Coral Gardening - Nursery Phase — Sambangan Island

OPP-Z9FX77permanent identifier · cite as oceanportfolio.org/p/OPP-Z9FX77

Published as: Effects of Concrete-Bamboo Cages on Coral Fragments: Evaluation of a Low-Tech Method Used in Artisanal Ocean-Based Coral Farming. | Technique: Coral Gardening - Nursery Phase | Genera: Acropora, Pavona | Method: Experiment testing effects of bamboo cages to exclude coral predators (fish and invertebrates). Nubbins on concrete bases, fixed onto 1 x 1m bamboo boards. Treatments = Bamboo cages with small and large mesh, shading vs no shading, deep vs shallow. Control = no cages, open cages, no shading. | Post-restoration monitoring: 4.4 months | Authors' conclusion: Fragments do not necessarily grow faster and at higher survival rates in cages, especially if they do not adequately exclude fish. A. gomezi fragments reached the highest mean skeletal extension when cultured outside of cages in shallow water, all other treatments showed net negative growth. P. cactus growth was only affected by cages in deeper sites. Similarly, A gomezi grew faster unshaded, while P. cactus grew more in the shade. | Lessons reported: Bamboo cages not appropriate to keep fishes out, but rather attract fish, which may cause mechanical damage to coral fragments inside cages. | 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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