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Nofrizal Nofrizal
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Humanities Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Public Health Social Sciences

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BYCATCH AND DISCARD STUDY ON CATCHING DEVICES IN PRAPAT DISTRICT KABUPATENBENGKALIS VILLAGE, RIAU PROVINCE Adjeng Fitriya Febriany; Alit Hindri Yani; Nofrizal Nofrizal
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol. 9 No. 1 (2022) Edisi 1 Januari s/d Juni 2022
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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 ABSTRACT A bycatch is another catch that is accidentally caught by the net. where the catch is unwanted or not the main target. Bycatch is usually dumped into the sea or used for human consumption or for livestock. This study aims to identify the composition and proportion of the main catch (main catch), bycatch and discarded catch in the stonet. The method used in this research is a survey method, namely by making direct observations in the field to see the catch of the grinding tool, then each catch is identified including the type of fish, the number of individual fish and the weight of the fish (primary data). Keywords:By-catch and discarded, stinging gear
EFFECT OF RAMI FIBER IMMERSION DURATION ON SALAM LEAF EXTRACT AS A PRESERVATIVE FOR FISH CATCHING Poltak Fanjay N. Sitepu; Nofrizal Nofrizal; Isnaniah Isnaniah
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 aim of this research is to find out how long the immersion effect of flax fiber on bay leaf extracts is to determine the value of breaking strength and stretching of flax fiber. The method used in this study is an experimental method using a one-factor Complete Tool Design, which is by experimenting the length of time the flax fiber immersion in bay leaf extract as a fishing gear with immersion time for 0 weeks to 12 weeks. The value of breaking strength and elongation of the fibers were tested using Breaking Strength Tester. The value of breaking strength of flax fiber that had been soaked decreased in the 1st and 2nd weeks and then increased every week and the highest peak in the 7th week was 3.35 kgf / mm2 but in the 8th week until the 12th week decreased. The value of flax fibers has increased unstable. The highest peak in the first week is 26.60 mm and the lowest flax fiber in the second week is 21.40 mm. The results are seen that bay leaf extract can increase the value of breaking strength and elongation of flax fiberKeywords: breaking strength, elongation, flax fiber,salam leaf extract
PRODUCTIVITY AND FEASIBILITY OF CATCHING BUSINESS WITH CATCHING BOAT BOAT AT THE BUNGUS OCEAN FISHING PORT WEST SUMATRA Sukmawati Sukmawati; Bustari Bustari; Nofrizal Nofrizal
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 8, No 1 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract This study aims to determine the value of productivity and feasibility of fishing with boat lift gear at the Bungus Ocean Fishing Port, West Sumatra. The research method used in this study is a survey method,and data analysis was done by descriptive analysis. The analysis carried out is productivity analysis and financial analysis. The results showed that the average productivity of the ship was IDR. 11,206,455, - per GT with the highest productivity value for productivity per GT in 2020, which was IDR. 18,844,333,- per GT. As for productivity per trip the average ship is IDR. 29,558,618,- per trip with the highest productivity value for productivity per trip of IDR.47,258,000,- per trip. The highest productivity per crew member is IDR 47.258.000,- per crew member. Analysis of economic efficiency on sample vessels shows that the efficiency value of capture fisheries business with boat lift fishing gear with small and large ship sizes can be said to be efficient. This can be seen from the efficiency value of these vessels, which is worth 1. However, the fishing effort with boat lift gear as a whole can be said to be efficient with an average efficiency value of 1.573. This indicates that the fishing effort using the lift net fishing gear carried out by fishermen at the Bungus Ocean Fishing Port, West Sumatra is feasible to develop because of its efficiency value 1.Keywords: Boat Charts, Financial Analysis, Productivity 
