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INDONESIA
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
 160   161   162   163   164 
Carrying Capacity Assessment Based on Chlorophyll-ain the Tajwid Lake, Langgam Sub-District, Pelalawan District, Riau Province for Extensive Fishing Fadilah, Nisa Wangi Tresna; Simarmata, Asmika H.; Siagian, Madju
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT Carrying capacity is defined as the ability of aquatic environment to support the life organism in that area. A study aimed to assess the aquatic carrying capacity based on chlorophyll-a for extensive fishing was conducted in the Tajwid Lake. The carrying capacity was determined based on primary productivity (chlorophyll-a content), which is indicating the existence of phytoplankton in the water. This research was conducted in March-April 2018 in the Tajwid Lake. There were 3 stations, namely Station 1 (inlet area), Station 2 (in the middle of lake) and Station 3 (outlet area).  Water quality parameters measured were temperature, transparency, pH, dissolved oxygen, CO2, nitrate, phosphate, and chlorophyll-a concentration. The concentration of chlorophyll-a indicates that the carrying capacity of the Tajwid lake for extensive fishing was 6.925 tons/year. Water quality parameters were as follows: transparency 47.0-54.7 cm, temperature 29.3-30.7oC, pH 5, dissolved oxygen  4.75-6.29 mg/L, CO2 17.32-22.64 mg/L, nitrate 0.0541-0.0820 mg/L, phosphate 0.1327-0.2798 mg/L, and concentration of chlorophyll-a  was 7.96 µg/L. 
STRATEGY OF HOUSEHOLD FISHERMEN IN THE FACE OF POVERTY IN DESA KOTA PARI OF PANTAI CERMIN SUB-DISTRICT OF SERDANG BEDAGAI REGENCY OF NORTH SUMATERA PROVINCE Agustina Saragih; Darwis Darwis; Hamdi Hamid
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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 ABSTRACT    The research was conducted on March 2018 held at Desa Kota Pari of PantaiCerminSub-district PantaiCermin Serdang Bedagai Regency of North Sumatera Province. This study aims to identify the factors causing poverty in the Desa Kota Pari  and to formulate what strategies are carried out by fishermen in the face of poverty. The method used in this research is survey method with 41 households as respondents, the determination of respondents through simple random sampling. Factors causing poverty in the Desa Kota Pari  is influenced by the low human resources which is characterized by the low level of education of fishermen, other causes of poverty are fluctuations in fish season, simple catching tools, consumptive behavior and income level and household expenditure. The strategy of dealing with the most powerful poverty to increase household income is to optimize the role of family members, other than that the strategy undertaken by the fishermen in the form of diversification of work, and borrowing. Keywords:Strategy,Household, Poverty, Fisherman
SHORELINE CHANGEBY USING SATELLITELANDSAT IMAGEATRANGSANG BARAT DISTRICT OF MERANTI REGENCY RIAU PROVINCE Rifdayati, Putri; Galib, Musrifin; Efriyeldi, Efriyeldi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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                                                 AbstrakShoreline changes isprocesses of accretion and abration, triggered due to natural and human activities factors in coastal areas.This research wasconductedat April 2018 in the coastal district of West Rangsang District of Meranti Islands.This research was aimed to determinewide and rate of shoreline changeby using satellite landsat imageat 2002 until 2018 with DSAS 4.3 (Digital Shoreline Analysis System). The research used surveymethod  and determination of sampling location by purposive sampling. Measurement of physical parameters is done in situ. The analysis of shoreline changes using 4 Landsat images (2002, 2007, 2015 and 2018) at DSAS approachs with the NSM (Net Shoreline Movement) for distance change and EPR (End Point Rate)for the rate of change. Shoreline changes in West Rangsang district are influenced by strong wave of Malacca Strait, during the last 16 years there has been accretion in seigomeng, melai, part of bantar andanak setatah village, with the highest average accretion rate of 8.88 m / year, mean distance change 138.1 m and the area of change 108 Hecktar and abrasion in the village of Permai, part of Bantar village and children setatah with average highest abrasion rate 4,93 m / year with mean distance change 76,6 m and area 1101 Hecktar. The wave energy is 2.94 until 4.9 Nm / m2 and the current velocity is 0.40 until 0.50 m/s with the flat beach tipe.Keyword: Shoreline Changes, Rangsang Barat, Accretion, Abration, Landsat image, DSAS
