Struktur Komunitas Ikan di Pantai Karang Jahe Rembang

Abstract

Fish play an important role both ecologically and economically. Fish also play a role in the food chain cycle, can be used as food and tourism commodities. This study aims to examine the structure of the fish community, to analyze the relationship between the number of individual fish and the physical and chemical parameters of the waters and to determine the ecotourism potential of fish diversity in Karang Jahe Beach, Rembang. The research was conducted at 5 different stations, namely tourist area, pond area, river flow, around mangroves, and marine area close to coral reef communities. Fish were caught using fishing nets and fishing trawler. Sampling at each station was repeated 3 times. The results obtained 22 species of fish belonging to 16 families, namely Epinephelus fuscoguttatus, Lutjanus bitaeniatus, Lutjanus ehrenbergii, Chanos chanos, Liza alata, Mugil sp, Oreochromis mossambicus, Pseudapocryptes elongatus, Periophthalmus sp., Eubleekeria jonesi, Eubleekeria elongate, Eubleekeria elongate Sardinella lemuru, Pennahia argentata, Trichiurus lepturus, Scomberomorus commerson, Stolephorus sp, Stolephorus indicus, Stolephorus commersoni, Chromis analyst, Terapon theraps and Lagocephalus inermis. The species diversity index is classified as low and moderate. The species evenness index is classified as low, medium and high. The dominance index is classified as low and high. Physicochemical parameters of Karang Jahe Beach waters such as temperature, pH, salinity, DO, turbidity and TDS are still classified as suitable for life, while the brightness parameter does not support fish life.