Ecosystem transplant from a healthy reef boosts coral health at a degraded reef

Natalie Levy (), Joseane A. Marques, Noa Simon-Blecher, David G. Bourne, Tirza Doniger, Jennifer I. C. Benichou, Jin Yan Lim, Ezri Tarazi and Oren Levy ()
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Natalie Levy: Bar-Ilan University
Joseane A. Marques: Bar-Ilan University
Noa Simon-Blecher: Bar-Ilan University
David G. Bourne: James Cook University
Tirza Doniger: Bar-Ilan University
Jennifer I. C. Benichou: Bar-Ilan University
Jin Yan Lim: James Cook University
Ezri Tarazi: Israel Institute of Technology
Oren Levy: Bar-Ilan University

Nature Communications, 2024, vol. 15, issue 1, 1-14

Abstract: Abstract Organismal communities associated with coral reefs, particularly invertebrates and microbes, play crucial roles in ecosystem maintenance and coral health. Here, we characterized the organismal composition of a healthy, non-urbanized reef (Site A) and a degraded, urbanized reef (Site B) in the Gulf of Eilat/Aqaba, Red Sea to assess its impact on coral health and physiology. Biomimetically designed terracotta tiles were conditioned for 6 months at both sites, then reciprocally transplanted, and scleractinian coral species, Acropora eurystoma and Stylophora pistillata, were attached for an additional 6 months. After 12 months, tiles from Site A transplanted to Site B exhibited greater invertebrate richness and diversity than Site B’s original tiles (via Cytochrome c. Oxidase subunit I metabarcoding). Key bacteria from the healthy reef were more prevalent on Site A tiles and on the tiles transplanted to Site B (via 16S rRNA gene sequencing). Corals originally from Site B attached to transplanted healthy tiles (Site A) showed higher photochemical capacity, increased endosymbionts, and reduced physiological stress, measured by total antioxidant capacity and an integrated biomarker response. Our findings demonstrate the successful transfer of organismal communities between reefs, highlighting the potential benefits of healthy reef-associated invertebrates and microbes on coral physiology and their implications for reef restoration strategies.

Date: 2024
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DOI: 10.1038/s41467-024-54149-6

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