Kelimpahan Dan Pola Distribusi Gastropoda Di Ekosistem Mangrove Kecamatan Tan…

This study aims to determine the type, abundance and distribution patterns of gastropods in the mangrove ecosystem of Tanjung Balai District. This research was conducted in March 2019 in the mangrove ecosystem of Tanjung Balai District, Asahan Regency, North Sumatra Province. The method used in this study is survey method by determining the location of the station using purposive sampling metho…