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All Journal Maspari Journal Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Jurnal Ilmu Lingkungan Jurnal Ilmu Perairan (Aquatic Science) Maspari Journal Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Indonesian Journal Of Environmental Science and Technology Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology Asian Journal of Aquatic Sciences Unri Conference Series: Community Engagement Jurnal Zona Journal of Coastal and Ocean Sciences Journal of Rural and Urban Community Empowerment Jurnal Perikanan dan Kelautan Tropical Marine Environmental Sciences Jurnal Natur Indonesia
Irvina Nurachmi
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Social Sciences

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EFFECT OF FEEDING MADE WITH DIFFERENT PROTEIN COMPOSITION ON GROWTH AND SURVIVAL RATE OF THE HUMPBACK GROUPER SEEDS (Cromileptes altivelis) Ade Mulyana; Syafruddin Nasution; Irvina Nurrachmi
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             The Humpback Grouper is one of the commercial marine fish that has been cultivated both for purpose of hatchery and enlargement, so that quality feed is needed for better growth. Thid research was carried on June 15- July 27, 2019 at UPTD BPBALP  Teluk Buo Kec.  Bungus, Padang City, West Sumatera Province.Providing feeding made with protein sources derived from fish head flour aims to increase the growth of the humpback grouper fish with cheaper raw materials. The method used in this research is experimental method using Completely Randomized Design (CRD) with three treatments and three replications so that it required 9 experimental units with 3 different fish head flour compositions, that is A = 26,58%, B = 31,61%, C = 36,64%. The main parameters measured include absolute length, absolute weight, specific growth rate, and survival rate of fish. While water quality parameters include temperature, pH, salinity, and dissolved oxygen. Measurement data were analyzed using Analisys of Variance (ANOVA) with α <0.05. Then proceed with the Newman Keulstest to find out where is the significance of the data and treatments that obtain optimal growth. The provision of artificial feed with different protein compositions significantly affected the growth and survival of the humpback grouper fish. Increased optimal growth was obtained in treatment C with 36,64% protein composition. Keywords: The Humpback Grouper, Fish Head Flour, Growth, Survival Rate
RELATIONSHIP OF EPIPHELIC DIATOMS ABUNDANCE WITH NITRATE, PHOSPHATE AND SILICATE CONCENTRATIONS IN INTERTIDAL ZONE OF WATERS KUALA TANJUNG SEI SUKA SUBDISTRICTS BATU BARA REGENCY OF NORTH SUMATERA PROVINCE Nurhasanah Nurhasanah; Sofyan Husein Siregar; Irvina Nurrachmi
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                                                                 Diatom are microscopic plants as primary producers for most marine biota. This research has been held on March 2018 in Intertidal Zone of waters Kuala Tanjung Sei Suka Subdistrict, Batu Bara Regency, North Sumatera Province. The purpose of this study was to determine the genera epiphelic diatom abundance of Nitrate, Phosphate and Silicate concentrations and to know relationship of epiphelic diatom abundance with concentrations of Nitrate, Phosphate and Silicate. Sediment samples was taken from 4 stations and each stations was divided based on the intertidal zone (lower, middle and upper). Sample identification was obtained from 4 genera of diatom centrales and 9 genera of diatom pennales. Epiphelic diatom abundance was found in each zone ranged from 343 - 5319 ind/cm2 and at each station ranged from 686 - 6634 ind/cm2. Nitrate concentrations ranged from 0.0125 - 0.0958 mg/l, Phosphate concentrations ranged from 0.1150 - 0.8385 mg/l, and the concentration of Silicates ranged from 0.1529 - 0.3301 mg/l. Simple linear regression analysis indicates a very low negative correlation between Nitrate with abundance the epiphelic diatom, a negative correlation between Phosphate with epiphelic diatom abundance and negative correlation between Silicate with epiphelic diatom.Keyword: Intertidal Zone, Epiphelic Diatoms, Nitrate, Phosphate and Silicate       
