| dc.description.abstract | Artificial reefs is an artificial habitat which is created to resemble the characteristics of natural reefs to improve the community of coral reefs that have been damaged in natural waters ecosystem. The effectiveness of artificial reefs made of coconut shell is observed during the period of March 2012 - May 2012 in the waters of Pramuka island, Kepulauan Seribu, Jakarta. The method used experimental method, where bubu tambun is used to capture the specimen that will be analyze for it’s level of gonad maturity. The observations is done with the visual census method with 2 areas i.e. 1 meter and 2 meter that would later be analyzed for it’s index of diversity (H’), index homogeneity (E) and the dominance index (C) at the artificial reefs site. The results showed that 10 family with 13 species are dominant to stay while in the natural coral reef consists of 8 family with 25 described species. The result of fishing capture, it consist of 10 family (Pomacentridae, Balistidae, Chaetodontidae, Holocent, Labridae, Scaridae, Siganidae, Xanthidae, Muraenidae). Gonado Stomato Index (GSI) of fishing capture are GSI I (46%); GSI II (28%); GSI III (22%) and GSI IV (4%). Artificial reefs with 1 meter areas has a range of diversity index between 1.68 -2.5; and the uniformity index ranged between 0,68-1.07 and dominance index 0.11-0.16. Artificial reefs with 2 meters areas has a range of diversity index between 1,79 – 2,15; range of uniformity index 0.59-0.90 and the index of the dominance of 0.09- 0.16. | en |