Influence of Different Density Towards Survival Rate and Growth of Red Tilapia (Oreochromis niloticus) In Salty Water Using Recirculation System Situmorang, Romaida; Mulyadi, Mulyadi; 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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ABSTRACTThe aim of research was to find out the effect of different densities on the growth and survival rate tilapia fish (Oreochromis niloticus) brackish water using a recirculation system. The research was conducted in 35 days observation, started from March to May 2018 at UPT Teluk Papal Village, Bantan districts, Bengkalis regency, Riau Province. The test fish used are red tilapia fishs (Oreochromis niloticus) that  have a measurement of 3 – 5 cm. The method used this research is Completely Randomized Design (CRD), with 5 treatments and 3 replications each. The difference of density of dispersion at each treatment P1, P2, P3, P4 and P5 are 25, 20, 15, 10, dan 5 fishs/10 liters in brackish water with recirculation system. The fish are fed adlibitum at 08.00, 12.00, dan 16.00 WIB. The results showed density did not have effect on survival rate  (P> 0,05), but has an effect on absolute weight growth, length total and daily growth rate (P> 0,05). The value of growth and survival rate is the  best obtained from 5 fishs /10 liter stocking density treatment with an absolute weight of 6.06 grams, an absolute length of 3.71 cm, a specific growth rate of 5.97% and a 100% survival rate. Keywords: Tilapia, density, growth, survival rate, recirculation systems 
BIOEKOLOGI Nerita costata (GASTROPODA) IN MANGROVE REGION KUALA KAMPAR DISTRICT DISTRICT INVITATION OF RIAU PROVINCE M. Hambali M. Hambali; Sofyan Husein Sireger; Syafruddin Nasution
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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ABSTRACT The study was conducted in March 2018. Sampling was conducted in the territorial waters of Kuala Kampar Sub-district, Pelalawan District. The purpose of this research is to know the ecology of N.costata, covering environmental condition, organic matter, population density, frequency of size and relationship of organic matter content in mangrove forest of Kuala Kampar Subdistrict. The method used in this research is survey method. The sampling station is determined purposively, by considering the condition of the sampling region. Each station has 3 transects and each transect consists of 3 plots so that there are 9 stations plot. Based on the research result, it can be concluded that Kuala Kampar water environment condition is still good, the highest organic material is at station II that is 14,89% and the lowest is at station I that is 6,77%. Population density between stations and between zones in Kuala Kampar Sub-district on N. costata ranges ranges up to 4.33-8.67 ind / m2. The class-size distribution of this dominating species found in the study sites was a size class (2.1-3.0 cm). The effect of organic content of sediment with N. costata density in research area was moderate with correlation coefficient value (r) = 0,30. Keywords: Density, N. costata, Organic Sediment
BUSINESS ANALYSIS OF CULTIVATION OF PATIENT FISH (PangasiusSutchi) IN THE POOL IN RIVER VILLAGE LIPAI SUB DISTRICT GUNUNG SAHILAN KAMPAR DISTRICT RIAU PROVINSCE Deby, Rio; Hendrik, Hendrik; Nugroho, Firman
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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ABSTRACT Research on the Analysis of Patent Fish Enlargement Business (PangasiusSutchi) In pond was conducted in May 2018 in GunungSahilan Sub-District, Kampar District, Riau Province. This study aims to (1) find out the amount of investment costs in the business of fish enlargement Patin in ponds, (2) to analyze the feasibility of Patin fish enlargement in the pond. The method used is survey method which includes observation, interview and documentation.  Based on the result of the research (1) the input in Patin fish enlargement effort is density of stocking in each pond with the width of 300-850 m2 as much as 4500-12750 tail / pond and the output in Patin fish enlargement business is the amount of production in each pond as much as 1507 -4271 Kg / pool. average production cost incurred at Patin fish raising business with 300-850 m2 pool area IDR 23.628.850, - / harvest up to IDR 67.123.050, - / harvest with total receipt received IDR 27.126.000, - / harvest to IDR 76.878.000, - / harvest and profit received IDR 3.497.150, -panen to IDR 9.754.950, - / harvest and (2) Patin fish breeding business in pond in Sungai Lipai worthy of RCR > 1, with FRR value> 6,02% and PPC value that is between 7,56-8,36 per period or ± 7 year 8 months. Keywords: Patin Fish Enlargement, Business Analysis, Lipai River
COMPARISON OF CATCHING CRABS (Scylla sp) WITH MEAT AND CHICKEN BAITS USING PENTO FISHING GEAR IN SEA OF BATUBARA NORTH SUMATERA PROVINCE Alman Aloisius Sirait; Arthur Brown; T. Ersti Yulika Sari
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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ABSTRACT            The research was do in Decembre 2017 atTanjung Tiram village, Tanjung Tiram Subistrict, Batubara District, Nort Sumatera Province. The study aims to find effective feed and produce more catches using pento fishing gear. The research method used is the experimental method that is the comparison of the catch of crabs using bait fish and chicken on pento fishing gear in sea  of Batubara. Repeating 10 times with 4 treatments. In one day was doing 2 times catches, setting  start at high tide around 14.00 to 15.00 WIB, and hauling around 18.00 until 18.30 WIB. The results showed the most total catch with 15 chicken head bait and at least 8 stingray bait. And based on the weight is chicken head bait 2280 grams and lowest stingray bait 1230 grams. Based on the ANAVA test results for the number of catches, there was no effect of bait on the  number  of crab catches different from  weight, there was effect of bait on the weight of crab catch. So that further tests Student Newman Keuls (SNK), which proves that there is no effect of the bait on the catch by either number or weight of crab catches. Then H0 is accepted and H1 is rejected.Key word: Pento Fishing Gear, Batubara, Crabs (Scylla sp), Baits