THE ABUNDANCE OF POISONOUS BENTHIC DINOFLAGELLATE IN SEAWEED Sargassum sp IN MALANG RAPAT WATERS BINTAN REGENCY RIAU ISLANDS PROVINCE Dilla Andini; Irvina Nurrachmi; Yusni Ikhwan Siregar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT Dinoflagellates are phytoplankton which, besides being planktonic, are also benthic which live in association with seagrasses, macroalgae, coral fractures and sand. Dinoflagellates acts as a primary producer in waters. This research was carried out in Mei 2018 in the waters of Malang Rapat Village, Bintan Regency, Riau Islands Province. This study aims to determine the concentration of nitrates and phosphates in the waters, to find out the abundance of toxic benthic dinoflagellates on Sargassum sp seaweed and to see the relationship of nitrate and phosphate concentrations with the abundance of toxic benthic dinoflagellates. The research method used is a survey method in which the sampling location is determined by purposive sampling. Measurements of water quality were carried out directly in place and further research in laboratory which consisting of physical and chemical parameters of the waters. In the study found 3 genus of toxic dinoflagelates, namely Prorocentrum, Gambierdiscus and Ostreopsis. The highest dinoflagellate abundance at station 3 was 302,279 cells/g and the lowest at station 4 was 133,529 cells/g. The results of simple linear regression analysis between nitrate concentration has a positive relationship to dinoflagellate abundance with the regression equation y = 187.4 + 317.8 x and the results of simple linear regression analysis between phosphate concentration have a negative relationship to the abundance of dinoflagellates with the regression equation y = 207 , 5 -206,3 x. Key Word : Dinoflagellate, Sargassum sp, Abundance, Malang Rapat 
STUDY BETWEEN OIL CONTENT SEAWATER AND DIATOMS ABUNDANCE IN AIR HITAM STRAIT MERANTI ISLANDS REGENCY RIAU PROVINCE Syukri Fajar; Irvina Nurrachmi; Syahril Nedi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The research was conducted on February until March 2017 with a goal todetermine the relationship between the oil content and the abundance of diatoms,in Air Hitam Strait Meranti Islands Regency Riau Province. The survey methodwere conducted in four stations, in which three sampling. It revealed t hat the oilcontent of water ranged (0.2687 to 0.7889 ppm) and diatom abundance between(116 to 287 cells/l) which contain of 7 species. Of research results, the oilcontent in the sea water with an abundance of diatoms have a strong relation withthe value of the correlation coefficient r = 0.727, regression equation appeared y= 337.04 – 233.71 x with a coefficient of determination (R2) = 0, 5291 and thevalue of the Sig < 0.05. It was suggested that increasing oil content will decreasethe abundance of diatoms in the Air Hitam Strait.Key Words: abundance, diatoms, oil content
