
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| Auteurs | | Top |
- Weber, L.
- González-Díaz, P.
- Armenteros, M.
- Ferrer, V.M.
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- Bretos, F.
- Bartels, E.
- Santoro, A.E.
- Apprill, A.
|
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| Abstract |
There are a few baseline reef-systems available for understanding the microbiology of healthy coral reefs and their surrounding seawater. Here, we examined the seawater microbial ecology of 25 Northern Caribbean reefs varying in human impact and protection in Cuba and the Florida Keys, USA, by measuring nutrient concentrations, microbial abundances, and respiration rates as well as sequencing bacterial and archaeal amplicons and community functional genes. Overall, seawater microbial composition and biogeochemistry were influenced by reef location and hydrogeography. Seawater from the highly protected ‘crown jewel’ offshore reefs in Jardines de la Reina, Cuba had low concentrations of nutrients and organic carbon, abundant Prochlorococcus, and high microbial community alpha diversity. Seawater from the less protected system of Los Canarreos, Cuba had elevated microbial community beta-diversity whereas waters from the most impacted nearshore reefs in the Florida Keys contained high organic carbon and nitrogen concentrations and potential microbial functions characteristic of microbialized reefs. Each reef system had distinct microbial signatures and within this context, we propose that the protection and offshore nature of Jardines de la Reina may preserve the oligotrophic paradigm and the metabolic dependence of the community on primary production by picocyanobacteria. |
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