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Gastropod is one the mollusk phylum that can adapted at the mangrove ecosystem. Gastropod are organisms that have an ecological role as forming detritus. The study aimed to examine species diversity of gastropods in the mangrove forest ecosystem of Sebubus Village, Paloh District, Sambas Regency. The study was conducted in April 2019, using the survey method. Observations found 6 families and 16 species of gastropods in the mangrove ecosystem. Gastropods species are Chicoreus capucinus, Nerita balteata, Neritina cornucopia, Nerita violacea, Cerithideopsilla alata, Cerithidiopsis quoyii, Cerithidea obtusa, Littoraria scabra, Littoraria undulata, Littoraria carinifera, Nassarius dorsatus, Cassarius dorsatus, Cassidula aurisfelis, Ellobium aurisjudae, Cassidula nucleus, Pythia plicata, and Ellobium gangeticum. Species diversity index of gastropod in zone 1 = 0.83, zone 2 = 0.73 and zone 3 = 0.79 in the low category. Species abundance index of gastropod in zone 1 = 15.3, zone 2 = 10.5, zone 3 = 15.8.  Species evenness index of gastropod in zone 1 = 0.32, zone 2 = 0.30 and zone 3 = 0.30 categorized as low. Species dominance index of gastropod in zone 1 = 0.20, zone 2 = 0.28 and zone 3 = 0.25 are categorized as low. Species similiarity index of gastropod in zone 1 and 2 = 91.67%, zone 2 and 3 = 80.00%, zone 1 and 3 = 81.48 are categorized very high.Keywords: Diversity, Gastropods, Mangrove Ecosystems

Abstrak

Utilization of natural resources by the community sometimes does not pay attention to the limits of ability or environmental carrying capacity in the regeneration process for sustainable life cycle, both biologically, physically, ecologically and economically. Optimal and environmentally sound utilization and management of natural resources is required to support the sustainability of natural resources including mangrove forests. Mangrove forest is one type of tropical rainforest located along the coastline of tropical waters. This forest is a transition of terrestrial and marine environment habitat. One of the mangrove forest in West Kalimantan is located on Pulau Padang Tikar Batu Ampar Sub-district of Kubu Raya Regency with mangrove forest area of approximately 58,953 Ha which consists of 11 villages inside the forest. The purpose of this research is to know the types of mangrove vegetation and the utilization of mangrove vegetation by the community in 11 villages of Pulau Padang Tikar. This research uses survey method with interview technique. Numbers of respondents were 10 people from each village (total number 110 respondents) in Pulau Padang Tikar. Results of the research found 20 mangrove vegetation species found in the community and 9 types of mangrove vegetation are used for firewood, building material, charcoal, honey bee cultivation and herbal medicines. The species found were Acanthus ilicifolius, Acrostichum aureum, Avicennia sp.