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THE RELATIONSHIP OF NITRATE AND PHOSPHATE CONTENT WITH ABUNDANCE OF EPIPHYTE DINOFLAGELLATE ON SEAGRASS Enhalus acoroides IN THE WATERS OF PONCAN GADANG ISLAND WATERS Lumbantoruan, Erfana Romauli; Zulkifli, Zulkifli; Siregar, Yusni Ikhwan
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACTDinoflagellate isa large of microalgae groups. Its abundance was dependent on nitrate and phosphate content. The research was conducted in September 2018 that located at waters of Poncan Gadang Island, Central Tapanuli Regency. The aims of this research was to analyze nitrate and phosphate content, identification of species of epiphyte dinoflagellates, and the relationship between nitrate and phosphate content with abundance of epiphyte dinoflagellate on seagrass Enhalus acoroides were analyzed. Apparently the highest of nitrate content found at station I and II on 0.0402 mg/l, the lowest found at station III on 0,0367 mg/l. the highest of phosphate content found at station III on 0,0995 mg/l, the lowest found at station I on 00678 mg/l. It revealed that 3 species of epiphyte dinoflagellate foundwhich are Amphidinium sp., Gambierdiscus sp. and Prorocentrum sp. The highest of abundance epiphyte dinoflagellate found at station II on 1245,90 sel/g and the lowest found at station III on 767,13 sel/g. The relationship between the nitrate content with abundance of epiphyte dinoflagellate has a positive relationship with the regression equation y = 294.55 + 1121.5x, while the relationship between the phosphate content with abundance of epiphyte dinoflagellate has a negative relationship with the regression equation y = 488.54 + (-1801.7x).Keywords : Epiphyte Dinoflagelates, Nitrate , Phosphate, Poncan Gadang Island.
Faktor konsentrasi Pb, Cd, Cu, Ni, Zn dalam sedimen perairan pesisir Kota Dumai Siregar, Yusni Ikhwan; Edward, Jhon
Maspari Journal : Marine Science Research Vol 1, No 1 (2010): Edisi Juli
Publisher : UNIVERSITAS SRIWIJAYA

