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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
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The effectiveness of EM4 addition in the biofilter to reduce nitrate and phosphate concentration in the palm oil industry liquid waste Saputra, Ariadi; Harahap, Sampe; Purwanto, Eko
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract Palm oil industrial liquid waste is rich in Nitrate and Phosphate and thus need to be processed before being flown to environment. A study aims to reduce the nitrate and phosphate in that waste by using a biofilter that was added with EM4 has been conducted in April-May 2019. There were 3 treatments applied, namely the addition of 0.12 ml/L, 0.15 ml/L and 0.18 ml/L EM4 in the anaerob and aerob tanks, 3 replications. The waste was settled for 3 days in the anaerob tank and 3 days in the aerob tank. The treated waste was then tested for Nitrate and Phosphate concentration. The treated waste was also used for rearing Cyprinus carpio seedlings. Results shown that after being treated using the EM4 enriched biofilter, the nitrate reduced into 6.4226mg/L and that of the phosphate was reduced into 0.3673 mg/L. The best treatment to reduce the Nitrate and Phosphate concentration was the addition of 0.15 ml/L EM4in the biofilter. The survival of C. carpioseedling reared in the treated waste was 93.33%. It can be concluded that the addition of EM4 to the biofilter tank was able to reduce the Nitrate and Phosphate concentration in the palm oil industrial liquid waste Keywords : Effective Microorganism-4, Cyprinus carpio, Aerob tank, Anaerob tank
Stomach Content Analysis of Fish Living Around Floating Net Cage Aquaculture in The Koto Panjang Dam, Kampar Regency, Riau Province Tumanggor, Josua Setiawan; Windarti, Windarti; Eddiwan, Eddiwan
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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Abstract Fish feed pellets that enter the water around the floating net cage may affects the feeding habit of wild fish living around the cage. To understand the stomach content of fish living around the floating net cage in the Koto Panjang Dam, a study has been conducted on  December 2018.  Samplings were conducted 3 times, once/ 2 weeks and the fish were captured using   gill net and lure, in the surface up to 15 m depth. Stomach content of the fish was then analyzed and identified. Were 9 fish species present. The remains of fish feed pellets were present in the stomach of all fishes captured and the percentage of fish pellets in the stomach of the fish were as follows:   15% in the Puntius schwanefeldii; 67% in Hampala bimaculata; 25% in Tynnichtys vaillanti ;  83% in  Puntius bramoides ;   23% in Macrones nigriceps; 25% in Mastacembelus unicolor; 50% in Osphronemus goramy; 67% in Cyprinus carpio and100%  in Oreochromis niloticus. High portion of fish feed pellets in the stomach of several wild fish species indicates that the wild fishes are greatly affected by the presence of fish feed pellets remains, while the presence of the pellets in the stomach of M. unicolor and M. nigriceps indicates that the remain of the pellets also affects the fish that live in   15 m depth.  Keywords: Pellets, feeding habit, floating net, stomach content, Koto Panjang Reservoir
HOUSEHOLD HOUSE INCOME IN THE LAKE OF KAJUIK LANGGAM SUB DISTRICT PELALAWAN REGENCY RIAU PROVINCE Titik Sartika; Firman Nugroho; Kusai Kusai
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 conducted on February 2018 located at Kajuik Lake, Langgam Sub District, Pelalawan Regency, Riau Province. The location of this study is determined deliberately with the consideration that this location has a fisherman community in supporting the husband's economy assisted by members of the household. This study aims to find out Knowing the characteristics of fishermen, fishermen's wife and fishermen, Knowing the contribution of household members in the fishery sector or non-fishery sector to household income of fishermen and See the difference of income before and after the change of lake management from indigenous peoples to the government to income fishermen in Lake Kajuik. The method used in this study is the survey method with respondents amounted to 10 fishermen, where Determination of respondents is determined by the technique chosen purposely (purposive sampling). The characteristics of fisherman, fisherman's wife and fisherman's son in this study are: a) age, b) number of dependents c) work experience and d) level of education, contribution of household members, contribution contribution provided by fisherman is very high while contribution from wife is low and contribution from middle-aged children, and experienced income difference before and after management change from average of fisherman's income Rp 2,946,634 / month to Rp 1,396,634 / month or there is income difference Rp. 1.550.000 / month. The contribution of household members of fishermen of Kajuik lake are 48,31% fisherman, fisherman's wife 19,47% and fisherman's son 32,47%. Keywords: Household Income, Contributions, Lake Kajuik.
