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All Journal Jurnal Teknologi Perikanan dan Kelautan Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut Jurnal Natur Indonesia Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Jurnal Ilmu Lingkungan Jurnal Ilmu Perairan (Aquatic Science) Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Asian Journal of Aquatic Sciences Journal of Coastal and Ocean Sciences Journal of Rural and Urban Community Empowerment Dinamika Lingkungan Indonesia Jurnal Perikanan dan Kelautan Jurnal Perikanan Jurnal Perikanan Terapan Jurnal Natur Indonesia
Joko Samiaji
Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Library & Information Science Materials Science & Nanotechnology Physics Social Sciences

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KOMPOSISI JENIS DAN KELIMPAHAN FITOPLANKTON PERAIRAN LAUT RIAU Dewi Ariana; Joko Samiaji; Syafruddin Nasution
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This research was conducted in April 2013 and was located at Riau marine waters. Samples were analyzed in the Biology Laboratory of Marine Science Department of Fisheries and Marine Science Faculty of Riau University. The aim of this study was to observe the phytoplankton communities. This research used survey method. The study found 31 species of phytoplankton, these were 19 species from Bacillariophyceae, 9 species from Dinophyceae, 2 species from Chlorophyceae and 1 species from Cyanophyceae. Phytoplankton was dominated by group of Bacillariophyceae (Diatoms) 61%. The other groups comprising of Dinophyceae 29%, Chlorophyceae (7%), and Cyanophyceae 3%. Phytoplankton abundance varied from 87-593 ind/L, the higest value in station 9 Zone III and the lowest value in station 11 zone III. Whereas the highest value of zone abundance was zone II 443 ind/L and the lowest was zone I 253 ind/L. Phytoplankton community was dominated by the group of diatoms, such as Nitzschia sigma, Thallasiothrix longissima, and Thallasiothrix delicatula.Keywords: Marine Phytoplankton, Bacillariophyceae, Marine of Riau1)
ANALYSIS OF OIL CONTENT AND DIATOMS ABUNDANCE IN SIMBUR NAIK WATERS, TANJUNG JABUNG TIMUR REGENCY JAMBI ISLAND PROVINCE Ilham Ilham; Bintal Amin; Joko Samiaji
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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Abstract The research was conducted in August2018 with the aim to analyze the total oil content,determined type and abundance of diatoms, also determined the correlation between oil content and abundance of diatoms in the waters of Simbur Naik village, Jambi Province. The method is used in this research wasSurvey method consisted of four stations with three repetitions. The average value of oil content ranged between 0,0529 –0,7289 ppmand the abundance of diatoms were between 138,33 ind/ℓ - 417 ind/ℓ.The diatoms which consist of 15 speciesChaetocerossp, Fragilariasp,Surirellasp, Gyrosigmasp, Cymbellasp, Coscinodiscussp, Isthimiasp, Prorocentrumsp, Diploneissp, Nitzschiasp, Synedrasp, Rhizosoleniasp, Thalasssionemasp, Leptocylindrussp, andAulacoseriagranulata. The coralations between total oil content and the abudance of diatoms have a weak negatife relationship which meant the oil content does not significantly effect the abudance of diatoms. The regression equation was y = 300,1+ 60,78x and the coefficient correlation (R2 = 0,014);(r) = 0,118.Keywords:  Abundance, diatoms, oil contenc, Jambi.
Study of Marine Fishing Grounds Based on the Content of Chlorophyll-a And Sea Surface Temperature Via Satellite Imagery of Aqua MODIS of Marine Areas of Rokan Hilir Regency Sunarti '; Joko Samiaji; Mubarak '
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The study was conducted in October-December 2013. The area of studywas in Rokan Hilir coastal waters, while data analysis was done in the PhysicalOceanography Laboratory, University of Riau, Pekanbaru. The method used wassurvey method with the materials were obtained from the imagenary satellite byusing Aqua MODIS level 1b. The analysis was supported by using software ofEnvi 4.5 and Arcgis 10.The result showed the chlorophyl-a concentration in Rokan Hilir regencywaters varied for each month. In October the value of chlorophyl-a ranged from0.211-1.736 mg/m³, in November the concentration ranged from 0.217-1.731mg/m³, whereas in December the value ranged from 0,286-1,914 mg/m³. The seasurface temperature for each month showed as follows: in Oktober 25°c to 30°c,in November 26°c to 30°c, in December 29°c to 32°c, respectively. The visualanalysis showed that the most potential fishing grounds were found along thecoastal areas of Sinaboi, Sei Nyamuk, and Pulau Halang.Keywords: Fishing Grounds, Chlorophyll-a, Sea Surface Temperature AquaFashionable, And Marine Areas Rokan Hilir.