STUDY ABUNDANCE PLANKTONIC DIATOM (Bacillariophyta) WITH NITRATE AND PHOSPHATE CONCENTRATION IN BELAWAN WATERS PROVINCE NORTH SUMATERA Mikael H Dolok Saribu; Aras Mulyadi; Irvina Nurrachmi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Research about abundance of planktonic diatoms with concentration ofnitrate and phosphate in Belawan waters of North Sumatra Province wasconducted in February 2013. The purpose of this study was to know the type ofplanktonic diatom, nitrate and phosphate concentration, diatom communitystructure, determine the relationship between nitrate and phosphate concentrationwith Abundance of diatoms. Samples taken from 4 stations. The sampleidentification was obtained by 16 diatom species. The abundance of diatoms is inthe range of 4,018-4,802 ind/liter. The nitrate concentration of each station is inthe range of 0.261-0.507 mg/l. The concentration of phosphate in the range of0.064-0.126 mg/l. The diversity index is moderate, no dominant type and theuniformity index belongs to the still-balanced waters. The relationship of nitrateand phosphate concentration to diatom abundance is classified as moderate topositive value, the higher the concentration of nitrate and phosphate, the higherthe diatom abundance.Keyword: Belawan Waters, Diatom, Abudance, Nitrate & Phosphate
ANALYSIS OF METAL CONTENT OF Pb, Cu AND Zn IN WATER AND SEDIMEN FROM COASTAL KUNDUR ISLAND KARIMUN REGENCY OF ,RIAU ARCHIPELAGO PROVINCE Sumiati Friesledi Nababan; Irvina Nurrachmi; Syahril Nedi
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                The reseach was conducted on water and sediment in Kundur Island water to find out metal of Pb,Cu and Zn. The research used purposive method with determination of research areas. The sample was taken on March 2018 and analysis on April 2018 inMarine Chemical Laboratory, Faculty of Fisheries and Marine, University of Riau. The results showed that the metal of Pb in water ranged from 0,2996 – 0,4685 mg/l. The content of Cu 0,2997 – 0,8424 mg/l and Zn 0,5428 – 0,9355 mg/l. The metal of Pb in the sediment ranged from 15.5383 - 22.8933 μg/g. Cu 3,5117 - 7,4750 μg/g and Zn 47,4067 – 77,0167 μg/g. Keywords: Metal content of Pb, Cu, and Zn, Water and Sediment, Kundur Island
ANALYSIS OF METAL CONTENT OF Pb, Cu, and Zn IN SEDUT SNAIL (Cerithidea cingulata) FROM COASTAL WATERS OF MAROK TUA VILLAGE AND KUALA RAYA VILLAGE, SINGKEP ISLAND, LINGGA REGENCY OF RIAU ARCHIPELAGO PROVINCE Tengku Rahma Lopi; Irvina Nurrachmi; Syahril Nedi
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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ABSTRACTThe objective of the research is to find out metal content of Pb, Cu, and Zn in Sedut Snail (Cerithidea cingulata) from coastal waters of Marok Tua Village and Kuala Raya Village and determined safe limit of consumption Sedut Snail (Cerithidea cingulata) from coastal waters of Marok Tua Village and Kuala Raya Village. This research has been conducted in coastal waters of Marok Tua Village and Kuala Raya Village, Singkep Island, Lingga Regency of Riau Archipelago Province. The methods used is purposive sampling to determine the definite limits of Marok Tua Village and Kuala Raya Village. Sampling has been conducted on January, 2018 and sample destruction, analysis of metal content conducted in Marine Chemistry Laboratory, Department of Marine Science, Faculty of Fishery and Marine, University of Riau. The result shows that the metal content of Pb was from3,3493 - 4,8570 μg/gat Marok Tua Village and 6,1227 - 6,9880 μg/gat Kuala Raya Village. The metal content of Cu was from51,1067 – 68,1987 μg/g at Marok Tua Village and 92,9733 – 122,3533 μg/gat Kuala Raya Village. The metal content of Zn was from 53,7133 – 61,8427 μg/g  at Marok Tua Village and34,4013 – 41,8013 μg/g at Kuala Raya Village. Safe limit of consumption of metal content of Pb, Cu and Zn  in coastal waters of Marok Tua Village was 1,6381; 17,091; 33,346 kg/minggu and in coastal waters of Kuala Raya Village was 1,0726; 9,3030; 52,6707 kg/minggu. Keywords: Metal content of Pb, Cu, and Zn, Sedut Snail (Cerithidea cingulata),Marok Tua Village, Kuala Raya Village