THE EFFECT OF GIVING TYPES OF FEED AND DIFFERENT DOSES ON POPULATION GROWTH Daphnia magna Rahmadani, Rizka; Nuraini, Nuraini; Sukendi, Sukendi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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AbstractThis research was conducted on 1 September-1 October 2018 at the Laboratory of Fish Hatchery and Breeding, Faculty of Fisheries and Marine Sciences,  Riau University. The purpose of this  study is to determine the effect of feed types and different doses on the population growth of Daphnia magna so as to produce the highest population growth. The method used in this study was a 2 factor Complete Random Design (CRD) method and 6 treatment levels were carried out 3 replications to obtain 18 experimental units. The treatment in this study was the provision of yeast feed, tofu pulp and sago pulp with a dose of 1.0 g/l and 1.5 g/l. The results showed that administration of different types of feed and dosage had a significant effect (P <0.05) on the population growth of Daphnia magna. The highest population growth of Daphnia magna was produced by treatment with 1.5 g/l doses of Yeast with an average population of 468.33 ind/l and the lowest population was found in sago pulp treatment with an average population growth of 221.67 ind/l. The water quality parameter values obtained during the study showed a good range for the growth of Daphnia magna, namely temperatures ranging from 24.0-30ºC and pH 6-7,9. Keywords :Daphnia magna, different feeds, different doses, population growth 
Carrying Capacity of PLTA Koto Panjang Reservoir Based on Dissolved Oxygen For Fish Net Cage Culture in Batu Bersurat Village, XIII Koto Kampar Sub District, Kampar Regency, Riau Province Tiara Priskila; Tengku Dahril; Asmika Harnalin Simarmata
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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AbstractCarrying capacity is an ability of aquatic environment to support the life of organism in aquaculture. This research aims to determined carrying capacity based on dissolved oxygen for fish net cage. It was conducted on June-July 2019 in PLTA Koto Panjang Reservoir Batu Bersurat Village. Sampling was determined at 3 locations namely Station 1 (tourism area and arround of this station there were palm’s plantation), Station 2 (restaurant and trees around the station) and Station 3 (floating net cages area). Each station there were three sampling points, namely in the surface (15 cm), 2 Secchi depth (330 cm) and 4 Secchi depth (660 cm).  Sampling was carried out 4 times, once/week. Water quality parameters measured were dissolved oxygen, free carbondioxide, BOD5, nitrate, phosphate, pH, temperature, transparency and depth. The results shown the concentration of dissolved oxygen in the waters ranged from 5.42-7.39 mg/L, nitrate 0.0568-0.0828 mg/L, phosphate 0.0592-0.0963 mg/L, free carbondioxide 5-12.99 mg/L, BOD5 4.03-8.90 mg/Ltransparency 153.5-161.25 cm and temperature 28.8-30.8 oC. Based on dissolved oxygen concentration indicates that the carrying capacity of inundation is 63,727 kg/yearand 141 units floating cage with size(6 x 6 x 6) m3.Keywords : Concentration, depth, floating net cages, water quality,BOD5
Growth and Survival Rate of Red Tilapia (Oreochromis sp) with the Frequency of Addition of Molasses to Biofloc Systems Manalu, Edison Roganda; Mulyadi, Mulyadi; Putra, Iskandar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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ABSTRACT      This research was conducted from October to December 2018 in the Technical Services Unit (UPT) Pool and Hatchery, Faculty of Fisheries and Marine Affairs, Riau University, Pekanbaru. The purpose of this study was to determine the frequency of addition of molasses in the biofloc system to the growth and survival of red tilapia (Oreochromis sp). The method used in this study is the experimental method using a Completely Randomized Design (CRD) of 1 factor with 4 levels of treatment and 3 replications. P0: Treatment without giving molasses (control), P1: Frequency of giving molasses 150 ml / m3 and given every 5 days, P2: Frequency of giving molasses 150 ml / m3 and given every 10 days, P3: Frequency of giving molasses 150 ml / m3 and given every 15 days. The frequency of adding molasses of 150 ml / m3. The results showed that the best treatment was treatment P2: The frequency of giving molasses 150 ml / m3 and given every 10 days. Weight growth an average of 4.96 grams, absolute weight growth of 3.82 grams, the absolute length of 5.29 cm, specific rate growth of 3.68%, feed efficiency of 106.34%, feed conversion ratio (FCR) of 0.83, livelihoods ( SR) 85%, floc volume 21 ml / l. Thewater qualityparameters  aretemperature 26-280C, dissolved oxygen is 3.54-4.40 mg / l, pH 6-7, and ammonia 0.0032 - 0.0090 mg / l. Keywords: Molasses, Biofloc, Red Tilapia (Oreochromis sp)          
DISTRIBUTION OF ORGANIC MATTER IN SEDIMENTS OF SUNGAI MESJIDESTUARY, PURNAMA MARINE STATION, DUMAI CITY, RIAU PROVINCE Pranata, Eryc; Rifardi, Rifardi; Musrifin, Musrifin
