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All Journal Jurnal Sapa Laut Jurnal Ilmiah Universitas Batanghari Jambi Jurnal Inovasi Daerah
Dewi Kresnasari
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(RETRACTED) Komunitas Gastropoda di Hutan Mangrove Segara Anakan Cilacap Moria Yunantri; Eti Wahyuningsih; Dewi Kresnasari
Jurnal Ilmiah Universitas Batanghari Jambi Vol 22, No 3 (2022): Oktober
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jiubj.v22i3.2280

Abstract

This study aims to determine the gastropod community in the Cilacap Segara Anakan Mangrove Forest. The research was conducted in July-September in the Cilacap Segara Anakan Mangrove Forest. This study uses a survey method, sampling is carried out 3 times in July-September 2021. The sampling method is purposive random sampling. There are 3 observation stations, station 1 in the east, station 2 in the middle and station 3 in the west of the Cilacap Segara Anakan Mangrove Forest. The results of this study were 17 species and divided into 7 families, namely Potamididae, Neritidae, Littorinidae, Muricidae, Ellobiidae, Thiaridae, Assimineidae. Diversity (H') ranges from 0.45-1.06, which means that the level of diversity is in the low to medium category. High gastropod abundance was found at station 3, which was 747 individuals with 12 species. Dominance (C) with the highest index value of 0.76 which means that the level of dominance of gastropods is high and there is a dominant gastropod species, namely Melanoides tuberulata and the lowest index value of 0.36 which means that the level of dominance of gastropods is low, there is no dominant gastropod.
DISTRIBUSI SPASIAL DAN PREFERENSI HABITAT GASTROPODA DI KAWASAN HUTAN MANGROVE SEGARA ANAKAN, CILACAP Dewi Kresnasari; Arbi Mei Gitarama; Subhan Subhan
Jurnal Sapa Laut (Jurnal Ilmu Kelautan) Vol 7, No 4: November 2022
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jsl.v7i4.29582

Abstract

Ekosistem mangrove secara ekologis berperan sebagai spawning ground, nursery ground dan feeding ground berbagai macam organisme. Salah satu biota yang terletak pada ekosistem mangrove Segara Anakan adalah Gastropoda. Fauna ini memegang peranan penting dalam jaring-jaring makanan dan proses dekomposisi. Hutan mangrove Segara Anakan mengalami perubahan akibat faktor alami (sedimentasi) dan faktor antropogenik. Jika hal ini diabaikan tentu saja akan mempengaruhi pola distribusi dan preferensi habitat Gastropoda. Tujuan penelitian ini adalah untuk mengetahui komposisi, kelimpahan, distribusi dan preferensi habitat Gastropoda pada hutan mangrove Segara Anakan, Cilacap. Penelitian dilakukan pada bulan Agustus-Oktober 2022 dengan periode pengambilan dua minggu sekali. Metode sampling yang digunakan yaitu purposive sampling. Dua pemilihan lokasi berdasarkan perbedaan karakteristik yaitu : St A (bagian timur Segara Anakan, salinitas 10-20 ‰, kerapatan mangrove Rhizophora sp. rapat, dekat dengan pelabuhan) dan St B (bagian barat Segara Anakan, salinitas 5-10‰, kerapatan mangrove Rhizophora sp. jarang, dekat dengan pemukiman penduduk). Pada setiap stasiun penelitian ditentukan lima titik pengambilan sampel, setiap titik terdapat tiga plot pengambilan sampel. Data yang diperoleh dianalisis dengan PCA (Principal Component Analysis). Berdasarkan hasil penelitian diperoleh komunitas gastropoda pada St A sebanyak 8 famili dan St B 6 famili. Famili yang paling mendominasi pada kedua stasiun pengamatan yaitu Potamididae dan Neritidae. Kelimpahan tertinggi terdapat pada St B sebesar 290 ind/m2, sedangkan St A berjumlah 180 ind/m2. Pola distribusi gastropoda termasuk dalam kriteria mengelompok dan merata. Dari hasil analisis PCA kelimpahan Gastropoda berhubungan erat dengan kandungan oksigen terlarut. Hal ini terkait peran oksigen dalam pemenuhan respirasi dan dekomposisi bahan organik. Kata kunci : Gastropoda, Mangrove, Pola distribusi, Preferensi habitat, Segara Anakan
BIODIVERSITAS GASTROPODA DI HUTAN MANGROVE SEGARA ANAKAN CILACAP Dewi Kresnasari; Mei Gitarama, Arbi
Jurnal Inovasi Daerah Vol. 3 No. 1 (2024): JID : Jurnal Inovasi Daerah, Juni 2024
Publisher : Badan Perencanaan Pembangunan Penelitian dan Pengembangan Daerah Kabupaten Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56655/jid.v3i1.144

Abstract

Segara Anakan is a lagoon surrounded by swamp forest with a mud substrate. Several biota live in it, one of which is Gastropods. This biota has slow movements and is relatively sedentary. The aim of research on gastropod biodiversity is to describe the diversity and dominance of their species. The research was conducted in July-September 2021. The research method used was a survey with a purposive random sampling technique at three stations taking into account differences in vegetation community structure. Station 1 (St 1) is in the eastern part of Segara Anakan with vegetation that dominates Aegiceras corniculatum; Station 2 (St 2) is in the middle of Segara Anakan with vegetation that dominates Nypa fruticans; Station 3 (St 3) is in the western part of Segara Anakan with vegetation dominating Sonneratia alba. Each station is determined by nine different sampling points once every month. The results showed that the Potamididae and Neritidae families were most commonly found at all stations during the study. The highest abundance is found in St 3, namely 1433 ind/m2, the lowest in St 1, namely 545 ind/m2. The diversity index in the medium category is at St 1 (1.05) and St 3 (1.59), while the low category is at St 2 (0.85). The dominance index in the medium category is at St 2 (0.55), and in the low category at St 1 (0.47) and St 3 (0.28). Factors that influence differences in abundance, diversity and dominance are adaptation, food and environmental conditions in which they live.
Co-Authors Arbi Mei Gitarama Eti Wahyuningsih Mei Gitarama, Arbi Moria Yunantri Subhan Subhan