Gastropod Community Structure in Mangrove Types of Sonneratia alba, Ceriops tagal, and Rhizophora apiculata at Tiga Warna CMC, Malang Taufiqurrahman Akbar, Insafitri, Wahyu Andy Nugraha
Marine Science Study Program, Universitas Trunojoyo Madura
Abstract
CMC Tiga Warna is a village located in Sitiarjo Village, Sumbermanjing Wetan District, Malang Regency. This research was conducted at the CMC Tiga Warna location. The location was used as a research location because there are mangrove and gastropod ecosystems. This study aims to determine the structure of the gastropod community in the mangrove species Sonneratia alba, Ceriops tagal, and Rhizopora apiculata, to determine mangrove density, gastropod density, the relationship between mangrove density and gastropod density and environmental parameters at CMC Tiga Warna. Observations of gastropods using a 1m x 1m transect at 5 observation points at each station and mangroves using a 10m x10m transect at each station. The research location was determined using purposive sampling method. The research location was divided into 3 stations based on the different types of mangroves. Station 1 species Sonneratia alba is located in West Clungup, station 2 species Ceriops tagal is located in Clungup, and station 3 species Rhizopora apiculata is located in famous stump. Identification of mangrove and gastropod species based on identification book. Data analysis used linear regression. The environmental parameters at the location are fairly good because they are in accordance with quality standards. Based on the results of the identification found 7 species of gastropods at the three stations. The results of the calculation of the community structure at station 1 obtained (H^) moderate, (E) moderate, and (D) low results. The community structure located at station 2 showed low (H^), (E) low, and (D) high results. The community structure located at station 3 shows that (H^) is low, (E) is low, and (D) is high.
Keywords: Gastropods- Mangroves- CMC Tiga Warna, Community structure
