Coral Gardening - Nursery Phase — Coffs Harbour (Laboratory)

OPP-Y916R9permanent identifier · cite as oceanportfolio.org/p/OPP-Y916R9

Published as: A potential method for improving coral self-attachment | Technique: Coral Gardening - Nursery Phase | Genera: Hydnophora | Method: Tested whether fragments of the scleractinian coral Hydnophora rigida, artificially attached upside-down, would self-attach more rapidly to the substratum than those artificially attached the right way up, which is the normal practice. We also tested the effect of three different diets (unfed, normal Artemia, and lipid-enriched Artemia) on coral growth and other biological responses. | Post-restoration monitoring: 3.3 months | Authors' conclusion: After 100 days, corals fixed upside-down grew significantly wider and faster over the substratum than corals fixed the right way up. A significantly higher number of fragments fixed upside-down were also able to self-attach and grow over the substratum (87%) compared with fragments fixed the right way up (58%). Neither the buoyant weight, height increment, symbiont density, chlorophyll, maximum quantum yield nor color of corals fixed upside-down differed significantly from corals fixed the right way up. | Lessons reported: Inverting the orientation of coral fragments may substantially accelerate the time for self-attachment and increase the survival rate of translocated corals in restoration projects. | This record was compiled from a published source and has not been confirmed by the organisation that carried out the work. No contribution to the condition index is recorded: the source reports survival of transplanted material, which is not a measure of ecosystem condition.

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