THE LEVEL OF SATISFACTION OF WITHMOORING SERVICES AT THE COASTEL FISHING PORT OF CAROCOK TARUSAN SOUTH COAST DISTRICT WEST SUMATERA PROVINCE Rossy Sri Rahmadani; Jonny Zain; Nofrizal Nofrizal
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 8, No 2 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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AbstractThe purpuse of this study was to determine the level of satisfaction of fisherman with mooring service at the carocok tarusan coastel fishing port (PPP).  The method used in this research is the survey method.  The survey in this study is about the level of satisfaction of fisherman with mooring services at the Carocok Tarusan beach fishing port.  The method of data collection in this research is by statified random sampling.  The data collection used in this study is primary dan secondary data.  The first stage of data prosessing is through the process of testing the validity and reliability first.  After the question naire is declared valid, then measurement are carried out using analysis custumer satisfaction index and performance analysis.  Custumer Satisfaction Index used to determine the level of attributes and services of mooring service while it is used to analyze custumer satisfaction with a product of service, from the result of this study, the level of satisfaction of fisherman with mooringservices at PPP Carocok Tarusan with the CSI analysis method is 91,08 %.  Which means the level of satisfaction is the very satisfactory category.Keyword :Survey,Customer Statisfaction Index, Importance Analysis
THE EFFECT OF TRICHOGASTER PECTORALIS SEPAT FISH ON SWIMMING RESISTANCE IN VARIOUS FLOW SPEEDS Denita Rahman; Nofrizal Nofrizal; Usman Usman
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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ABSTRACT This research was conducted in December 2018. The purpose of this study was to determine the characteristics of conjoined sepat fish in each size. The specific purpose of this study is to examine the swimming endurance of conjoined sepat fish, knowing the maximum speed, prolonged speed and brust speed of conjoined sepat fish of various sizes. This research was conducted using an experimental method. The research carried out uses siam size 10 cm with maximum sustained speed <0.51 BL / sec, siam size 15 cm <0.43 BL / sec and for siam size 20 cm <0.24 BL / sec. Siamese sepat fish size 10 cm prolonged speed ranges from 0.51 to 4.73 BL / sec, Siamese sepat fish size 15 cm prolonged speed ranges from 0.43 to 3.84 BL / sec and for Siamese sepat fish size 20 cm speed prolonged ranges between 0.24-3.31 BL / sec. Siamese sepat fish size 10 cm burst speed is 6.73 BL / sec, Siamese sepat fish size 15 cm burst speed is 4.77 BL / sec and for conjoined fish size 20 cm burst speed is 3.84 BL / sec. Swimming speed and endurance of the pool are negatively correlated if the speed is higher then the swimming ability will be reduced and if the swimming speed is high then the endurance of the swimming pool decreases.  Keywords: Endurance, swimming speed, flume tank, maximum swimming spe
EFFECT OF RAMI FIBER IMMERSION DURATION ON TURI LEAF EXTRACT AS A PRESERVATIVE FOR FISH CATCHING Nurhanifah Nurhanifah; Nofrizal Nofrizal; Isnaniah Isnaniah
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 aim of this research is to find out how long the immersion effect of flax fiber on turi leaf extract is to determine the value of breaking strength and elongation of the fiber. The method used in this study is an experimental method that is by experimenting the length of time soaking hemp fiber in turi leaf extract as a fishing gear with soaking time for 0 weeks to 12 weeks. The value of breaking strength and elongation of the fibers were tested using Breaking Strength Tester. Data analysis using complete random design. The value of breaking strength of flax fiber that has been soaked has increased every week and the highest peak in the 9th week is 2.8 kgf / mm2 but in the 10th week through the 12th week has decreased. The value of flax fibers has increased unstable. The highest peak of elongation is at week 1 is 28.55 mm and the lowest stretch of flax fiber is at week nine which is 22.65mm. The results show that turi leaf extract is able to increase the breaking strength and elongation of flax fiber.Keywords: breaking strength, elongation, flax fiber,turi leaf extract
