Highly structured prokaryote communities exist within the skeleton of coral colonies
Marcelino, V.R.; van Oppen, M.J.H.; Verbruggen, H. (2018). Highly structured prokaryote communities exist within the skeleton of coral colonies. ISME J. 12(1): 300-303. https://dx.doi.org/10.1038/ismej.2017.164
In: The ISME Journal: Multidisciplinary Journal of Microbial Ecology. Nature Publishing Group: London. ISSN 1751-7362; e-ISSN 1751-7370, meer
Physiological performance, disease and bleaching prevalence are often patchy within individual coral colonies. These responses are largely influenced by coral-associated microbes, but how the coral microbiome changes over small spatial scales has never been quantified before. We performed a high-resolution quantification of the spatial scale of microbial species turnover (β-diversity) within skeletons of boulder-forming Porites corals. We found very strong prokaryotic species turnover across spatial scales ranging from 4 mm to 2 m within individual colonies, possibly resulting from dispersal limitation and microbial interactions. The microalgal community was more homogeneously distributed, which is likely due to these photosymbionts actively boring through limestone. Our findings highlight unprecedented levels of intra-colony heterogeneity in the skeletal microbiome, which has implications for the experimental design of coral microbiome studies and for our understanding of coral resilience.
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