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Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan
Published by Universitas Riau
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Core Subject : Science,
Earth & Planetary Sciences
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Articles 2,919 Documents
 93   94   95   96   97 
Relathionship of Organic Matter In Sediment and Macrozoobenthos Abundance in the Coastal Water of Belimbing Bay Batu Kalang, West Sumatera Simamora, Ronaldy Saputra; Nedi, Syahril; Tanjung, Afrizal
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

This research was conducted in October 2015 in Batu Kalang, Belimbing  Gulf waters, South Coastal District, West Sumatera Province. Objective of this study was to determine the environmental condition of the waters of the Gulf of Belimbing, then to know the type and abundance of macrozoobenthos, then the relationship of sedimentary organic matter content with abundance of macrozoobenthos. The method used in this research is survey method. Analysis done quite well known water conditions through the value of diversity index (H') ranged from 3.31 to 3.47. Dominance index value (C) ranges from 0.11 to 012. Uniformity value (E) ranges from 0.71 to 0.77. Macrozoobenthos which is found as many as 27 species of gastropda grade and 2 species of bivalve class. Abundance obtained ranged 6,67- 10,00 ind / m2. The relationship between the sedimentary organic matter content with abundance of macrozoobenthos obtained regression equation y = 1.378 + 0,459x with a coefficient of determination (R2) of 0.128 and a correlation coefficient (r) of 0.358. Then the organic matter content of sediment have a weak relationship with the abundance of macrozoobenthos. Keywords: Organic Materials, macrozoobenthos, sediments, Gulf Belimbing
Community Structure Of Bivalve In The Seagrass Area, In The Malang Rapat Coastal Waters, Gunung Kijang District, Bintan Regency , Kepulauan Riau Province Arga Sipahutar; Nur El Fajri; Eni Sumiarsih
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

Bivalve is commonly associated with seagrass community. To understand the community structure of bivalve in the seagrass area in the Malang Rapat coastal waters, a study has been conducted in May 2015. A purposive sampling method was applied. There were 3 stations with 3 line transects (100 m length)in each station and alongthetransects5 quadrants(1 x 1m) were placed. Results shown that there were 11 bivalvespecies present, they were Anadarasp., Circle sp.,Dosina sp., Gafrarium sp.,Macrrocallistasp., Megaitaria sp., Marcia sp.,Meretrix sp., paphiasp.,Tapes sp.,andTimoclea sp.In all study areas, the bivalvepresent mainly in the sandy gravel substrate. The valuesofdiversity index was 2.161-3.049, the Uniformity Index was 0.455-0.875 (categorized as moderate), the Dominance index was 0.130-0.249 (nodominant species). The waters quality parameters are as follows: temperature was 30.6-31.3 0C; depth was 0.23-0.33 m; current speed was 0.11-0.12 m/s; pH was 8; DO 7.6-7.9 mg/l and salinity was 30-310/00. Data on bivalve communitystructure and water quality parameters indicate that the aquatic environment in the study area is balance.Keyword :Bivalve, SeagrassEcosystem, Malang Rapat Village, Water quality
The Effectiveness of Al2SO4, CaO and Crude Tannin Extract Originated From Averrhoa bilimbi Wood to Improve the Quality of Peat Water Edi Perlindungan Silalahi; Budijono '; Sampe Harahap
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

Peat water is categorized as low quality water as it has high organic matter, low pH, high TDS and turbidity and brownish colored. Crude tannin extract has been used for improving the peat water, but there is no information on the use of Averrhoa bilimbi tannin extract in improving the quality of the water. To understand effectiveness of the A. bilimbi tannin in improving the peat water quality, a study has been conducted in May – October 2015. There was a CRD method applied, with 4 treatments, P0 (control, without tannin extract), P1(10 mlL-1), P2(20 mlL-1) and P3(30 mlL-1). In each treatment unit, 8 liters peat water was added with Al2SO4 (2 grL-1) and CaO (2.7 grL-1) and then was added with various dosages of tannin extract. The treated water was kept for 3 hours and the water quality parameters were measured. The treated water was then used to rear Cyprinus carpio. Results shown that the treated water quality was improved, there was degradation in organic matter content, turbidity and colour, while pH, DO and TDS was increase. The best treatment was obtained in P1, as the organic matter decrease, from 1,145.5 to 151.97 mg/L, the turbidity decrease, from 1,005.66 to 26 NTU and color also decrease, from 29,000.33 to 389 PtCo. The highest survival rate of C. carpio after being reared for 4 days was also found in the P1 treated water, that was 97%. Based on the data obtained, it can be concluded that the crude tannins extracts from A. bilimbi wood is effective to improve the quality of peat water.Keywords : Peat Water, tannins, Cyprinus carpio, Averrhoa bilimbi
WELFARE GRADE SOFT-SHELLED CRABS (Scylla cerrata) CULTIVATOR IN TANGKAHAN DURIAN VILLAGE, WEST BERANDAN SUBDISTRICT LANGKAT DISTRICT OF NORTH SUMATERA PROVINCE Santy Pandiangan; Eni Yulinda; Hamdi Hamid
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