The Relationship of the Production and Demand of Green Catfish (Mystus nemurus) In Sungai Paku Village, Sub-District of Kampar Kiri, District of Kampar, Riau Province Rima Wardani; Firman Nugroho; Hazmi Arief
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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ABSTRACTThe research about the relationship of the production and demand of Green Catfish (Mystus nemurus)was conducted on May, 2018 in Sungai Paku Village, Sub-District of Kampar Kiri, District of Kampar, Riau Province. This research was aimed to find the development of the production and demand, and also its relationship and influence between of the production and demand. The method used was Survey Development Research method. Based on the results of research that the development of demand Green Catfish (Mystus nemurus) show a upward trend and development of the production in fluctuation of Green Catfish, but in 2017 show a downward trend. The relationship of the production and demand is as much as 30%, based on the interval coefficient relations between  two vabiable is low. Ratings point in the table R2 explained that demand for Green Catfish affected as many as 9,1% of the volume of production, this means that if demand for Green Catfis as many as 100 Kg, the production result is only able to meet demand as many as 9 Kg. While the remaining as many as 91 Kg is deficiency the production of caused by factors production not discussed in this case.  Key words:, Green Catfish, Development, Demand, Production.
The Effect of Stocking Densityon the Growth andSurvival Of Red Nile Tilapia Seeds (Oreochromisniloticus) With Bioflok Technology On Peat Swamp Waters Nurmi Yaningsih; Iskandar Putra; Mulyadi Mulyadi
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 August 3 until September 3 on 2017 at Aquaculture Technology Laboratory, Department of Aquaculture, Faculty of Fisheries and Marine University of Riau. The purpose of this research is to know the best stocking density on growth and survival of red nile tilapia seeds(Oreochromisniloticus) with bioflok system on peat swamp waters. The method used is Completely Randomized Design (CRD) with 1(One) factor consisting of 4(Four) treatment levels and three replicates (12 Unit aquariums). The standard of treatment used is stocking density 60 heads per container, 70 heads per container, 80 heads per container, and 90 heads per container. During 30 days maintenance of the best treatment on stocking density 60 heads per container with an absolute weight of 1.59 gram, absolute length 2.38 grams, daily growth rate 2.77% days, efficient feed 87.22%, feed conversion ratio 1,15 and 87.22% of survival rate.Key word : Red nile (Oreochromisniloticus),stocking density, bioflok system, Peat Swamp Water
The effectiveness of combined anaerob (pieces of brick, gravel and sand media) and aerob (coconut fibers and charcoal media) biofilters in reducing BOD5 and COD in the butchery liquid waste Fitriana Sinaga; Sampe Harahap; Eko Purwanto
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Abstract Thebutchery liquid waste is rich in BOD5andCOD  and it need to be processed before being flown to the environment. To understand the effectiveness of combined anaerob-aerob biofilters in reducing the BOD5and COD in the butchery liquid waste , a study was conducted in February -  March 2018. The anaerob tanks were completed with pieces of brick, gravel and sand media (60 cm height), while that of the aerob was completed with coconut fibers and charcoal media (40 cm height). Around 215 L waste was kept in the anaerob tanks for 12 days and then it was flown to the aerob tanks and was kept for 10 days. Samplings for water quality parameters (BOD5, COD, DO and pH) was conducted 2 times, before the waste was processed and by the end of the experiment. The processed waste was then used for rearing Spirulinasp, 100 ml of Spirulina stock (104 cells/ ml) were reared in 1 liter of processed waste. Spirulina density was checked everyday. Results shown that the BOD5 reduced, from 1,307 mg/L to 113 mg/L(the effectiveness was 91.35 %); COD reduced, from 7,430 mg/L to 182 mg/L ( the effectiveness was 97,55 %); DO improved (from 1 mg/L to 5 mg/L) and pH also increased, from 6 to 8. The Spirulina density peaked by the 7th day, it was 4,074,666 cells/ml. Based on data obtained, it can be concluded that the use of anaerob-aerob biofilter was effective in improving the butchery waste water quality. Keywords : Organic waste, Anaerob tanks, Aerob tanks, Spirulina sp.

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