STUDI KAJIAN HASIL TANGKAPAN SAMPINGAN (BYCATCH DAN DISCARD) ALAT TANGKAP PAYANG PADA KAPAL KM MAHKOTA DI PELABUHAN PERIKANAN SUNGAILIAT PROVINSI BANGKA BELITUNG Irwan Sinaga; Nofrizal Nofrizal; Jonny Zain
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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ABSTRACT        Payang is a trawler tug that has a small pocket size. This makes the payang fishing gear not selective about the size of the fish and the types of fish that are targeted by the catch. If this fishing gear is left then it will have a negative impact on the continuation of fish resources, especially where the fishing gear is operated. The purpose of this study is to calculate the composition and proportion of the main catches (main catch), bycatch and bycatch. It is hoped that this research can illustrate the amount of fish stock pressure available at the Payang fishing gear. The method used is a survey method that directly measures the fishing gear and identifies the catch of the payang fishing gear. Based on the percentage of the composition, the type of payang catches consists of 8 types. Based on the composition, the types of payang catches consist of 8 types of individuals, consisting of 2 main catches with a percentage of 25%, 5 types of bycatch with a percentage of 62.5% and 1 type of catch catch with a percentage of 12.5%. This study also found that the payang also caught fish with a size below maturity, namely yellow strait fish (Selaroides leptocepis) with a percentage of fish below the adult size caught 28%, bentong strait fish (Crumenopthaimus selar) with the percentage of fish below the adult size caught 25%, and even mackerel (Rastrelliger brachysoma) reaches 67.25% of fish below the adult size caught. Therefore, it can be concluded that Payang fishing gear even though it is a fishery fishing gear that has enough potential to change the structure of aquatic biodiversity.Keywords: bycatch, discard, payang, fish resources, main catch.
SELECTIVITYBOTTOM GILLNET AT DESA NARAS 1 KECAMATAN PARIAMAN UTARA PARIAMAN CITY PROVINSI SUMATERA BARAT Maisuri Dewi; Alit Hindri Yani; Nofrizal Nofrizal
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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 ABSTRAKPariaman City is a coastal and marine area, where fish products have an important role in the economic cycle, one of which is in Naras Village 1. This study aims to determine the selectivity of mesh size on the composition and size of catches on gill net. The method used in this study is experimental fishing, a method that uses a sample of objects to be observed. The results of this study indicate that there are 9 species of fish caught on a mesh size of 1.5 inch and 1.75 inch,kurisi (Nemipterus hexodon), barakuda (Sphyraena barracuda), mojjaras (Eucinostomus),selar kuning (Selaroides leptolepis), beloso (Saurida tumbill), parang-parang (Chirocentrus nudus), kembung (Rastrelliger spp), tenggiri (Scomberomorus commersoni), and kaci-kaci (Painted sweetlips). Dominant fish caught in both mesh sizes are 320 fish kurisi or 41% of the total catch, with a total length of 13.5 - 25.7 cm, fork length 11.5 - 23.2 cm, height 3 , 2 - 5.6 cm and weigh 40 - 170 g. Difference in mesh size that is not too large only gives a slight effect both on the total number of catches and the average fork length of fish caught. The most selective basic gill nets are gill nets with a mesh size of 1.75 inches, this is because the mesh size of 1.75 inches only catches large-sized fish that are worth catching and can pass small fish. Keywords: selectivity, bottom gillnet, fish kurisi,naras 1 village.