This research was conducted on 17th May 2015 till 24th May 2015. The aim of this research is to describe the characteristic of soft-shelled crabs (Scylla cerrata) cultivator and analyzing the welfare level in the Tangkahan Durian Village, West Brandan Subdistrict, Langkat District of North Sumatera Province based on Badan Pusat Statistik 2005. The used method of this research is survey method and the determination of respondents by simple random sampling. The population of this research is the soft-shelled crabs (Scylla cerrata) cultivator. Remember about the homogeneity of cultivator population therefore sampling just from 30% respondents on just 9 peoples cultivator.The result of this research show the characteristic of soft-shelled crabs cultivator in the Tangkahan Durian Village, from 9 respondents only 77,78% belongs to productive categoryand 22,22% respondents belongs to very productive category, average of age 40 years old and the level of their education from 9 respondents there are 55,56% peoples finished their education in Junior High School and the others in Senior High School. Evenly, their burdening 5 peoples. Based on Badan Pusat Statistik 2005 the grade of welfare has been divided into three categories i.e. High Grade : score value 20-24, middle grade : score value 14-19, Low Grade : score value 8-13. Of assessed shoft-shelled cultivator in Kelurahan Tangkahan Durian belongs to middle welfare grade with score value 14-19.Kata Kunci : Welfare Grade, characteristic of soft-shelled crabs cultivator ,
EFFECT OF ADDITION OF MEAT FISH PATIN (Pangasius hypopthalmus) RENGGINANG PROCESSING OF CASSAVA (Manihot esculenta C) ASSESSMENT OF ORGANOLEPTIC Judith, Febrina; Buchari, Dewita; ', Sumarto
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