MOLLUSCA AND ARTHROPODA ABUDANCE IN THE ECOSYSTEM AREA OF MANGROVE SUNGAITOHOR VILLAGE KEPULAUAN MERANTI REGENCY, RIAU PROVINCE Said Nazman Arif; Joko Samiaji; Sofyan Husein Siregar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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ABSTRACT  This research was conducted in November 2017 - April 2018 in the ecosystem area of mangrove Sungaitohor Village, Kepulauan Meranti Regency, Riau Province. The aim of the study was to determine the type and abundance of molluscs and arthropods, as well as the species diversity index (H'), uniformity index (E) and dominance index (C) of molluscs and arthropods. The method used was a survey method consisting of 3 stations with transect perpendicular to the coastline. The number of molluscs and arthropods at the study area was 10 species, consisting of 8 species the Molluscs and 2 other species from Arthropods phylum. The average abundance of molluscs and arthropods ranged from 2,11 x 104 – 4,00 x 104  ind/ha and the abundance of molluscs and arthropods between stations was significantly different (P < 0.01). The average Diversity Index (H') was 3.0628 indicating high diversity; the average Dominance Index (C) was 0.1333 indicating that no spesies dominates the site. The Diversity Index (E) was 0.9367 indicating the uniformity of organisms in a balanced state and there was no competition for  places or foods.  Keywords: abundance, molluscs and arthropods, mangrove ecosystem, meranti
THE EFFECT OF MANGROVE STANDING DENSITY ON CARBON STOCK POTENTIAL IN MARINE COASTAL OF SUNGAITOHOR VILLAGE MERANTI DISTRICT OF ARCHIPELAGO MERANTI RIAU PROVINCE Muhammad Wahyu Hasibuan; Joko Samiaji; Musrifin Ghalib
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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AbstractMangrove is a tree that normally grows in the intertidal zone of marine coastal environments. The study aim to analyze density of mangrove, to analyze the biomass content, carbon content and ability to absorb carbon dioxide gas in mangrove ecosystem, to analyze the effect of mangrove density on biomass, carbon stock and CO2 uptake and to analyze the comparison of biomass, carbon stock and CO2 uptake between stations. This research was held in November 2017 by survey method and used the data of mangrove species, it’s number and diameter of breast height (DBH) on each sub plot. Measurement of mangrove biomass was done allometric equation method. The result of carbon stock and CO2 uptake in mangrove indicates that Station I was higher than Station II and III.  The result of calculation density of mangrove was equal to 2.839,50 ind/ha. The average yield of mangrove carbon stock and CO2 uptake was 670,89  ton/ha and 2.459,35 ton/ha. As for the average yield of soil organic carbon was 1.758,65 tons/ha. The density of mangrove biomass, carbon content and CO2 uptake which has a strong relationship. The content of biomass, mangrove carbon and CO2 uptake were significantly different (p <0.05) among stations. Keywords: Mangrove, Carbon, Sungaitohor Village
The Study Of Chlorophyll- Content By Using Aqua Modis Satellite Imagery In Marinewaters Of Rokan Hilir Regency Riau Province Raja Siagian; Joko Samiaji; Mubarak &#039;
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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The research was conducted from October until December 2013 at marinewaters of Rokan Hilir Regency Riau Province. The purpose of this research was toinvestigate the chlorophyll- content using Aqua MODIS satellite image whichwas presented in the form of a map. The method used was case study method. Theresults showed the chlorophyll- concentrations were not varied greatly. InOctober and November 2013 the lowest values were 0,71 l and 0,69 mg/lrespectively, whereas the highest value in both months was 1,73 mg/l. Thechlorophyll- values in December 2013 ranged from 0,77-1,91 mg/l. The studyfound that the high values of cholophyll- in general were shown increasingtowards the coastal areas.Key words : Chlorophyll- , Aqua MODIS and Rokan Hilir Regency
