Substrate Addition - Artificial reef — Eilat

OPP-7XJTBGpermanent identifier · cite as oceanportfolio.org/p/OPP-7XJTBG

Published as: Fish assemblage on natural versus vertical artificial reefs: the rehabilitation perspective. | Technique: Substrate Addition - Artificial reef | Genera: n/a | Method: The fish assemblage (abundance, species richness, species composition) established around the oil jetties of Eilat (northern Red Sea, Israel) was compared to those found in three adjacent natural reef habitats: two in a nature reserve (one shallow and one deep) and a third deep site located near the city. | Authors' conclusion: Both species richness and abundance were significantly higher around the vertical structures of the jetty's pillars than at all three natural sites, with the lowest values at the site closest to the city. The higher species richness at the jetties may be explained by (1) the vertical relief and high complexity of the jetty which o€ffers a variety of niches for both shallow and deep coral reef species, and (2) by the reduction in available niches at the natural sites as a result of coral destruction due to anthropogenic activity. | Lessons reported: Vertical structures are more attractive to fish settlement and recruitment than moderately sloped bottoms. | 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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