ABUNDANCE OF EPIPHYTIC DIATOM IN RhizophoraCOVERED AND NOT COVERED BY PLASTIC IN PECINTA ALAM BAHARI DUMAI Lukman Harun; Sofyan Husein Siregar; Irvina Nurrachmi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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 AbstractDiatoms are unicellular organisms from the Bacillariophiceae class, can be found as planktonic diatoms and benthic diatoms. This research was carried out in July 2018, in Pecinta Alam Bahari (PAB), Dumai Barat. This study aims to find out the type, distribution, and abundance of epiphytic diatoms in Rhizophora.The method use in this study was the survey method.Point sampling was determined by purposive sampling, each point sampling consists of 3 sub-sampling (trees). there are 9 types of epiphytic diatoms in mangrove Rhizophora sp. on roots covered and were not covered by plastic, it wasCoscinodiscus sp., Cyclotella sp., Isthmia sp., Melosira sp., Leptocylindrus sp., Stepanopixis sp., Gyrosigma sp., Navicula sp., and Synedra sp. The lowest total abundance of diatoms in the roots covered by plastic and those not covered by plastic is at the sampling point I, which is 689.28 ind/cm2and 1,132.40 ind/cm2. The highest diatom abundance in roots covered and not covered by plastic were at the sampling point III, which is 1,230.87 ind/cm2 and 1,477.04 ind/cm2. Based on the results of t-test obtained a significant value of< 0.05 i. e. 0,032 indicating the abundance of ephipythic diatoms was significantly different in the roots covered and not covered by plastic.Keywords : Diatom, Abundance, covered and not covered by plastic
ANALYSIS OF OIL CONTENT SEAWATER AND DIATOMS ABUNDANCE IN COAST SAKERA WATERS OF BINTAN REGENCY OF RIAU ISLANDS PROVINCE Abdullah &#039;; Irvina Nurrachmi; Syahril Nedi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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Coast Sakera of Bintan regency of Riau Islands province has become location implementation research On July 2016, with a goal determine the oil content and the abundance of diatoms in each station and the relationship between oil content with the abundance of diatoms. The survey method was applied in four stations, each station consists of three sampling points. Based on the result, the hinghest average value of oil content was obtained at station 3 (0,3587 ppm) and the lowest was at station 4 (0,1238 ppm). Diatoms were found in the surface waters of coast Sakera were 12 species. Where the species most dominating is Isthmia sp 2 Nitzschia sp 1 and Nitzschia sp 2. Based on the result, the hinghest average value of diatoms was obtained at station 4 (104 ind/l) and the lowest was at station 3 (51 ind/l). The relationship between oil content with diatom abundances has weak negative correlation, wich mean increasingly high of oil content will decline the abundance of diatoms of coast Sakera.Keywords : Coast Sakera, abundance, oil, and diatoms
The Abundance and the Distribution Pattern of Sucker Snail (Cerithidea quadrata) in Mangrove Forest of Untut Island of Teluk Meranti District of Pelalawan Regency of Riau Province Suzila &#039;; Efriyeldi &#039;; Irvina Nurrachmi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The research was conducted in October 2015. The samples were taken in mangrove forest of Untut Island of Teluk Meranti District of Pelalawan Regency of Riau Province. The sample was analyzed in the Laboratory of Marine Chemistry and Laboratory of Marine Biology of Faculty of Fisheries and Marine Sciences, University of Riau. The result showed the average of sucker snail (C. quadrata) in each station ranged from 1-6.22 ind/m2. The abundance of C. quadrata among station I, station II and III was not different significanty (p<0.01) while in station II and III was different significanty (p>0.05). The most dominant individual size of C. quadrata was found in station 3 (2-3.99 cm) which comprising of 64 individuals. The distribution pattern of C. quadrata in each station in the research area was in the from of groups.Keywords: Abudance, distribution of gastropods, mangrove forest, Untut Island.