Habitat Characteristics and Reproductive Aspects of Olive Ridley Sea Turtles (Lepidochelys olivacea) in Sunur Beach of Pariaman City of West Sumatra Province Anggi Irfan Hasibuan; Joko Samiaji; Syafruddin Nasution
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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Research has been conducted in the month of June to August 2014 at Sunur Beach of Pariaman City of West Sumatra Province. The purpose of this study was to investigate the characteristics of nesting habitat of sea turtle (Lepidochelys olivacea), fecundity, egg diameter, and hatching numbers associated with the size of the parent turtle. The results showed the characteristics of the nest were as follows: the average nest depth was 37.48 cm, nest diameter was 20.66 cm, the average temperature was 29.92 °C nest surface, the temperature inside the nest was 29.25 oC, sediment texture size 1,55 mm and the distance from the nest highest tide towards the ground 1.80 m. The average length was 67 cm nest, nest an average width was 19.8 cm, the average number of eggs was 105.6, the average diameter was 38.02 mm eggs. The average number of eggs hatching success was 93.33%.   Kata Kunci : Lepidochelys olivacea, nesting habitat, reproduction, Sunur Beach  
MARINE ECOTOURISM DEVELOPMENT STRATEGY OF TORAN ISLAND TOURISM AREA OF PIEH AND SEA ISLAND WATERS AROUND WEST SUMATERA PROVINCE Irvan Dwi Putra; Joko Samiaji; Afrizal Tanjung
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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ABSTRACT This research was carried out in March 2019 on Toran Island, TWP Pieh Island and the Sea in the Surrounding West Sumatra Province. The purpose of this study was to determine the potential of marine ecotourism on Toran Island and its development strategy. The method used in this study is a survey method and the determination of sampling points using purposive sampling method. Data collected includes respondents' opinions, identification of ecotourism activities and measurement of water quality. The results of this study indicate that Toran Island has the appropriate potential to be developed as a marine ecotourism area. The results of the calculation of the land suitability index value for the recreational tourism beach category are at an average value of 85.2%. This value indicates that Toran Island is very suitable to be used as a marine ecotourism destination. The results of the SWOT analysis show several alternative management strategies that are appropriate for the development of marine ecotourism on Toran Island, namely: 1). Developing tourist objects and attractions by increasing facilities and infrastructure as well as tourist attractions with the quality and quantity of tourist objects that are more attractive and provide a distinctive charm for tourists. In this case the Toran Island attraction presents a tourist attraction in the form of the natural charm of the beach with white sand. 2). Developing a partnership between the local community and the government in terms of developing tourism facilities and businesses at the Toran Island tourist site. 3). Expanding promotion and marketing of Toran Island tourism objects from various local, regional, national and international market segments with a variety of promotional facilities and optimal tourism services.  Keyword: Potential, Marine Ecotourism, SWOT Analysis, Toran Island            
HUBUNGAN KANDUNGAN NITRAT DAN FOSFAT DENGAN KELIMPAHAN DIATOM DI PERAIRAN PANTAI PANIPAHAN KABUPATEN ROKAN HILIR PROVINSI RIAU Yuke Constina; Bintal Amin; Joko Samiaji
