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All Journal Maspari Journal Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk 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 (JRUCE)
Irvina Nurrachmi
Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Physics Social Sciences

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THE ANALYSIS OF NITRATE AND PHOSPHATE CONCENTRATION WITH DIATOM ABUNDANCE IN AIR HITAM STRAIT OF MERANTI ISLANDS REGENCY OF RIAU PROVINCE Marpaung, Andre Thessalonians; Nurrachmi, Irvina; Ikhwan, Yusni
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

The research was conducted in July 2014 in Air Hitam Strait of Meranti Islands Regency of Riau Province. This research aims to analyze the concentration of nitrate and phosphate and the relationship with diatom abundance. The samples were taken from 4 stations and each station was divided into 3 sampling points. The result showed the average value of nitrate and phosphate concentration were 0.122 mg/L and 0.021 mg/L. This research identified 12 genus of diatom. The highest abundance of diatom was found in Station 3 around of the floating cage locations (162.96 Ind/L) and the lowest was at Station 4 around harbor (111.11 Ind/L). The result of the simple linear regression of nitrate and phosphate concentration showed a positive relation with diatom abundance, that means if the concentration of nitrate and phosphate are raising the diatom abundance was also increasing.Keywords: Air Hitam Strait, Nitrate, Phosphate and Diatom
KERANG DARAH (Anadara granosa) ABUNDANCE IN COASTAL WATER OF TANJUNG BALAI ASAHAN NORTH SUMATERA ', Intan; Tanjung, Afrizal; Nurrachmi, Irvina
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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Abstract

The research was conducted in December 2012 in Tanjung Balai AsahanCity of North Sumatera Province. This research aim was to know the density of A.granosa. The research used survey method. Collection of A. granosa wasconducted once, that is when ebb period. The sampling was based on the quadrantof 1x1 m² lied on the transect line. Each quadrant was divided into 25 subquadrants with each of 20x20 cm².The results showed that the high abundance was recorded at the middleintertidal zone of station I with the average of 48.3 ind/m². There was nodifference in the cockle density between the upper and middle zones. The t testshowed with the result of 0.603 > 0.05 meaning that there was no diffrencebetween the two zones.Keyword : Anadara granosa, Abudance, Tanjung Balai Asahan, Intertidal
HUBUNGAN KANDUNGAN MINYAK DENGAN KELIMPAHAN DIATOM DI PERAIRAN MERAL KARIMUN PROVINSI KEPULAUAN RIAU Susammesin, Verid Aria; Nurrachmi, Irvina; Siregar, Yusni Ikhwan
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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The research was conducted in February-March 2015 with a goal to determine the relationship between the oil content and the abundance of diatomsin Meral Karimun waters of Riau Islands Province. The survey method was applied in four stations with three sampling strata,i.e. the surface area, the middle and near the bottom. It revealed that the oil content of water ranged from 0.1797 to 0.2063 ppm and diatom abundance were between 44 to 149 cells/l, which contain of 14 species. Apparently, the oil content of seawater was not correlated (p>0.05) with diatom abundance were the coefficient correlation of (r) = 0.318. The regression equation was y = - 468.350x + 184.297 with a coefficient of determination (R2) =0.101 and a correlation coefficient (r) = 0.318. It was suggested that increasing oil content will decrease the abundance of diatoms in the Meral Karimun waters.Key Words:Meral,abundance, diatoms, oil content
Organic Material Content In The Water Columnn And Sediment Of Coastal Water Of Sungai Bela District Indragiri Hilir Prawira, Michael; Nurrachmi, Irvina; Nedi, Syahril
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This research was conducted in June 2015 in the waters of the Sungai Bela village Indragiri Hilir in the relationship of organic matter in the water column and sediment in the waters of the Sungai Bela village. Water samples were taken in the surface of the Sungai Bela using a sample bottle, sediment samples taken using Eickman grab of 16 sampling points. The content of organic matter in the water the highest at station 3 (35.19%) and the  lowest for the Station 1 (19.44%). Organic matter the highest at station 3 is 28.20% and the lowest for the station 2 is 20.24%. Based on statistical test of the relationship of concentration of organic matter in water and sediment are strong relationships, or there is a positive relationship. The overall characteristics of the sediment fraction is dominated by silt fraction.   Key words :Organik, Sedimen, Air, Sungai Bela
BIOMASSA DAN KERAPATAN LAMUN BERDASARKAN RASIO N:P PADA SEDIMEN DI PERAIRAN PANTAI TRIKORA KABUPATEN BINTAN PROVINSI KEPULAUAN RIAU Febriyantoro, Dodik; Tanjung, Afrizal; Nurrachmi, Irvina
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

