Substrate Addition - Artificial reef — Oahu

OPP-89PAE2permanent identifier · cite as oceanportfolio.org/p/OPP-89PAE2

Published as: Colonization of artificial reef materials by corals and other sessile organisms | Technique: Substrate Addition - Artificial reef | Disturbance addressed: not reported | Genera: Porites, Pocillopora, Montipora | Method: Benthic community development was compared on coral rock and materials used to construct artificial reefs at two sites off Oahu, Hawaii. The materials tested were concrete, car tires and metal (painted steel). In Kaneohe Bay, one series of plates was immersed in winter, another in summer. At both sites, plates were oriented horizontally, and upper and lower surfaces were examined for corals which were counted, measured, and the number of polyps recorded. Cover of sessile organisms on the Kaneoh… | Post-restoration monitoring: 18.5 months | Authors' conclusion: Highest coral recruitment in Kaneohe Bay was on metal and least on tires, Recruitment peaked in summer due to heavy settlement of Montipora verrucosa on lower surfaces. In Kaneohe Bay, where fish grazing was low, thalloid algae, and solitary and colonial tunicates were common on the plates. Compound tunicate cover was higher on plates immersed in winter than summer, and higher on concrete and coral than on metal or tire plates. There was more open space on tire and metal than on coral and concrete plates. Intense fish grazing occurred off Kahala, and encrusting bryozoans, coralline algae and … | Lessons reported: Concrete is recommended for artificial reef construction because community development was most similar to coral, it is durable in seawater and it can be shaped to specification. Metal structures which disintegrate slowly would also be appropriate. | 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.

Recorded result

No result recorded yet. A result is recorded when the project moves to Paused, Completed or Discontinued.

A variable shows "pending" instead of a contribution when no domain area has been set for it yet — the share of the world a project touched cannot be computed without one. The health percentages are accurate regardless.