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All Journal Jurnal Perikanan dan Kelautan BERITA BIOLOGI ZOO INDONESIA
D Djokosetiyanto, D
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Immunology & microbiology Social Sciences Other

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POLA PERTUMBUHAN DAN FAKTOR KONDISI IKAN LUMO Labiobarbus ocellatus (Heckel, 1843) DI SUNGAI TULANG BAWANG, LAMPUNG Yudha, Indra G; Rahardjo, M. F.; Djokosetiyanto, D; Lumban Batu, Djamar T.F.
ZOO INDONESIA Vol 24, No 1 (2015): Juli 2015
Publisher : Masyarakat Zoologi Indonesia

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Abstract

Penelitian ini bertujuan untuk menganalisis pola pertumbuhan dan faktor kondisi relatif (Kn) ikan Labiobarbus ocellatus di Sungai Tulang Bawang, Lampung. Ikan contoh dikumpulkan setiap bulan menggunakan jaring insang dari April 2013 hingga Maret 2014. Spesimen terdiri dari 690 ikan jantan dan 651 ikan betina. Ikan lumo jantan dan betina memiliki pertumbuhan allometrik positif. Persamaan hubungan panjang bobot ikan lumo jantan adalah log W=-5,652+3,284 log L, sedangkan ikan lumo betina memiliki persamaan log W=-5,607+3,272 log L. Persamaan pertumbuhan von Bertalanffy untuk ikan lumo jantan adalah Lt=265,65*[1-e-0,14(t+0,67)] dan pada ikan lumo betina Lt=255,15*[1-e-0,23(t+0,405)]. Nilai ratarata Kn ikan lumo adalah 1,02±0,03 (jantan) dan 1,02±0,04 (betina) yang mengindikasikan bahwa ikan-ikan tersebut dalam kondisi yang baik.
ANALISIS BEBAN PENCEMARAN DAN KAPASITAS ASIMILASI DANAU SENTANI, PAPUA SEBAGAIUPAYAKONSERVASI LINGKUNGAN PERAIRAN Walukow, Auldry F; Djokosetiyanto, D; KholiPdan, KholiPdan; Soedharma, Dedi
BERITA BIOLOGI Vol 9, No 3 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v9i3.777

Abstract

The Lake Sentani has problems. Firstly, high of erosion number i.e. 94.52 ton/ha/year of which the value is higher than erosion tolerance at average 25 ton/ha/year.Secondly, high concentration of chemical pollution such as Cu (0.0201- 0.1081 mg/L) and Zn (0.21 - 0.36 mg/L) which these values are above water quality standard approved by the government as ruled in PP 82 Tahun 2001 about the management of water quality and water pollution. Therefore research and management are needed to find solution for the sustainability of this lake. The aims of this research is to be acquainted with carrying capacity of Lake Sentani through analyzing 1) the pollution load, and 2) the assimilation capacity of Lake Sentani aquaculture. The collected information is important for future aquaculture environmental management and conservation. Result shows that the pollution loads from river are obtained as follows (ton/month): TDS (441.806 to 775.287), BOD (3.510 to 7.801) and COD (7.737 to 16.055).The assimilation capacities from lake are obtained as follows (ton/month): TDS (12.18494), BOD (11.31973) and COD (122.4184).The number of pollution loads (TDS, BOD and COD) are under the assimilation capacity.
Analisis Kelayakan Finansial Penangkapan Ikan di Waduk Koto Panjang Kabupaten Kampar Provinsi Riau Warningsih, Trisla; Djokosetiyanto, D; Fahrudin, Achmad; Adrianto, Luky
Jurnal Perikanan dan Kelautan Vol 21, No 1 (2016)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.21.1.18-24

Abstract

This study aimed to analyze the financial feasibility of fish catching in Koto Panjang Reservoir of Kampar District, Riau Province, using business and investment criteria analyses. The result showed that each engine boat and rowboat has IDR 29,313,301.59 and IDR 15,044,311.11 for their respective profit; 3.55 and 3.48 for their respective Revenue-Cost Ratio Value; 0,29/yr or 3.3 months and 0.30/yr or 3.6 months for their respective fishermen payback period; and 3.6 % and 4 % for their respective Return on Investment (ROI) value. Investment criteria analysis on fish catching for each engine boat and rowboat obtained Net Present Value (NPV)of 142,169,973.13 and 72,313,686.96, respectively; 3.01 and 2.91 for their respective Net B/C value; 49% and 46% for their respective Internal Rate of Return (IRR) value. Fish catching business in Koto Panjang Reservoir is deemed feasible because NPV>0, IRR>interest rate, and B/C>1 for both engine boat and rowboat
Co-Authors Achmad Fahrudin Auldry Fransje Walukouw DEDI SOEDHARMA Djamar Tumpal F. Lumbanbatu Indra G Yudha, Indra G KholiPdan, KholiPdan Luky Adrianto M. F. Rahardjo, M. F. Trisla Warningsih