The research was conducted in January – March 2016 in coastal waters of MalangRapat, Bintan Regency, Kepulauan Riau Province. The aims of this study were to determinethe nutrient content of sediment in seagrass ecosystem and to determine the ratio of N:P inthe sediments by different of antropogenic and determine the relationship of nutrient withdensity and biomass of seagrass. The parameters measured were included physical andchemical parameters of marine waters. The density was computed using a quadratic transect,while seagrass biomass was calculated by measuring dry weight of shoot. The value ratio ofN:P in the sediment was total of nitrogen by Kjehdahl method and phosphorus total withDouble Acid method. The results showed the average nitrogen content was 0.003621–0.003966% and the average phosphorus was 0.000036–0.000090%. The density of seagrassin the coastal of Trikora Beach Malang Rapat was 54.78–56.33 shoots/m2 and biomass ofseagrass was 261.37–275.65 g/m2. Station II had a ratio of N:P = 44:1 and provided goodleverage, this can be indicated also by the total biomass and density of seagrass at this stationwas the highest. The Nitrogen and Phosphorus in the sediment with density and biomass ofseagrass had a very weak relationship, there are other factors that might affect the density andbiomass of seagrass in which were not measured in this study.Keywords: Seagrass Ecosystem, Density, Biomass, Rasio N:P, Sediment, Trikora Beach
NITRATE, PHOSPHATE AND SILICATE CONCENTRATION WITH THE ABUNDANCE OF DIATOMS ON SUIR ESTUARY MERANTI ISLAND Siregar, Meiyanto; Nurrachmi, Irvina; Yoswaty, Dessy
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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Abstract

The research was conducted in December 2016 in the Suir Estuary Meranti Island. The purpose of this study was to analyze the correlations between the concentration of nitrate, phosphate and silicate as well as an abundance of diatoms, to provide information about fertility waters seen from the content of nitrate, phosphate and silicate as well as an abundance of diatoms in the water. The research was used purposive sampling method with 3 region and each region to be 10 station point. The results showed that the concentration of Nitrate, Phosphate and Silicate i.e; 0,122 mg/L ; 0,021 mg/L ;0,059 mg/L. Diatom species were found 10 species i.e; Isthmia, Ceralaulina dentata, Rhizosolenia indica, Skeletonema costatum, Bidulphia pulchella, Rhizosolenia alata, Aulacoseria granulate, Nitzschia serianata, Lepctocylindrus anmeus and Ceratium furca. An abundance of diatoms at region 1 , region 2 and region 3 as much as 86.1111Ind/L; 111.1111Ind/L; 112.50000 Ind/L. The results of Regression test showed that nitrate concentrations correlations with diatom abundance of very strong correlation with the value of r (correlation coefficient) = 0,606. Relations with the abundance of diatoms phosphate concentrations are very weak correlations with the value of r (correlation coefficient) = 0.239. Relations with the silicate concentration of diatom abundance of weak correlationss with the value of r (correlation coefficient) = 0,556 .Key Words : Nitrate, Phospate, Silicate, Abundance Diatoms.
THE CORRELATION BETWEEN OIL CONTENT AND ABUNDANCE OF DIATOMS IN THE WATERS OF TANJUNG BALAI KARIMUN, KARIMUN REGENCY RIAU ISLANDS PROVINCE Yunus, Budi Andri; Nurrachmi, Irvina; Nedi, Syahril
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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Abstract

