Comparison of natural and artificial reef fish communities in Lutoban, Negros Oriental, Philippines
1998
Schirun, B. | Waltemath, M. (Fisheries Community Development and Resources Management Project, 249 Matara Road, Tangile City, Hambantota District (Sri Lanka))
The fish communities of a small-scale tire reef and an adjacent fringing reef in Lutoban, Negros Oriental, Philippines were assessed using visual fish counts. Spatial differences in community structure were analyzed. A total of 231 species from 41 families were observed, 196 at the natural reef site and 109 at the artificial tire-reef site, with 73 being common to both. Although the total number of individuals between artificial reef and three depth zones within the natural coral reef seemed to be on a similar level, relative abundance of target fishes tends to be higher in the artificial reef (38.1%) than in the adjacent natural fringing reef (14.5%). Total biomass was higher in artificial reefs (398 kg/1500 sq m) than biomass in nearby natural reef areas (186-324 kg/1500 sq m). Target fishes tend to have a relative higher biomass in the artificial reef (88%) supporting the idea that artificial reefs act as a fish aggregating device for target fish species. Small sized fishes seemed to prefer the natural reef structure, while a higher proportion of medium sized fishes were found in the tire structure. Habitat preferences are discussed with emphasis on the results about hiding space definition prepared by Vogt (1998)
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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