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Abstract

Anthropological pollution threat to coastal and marine ecosystems Dumai City is intensifying with the acceleration of industrial development in various sectors. Aquatic ecosystem as a final address pollution supply of land will bear the burden of heavy metal contamination. Has been studied heavy metal concentrations in water, sediment and fish. The research aims to identify the heavy metal pollutants travel on ecosystem components and evaluate the security status of fish as a public consumption. Results showed that bottom sediment has accumulated Pb, Cd, Cu, Ni and Zn as indicated by Factor Concentration (doubling), consecutive 25-27, 13-18, 9-38, 74-93 and 34-162 times the heavy metal body of water. In fish flesh Gulama (Pseudociena amoyensis) undetected Pb, Cd, Cu and Zn, consecutive from 4.07 to 5.52; 0.09 to 0.19; 0.13 to 0.29 and from 5.64 to 7.56 tg / g. This value is still below the safe limit consumption of fish when referring to the standard DG POM.   Keyword: Concetration Factor, heavy metal, sediment   Ancaman pencemaran antropologis terhadap ekosistem pesisir dan laut Kota Dumai semakin meningkat sejalan dengan percepatan pembangunan industri berbagai sektor. Ekosistem perairan sebagai alamat akhir pencemaran daratan akan menanggung beban pasokan cemaran logam berat. Telah dilakukan penelitian konsentrasi logam berat pada badan air, sedimen dan ikan. Penelitian bertujuan menemukenali perjalanan pencemar logam berat pada komponen ekosistem dan mengevaluasi status keamanan ikan sebagai konsumsi masyarakat. Hasil penelitian menunjukkan bahwa sedimen dasar telah mengakumulasi Pb, Cd, Cu, Ni dan Zn yang ditunjukkan dengan Faktor Konsentrasi (pelipatgandaan), berturut turut 25-27, 13-18, 9-38, 74-93 dan 34-162 kali lipat dari logam berat badan air. Pada daging ikan Gulama (Pseudociena amoyensis) terdeteksi Pb, Cd, Cu dan Zn, berturut turut 4,07-5,52; 0,09-0,19; 0,13-0,29 dan 5,64-7,56 µg/g. Nilai ini masih dibawah batas aman konsumsi ikan bila merujuk standar Dirjen POM.   Kata kunci: Factor Konsentrasi, logam berat,  Ikan, sedimen
Potential Assessment and Development Strategy of Ecotourism In Bokor Village of Meranti Archipelago Regency of Riau Province Mulyadi, Aras; Siregar, Yusni Ikhwan; ', Arfitrah
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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This study was aimed to: 1) assess the potential and condition of mangrove ecosystems in Bokor Village to be developed into ecotourism destination, 2) knowing the level of community participations and perceptions, 3) knowing the effort and perceptions of stakeholders concerning to development ecotourism in Bokor Village, and 4) developing a strategy for ecotourism in Bokor Village. The methods used in this study were observation, survey and interviews.The results showed that the mangrove forest in the Bokor Village had good density with very dense with a density of 2955.55 Ind/ha and there were 13 species of mangrove flora. The average value of the category of community participation showed 0.41, thus community participation in the development of ecotourism in the Bokor Village was relatively low. The average value of the category community perceptions was 3.32, it means the level of community perceptions of ecotourism development was classified as supporting category. Furthermore, the results showed that the stakeholders related provide a very strong support for the development of ecotourism in the Bokor Village.Based on the result of SWOT analysis, the development strategy in the Bokor Village was by applying an aggressive strategy (Growth Oriented Strategy) or also known as S-O Strategy (Strength-Opportunities). This consisted of making the general management plan and conservation site plan for the development of ecotourism, building and adding the quality of products/services ecotourism (High Quality), improving access to a wider market and establishing cooperation with universities or research institutions in the field of research and conservation.Keywords: Bokor Village, Ecotourism, Participations, Perceptions
Comparative Study On Characteristics Of Solid Waste Black Water In Strait Meranti Islands Natali, Alvin; Siregar, Yusni Ikhwan; Siregar, Sofyan Husein
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 amount of solid waste at station 1 to station more than 2 type of solid waste in the Black Water Strait of each station is almost the same, where the Black Water Strait is dominated by the type of waste plastic and small pieces of wood. In Black Water Strait encountered type of waste that generally consist of plastics, paper, rubber, foam, jute sacks, leaves, and small pieces of wood. From this we can conclude that the solid waste at both stations originate from the same source ie domestic waste. The strong tidal currents provide a direct influence on the amount of solid waste that are found in every point of the study and vice versa if the lower the pressure, the current is the entry-level waste into gear tends to be decreased.Keywords : Comparative Study, Solid Waste, Selat Air Hitam, Meranti Island
KANDUNGAN LOGAM BERATKADMIUM (Cd) DAN TIMBAL (Pb) PADA SEDIMEN, AIR DAN IKAN TEMBAKUL (Periophthalmus sp) DI PERAIRAN DUMAI Siregar, Yusni Ikhwan
Jurnal Kajian Lingkungan Vol 1, No 2 (2013)
Publisher : Jurnal Kajian Lingkungan

