BIODIVERSITAS IKHTIOFAUNA PADA EKOSISTEM TERUMBU KARANG DI TAMAN NASIONAL KARIMUNJAWA JAWA TENGAH

Dhanis Nuranggitasari, NIM. 17106040016 (2021) BIODIVERSITAS IKHTIOFAUNA PADA EKOSISTEM TERUMBU KARANG DI TAMAN NASIONAL KARIMUNJAWA JAWA TENGAH. Skripsi thesis, UIN SUNAN KALIJAGA YOGYAKARTA.

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Abstract

Research on the biodiversity of Ikhthiofauna in coral reef ecosystems in Karimunjawa National Park has been carried out in March 2021. This study aims to study the types of reef fish found in the National Park Karimunjawan, studied the dominant reef fish species, studied the level of diversity, and studied the factors that influence reef fish biodiversity in Karimunjawa National Park. Data collection was carried out at two research locations, namely Pancuran Beach and Harbor Pier. This research was conducted using the visual census method at each station that had been made transects with a distance of 5 m per transect. Each transect is 50 m long parallel to the shoreline. Observations were made by snorkelling along the 2.5 m transect line to the right and to the left, then the fish obtained were drawn using waterproof paper, numbered per species, and photographed using ancamera underwater for identification. Data analysis was carried out including descriptive analysis to analyze fish characteristics and quantitative analysis to calculate data including the Shannon Diversity Index (H'), Simpson's Dominance Index (C), and Everness Index (E). The environmental parameters taken include water temperature, salinity, pH, and DO. The results of this study obtained a total of 59 species of reef fish from 17 families with the dominant family being Pomacentridae. The level of diversity (H') at the research location at Pancuran Beach reached 3.3923 while at the Harbor Pier it reached 3.4285. The value of the Simpson Dominance Index (C) at the Pancuran Beach location is 0.0442 and the Harbor Pier is 0.0471. The Everness Index (E) value at the Pancuran Beach location is 0.88 and the Harbor Pier is 0.85. The difference in the index value is influenced by various environmental factors, both physically, chemically, and biologically.

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