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Research Journal of Environmental Sciences
Year: 2010  |  Volume: 4  |  Issue: 3  |  Page No.: 237 - 249

Efficiency of Coral Reef Bio-Indicators in the Northern Part of the Persian Gulf

H. Valavi, A. Savari, V. Yavari, P. Kochanian, A. Safahieh and O. Sedighi    

Abstract: The purpose of this study was to determine efficiency of coral reef indicators proposed by Reef Check for the Persian Gulf. Data were collected in the Northern part of the Persian Gulf, using Reef Cheek standard methodology, statistical analyses carried out were spearman correlation, redundancy analysis and indicator species analysis. According to the results of this study: (1) dark butterfly fish (Chaetodon nigropunctatus), Arabian butterfly fish (Chaetodon melapterus) and total butterfly fish (sum of both species) show consistent positive correlation with live coral and negative correlation with macroalgae coverage and have high, consistent and significant indicator values for high coral/low macroalgae habitats and are good indicators of healthy reefs in the region, (2) parrotfish >20 cm (sum of all species) show consistent positive correlation with live coral and negative correlation with macroalgae cover but don’t show high significant and consistent indicator value for high coral/low macroalgae habitats and are considered as weak bio-indicators for healthy reefs in the areas and (3) none of invertebrate species show consistent significant correlation with substrate types (live coral and macroalgae) or high consistent and significant indicator values for habitat types and therefore they can’t be used as reef health indicator in the region. It is concluded that only above-mentioned butterfly fish and to lower extent parrot fish can be pointed out as reef health indicators and efficiency of other fishes and invertebrates proposed by Reef Check, need to be revised as indicator of harvest types and other anthropogenic impacts in the region.

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