Keanekaragaman Gastropoda di Pantai Tambakrejo, Kabupaten Blitar

Abstract

Salah satu pantai selatan di Pulau Jawa yang terletak di Jawa Timur, tepatnya di Kabupaten Blitar adalah Pantai Tambakrejo, dimana di pantai tersebut terdapat keanekaragaman gastropoda dengan karakteristik yang berbeda-beda. Tujuan penelitian ini antara lain: (1) menganalisis keanekaragaman gastropoda di zona intertidal Pantai Tambakrejo, Kabupaten Blitar, (3) Menganalisis kelimpahan relatif gastropoda di Pantai Tambakrejo, Kabupaten Blitar. Penelitian ini menggunakan metode kuantitatif dengan sampling bebas, selanjutnya data dianalisis menggunakan pengukuran indeks keanekaragaman dan kelimpahan relatif. Hasil penelitian menunjukkan terdapat 6 species gastropoda, yaitu Clithon oualaniense, Oppomorus funiculatus, Littoraria scabra, Strigatella paupercula, Nerita polita, dan  Monitaria moneta dengan indeks keanekaragaman adalah 1,165. Berdasarkan perhitungan dan analisis data tersebut, maka keanekaragaman gastropoda di Pantai Tambakrejo, Kabupaten Blitar termasuk ke dalam kategori rendah dengan kestabilan komunitas sedikit.

One of the southern beaches on Java Island, located in East Java, specifically in the Blitar Regency, is Tambakrejo Beach, where there is a diversity of gastropods with varying characteristics. The objectives of this research were (1) to analyze the diversity of gastropods of Tambakrejo Beach, Blitar Regency, (2) to analyze the relative abundance of gastropods at Tambakrejo Beach, Blitar Regency. This research used a quantitative method with free sampling, where data analysis employs measurements of diversity and relative abundance indices. The results showed that the presence of 6 gastropod species, namely Clithon oualaniense, Oppomorus funiculatus, Littoraria scabra, Strigatella paupercula, Nerita polita, and Monitaria moneta, with a diversity index of 1.165. Based on the calculations and data analysis, the gastropod diversity at Tambakrejo Beach, Blitar Regency, falls into the low category with a slightly stable community.