Comparison of fish community structure on artificial reefs deployed at different depths on turkish Aegean sea coast

A profundidade da implantação de recifes artificiais é uma das questões mais importantes no planejamento de etapas e do futuro êxito. A maior parte dos estudos visando determinar a comunidade de peixes em volta de recifes artificiais foi realizada, principalmente , a profundidades de 10-25m no Mediterrâneo e Mar Egeu. Os objetivos deste estudo são determinar e comparar a estrutura da comunidade de peixes em volta de recifes artificiais que foram implantados a profundidades de 20, 30 e 40 m. A técnica de censo visual foi usada para determinar as espécies e obter uma estimativa do número e tamanho dos peixes. Não houve nenhuma diferença estatística (p> 0.05) entre as profundidades, na média da biomassa de peixes e no número de indivíduos. Entretanto, a média do número de espécies foi significativamente maior nos 20 m em comparação com as profundidades de 30 m e de 40 m (pDeployment depth of artificial reefs is one of the most important issue in planning stage and future success. Most of the studies aimed at determination of fish community around artificial reefs were conducted mainly 10-25m depths in Mediterranean and Aegean Sea. The goals of this study are determine and compare of fish community structure around artificial reefs which deployed 20, 30 and 40 m depths. Underwater visual census technique was used to determine fish species, number of individual and size estimation. There was no statistical difference (p>0.05) in mean fish biomass and number of individual between the depths. But mean species number was significantly greater on 20 m in comparison to 30 m and 40 m depths (

COMPARISON OF FISH COMMUNITY STRUCTURE ON ARTIFICIAL REEFS DEPLOYED AT DIFFERENT DEPTHS ON TURKISH AEGEAN SEA COAST

Deployment depth of artificial reefs is one of the most important issue in planning stage and future success. Most of the studies aimed at determination of fish community around artificial reefs were conducted mainly 10-25m depths in Mediterranean and Aegean Sea. The goals of this study are determine and compare of fish community structure around artificial reefs which deployed 20, 30 and 40 m depths. Underwater visual census technique was used to determine fish species, number of individual and size estimation. There was no statistical difference (p>0.05) in mean fish biomass and number of individual between the depths. But mean species number was significantly greater on 20 m in comparison to 30 m and 40 m depths (p<0.05). Furthermore, calculated values of Jaccard and Bray-Curtis indexes showed low similarity (min. 3% - max. %37) between depths

COMPARISON OF FISH COMMUNITY STRUCTURE ON ARTIFICIAL REEFS DEPLOYED AT DIFFERENT DEPTHS ON TURKISH AEGEAN SEA COAST

9th International Conference on Artificial Reefs and Related Aquatic Habitats (CARAH) -- NOV 08-13, 2009 -- Curitiba, BRAZILWOS: 000295722300005Deployment depth of artificial reefs is one of the most important issue in planning stage and future success. Most of the studies aimed at determination of fish community around artificial reefs were conducted mainly 10-25m depths in Mediterranean and Aegean Sea. The goals of this study are determine and compare of fish community structure around artificial reefs which deployed 20, 30 and 40 m depths. Underwater visual census technique was used to determine fish species, number of individual and size estimation. There was no statistical difference (p>0.05) in mean fish biomass and number of individual between the depths. But mean species number was significantly greater on 20 m in comparison to 30 m and 40 m depths (p<0.05). Furthermore, calculated values of Jaccard and Bray-Curtis indexes showed low similarity (min. 3% - max. %37) between depths