Coral Gardening — Curacao

OPP-XGBCXBpermanent identifier · cite as oceanportfolio.org/p/OPP-XGBCXB

Published as: New Seeding Approach Reduces Costs and Time to Outplant Sexually Propagated Corals for Reef Restoration. | Technique: Coral Gardening | Genera: Favia | Method: Testing the effectiveness of two types of cement tetrapods seeded with coral propagules. The tetrapods were incubated for 6 months in flow-through aquaria, and placed in containers with planula from aquarium reared coral colonies. The tetrapods, with coral settlers, were transferred to holding tanks for three weeks, after which they were transplanted at the restoration sites. Restoration sites were of low, medium or high structural complexity. | Survival of transplants reported by the source: 56% | Post-restoration monitoring: 12 months | Authors' conclusion: Tetrapods moved very little and a majority became attached to the substrate, with no differences between the two designs. An average of 9.6 % of settlers survived on the two designs, and there was no difference in the growth rate on either design. 56% of tetrapods sustained a >1 coral polyp after one year, and this proportion is higher in medium and high complexity reefs. | Lessons reported: Seeding in areas with low complexity may not be successful, as tetrapods may move and cause abrasion to to settlers. Concrete is ideal for algae to grow on, so the authors suggest trying a non-porous material like glass or glaze ceramics to limit algal growth | 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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