The research was conducted in April 2017. The purpose was to analyze the oil content, to determined type and abundance of diatoms, and to determine the correlation between oil content and abundance of diatoms in the waters of Tanjung Balai Karimun, Riau Islands Province. Survey method used consisted of four stations with three replications. The results, the average value of oil content ranged between 0.1820-0.5413 ppm, and the abundance of diatoms were between 54-132 ind/l. The ditoms which composed of 12 species namely Bacillaria sp., Coscinodiscus sp., Fragilaria sp., Isthemia sp., Guinardia sp., Lyngbya sp., Leptocylindrus sp., Nitzschia sp., Pleurosigma sp., Rhabdonema sp., Rhizosolenia sp., and Streptotheca sp. The correlation between oil content and the abundance of diatoms was negatively strong which meant the higher the oil content the decreased the abundance of diatoms in Tanjung Balai Karimun waters. The equation regretion was y = 135.0-149.7x, and the determination coefficients (R2) = 0.561 and the coefficient correlation (r) = 0.749.Keywords: Correlation, abundance, diatoms, oil content, Tanjung Balai Karimun.
ANALYSISOF METAL CONTENT OF Pb, Cu, AND CrIN LOKAN (Polymesoda expansa) FROM MAROK TUA AND KOTE COASTAL WATERS OF SINGKEP ISLAND LINGGA REGENCY RIAU ARCHIPELAGO PROVINCE Islamiati, Bening; Nurrachmi, Irvina; Nedi, Syahril
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 research was conducted on January - March 2018 in Marok Tua and Kote Coastal Waters, Pulau Singkep, Lingga Regency, Riau Archipelago Province. The purpose of this research is to know the metal content of Pb, Cu, and Cr on soft tissue in Lokan (P.expansa)based on 2 stations and 3 different sizes. In addition, to determine the status of heavy metal pollution and safe limits of consumption of lokan.The research used is dry method based on Yap et al., (2003).The results showed that the highest metal content of Pb was found at Station 2 with small size(6.9893 µg/g), the highest Cu metal content was found at Station 1 in large size(62.9547 µg/g) and the highest Cr content contained at Station 2 in large size (4,5800 µg/g).The MPI value of Marok Tua is 9.35 and in Kote is 8.69.Based on the calculation of PTWI, lokan still safe to consumed if it not exceed the safe limits of consumption for Pb, Cu, and Cr metal in Marok Tua (1.4842 kg/week; 18.5391 kg/week; and 1.9645 kg/week) and at Kote for Pb, Cu, and Cr metals (1.1960 kg/week; 37.0850 kg/week; and 1.5154 kg/week). Key Words : Marok Tua, Kote, Heavy Metal, Lokan (Polymesoda expansa)
THE CONTENT OF ORGANIC MATTER IN WATER AND SEDIMENTS IN COASTAL WATER MIRROR DISTRICTS SERDANG BEDAGAI NORTHERN SUMATERA PROVINCE Sihaloho, Elpon; Nedi, Syahril; Nurrachmi, Irvina
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                Organic matter is one indicator of environmental fertility either on land or at sea. Content Organic matter in the waters will experience an increase caused by discharges from households, agriculture, industry and organic waste from land to coast. The objective of this research is to know the input of organic material entering the waters of Cermin Beach and to know the content of organic material in water and sediment in the waters of Coast Mirror and the relation of organic matter content to water and sediment. The result of calculation of organic matter content in water ranged from 14,19 - 34,76 mg / l and the content of organic matter in sediment ranged from 0,33 - 8,90%. Furthermore, through simple linear regression test known that the relationship of organic matter content in water and sediment has a weak relationship with the correlation r = 0.137. The analysis of sedimentary fractions in the Coastal waters of Mirror is dominated by sandy substrates.  Key Words : Organic Matter, sediment, Water Of Mirror                         
Metagenomics-Based Cloning of Amilase-Encoding Genes from the Uncultured Symbiotic Bacteria of a Marine Sponge Theonella swinhoei from Kapoposang Island, South Sulawesi Priyono, Franciscus Edi; Zilda, Dewi Seswita; Kusnadi, Yudi; Hadi, Tri A; Nurrachmi, Irvina; Uria, Agustinus Robert
Squalen, Buletin Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 12, No 1 (2017): May 2017
Publisher : Research and Development Center for Marine and Fisheries Product Processing and Biotechnol

