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All Journal Sains dan Matematika BIO-SAINS | Jurnal Ilmiah Biologi Indonesian Journal of Jamu
Afnani, Moh. Royhan
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Health Professions Mathematics Medicine & Pharmacology Physics

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Journal : Sains dan Matematika

 1 
Keanekaragaman Kepiting pada Ekosistem Mangrove Kecamatan Ujungpangkah Kabupaten Gresik Ilmi Hamidah, Safira Aini; Afnani, Moh. Royhan; Cahya Ajeng Valenta Tresna Sulung
Sains dan Matematika Vol. 10 No. 1 (2025): April, Sains dan Matematika
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/sainsmat.v10n1.p1-8

Abstract

Kawasan mangrove Ujungpangkah Kabupaten Gresik merupakan kawasan yang memiliki karakteristik habitat yang bervariasi bagi kehidupan berbagai jenis biota yang salah satunya adalah kepiting. Tujuan penelitian ini adalah untuk menganalisis keanekaragaman dan kelimpahan kepiting khususnya pada ekosistem mangrove di Desa Banyuurip Kecamatan Ujungpangkah. Pengambilan sampel dilakukan dengan metode observasi dan pengukuran langsung di lapangan dengan menggunakan 3 stasiun. Hasil penelitian menunjukkan terdapat 4 spesies kepiting yang ditemukan yaitu Metaplax elegans, Labuanium politum, Metopograpsus latifrons, dan Tubuca dussumieri. Indeks keanekaragaman (H’) Kepiting termasuk sangat rendah dari masing-masing stasiun berkisar antara 0,668–0,956.  Nilai indeks kemerataan jenis (E) menggunakan Indeks of eveness berkisar antara 0,2 – 0,37 dengan kemerataan tertinggi pada stasiun 3. Nilai indeks dominasi (C) menggunakan Simson pada tiga stasiun berkisar antara 0,42-0,60 yang termasuk dalam kategori sedang. Pada ketiga stasiun pengamatan nilai indeks dominasi mendekati 0, berarti tidak ada individu yang mendominasi. Nilai Indeks kelimpahan relatif spesies kepiting tertinggi dimiliki Tubuca dussumieri yaitu sebesar 39%. Hasil pengukuran parameter lingkungan pada lokasi penelitian memiliki suhu rata-rata bekisar antara 27 - 29 °C, pH substrat 6,0, dan salinitas perairan 35.5°/oo.
Gastropod Diversity in Pacar Pucang Laban Beach Tulungagung Regency Rohmah, Tri Lestari Saidha; Afnani, Moh. Royhan; Rahayu, Dwi Anggorowati
Sains dan Matematika Vol. 10 No. 1 (2025): April, Sains dan Matematika
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/sainsmat.v10n1.p29-36

Abstract

Tulungagung is a city that has a variety of beautiful beaches, one of which is Pacar beach. The condition of the beach which is still natural and clean makes this beach inhabited by a wide variety of marine biota, one of which is gastropods. The purpose of this study was to determine the diversity and relative abundance of Gastropods and the environmental conditions that affect Gastropods at Pacar Beach Pucang Laban, Tulungagung. Sampling used the transect method, by placing three transect lines. For each transect line was placed three square plots measuring 1x1 m2 each in each intertidal. Gastropods taken were gastropods that were found in each squared plot and in the substrate to a depth of 5 cm. The results of this study found 18 species belonging to 14 families. The results of the diversity obtained were based on the Shanon Wiener indeks are 2.461, which was dominated by the abundance of gastropods Clanculus atropurpureus and Conus (Lividoconus) lividus. The highest relative abundance came from the Trochidae family, Clanculus atropurpureus species of 20.97%, followed by the species Conus (Lividoconus) lividus from the Conidae family with a relative abundance of 17.74%.
Co-Authors Adi Sofyan Ansori, Muhammad Cahya Ajeng Valenta Tresna Sulung Dwi Anggorowati Rahayu Hamidah, Safira Aini Ilmi Ilmi Hamidah, Safira Aini Rohmah, Tri Lestari Saidha Sutriyansyah, Riska Ayu Tresna Sulung, Cahya Ajeng Valenta