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Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan
Published by Universitas Riau
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Earth & Planetary Sciences
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Articles 2,919 Documents
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EFFECTIVENESS OF ADHESIVES ON WOOD HULL LAMINATION Dian Dolani Simanjuntak; Syaifuddin Syaifuddin; Ronald Mangasi Hutauruk
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACTThe research aims to determine the volume of adhesive needed in laminating wooden ships to produce the maximum strength of the ship structure with the adhesive used c'ketz reinforce bond. The method used in this study is an experimental method by testing directly in a laboratory with 4 levels, namely the dose of 0 ml (without treatment), 100 ml, 150 ml, 200 ml per wood laminate with as many as 5 repetitions at each level. Data analysis used analysis of variance (Analysis of Variance) with a completely randomized design mathematical model. From the results of the study that the modulus of elasticity (MOE) of the treatment of 0 ml (control), 100 ml, 150 ml, and 200 ml respectively was 32597.36 kg/cm2, 35401.03 kg/cm2, 40939.67 kg/cm2, and 46768.81 kg/cm2 and the laminated Modulus of Repture treatment of 0 ml, 100 ml, 150 ml and 200 ml respectively with 648.5823 kg/cm2, 666.5167 kg/cm2, 731.8859 kg/cm2 and 770.6981 kg/cm2. So that the adhesive volume needed in the lamination of wooden ships to produce the maximum structural strength of the ship is the adhesive volume of 200 ml and to determine the adhesive requirements needed for laminate of the hull on the immersed part in the water it can be calculated using the formula: Adhesive Requirement (l) = 3,333 x , where x is a large WSA. Keywords: ship, adhesive, reinforce bond, Modulus of Elasticity, Modulus of 
Phytoplankton Based Trophical State of the Tanjung Balam Lake in the Buluh Cina Village, Kampar District, Riau Province Zein Lubis, Solat Adawiyah; Siagian, Madju; Simarmata, Asmika Harnalin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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                     AbstractMany activities in the Tanjung Balam Lake contribute the input of organic and anorganic matter that affects the nutrient concentration and increasing the growth of phytoplankton. A research about Trophic State of Tanjung Balam Lakeby Phytoplankton in Buluh Cina Village Kampar District Riau Province has been conducted in June-July 2019. The location of the water samples to measure water quality defined 3 stations, namely in the inlet, the curve of the lake, and in the end of the lake. In each station, there were 2 sampling points, namely in the surface (0.15 m) and 2 Secchi depth (0.90 m). Samplings were conducted 3 times at intervals of a week. Water quality parameters measured were temperature, transparency, depth, dissolved oxygen, CO2, pH, nitrate and phosphate contents. Results shown that there were 61 species of phytoplankton that were belonged to 7 classes, namely Chlorophyceae (23 species), Trebouxiophyceae (4 species), Zygnematophyceae (4 species), Euglenophyceae (14 species), Bacillariophyceae (12 species), Cyanophyceae (3 species), and Cryptophyceae (1 species). The phytoplankton abundance in the Tanjung Balam Lake was 606,144-982,688 cells/L. The most common type of phytoplankton present was Monoraphodium griffithii. Results shown that the temperature was 28-30.3oC, transparency was 49.7-54 cm, depth was 151-236.7 cm, pH was 5, dissolved oxygen was 4.03-6.57 mg/L, CO2 was 3.83-6.13 mg/L, nitrate was 0.016-0.03 mg/L, and phosphate was 0.083-0.108 mg/L. Based on the type and abundance of phytoplankton present, it can be concluded that the Tanjung Balam Lake can be categorized as mesotrophic.Keywords: Kampar River, Oxbow Lake, Mesotrophic, Phytoplankton abundance
Types and Abundance of Periphyton Attached to the Pipe Substrates in the Bakuok Lake,Aur Sati Village, Tambang District, Kampar Regency, Riau Province Gultom, Zogi Tri; Dahril, Tengku; Simarmata, Asmika Harnalin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 2 (2020): 2 Juli - Desember 2020
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Abstract            Periphyton is a microorganism that attached to submerged substrate. This research aims to determine the trophic state of the Bakuok Lake in Aur Sati Village based on periphton abundance. This reseacrh has been conducted in July-August 2019. There were 3 stations, namely Station 1 (around the plantation area), Station 2 (settlements area) and Station 3 (around the net cages area). In each station there were two sampling points, namely in the surface (15 cm depth) and 2 Secchi depths (174 cm depth). The substrate used is a pipe substrate (10x11 cm2). Substrate placement done 1 week before sampling. Sampling were conducted 3 time, once/week. The periphyton samples were obtained by spraying the pipe surface with aquadest using a plastic sprayer. . The periphyton were preserved with lugol 1% was then identified using an identification book Prescott (1974), Belcher and Swale (1978), Yunfang (1995), Biggs and Killroy (2000). Water quality parameters measured were temperature, transparency, depth, pH, dissolved oxygen, free carbondioxide, nitrate (NO3) and phosphate (PO4). Result shown  that there were 29 types of periphyton, belongs to 5 classes, namely Bacillariophyceae (14 species), Chlorophyceae (6 species), Cyanophyceae (4 species), Euglenophyceae (2 species), and  Zygnematophyceae (3 species). Periphyton abudance found during the study ranged from 10 cells/cm2-1749 cells/cm2. The most commom periphyton type was Nitzschia acicularis. Based on the type of periphyton, it was concluded that the Bakuok Lake can be catagorized as oligotrophic.  Keyword: Trophic State, Water Quality, Nitzschia acicularis    
