Hendrawan, Andika Luky Setiyo
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EVALUASI KEBERHASILAN PENEBARAN BEBERAPA JENIS IKAN DI WADUK PENJALIN, JAWA TENGAH Hendrawan, Andika Luky Setiyo; Ghofar, Abdul; Tjahjo, Didik Wahju Hendro
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 20, No 1 (2024): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.20.1.%p

Abstract

Penebaran ikan adalah salah satu upaya optimalisasi produksi ikan. Sebanyak 137.000 ekor ikan meliputi ikan nila, tawes, mas dan udang galah ditebar di Waduk Penjalin.  Penelitian ini bertujuan mengevaluasi penebaran beberapa jenis ikan di Waduk Penjalin meliputi kemampuan memanfaatkan sumberdaya pakan dan ruang, pertumbuhan ikan dan peluang tertangkap kembali oleh nelayan. Metode yang digunakan adalah stratified random sampling. Penelitian dilakukan pada bulan Desember 2021 sampai Februari 2022 di 4 stasiun pengamatan. Pengambilan sampel ikan menggunakan jaring insang dengan mata jaring 0,75; 1; 1,5; 2; 2,5 dan 3 inci. Selain itu pengambilan data dibantu oleh enumerator. Hasil penelitian menunjukkan bahwa pola pertumbuhan ikan nila dan udang galah bersifat alometrik negatif, tawes bersifat alometrik positif dan ikan mas bersifat isometrik. Faktor kondisi ikan nila (0,78-1,45), tawes (0,94-1,18), mas (0,81-1,23) dan udang galah (0,75-1,14). Performa pertumbuhan ikan tebaran cenderung lambat. Analisis kebiasaan makan ikan memperlihatkan bahwa makanan utama ikan nila adalah fitoplankton (99,9%), ikan tawes berupa fitoplankton (90%), ikan mas berupa tumbuhan (85,71%) dan udang galah berupa moluska (86,21%). Ikan tawes memiliki peluang tertangkap paling tinggi dibandingkan dengan ikan lainnya.
The Abundance and Community Structure of Phytoplankton in the Ir. H. Djuanda Reservoir Following the Implementation of the “Citarum Harum” Program Sentosa, Agus Arifin; Suryandari, Astri; Hadi, Abdul; Putri, Didha Andini; Gumilang, Andi Perdana; Kusumaningtyas, Dyah Ika; Sarbini, Rakhmat; Susilawati, Evi; Dwiatmojo, Santoso; Hendrawan, Andika Luky Setiyo; Astuti, Iswari Ratna
Barakuda 45: Jurnal Ilmu Perikanan dan Kelautan Vol 7 No 1 (2025): Edisi April
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/barakuda45.v7i1.585

Abstract

The Ir. H. Djuanda Reservoir in Purwakarta Regency is one of the priority areas in the implementation of the Citarum Harum programme, which focuses on restoring the environmental quality of the Citarum River. This study aims to determine the abundance and community structure of phytoplankton in Ir. H. Djuanda Reservoir after the implementation of the Citarum Harum Programme. This study used purposive sampling method at 11 stations in Ir. H. Djuanda Reservoir in August 2024. Phytoplankton abundance was measured based on APHA and community structure was analysed using ecological indicators including diversity, variability and dominance indices. Water quality assessment was determined using the STORET method as the analytical instrument. Statistical analyses were also conducted to assess differences in phytoplankton abundance between stations. The results showed that the phytoplankton community in Ir. H. Djuanda Reservoir during the study consisted of five classes and 31 genera with low diversity and evenness and no dominance. Phytoplankton abundance ranged from 389,048 - 710,536 cells/L and differed between stations (P<0.05). The relative abundance of Cyanophyceae (46.60%) was almost equal to Chlorophyceae (43.45%) indicating a change in the environment for the better. This study is expected to be one of the references for monitoring and evaluation materials for the implementation of the Citarum Harum programme as empirical evidence that there has been a change in the water quality status of Ir. H. Djuanda Reservoir from heavily polluted to moderately to lightly polluted.