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/squalen.v12i1.272

Abstract

Marine sponges have recently been recognized as the source ofenzymes, including members of hydrolases. Hydrolytic enzymes are extracellularly produced by sponge-associated bacteria to mediate the metabolism of complex organic matters, thereby assisting the sponge hosts in nutrition and metabolic processes. Among hydrolytic enzymes, amilaseshas attracted increasing attention due to their potential industrial applications. This research work was aimed atutilizing functional metagenomicsapproach for the discovery of amilases derived from the uncultured symbiotic bacteriaof the Indonesian marine sponge Theonella swinhoei. Weinitially constructed a small-insert metagenomiclibrary in Escherichia coliby cloning of metagenome in the size range of5-20 kb prepared from the sponge’s microbiome. Further functional screening of the resulting metagenomic library led to the isolation of two recombinant E. coli clones potentially harboring amilase genes, as indicated by the presence of clearing zones surroinding the selective medium containing 1% amilum. 
Co-Authors ', Intan ', Jamalus Abdullah ' Adam Dionfriski Ade Mulyana Adi Maulana Afrizal Tanjung Afrizal Tanjung Afrizam ' Agustinus Robert Uria Aisyah Khasena Alfeus Jhonson Armada H Andre Thessalonians Marpaung Ani Ani Aras Mulyadi Aras Mulyadi Arbianti, Purnama Areza Maulana Arifin, Adani Fatahilal Betari Erlinda Prayitno Bintal Amin Biotal Amin, Biotal Dessy Yoswaty Dewi A. Mahmudah Dewi Seswita Zilda Dewita Dewita Dewita Dewita Dharma Eka Putra Dilla Andini Dilla Andini Dinda Savita Dodik Febriyantoro, Dodik Dwi Hindarti, Dwi Dwi Putri Pratiwi Efriyeldi, Efriyeldi Elizal, Elizal Ernanda P. Darmawan Esra Waty F, Feliatra Fadel Fadel Febeyessy Aritonang Feffiana M Amin Fitriansah, Heru Gregorius Agung Gustini Sri Ulina Hardiko, Syefri Hazmi Arief I Ketut Sudiana Ilham Yurestira Islamiati, Bening Jefri Affandi Jewlaika, Lady Joenathan Sarumpaet Joko Samiaji Jonter Sitepu Kaharudin, Zakaria Khairunnisa Khairunnisa Kusnadi, Yudi Lita Sari M. Afriansyah Margaretha Sri Ulina Sitohang Masjudi, Heri Melania Syahada Merry Sintya Dewi Michael Prawira, Michael Mikael H Dolok Saribu Mubarak ' Mudinillah, Adam Muhammad Amien Muhammad Irfan Muhammad Nudi Habibi Muhammad Nudi Habibi Muhammad Roif Alghani Muhammad Syarif Musrifin Galib Musrifin Galib Musrifin Galib Musrifin Ghalib Musrifin Ghalib Nababan, Sumiati Friesledi Nickson Panjaitan Nila Sari Lubis Nisa Tria Fatma Nur Arifin, Nur Nursyirwani, Nursyirwani Nurul Abdiah Nasution Priyono, Franciscus Edi Putra ' Putri, Zulherija Rafiq Prima Nugraha Ragiel Ramadhan Rahma I. Utami Raihan Zaki Rajiv R. Putra Ridhawani, Fiki Ridwan Rafsyanjani Rifardi ' Rifqi Rafif Anadri Riska Khaironisa Riska Khaironisa Rizki Hamdani Rosa, Mila Rozali ' Sari R. Al Haura Seli Selvia Sembiring, Herbin Sihaloho, Elpon Simon Hasintongan Aritonang Siregar, Meiyanto Siti Nur Sufaidah Siti Nursubadriah Sofia Wanda Rizki Sofyan H. Siregar Sofyan Husein Siregar Sumiati Friesledi Nababan Susiyanti. N Suzila ' Syafrizal Syafruddin Nasution Syahril Nedi Syahrul Syahrul Syawfy Luthfiandra Syukri Fajar Taufik Adrizal Tengku Rahma Lopi Thamrin ' Thamrin Thamrin Thamrin Thamrin Theresia Tampubolon Tri A Hadi Verid Aria Susammesin, Verid Aria Waidia Dipeta Ym Windarti Nofriyan Nengsih Wiranda Dellarosa Yasir Muammar Lubis Yofita Sandra, S.Pd., M.Pd., Zico Farlin, Dr. Budiwirman, M.Pd., Yunus, Budi Andri Yusni Ikhwan Yusni Ikhwan Siregar Zakaria Kaharudin Zulkifli ' Zulkifli Zulkifli Zurya Hanifa