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Diel population and functional synchrony of microbial communities on coral reefs

TitleDiel population and functional synchrony of microbial communities on coral reefs
Publication TypeJournal Article
Year of Publication2019
AuthorsKelly LW, Nelson CE, Haas AF, Naliboff D.S, Calhoun S., Carlson CA, Edwards R.A, Fox M.D, Hatay M., Johnson M.D, Kelly E.LA, Lim Y.W, Macherla S., Quinlan Z.A, Silva G.GZ, Vermeij MJA, Zgliczynski B., Sandin SA, Smith JE, Rohwer F
JournalNature Communications
Date Published2019/04
Type of ArticleArticle
ISBN Number2041-1723
Accession NumberWOS:000464338100002
Keywordsbacteria; bacterioplankton; gradients; nutrient dynamics; Plankton; Science & Technology - Other Topics; sequence; strains; variability; water-column; Zooplankton

On coral reefs, microorganisms are essential for recycling nutrients to primary producers through the remineralization of benthic-derived organic matter. Diel investigations of reef processes are required to holistically understand the functional roles of microbial players in these ecosystems. Here we report a metagenomic analysis characterizing microbial communities in the water column overlying 16 remote forereef sites over a diel cycle. Our results show that microbial community composition is more dissimilar between day and night samples collected from the same site than between day or night samples collected across geographically distant reefs. Diel community differentiation is largely driven by the flux of Psychrobacter sp., which is two-orders of magnitude more abundant during the day. Nighttime communities are enriched with species of Roseobacter, Halomonas, and Alteromonas encoding a greater variety of pathways for carbohydrate catabolism, further illustrating temporal patterns of energetic provisioning between different marine microbes. Dynamic diel fluctuations of microbial populations could also support the efficient trophic transfer of energy posited in coral reef food webs.

Short TitleNat. Commun.
Student Publication: