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INDONESIA
Jurnal Perikanan Universitas Gadjah Mada
Published by Universitas Gadjah Mada
ISSN : 08536384     EISSN : 25025066     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Perikanan Universitas Gadjah Mada are published to promote a critical review of the various investigative issues of interest in the field of fisheries between the researchers, academics, students and the general public, as a medium for communication, dissemination, and utilization of wider scientific activities.
Arjuna Subject : -
Articles 4 Documents
 1 
Search results for , issue "Vol 3, No 1 (2001)" : 4 Documents clear
STUDI KESESUAIAN LAHAN PESISIR UNTUK TAMBAK DI KECAMATAN NGOMBOL KABUPATEN PURWOREJO Bambang Triyatmo
Jurnal Perikanan Universitas Gadjah Mada Vol 3, No 1 (2001)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8864

Abstract

The objective of this study was to know the feasibility of the coastal area for shrimp and fish pond based on physical, chemical and biological parameters of soil and water as well as topographycal situation.The results of the study indicated that : .i). the coastal area in Ngombol district Purworejo regency was suitable for pond, .ii). the area have two kinds of land units, namely clay alluvial and sandy land units, iii). the former one was suitable for conventional pond constraction, fertile and acid soil, .iv).  the latter  was unsuitable for conventional pond constraction, unfertile and slightly-netral soil, .v). the water for shrimp and fish culture might be supplied from Cokroyasan and Lereng rivers (fresh-brackiswater),  well (freshwater), and directy from intestidal zone for seawater.vi). in general, the water quality were suitable for shrimp and fish  culture.This study suggested that in the clay alluvial soil, extensive and intensive ponds might be developed. However, intensive pond should be developed in the area with sandy soil.
KAJIAN MORFOMETRI BERDASARKAN TOPOGRAFI DAN POTENSI PERIKANAN WADUK SERMO Bambang Triyatmo
Jurnal Perikanan Universitas Gadjah Mada Vol 3, No 1 (2001)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8867

Abstract

The  objectives of this studies was to know morphometric characteristics, primary productivity of water, and the fisheries potency of Sermo reservoir. Topography and fisheries potency were estimated based on a morphometrical study of Sermo reservoir after inundation. The study was conducted on the topographical maps with 1 : 12,500 scale and 10 m contour intervals. The primary productivity of Sermo reservoir after inundation was observed.The results showed that Sermo reservoir had an optimal level 136.6 m msl with a total water area 157 ha, water volume 25 millions m3, length of shore line 16,3 km and shore line development index 3,67. The primary productivity of water ranged from 2.2 to 178.7 mg C/m3/h. Potential area for fish culture using floating net cage was 1.5 ha with total production around 300 ton/year. The potency for endogenous and introduction fish production in the Sermo reservoir was approximately 5-10 ton/year.
STUDI KONDISI LIMNOLOGIS WADUK SERMO PADA TAHAP PRA-INUNDASI Bambang Triyatmo
Jurnal Perikanan Universitas Gadjah Mada Vol 3, No 1 (2001)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8862

Abstract

A study on the limnologic conditions of Sermo reservoir  was conducted  from September  1996 to January 1997. Water samples were collected from six stations every ± 25 days. The samples from each station were collected from 2 to 3 different depths of water. The objectives of this research were to know the physically, chemically and biologically water quality of Sermo reservoir. Results indicated that the water quality of Sermo reservoir was suitable for fishes. The concentration of NH4+, NO3-, PO43-, dan SO4= indicated that the water fertility could support the growth of plankton as natural food for fishes and other aquatic organisms. However, the water quality and its productivity have not been stabile yet. Phytoplankton was more dominance than zooplankton. Number of phytoplankton species were between 10 - 15 species, that was dominated by Nitzschia sp., Nostoc sp. and Peridinium. Zooplankton species observed were Brachionus  sp. and Cyclops sp. Any aquatic plants were not found.
PEMASARAN IKAN SEGAR AIR TAWAR DI PROPINSI DAERAH ISTIMEWA YOGYAKARTA Sukardi Sukardi
Jurnal Perikanan Universitas Gadjah Mada Vol 3, No 1 (2001)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.8863

Abstract

The special region province of Yogyakarta (DIY) has  five regencies with different natural resources to support the development of fishery product. Therefore, fishery product especially fish was distributed from surplus regencies to the other regencies which produced less quantity of the product. The objectives of this study were to know the market structure, market channel, price margin and fluctuation. The study was conducted using analytic discriptive method. Data were collected by survey in 5 regencies in DIY province, covered subjects such as wholesaler, retailer, dealer, farmer (producer) and consumer. Results of this study indicated that (1) market structure in wholesaler level was oligopoly, but in the retailer level was free market. The retailers had stronger relationship to wholesaler  specially for keeping continuity of fish supply, (2) fish market channel and price margin depending on fish species and location of markets, (3) prices fluctuation was determined by supply and demand mechanism. The average price margins in wholesalers and retailer ranged from  10  to 15 and 10 to 20%,  respectively,  (4)  marketing of fresh freshwater fishes were still consentrated in the city and its surrounding area. Comparing with the other regencies in DIY, Yogyakarta Regency (Kotamadya Yogyakarta) had the largest demand for freshwaterfish which was dominated by cat fish (lele dumbo).

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