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This research was held on June to August 2012 and aims to analyze the content of heavy metals Cd and Pb in sediment, sea water and tembakul (Periophthalmus sp) in Dumai waters and to determine the correlation between the three. The method used was a survey method with 4 stations sampling were set by purposive with the inclusionof the sourceof pollutants. There was a difference between the content of Cd and Pb in sea water, sediment and tembakul (Periophthalmus sp), in which the heavy metal contentin the sea wateris lower than in sediment and fish. The highest content of Cd in sea water is in Stations1, 2 and 3, which .077mg/L. In the sediment, the highest contentis in Station 3, which is1.819μg/g and the lowest at Station 4, which is 0.690μg/g. Another case in Tembakul, the highest content of Cd is in Station 1, which is 0.447μg/g. Pb content of sea water is highest at Station 2, which is 0.787mg/L and the lowest is on station 4, is equal to 0.370mg/L. The highest content of Pb in the sediment is at station 2, which is 33.221μg/g and remained the lowest at Station 4 with Pb contents value of 19.018μg/g. At tembakul (Periophthalmus sp), the highest Pb content is in Station 2, which is 4.976μg/g and the lowest at Station 4, which is 2,555μg/g. The content of Cd and Pb tembakul in Dumai waters under the in fluence of Cd and Pb content of water and sediment 54,2% increase in the content of Cd in sediments under the in fluence of the water content of Cd.62.5% Cd metal content in fish is in fluenced by the water content of Cd and 42.6% are in fluenced by the Cd conten to f the sediment. For Pb in sediments 60.4% in fluenced by the Pb content of the water. 68.1% Pb metal content in tembakul in fluenced by the water content of Pb and 65.9% under the influence of the Pb content of sediment. It means, if the content of heavy metals in water and sediment increases, it will give a negative impact to tembakul.Keyword: Heavy Metal, Dumai, Water, Sedimen, Tembakul
ABUNDANCE OF FISH INDICATORS OF CORAL REEF FAMILY CHAETODONTIDAE IN THE WATERS OF LAGOI BINTAN REGENCY OF RIAU ISLANDS PROVINCE BY : Marpauang, EkoRinaldi; Siregar, Yusni Ikhwan; Siregar, Sofyan Husein
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACTA Study on the abundance of Chaetodontidae, coral cover and  relationship of  abudance with coral cover were conducted from May -          July 2019 in the Lagoi Waters of Bintan Regency of  Riau Islands Province. Abudance of fish observed with Underwater Visual Census (UVC) method while coral cover with Reef Check  method. Apparently the abundance of Chaetodontidae fish ranged from 313.3 - 603.3 ind/ha whereas coral cover ranging from 46 - 74%.Forthat, abudance of coral fish corelated (r = 0.977) with coral cover, suggest that, there is a very strong relationship between live coral cover and Chaetodontidae fish. Key words :Chaetodontidae, Coral Reef, Lagoi Waters
PENAMBANGAN BATUAN DI KECAMATAN PANGKALAN KERINCI KABUPATEN PELALAWAN Siregar, Yusni Ikhwan
Jurnal Kajian Lingkungan Vol 2, No 1 (2014)
Publisher : Jurnal Kajian Lingkungan

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This research aims to analyze 1) condition of rocks mining operations existing, 2) stakeholders understanding of good mining practice and 3) physical environment impact of rocks mining operations in sub district of Pangkalan Kerinci Regency of Pelalawan. The methods used to collect the data is a survey method with qualitative descriptive approach. The Mining operations existing condition of the eight mines do not have permit except locations III that only have mining permit (IUP). Mining system still uses an open system and not fully implement the K3 system, environmental protection and post-mining land cover. Stakeholders understanding about good mining practice include: aspects of licensing (72% = understand), technical mining (65% = understand), environmental protection (73% = understand), relationship of the upstream-downstream / conservation / value-added of community development / the area around the operation sites (66% = understand), frame rules regulations and applicable standards appropriate stages of mining operations (79% = very understand ). Health safety (44% = less understand), prepare a post-mining land ( 45% = less understand). Physical environmental impacts arising from mining, include: the loss of natural beauty, the loss of some habitat for flora and fauna, the increase in water runoff (surface run-off), noise (noise) and vibration (ground vibration) due to the operation of heavy equipment, air pollution, oil and used oil spills, soil subsidence and the presence of dry holes without plants.Keywords : Mining, Environmental Degradation, Pelalawan
ANALISIS BEBAN PENCEMAR UDARA AMBIEN DARI KEGIATAN TRANSPORTASI DI RUAS JALAN SOEBRANTAS KOTA PEKANBARU Siregar, Yusni Ikhwan
Jurnal Kajian Lingkungan Vol 2, No 2 (2014)
Publisher : Jurnal Kajian Lingkungan

