Abstract
Pangandaran rocky shores have a unique ecosystem and a variant of invertebrate organisms such as mollusk from the gastropod class. This study aims to analyze the biodiversity of gastropods on the rocky shore of Karapyak beach. This research consists of 5 stations. The quadrant set by 1 m x 1 m vertically toward the sea. The result found 773 individuals scattered in nine families. The family of Neritidae dominated (43%), followed by family cyprinoids with 6.3%. Nerita plicata is a species found to dominate in every station with an average abundance (256 ± 10) and/m2. Using the Bray-Curtis cluster analysis, showed variations in the distribution and abundance of different gastropods vertically into the ocean and uniformly distributed horizontally to the shore. Substrate and tidal are the main variables in the spatial distribution of gastropods in the Karapyak beach.
Highlights
Coastal zone is an ecosystem which there are a complex interaction both physical, chemical, biological, socio-economic and cultural factors
Coastal and marine areas in Indonesia have an important role in providing natural resources and environmental services that considerably have potential values
Muliawan et al (2016) stated that the coastal area generally functioned as a source of nutrients for biota and for its residence, feeding ground, nursery ground, and spawning ground
Summary
Coastal zone is an ecosystem (towards land and sea) which there are a complex interaction both physical, chemical, biological, socio-economic and cultural factors. These are resulting complex problems and require a holistic solution. Coastal and marine areas in Indonesia have an important role in providing natural resources and environmental services that considerably have potential values. Coastal and marine areas are the location of several unique, interrelated, dynamic and productive ecosystems. Muliawan et al (2016) stated that the coastal area generally functioned as a source of nutrients for biota and for its residence, feeding ground, nursery ground, and spawning ground. One spot in coastal areas that have rich biodiversity is the intertidal zone (Hutomo and Moosa, 2005; Datta et al, 2010; Ruttenberg and Granek 2011; Hamza et al, 2018)
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