Trophic State of The Sungai Paku Reservoir Kampar Kiri District Kampar Regency Riau Province Based on TSI (Trophic State Index) Tamba, Niger Efafras; Simarmata, Asmika Harnalin; Dahril, Tengku
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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AbstractTrophic State Index can be used to determine the trophic state of waters. The TSI used physical, chemical and biological approaches to determine the trophic state and the result will be more representative for analyzing the trophical state of waters. To understand the trophic state of the Sungai PakuReservoir, a research has been conducted in May - June 2019. There were three sampling stations, namely station 1 (riverin zone), station 2 (transition zone) and station 3 (lakustrin zone). In each sampling station there were 3 sampling point of depth, in the surface, in 2 Secchi depth, and in 4 Secchi depth. Sampling were conducted 3 times, once week. Water quality parameter measured were total phosphorus, chlorophyll-a, transparency, temperature, pH, dissolved oxygen and Nitrate. Trophic status was calculated based on Carlson Trophic State Index (TSI). The water quality parameter values were as follows: transparency: 69.2 - 80.8 cm, total phosphorus: 0.056 - 0.176 mg/L, chlorophyll-a: 1.753 - 3.372µg/L, depth: 69.2 - 80.8 cm, temperature: 28 - 30oC, pH: 5, dissolved oxygen: 2.08 - 5.74 mg/L and nitrate: 0.08 -0.11 mg/L. Trophic State Index value of the Sungai PakuReservoir was 54.49 - 59.57, it can be categorie as light eutrophic .Keywords: Water Quality, Reservoir, Light Eutrophic
Types and abundance of periphyton attached to the bamboo substrates in Lake Bakuok Aur Sati Village, Tambang District, Kampar Regency, Riau Province Sihombing, Djob Fernadi; Simarmata, Asmika Harnalin; Dahril, Tengku
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 2 (2020): 2 Juli - Desember 2020
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AbstractPeriphyton is a microorganism that attached to a submerged substrate. This research  aims to determine the trophic state of the inundated area in Bakuok Lake, Aur Sati Village on periphyton abundance. This research has been conducted in June-July 2019. There were 3 stations, namely S1 (settlements area and closed to palm plantation area), S2 (restaurant and settlements area), S3 (around the floating net cages area). In each station there were two sampling points, namely in the surface (15 cm depth) and 2 Secchi depths (174 cm depth). The substrate used is a bamboo substrate (10x11 cm2). Substrate placement done 1 week before sampling. Sampling were conducted 3 time, once/week. The periphyton samples were obtained by spraying the bamboo surface with aquadest using a plastic sprayer. The periphyton were preserved with lugol 1% was then identified and the abundance of periphyton (APHA, 2012) was calculated. Water quality parameters measured were temperature, transparency, depth, pH, dissolved oxygen, free carbondioxide, nitrate and phosphate. Results shown that there were 25 types of periphyton, belongs to 5 classes, namely Bacillariophyceae (16 types), Chlorophyceae (4 types), Cyanophyceae (2 types), Zygnematophyceae (2 types), and Eugelenophyceae (1 type). Periphyton abundance found during the study ranged from 1,928-8,558 cells/cm2. The most common periphyton type was Melosira granulata. Based on the type of periphyton, it was concluded that the area in Bakuok Lake, Aur Sati Village can be catagorized as eutrophic.  Keywords: Types, abundance, Melosira granulata, eutrophic
CONSTRUCTION OF SONDONG IN BANTAN DISTRICT, BENGKALIS REGENCY Renny Afri Artika; Arthur Brown; Isnaniah Isnaniah
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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ABSTRACTThis research was conducted in April 2018, located in Bantan District, Bengkalis Regency. This study aims to find out about the material and construction of sondong, as well as how to operate in the District of Bantan.The method used in this research is survey. Sondong in Bantan District uses human power in its operation, its different from sondong in other areas that use ships when is operated, this makes researchers interested in knowing how sondong construction in Bantan District. Sondong net construction in Bantan District does not have a significant difference. construction on the buoy, ballast, upper ris, lower ris lines is basically the same in every village. Keywords: Construction, Sondong, District of Bantan.