Co-Authors ', Intan ', Jamalus AA Sudharmawan, AA Abdullah &#039; Adam Dionfriski Adani Fatahilal Arifin Ade Mulyana Aden, Aden Adi Maulana Adrizal, Taufik Afriansyah, M. Afrizal Tanjung Afrizam &#039; Afrizani, Syafrinaldi Agustinus Robert Uria Albukhori, Mustaqim Alfeus Jhonson Armada H Alghani, Muhammad Roif Alqoriffah Hasanah Anadri, Rifqi Rafif Andini, Dilla Andre Thessalonians Marpaung ani ani Aras Mulyadi Arbianti, Purnama Areza Maulana Arifin, Adani Fatahilal Aritonang, Simon Hasintongan Aryanti, Nisa Aslam, Atthoriq Habib Harry Bestari, Bismi Yanda Putri Bintal Amin Bintang Rapshodio Tane Biotal Amin, Biotal Dameria, Gabriella Darmawan, Ernanda P. Dellarosa, Wiranda Dessy Yoswaty Dewi Seswita Zilda Dewita Dewita Dewita Dewita Dharma Eka Putra Dilla Andini Dionfriski, Adam Dodik Febriyantoro, Dodik Dwi Hindarti, Dwi Dwi Putri Pratiwi Dyonisius Hutauruk Efriyeldi, Efriyeldi Eka Puspa Sari Elizal, Elizal Esra Waty Fadel Fadel Fadillah, Yuda Fathurrahman, Febri Fatma, Nisa Tria Fatmanita Fatmanita Fatmanita, Fatmanita Febbyolla, Selfi Anidal Febeyessy Aritonang Febri Naldi Feffiana M Amin Feliatra Feliatra, Feli Ferdi, Aidil Fitriani, Ersa Fitriansah, Heru Ghifari, Muhammad Fadil Gregorius Agung Gustini Sri Ulina Hanifa, Zurya Hardiko, Syefri Haura, Sari R. Al Hazmi, Arief Ilham Ilahi Indri Wahyuni Irwan Effendi Irwan Irwan Islamiati, Bening Izzati, Salsabila Jefri Affandi Jewlaika, Lady Joenathan Sarumpaet Joko Samiaji Jonter Sitepu Kaharudin, Zakaria Khaironisa, Riska Khairunnisa Khairunnisa Khasena, Aisyah Kusnadi, Yudi M, Ridwan Rafsyanjani. Maharani, Tasya Putri Mahmudah, Dewi A. Manik, Mei Suyanti Masjudi, Heri Merry Sintya Dewi Michael Prawira, Michael Mikael H Dolok Saribu Mila Rosa Mubarak &#039; Mubarak Mubarak Mudinillah, Adam Muhammad Aliv Kusuma Putra Muhammad Amien Muhammad Hafizh Muhammad Irfan Muhammad Nudi Habibi Muhammad Nudi Habibi Muhammad Syarif Musrifin Galib Musrifin Ghalib Nababan, Sumiati Friesledi Naldi, Febri Nickson Panjaitan Nila Sari Lubis Nugraha, Rafiq Nugraha, Rafiq Prima Nur Arifin, Nur Nurfalah, Risna Nursyirwani, Nursyirwani Nurul Abdiah Nasution Nurvana, Resti Panggabean, Salmi Engriani Permatasari, Mutiara Indah Pratama, Farrel Prayitno, Betari Erlinda Priyono, Franciscus Edi Putra &#039; Putra, Rajiv R. Putri Andini, Putri Putri Maharani Putri, Dinda Maharani Putri, Nadila Putri, Rukiana Audi Putri, Zulherija Rafsyanjani M, Ridwan Rahman, Nanda Rahmat Hidayat Ramadhan, Ragiel Ramadhoni, Aulia Zahro Rambe, Sakinah Rachmadani Ridhawani, Fiki Rifardi Riska Khaironisa Rizki Hamdani Rizki, Sofia Wanda Rosa, Mila Rozali &#039; Rozalina, Rozalina Rozalina S.Pd. M Kes I Ketut Sudiana . Sari, Lita Sari, Natalia Widya Savita, Dinda Selfi Anidal Febbyolla Selvia, Seli Sembiring, Herbin Shandy, Jacinda Qoidatun Shelviyanti, Nabila Sianturi, Yuli Rona Tamaria Sihaloho, Elpon Sinaga, Cindy Novitasari Sinaga, Merisa Debora Sinaga, Rimansius Siregar, Meiyanto Siregar, Sofyan Siti Nursubadriah Sitindaon, Dionisius Rahmat Martin Sitindoan, Benni Mario K. Sitohang, Margaretha Sitohang, Margaretha Sri Ulina Sofyan H. Siregar Sofyan Husein Siregar Sri Dewi Lestari, Sri Dewi Sufaidah, Siti Nur Sumanti, Susi Sumiati Friesledi Nababan Susiyanti. N Suzila &#039; Syafrizal Syafrizal Syafruddin Nasution Syahada, Melania Syahputra, Vico Andrian Syahril Nedi Syahrul Syahrul Syawfy Luthfiandra Syukri Fajar Tampubolon, Theresia Tane, Bintang Rapshodio Tantri, Ristamulia Tengku Rahma Lopi Thamrin &#039; Thamrin Thamrin Thamrin Thamrin Tri A Hadi Utami, Rahma I. Verid Aria Susammesin, Verid Aria Waidia Dipeta Ym Windarti Nofriyan Nengsih Wiranda Dellarosa Yasir Muammar Lubis Yunus, Budi Andri Yurestira, Ilham Yusni Ikhwan Yusni Ikhwan Siregar Zakaria Kaharudin Zaki, Raihan Zulkifli &#039; Zulkifli Zulkifli