Diversity of fish in different habitat type in urban mangrove estuaries Wonorejo, Surabaya - Indonesia

Abstract

Mangroves are vegetation that have morphological adaptation in root type to grow in coastal area. This root type adaptation makes mangrove provide habitat for various fauna. In this study we compare fish abundance in three types of mangrove habitat (vegetated area, mangrove fringe area and mangrove sea area) in urban mangrove estuaries area of Wonorejo, Surabaya - Indonesia. A total of 26 species fish species in 17 families were collected. In terms of number of species per family, Engraulidae was the most diverse (7 species), followed by Carangidae (3 species). ANOVA analysis showed that fish abundance varies significantly in three different mangrove habitat types. Habitat type that have highest diversity of fish is mangrove sea area, followed by fringe mangrove area and vegetated area. Some specific species exclusively recorded in certain habitat type, 10 species occurring exclusively in the mangrove sea area, 7 species occurring exclusively in the mangrove fringe area but there is no fish species that exclusively occur in vegetated area. The results indicate that urban mangrove estuary area in Wonorejo has potentially provide habitat for fish, but this potency was combined by a connection of vegetated area, mangrove fringe area and mangrove sea area, not only by vegetated area.