CAPABILITIES OF INDIGENOUS FISH SWIMMING WITH NUMBER OF DIFFERENT GROUPS IN RURAL TENGKAN CHANNELS Dessy Kristina; Nofrizal Nofrizal; Isnaniah Isnaniah
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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ABSTRACTDessykristina65@gmail.com   Knowledge about fish behavior is highly needed in developing effective fishing techniques and methods. One of the fish behaviors that can be learned for fishing gear is fish swimming activity. Fish swimming activities can be divided into three large groups, namely suistained, prolonged, and swimming speed. This study uses an experimental method / observation that is the speed and endurance of fish swimming tested on a flume tank with different current speeds in each group of tilapia and this research was carried out in March 2019 at the Fishing Equipment Laboratory, Department of Resource Utilization of the Faculty of Fisheries and Ocean University of Riau. The purpose of this study is to determine and test the endurance of tilapia swimming from various types of fish at different current speeds and to determine the swimming speed and maximum swimming speed.swimming speed maximum sustained of 5 tailed tilapia is 2,2 BL / sec,swimming speed maximum sustained of 10 tailed tilapia is 2,3 BL / sec, andswimming speed maximum sustained of 15 tailed tilapia is 2,0 BL / seconds. Thespeed prolonged of the 5-tailed tilapia group is 2.2 - 8.2 BL / sec, thespeed prolonged of the 10-tailed tilapia group is 2.3–8.0 BL / sec, and thespeed prolonged of the 15-tailed tilapia group is in the range of 2.0 -7.7 BL / sec. These results indicate that at this speed it is good to use active fishing gear to catch tilapia in waters. After knowing the speed of swimming, this tilapia can make an efficient fishing gear in fishing so that it increases fishing yields for fishermen.  Keywords: Fish swimming speed, Tilapia swimming endurance, Water current 
The current velocity effect of the appearance and performance of Jermal fishing gear Harisno Harisno; Nofrizal Nofrizal; Isnaniah Isnaniah
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 in January 2018 in the fishing gear laboratory, Utilization of Fishery Resources Department, Faculty of Fisheries and Marine, University of Riau. The purpose of this research is to know the effect of the current on the appearance of jermal fishing gear and the ideal current velocity for jermal fishing gear. Measurement of the current velocity in the flume tank at the start of the 5-50 Hz frequency measured using a current meter device, obtained the lowest speed of 2.7cm / sec and the highest 47.2 cm / sec indicates a positive correlation, the higher the frequency used, the more high current velocity generated. The result of this research is the higher the current velocity, the higher the position of the capture device from the bottom of the water, the left and right shift position, the period of up and down movement and the period of left-right movement of the jermal fishing gear and the ideal current velocity for the jermal fishing gear that obtained in this study is 11.1 cm/sec, because at this speed all the capture part is open, and also the value of the movement and the resulting period is small.Keyword: current velocity, jermal fishing gear, flume tank
Co-Authors Adjeng Fitriya Febriany Alif Alfon Wildanrusyda Alit Hindri Yani Andi Amir Muhammad Yusuf Mukhtar Andrey Arzil Aristya Ardhitama Arizal N Arthur Brown Arya Afsha Audina Agustin Syam Aura Atha Alysia Putri Balqis Fahira Ninggrum Bustari Bustari Christia Dharma Putra Capah Dadan Kusdiana Denita Rahman Dessy Kristina Dody Rahmadi Dwita Nurmala Eka Wahyuni Ertawati Ertawati Fanisa Rosa Granadia Farhan Ramdhani Femi Riza Fiqi Giffari Gesit Yudha Harisno Harisno Iis Haryani Imam Suprayogi Irwan Sinaga Jannah Jannah Jonny Zain K. Agenti Pardosi Lisna Rosmayati Luh Putu Ratna Sundari Maisuri Dewi Mardianto Manan Meisya Febiola Mirna Ilza Nodi Marefanda Norman Suata Simamora Noval Novela Nurhanifah Nurhanifah Nurhikmah Trisnaningsih Paramita Widiastuti Poltak Fanjay N. Sitepu Romie Jhonnerie Rossy Sri Rahmadani Salsabillah H Samuel Firmando Pakpahan Suci Nabila Miftahul Sukmawati Sukmawati syaifuddin syaifuddin Syarah Audia Usman Usman Viktor Amrifo Welly Razali Wita Dwika Listihana Yomi Tri Satria Yone Ayounda Yusni Ikhwan Siregar