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT               This study was conducted in April 2017 by taking samples from four stations with three replications in each sampling station. The resultsof the study revealed that the highest nitrate concentrations in waters was 0,457 ± 0,2571 mg/L in Station 2, while the lowest nitrate concentration was 0,206 ± 0,0115 mg/L inStation 4. The most common planktonic diatoms species found were Isthmia sp and Hemialus sp. Linear regression analysis showed that the relationships of nitrate and  phosphate concentrations with diatom abundance  is shown as Y = 4744,7 + 5080,8x (R² = 0,1094; r = 0,330) and Y = 4767,2 + 9343x (R² = 0,0611 and r = 0,2471). Judging from the r value of those equation, the coastal waters of Panipahan can be categorized as having moderate (Nitrate) and weak (phosphate) fertility, respectively.  Keywords: Nitrate, Phosphate, Diatom Abundance, Panipahan Coastal Waters
Distribution of the Abundace Fur Shell (Anadara inflata) in Intertidal Coastal Water of Tanjung Balai Asahan North Sumatera province Ruth Natalia. S; Syafruddin Nasution; Joko Samiaji
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
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This research was conducted from January-February 2013 in the coastalwaters in Tanjung Balai Asahan, North Sumatera Province. The aim of thisresearch was to understand the pattern distribution and density of fur shells (A.inflate). Survey method was applied on this research where data were obtained bydirect observation in the field. The samples of shells fur were analyzed in thelaboratory of Marine Biology, of Riau University. Water quality parameters weremeasured in situ.The results showed that the pattern distribution of fur shells (Anadarainflata) was in a group. The density of A. Inflata ranged from 125 ind/m2 to 136ind/m2. These values were not significant different when they were statisticallytested. Moreover, the water quality parameters were in the sufficient range formarine fur shells (A. inflata) survival.Keywords: Anadara inflata, distribution, Tanjung Balai Asahan, density
Co-Authors ', Marini Abd. Rasyid Syamsuri Afrizal Tanjung Ahmad Saripuddin Akbar, Aidil Rahmad Algino Panuntun Akbar Andi Febrian, Andi Anggi Irfan Hasibuan Anne Rumondang Aras Mulyadi Ardi Gunawan Siregar Aslim Rasyad Asmika Harnalin Simarmata Ayu Agustina Banjarnahor, Novia Bethanya, Ela Nanda Bintal Amin Chaniago, Rizki Dalimunthe, Salmi Patima Desmarina, Y. Despela, Despela Dessy Yoswaty Dewi Ariana Dodi Tri Putra Sitompul Efriyeldi, Efriyeldi Elfis Suanto Elizal, Elizal Enjelina Maria Magdalena Manurung Enny Herawaty Simamora Erwan Efendi Fani Fadli Femi Riza Fitria Wahyuni Fitriansah, Heru Fuady, Muhammad Ikhram Fuady Ikhram Fuah, Ricky Winrison Ghina Salsabila Ginting, T.B. Hafli, R. Diddin Mifdhol Hari Mulyadi, Hari Hasibuan, Ari Permel Hendra Kharisma Huda, Mhd. Aidil Huda, Muhammad Aidil Hutabarat, Muharriswan Ikhsan, Miftahul Ilham Ilham Ilman, Muhammad Khairi Imron Imron Irvan Dwi Putra Irvina Nurachmi Irwan Effendi Kurnia, Fadly Agra Lase, Wanda Fernanda Maizaldi, Maizaldi Manalu, Lili Yanti Manurung, Enjelina Maria Magdalena Marpaung, Bertaulina Mei Fita Asri Untari Merry Sintya Dewi Mery Mery Mhd Aidil Huda Mifdhol Hafli, Raja Diddin Mubarak &#039; Muhammad Alam Mulia Hasibuan Muhammad Isnan Alindra Muhammad Razali Muhammad Sabirin Muhammad Wahyu Hasibuan Musrifin Galib Musrifin Ghalib Nababan, Bastian Vepry Odynata NANDA PRATAMA Nasution, Muhammad Rasid Nora Sartika Pohan Nur Azizah Nursamsi Nursamsi Nursyirwani, Nursyirwani Panggabean, Iis Panggabean, Iis Apriati Paniska, Almaarif Putra &#039; Putra, Dhiga Kurnia Ananda Putra, Jefri Eliyas R. Diddin Mifdhol Hafli Rahayu, Rosi Rahim, Mustafa Rahmad Febriyandi Rahmita, R. Raja Siagian Ramadhan, A.R Ramadhan, A.R. Reny Cristina Naibaho Rifardi Rizki, A. Rumondang, Anne Ruth Natalia. S Sabirin, Muhammad Said Nazman Arif Salsabila, Ghina Sari, D.J. Saul Heryanto H.N Shofian Nanda Adiprayoga Sihaloho, Indra Y P Simamora, Enny Herawati Sinaga, Merisa Debora Sinaga, Nella Asima Br. Sitompul, Dodi Tri Putra Sitompul, Krivide Sitorus, Kornelius K Sofyan H. Siregar Sofyan Husein Siregar Sri Ratna Hidayati Sunarti &#039; Syafruddin Nasution Tatanagara, Muhammad Ilham Thamrin Thamrin Thamrin Thamrin Wahid Wahid Wahyudi Wahyudi Windarti Windarti Windarti Windarti Yanasari, Nurry Yanti, D.H. Yuke Constina Zientika, Zientika Zulkifli &#039; Zulkifli Zulkifli Zulkifli Zulkifli