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 February to March 2019 which is located in the estuary waters of the Sungai MesjidPurnama Marine Station, Dumai City, Riau Province. Data analysis of organic matter was carried out at the Physical Oceanography Laboratory of Marine SciencesDepartment, Faculty of Fisheries and Marine, University Of Riau. This study aims to determine the distribution of organic matter in sediments in estuary areas that are affected by 2 water masses,currents and semidiurnal tidal analysis distribution of organic matter showed that the distribution of organic matter content at low tide ranged from 4.90 to 16.50 %. The results show that the waterflow of Sungai  Mesjid toPurnama coast there are mangrove ecosystems.During tidal events currents from Sungai Mesjid meet with the mass of water from the RupatStrait. Purnama. Key words :Organic Matter, Sungai Mesjid,Mangrove, Currents, Tides
SENSITIVITY OF Thalassia hemprichii EXTRACT ON THE GROWTH OF PATHOGENIC BACTERIA (Vibrio alginolyticus and Aeromonas hydrophila) Barbara, Shanta; Nursyirwani, Nursyirwani; Zulkifli, Zulkifli
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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ABSTRAKThe research was conducted from November 2018 until May 2019. The purpose of this study was to determine the effect of T. hemprichii seagrass extract on the sensitivity of V. alginolyticus and A. hydrophila bacteria. The research used experimental method. Sensitivity test was carried out in the Marine Microbiology Laboratory of the Faculty of Fisheries and Marine, University of Riau. Based on the, sensitivity test positive control (K+) indicated hishest inhibitory zone diameter against V. alginolyticus  andA. hydrophila39,57 mm and 42,11 mm, respretively. While there was not clear zone found in the negative control (K-). Extract of T. hemprichii had the hishest inhibitory zone against V. alginolyticus  andA. hydrophila at a concentration of 100%, these were 2,45 mm and 2,58 mm, respectively. The lowest 10% indicated the lowest inhibitory zone against V. alginolyticus (0,65 mm) and A. hydrophila (0,38 mm).Key words: Extract, T. hemprichii,Sensitivity, V.alginolyticus and A. hydrophila, 
DISTRIBUTION ANALYSIS ANDMARKETING EFFICIENCY OF SEA FISH IN BANGLIAO OKI SINABOI SUB DISTRICTSINABOIROKAN HILIR REGENCY OF RIAU PROVINCE J.M. Debataraja, Rivai; Yulinda, Eni; Arief, Hazmi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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                                           AbsrtakThis study aims to analyze the form of distribution channel involved in marketing fresh marine fish at Bangliao Oki, Sinaboi Sub District, Rokan Hilir Regwncy. Calculating marketing margins formed from the marketing of fresh marine fish at Bangliao Oki, Calculating the value of marketing efficiency at each marketing agency involved in the marketing process of fresh marine fish at Bangliao Oki Sinaboi Sub District Rokan Hilir Regency. The population in this study were the owner of Bangliao Oki, the fisherman who landed the fish in Bangliao Oki which amounted to 10 people, Agent which amounted to 2 people, 4 people along-along Traders, and 10 retailer merchants. The method used in this research is survey method by doing observation directly to the field (observation) By interviewing fishermen, Agent, retailer and other market players in Sinaboi Rokan Hilir Regency.The results of this study indicate that the pattern of distribution of fish commodities in Bangliao Oki found 2 (two) marketing channels, The most efficient marketing channel is the Marketing I channel involving Retailers, this is due to the marketing costs incurred and the selling price by smaller retailers rather than along-along. The two marketing channels in this study are efficient marketing, this is because the efficiency value is greater than 1 (one), the most efficient marketing is the marketing of the fish cencaru at the marketing institution along-along with the highest efficiency value that is 4.46 and the marketing with value the lowest efficiency is found in Agent marketing agency that is malong fish with efficiency value 2.08. Keywords:Bangliao Oki, Distribution, Marketing Margin, Marketing Efficiency
ANALYSIS OF COAST LINE CHANGES USING LANDSAT IMAGERY AT TAPIAN NAULI DISTRICTCENTRAL TAPANULIREGENCYNORTH SUMATERA PROVINCE Amari, Tomi; Galib, Musrifin; 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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ABSTRACT Beach is a geographical which is be composed of sand and is located in the coastal area. The coastal area is the restrictions between coastal and sea. Beaches can change due to natural and human influences. The research was conducted in July 2018 at Tapian Nauli I, Central Tapanuli Regency, North Sumatera Province.The aim this research is to map and analyze the rate of shoreline change using Landsat Imagery. Imagery data downloaded from USGS site and then to analyze using ER Mapper and Arc Gis application.The results show that there has been a change in the coastline (abrasion and accretion). The current velocity range 0.09 - 0.12 m/s. The lowest of wave energy is 1.568 Nm / m² and the highest is 5.096 Nm/m². The lowest of abrasion is 0.538 m/year and the highest is 3.36 m/year. Keywords: Coastline, Tapian Nauli, Landsat Imagery, Abrasion, Accretion 

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