ABUNDANCE AND DISTRIBUTION PATTERN GASTROPODS IN INTERTIDAL ZONE OF TELUK KASAI BEACH PESISIR SELATAN DISTRICT SOUTH SUMATRA PROVINCE Ide Rival Dianta Sitepu; Afrizal Tanjung; Elizal Elizal
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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AbstractThis study aims to determine the abundance, relative abundance and distribution patterns of gastropods in the intertidal zone of the Teluk Kasai beach. This research was conducted in June 2019 in the intertidal zone of the Teluk Kasai beachPesisir Selatan District, West Sumatra Province.The method used in this research is survey method of determining the location of the station using purposive sampling method. Sampling was conducted at random (Random Sampling) using 1x1 m² sized plot. The results were obtained4 species of gastropods from 3 families. Abundance of gastropods are not significantly different. The highest Relative abundance species at all stations which Littoraria scabra. Distribution pattern is clumped. The average temperature values in the range30,6 - 32ºC, salinity in the range of 32 - 33.6 ‰, the degree of acidity (pH) would exist in the range of  7.04 - 7.62, and the total organic material ranges from 3.33 - 4.20%. Type of substrate is Sand Gravely.Keywords: Gastropods, Abundance, Distribution Patterns, Teluk Kasai beach
The Effect Of hCG (Human Chorionic Gonadotropin) With Different Dosage ToOvulation And Eggs Quality Of Redfin Shark (Epalzeorhynchos frenatum) Zulkifli Zulkifli; Netti Aryani; Nuraini Nuraini
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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ABSTRACTThe research was conducted from September to October 2018 in The Center for Research and Cultivivation of Ornamental Fish (BRBIH), Depok, West Java. The purpose of this research was to evaluate the effect of hCG to latent time, number of eggs stripping, increase in egg diameter, increase egg maturity, ovisomatic index value of redfin shark (Epalzeorhynchos frenatum) fish. The treatment used in this research was in injection of hCG with defferent doses is : P0: Control using NaCl 0,9% as much 0,2 ml/kg body weight, P1: Injection of hCG with dose 300 IU/kg body weight, P2: Injection of hCG with dose 500 IU/kg body weight, P3: Injection of hCG with dose 700 IU/kg body weight. The result showed that hCG dose of 500 IU/kg of body weight was the best in turn of latent time obtained 7 hours 54 minutes, number of eggs resulted 323stripping, increase in egg diameter 0,09 mm, increase egg maturity 18% and ovisomatic index value 14%.Keyword: hCG, Ovulation, Eggs Quality,E. frenatum
THE EFFECT OF ORGANIC MATERIALSFROM CATFISH Clarias sp.CULTURE ON BIOMASS (Tubifexsp) CULTIVATION WITH THE RECIRCULATIONSYSTEM Putra, Widodo; Pamukas, Niken Ayu; Rusliadi, Rusliadi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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ABSTRACTThis research was aimed to determine the organic matter produced from catfish waste with different stocking densities that are best for the increase of biomass and the number of silk worms that are maintained with a recirculation system. The research method used was the experimental method and the design used was a non-factorial Completely Randomized Design with 4 levels of stocking solid treatment namely 100 catfish / m3 (P1), 150 catfish / m3 (P2), maintenance of catfish 200 / m3 (P3). The results showed that organic matter produced from different catfish stocking densities had a significant effect (P <0.05) on individual biomass and growth. The highest biomass value and individual growth were found in 200 tail / mstocking density3 (P3)with an average of 137.3 g and an increase in individuals with an average of 49,302 individuals. Based on the results it can be concluded that organic matter produced from stocking density of different catfish culture can increase individual biomass and growth.Keywords:Tubifexsp, Stocking Density, biomass, individual growth, materials organic.
CORRELATION OF SOIL NUTRIENTS WITH ZOOBENTHOS IN GROUND PEAT POND THAT WERE GIVEN BIOFERTILIZER FORMULATION Rahmayuni, Apriliza; Hasibuan, Saberina; Syafriadiman, Syafriadiman
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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Abstrack         This research was conducted from May until July 2018 at the Kualu Nenas village, Tambang Subdistrict, Kampar Regency, Riau Province. The objective of this was to study to determine opportune biofertilizer formulation, correlation of soil nutrient with zoobenthos in ground peat pond that were given biofertilizer formulation. The method used in this study is an experimental method using a Complete Random Design (CRD) with 1 factor, 5 treatment and 4 replications. The treatment used in this experiment are P0 (control/non biofertilizer formulation), P1 (biofertilizer formulation 700g/m2), P2 (biofertilizer formulation 750g/m2), P3  (biofertilizer formulation 800g/m2), P4 (biofertilizer formulation 850g/m2).         Result of this study shown that the best treatment was P2 (biofertilizer formulation 750g/m2) were a N 0,81%, P 0,16%, K 0,84%, KBOT 76,81%, microzoobenthos abudance 62.172 ind/m2 and macrozoobenthos abudance 30.581 ind/m2. The analysis of the KBOT showed strong correlation with zoobentos abudance. The parameters of water quality such as water temperature ranged between 27,94-30,14 ; pH 6-7;  DO 3,06-3,70ppm; nitrates 1,72-2,87ppm and orthoposfat 1,76-3,30 ppm. Absolute weight, absolute length growth and specific growth rate of Patin fish is 3,31grams; 5,25cm;  98,75% respectively. Keywords: Biofertilizer formulation,  Microzoobenthos, Macrozoobenthos

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