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Network for special road, especially in urban imbalance occurs between the growth rate of the road on one side with a growth rate of vehicles on the other, where the growth path is much smaller than the growth rate of the vehicle, this means showing the occurrence of an excessive load on the road. These conditions resulted in traffic congestion, disrupted travel convenience, travel fatigue, boredom trips, increased air pollution, wastage of time and material it also occurs on roads Soebrantas.The observation of the volume of vehicles on Sunday has the highest volume of 87.059 units 86.384 units followed Saturday and Sunday 73.125 units. The observation of Sunday vehicle top speed is 56,90 km/h followed Friday 54,57 km/h and Saturdays 50,26 km/h. Contributions load of pollutants CO are the largest contributor of pollutant loads. The total load of pollutants on Friday 5.265.420,06 grams/day consisting of CO: 92,43%, NOx: 6,32%, PM10: 1,0% and SO2: 0,25%. Total pollutant load Saturday 4.285.967,57 grams/day percentages: CO: 91,59%, NOx: 6,99%, PM10: 1,13% and SO2: 0,29%. The pollution load on the Sunday 5.215.978,35 grams/day percentages: CO: 92,29%, NOx: 6,41%, PM10: 1,04% and SO2: 0,26%.The main contribution of CO and NO2 pollutant load is predominantly gasoline fueled cars, the dominant source of PM10 motorcycle and SO2 pollutant load is the dominant truck. The results of ambient air quality monitoring for parameters of CO, NOx, PM10 and SO2 in Soebrantas streets on Friday to Sunday is still below the threshold value of ambient air quality.Keywords: Transportation, Motor Vehicles, Pollutant Load
APLIKASI SISTEM INFORMASI GEOGRAFIS DALAM PENENTUAN KESESUAIAN KAWASAN KERAMBA JARING TANCAP DAN RUMPUT LAUT DI PERAIRAN PULAU BUNGURAN KABUPATEN NATUNA Syofyan, Irwandy; Jhonerie, Rommie; Siregar, Yusni Ikhwan
Jurnal Perikanan dan Kelautan Vol 15, No 02 (2010)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.15.02.%p

Abstract

Penelitian ini dilaksanakan dari bulan Juli sampai Desember 2008 didaerah perairan Pulau Bunguran Kabupaten Natuna. Tujuan dari penelitian untukmenentukan kesesuaian kawasan perairan untuk keramba jaring tancap danrumput laut. Metoda yang digunakan adalah metode survei dengan cara mengukurfaktor lingkungan perairan. Proses penentuan kesesuaian kawasan tersebutdilakukan dengan menggunakan operasi spasial dengan memanfaatkan aplikasiSIG. Untuk menentukan kesesuaian kawasang digunakan metode weightedoverlay. Dari penelitian diketahui bahwa dominansi kesesuaian kawasan untukkegiatan KJT dan rumput laut berada pada kelas sesuai yaitu sebesar 49,4%,kemudian kelas sangat sesuai sebesar 31,1% dan tidak sesuai sebesar 19,5% diperairan Pulau Bunguran.
Isolation, Identification and Antagonism Test of Heterotrohic Bacteria in Mangrove Plants Againts Pathogenic Bacteria (Vibrio alginolyticus, Aeromonas hydrophila, and Pseudomonas sp.) Afriza, Dinny; Effendi, Irwan; Siregar, Yusni Ikhwan
Jurnal Perikanan dan Kelautan Vol 24, No 1 (2019)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.24.1.61-68

Abstract

Heterotrophic bacteria are bacteria that are able to utilize organic matte as a source of carbon and energy. Heterotrophic bacteria live and have an important role in aquatic ecosystems. Pathogenic bacteria V. alginolyticus, A. hydrophila and Pseudomonas sp are pathogenic bacteria against fish. This study aims to isolate, identify, test the ability of the bacteria as antibacterial against pathogenic bacteria and determine the characteristics of heterotrophic bacteria using 16S rRNA sequences.this research was conducted from January to March 2019 whivh took place in the Mnagrove Area in the Marine Station Dumai, Riau Province. Based on the results of the research that has been done, it was obtained 8 pure bacterial isolates used to observe the morphology of bacterial colonies, biochemical tests and antagonism tests against pathogenic bacteria. Based on the results of the antagonism test, it was obtained the best 2 isolates for DNA analysis. The results of DNA analysis using PCR 16S rRNA method and BLAST analysis were Bacillus amyloliquefaciens strain SH20, and Bacillus cereus strain NY180