This study aims to determine the effect of meat catfish (Pangasius hypopthalmus) on rengginang processing of cassava (Manihot esculenta C) to the organoleptic assessment. The method used is experiment with a completely randomized design consisting of 4 levels of treatment that Ro (without the addition of meat catfish), R1 (75 g of meat catfish), R2 (100 g of meat catfish), R3 (125 g of meat catfish). Catfish fillets are weeded and then ground and washed and grated cassava then drained. Meat that has been creamed catfish mixed with herbs and cassava according to treatment and stir until blended. The dough is mixed with tapioca flour until fused. The dough is molded and steamed for 12 minutes and then dried for 1-2 days in a dryer. Rengginang dried and then fried. The parameters tested is organoleptic and chemical. The results showed that the organoleptic and chemical based rengginang meat catfish are preferred by consumers and good quality is R1 treatment with the addition of 75 g of meat catfish with such criteria (intact, neat, clean, average thickness, brownish yellow color); aroma (little fish); texture (crunchy); and taste (little fish); with a water content of 1.87%, 21.87% protein content, fat content of 33.34% and ash content of 1.68%.Keyword: meat catfish, rengginang.
Trophic Status of the Boko-Boko Peat Swamp in the Langgam Village, Langgam District, Pelalawan Regency, Riau Sihaloho, Maria Virgita; Siagian, Madju; Simarmata, Asmika Harnalin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
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The area around the Boko-Boko peat swamp has been used for palm plantation. Remains of fertilizer and pestiside used in the plantation may enter the water and decrease the water quality of the swamp. To understand the trophic status of the Boko-Boko peat swamp’s waters, a research was conducted in March 2016. There were three sampling stations namely Station 1, Station 2, and Station 3 and in each station there were three sampling points, in the surface, 1.5 secchi and in the bottom. Samplings were conducted 3 times, once/week. Trophic status was calculated based on Carlson’s Trophic State Index (TSI). Results shown that the transparency was 49 – 60 m, total phosphorus 0.13 – 0.17 mg/L, chlorophyll-a 3.12 – 6.19 μg/L, depth 45 – 250 cm, temperature 30 - 31ºC, pH 4 – 5, dissolved oxygen 0.41 – 3.26 mg/L, free carbondioxide 7.33 – 21.31 mg/L and nitrate 0.44 – 0.72 mg/L. Based on Carlson’s TSI, the water of the Boko-Boko peat swamp is categorized as moderate-eutrophic.Keywords : Peat Swamp, Boko-Boko swamp, Trophic Status, Trophic State Index
THE BUSINESS ANALYSIS OF TILAPIA AND TILAPIA MIXED COMMON CARP FLOATING CAGES AT TOBA LAKE IN KELURAHAN HARANGGAOL HARANGGAOL HORISON SUB DISTRICT SIMALUNGUN REGENCY NOTRH SUMATERA UTARA Ningsih Agresia Hutagalung; Hendrik '; Darwis '
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
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This study was conducted on 26 January to February 9 2016 in the Kelurahan Haranggaol Haranggaol Horison sub district Simalungun regency north sumatera province. The purpose of the study was to determine and profit tilapia and tilapia mixed common carp and tilapia floating cage tilapia and business, know tilapia mixed common carp in floating cage in the review of several criteria investation like FRR, RCR, PPC. The method used in this research is a case study. Based on the results obtained by comparasion of investment and business profit amounted 634.895.000 milion rupiah tilapia and tilapia mixedc ommon carp 704.395.000 milion rupiah. Based on investment criteria for tilapia is FRR 94 %, RCR 1.9 and PPC Years. As for tilapia mixed common carp are FRR 197 % and PPC 3.14 % and RCR 0,5 Years.Keywords : Analysis, Tilapia, Common carp, floating, Lake Toba
The Use of Kirchhof Chemical Index to Determine the Quality of the Siak River’s Water Ritonga, Rahmi Monalisa; Sumiarsih, Eni
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
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Siak river is one of the most polluted river in Riau. To understand the water quality in general, a research on the water quality of the river based on Kirchhof Chemical Index was conducted from December 2015 to February 2016. There were four stations. In each station water samples were collected from 3 sites, 3 times, once/week. Water quality parameters measured were temperature, conductivity, transparency, pH, dissolved oxygen, BOD5, ammoniac, nitrate, and phosphate concentration. Results shown that water quality in the research area are as follows : temperature 28.94-29.51°C, transparency 35.06-37.04 cm, depth 8.57-12.75 m, conductivity 55.43-58.87μS/cm, pH 5, dissolved oxygen 2.13-2.28 mg/L, BOD5 7.43-12.14 mg/L, ammoniac 0.50-0.75 mg/L, nitrate 0.58-0.78 mg/L and phosphate 0.07-0.22 mg/L. The value ofthe Kirchhof Chemical index was 23.80-31.19, indicates that this river is medium to highly polluted.Keywords : Siak River, Water Quality, Kirchhof Chemical Index
THE EFFECTS OF STOCKING DENSITY AND THE GIVING TOFU WITH DIFFERENT DOSES ON THE POPULATION GROWTH SILK WORMS ( Tubifex sp) Reza Ahmad; Nuraini '; Sukendi '
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
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This research was conducted on March - May 2016 in the Jln . Kamboja No. 38 , Simpang Baru , Pekanbaru Panam . This research aimed to determine the stocking density and feeding tofu dose is right for biomass growth , population and the length of silk worms ( Tubifex sp ) . The method used in this study is an experiment using a completely randomized design factorial 2 factors 3 levels of treatment with three replications . The first factor stocking density ( 35 g , 45 g and 55 g ) and doses of the feed tofu ( 35 g , 45 g , 55 g ) . The results showed that the stocking density and feeding tofu significant effect on biomass ( p < 0.05 ) . Values of biomass , length growth , and the population is highest in the treatment of stocking density 55 g / 0.098 m2 and dose feed 55 g of biomass 152g / 0.098 m2 , length growth of 1.2 cm , 19 765 ind / 0.098 m2.Key word:Tubifex sp,Stocking Density, Doses of Feed, Population Growth, Silk Worm
STUDI KELAYAKAN TEKNIS PELANTAR PENDARATAN IKAN DI DESA JARING HALUS KECAMATAN SECANGGANG KABUPATEN LANGKAT SUMATERA UTARA Rosidah Hafni; Jonny Zain; Polaris Nasution
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
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Abstract

The research was conducted during of May 2016 in the village of Jaring Halus Village Secanggang District of North Sumatra. This study aims to determine the best location suitable for development to the fishing port from three long bench in location.The method used a survey method. By comparing its aspects such as physical aspects of technical and aspects of fisheries potential. The results of the analysis show that the port site selection based on a comparison of the three points of observation sites in Jaring Halus, it can be concluded that the location at long bench III village is the best location for construction of fishing ports with score 159,58 points for factor of physical and 83,65 points for factor of fisheries potential.Keywords : Long bench, technical feasibility, Jaring Halus village

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