Browsing by Author "Siregar, Yusni Ikhwan"

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    Aplikasi Sistem Informasi Geografis Dalam Penentuan Kesesuaian Kawasan Keramba Jaring Tancap Dan Rumput Laut Di Perairan Pulau Bunguran Kabupaten Natuna
    (2015-02-28) Syofyan, Irwandy; Jhonerie, Rommie; Siregar, Yusni Ikhwan
    Penelitian ini dilaksanakan dari bulan Juli sampai Desember 2008 di daerah perairan Pulau Bunguran Kabupaten Natuna. Tujuan dari penelitian untuk menentukan kesesuaian kawasan perairan untuk keramba jaring tancap dan rumput laut. Metoda yang digunakan adalah metode survei dengan cara mengukur faktor lingkungan perairan. Proses penentuan kesesuaian kawasan tersebut dilakukan dengan menggunakan operasi spasial dengan memanfaatkan aplikasi SIG. Untuk menentukan kesesuaian kawasang digunakan metode weighted overlay. Dari penelitian diketahui bahwa dominansi kesesuaian kawasan untuk kegiatan 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% di perairan Pulau Bunguran.
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    Beban Emisi Gas Buang Kendaraan Bermotor Berdasarkan Jarak Tempuh Dan Jumlah Kendaraan Pada Persimpangan Pasar Pagi Arengka Pekanbaru
    (wahyu sari yeni, 2019-01-09) Darimi, Darimi; Siregar, Yusni Ikhwan; Anita, Sofia
    Background and Purpose: Air pollution will make the city environment unhealthy and can interfere with human health, therefore air pollution must be strived so as not to increase. One way to reduce air pollution in urban areas is to reduce greenhouse gas emissions and build Green Open Space (RTH). Therefore the purpose of this study is to calculate the exhaust emissions of motor vehicles in the city of Pekanbaru based on the distance traveled and the fuel used. Materials and Methods: Air pollution at a certain level can be a combination of one or more pollutants, either in the form of solids, liquids or incoming gases dispersed into the air and then spread to the surrounding environment. Further analysis in this study is to analyze environmental factors related to community environmental health and research methods is a quantitative method that is trueexperiment, the equation used is the emission load equation of the exhaust gas. Result: Some compounds produced from complete combustion such as non-toxic CO2, have recently become a concern of people. CO2 compounds are actually naturally occurring components in the air. Therefore CO2 previously did not keep the order of air pollution which is more than normal attention due to excessive use of fuel every year, so that in this study shows an increase in CO2 with increasing number of vehicles and mileage. Conclusion: Exhaust emissions are strongly influenced by the distance traveled and the number of vehicles, but there are other factors associated with increased gas emissions, namely congestion, so that technological advances in reducing the rate of increase in exhaust emissions are no longer functioning. Other factors that need to be taken into consideration are the number of vehicles, vehicle age, vehicle maintenance, vehicle speed, type of fuel, amount of fuel, and engine capacity that can affect vehicle exhaust emissions on the intersection of the morning market.
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    Bioeconomic Analysis of Capture Fisheries in Bengkalis Regency
    (2016-03-29) Rengi, Pareng; Tang, Usman M; Siregar, Yusni Ikhwan
    Bengkalis coastal and offshore seas are well known for high fishing productivity. Fisheries sector had a significant contribution to regional economy, thus the development of fisheries become important for local government policy to increase fishermen welfare. However, it was indicated that the Bengkalis fishing production showed a decreasing trend which suggested an overfishing status. The present research aimed to analyze the fisheries resources state in Bengkalis Regency, and performed a Shift Share (SS) Analysis as well as Location Quotient (LQ) Analysis, to determine the trend of fisheries sector to Bengkalis economy. Furthermore, Bioeconomic Analysis and Institutional Analysis were also carried out to describe the institutional aspect. Apparently, Parang-parang (Chirocentrus dorab) have been over exploited. Bioeconomic analysis revealed that exploitation rate of Parang-parang reached 263%. Natural growth level of Parang-parang was calculated of 1,142, capture capacity coefficient was 0,0000002721 and carrying capacity coefficient was 168.882,96. Bioeconomic analysis result of Kurau (Eleutheronema tetradactylum) was overfishing 33,42%. Natural growth level of Kurau was 0,614, capture capacity coefficient was 0,00000020 and carrying capacity coefficient was 28.820. Fisheries management policy of this economic resources had better used MEY regime. Based on LQ and SS analysis, it appeared that fisheries sector had high effects to regional economic so that fisheries development provide significantly contribution to public welfare opportunity. The degradation of marine ecosystem and high exploitation (overfishing) become a serious problem. The role of social culture (local wisdom) should be revitalized. Stakeholders involved in fisheries development policy were fiseheries office, Bengkalis Parliament, Forestry Departement and Bengkalis Environmental Agency.
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    Daya Dukung Habitat Gajah Sumatera (Elephas Maximus Sumatranus Temminck) Di Taman Nasional Tesso Nilo Provinsi Riau
    (2018-04-02) Yoza, Defri; Siregar, Yusni Ikhwan
    The same land use between elephants and humans results in elephant conflict with humans. This study aims to determine the Sumatran elephant population and the carrying capacity of the Sumatran elephant feed in the area of Tesso Nilo National Park, Riau Province. This research was conducted by using Purposive Sampling method by determining elephant position on path, determination of sample plot of Sumatran elephant feed location and collecting of bearing capacity of Sumatran elephant. The data obtained are vegetation composition (species density, species type, species dominance), Important Value Index (INP), Type Diversity, Feed Biomass, food Capacity and Habitat Support capacity. Based on the inventory and data from WWF, in Lubuk Kembang Bung gaa Village there are 2 groups of Sumatran elephants with a total of 120-130 heads. The results showed that the availability of feed in 1 Ha area in Tesso Nilo National Park is sufficient for 0,5 heads of Sumatran elephant. One head elephant need 2 ha for feed
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    Fishing Ground and Fish Estimation of Fish Potency of Bengkalis Waters Riau Province
    (2016-04-02) Rengi, Pareng; Tang, Usman; Siregar, Yusni Ikhwan
    A study on fishing ground and estimation of maximum sustainable yield of fish from Bengkalis waters were conducted during October - November 2012. Environmental condition of the fishing ground were examined and analyzed in-situ as well as exsitu, for physical and chemical properties. The hydroacoustic method (Mitson, 1983) were performed to estimate the presence of fish biomass including pelagic and demersal fish. The fish composition of fish catch were described from fish catch. The proportion of pelagic and demersal fish in coastal waters of Bengkalis approximately 50%-50%. Based on consideration that fishing and natural mortality of 50%, the stock of pelagic fish and demersal revealed 2,1 and 89 tons, respectively. It was suggested that allowed fish catch of pelagic should not exceed 10 pounds/month, providing that fishing period of 12 months. Likewise, the demersal fish should not exceed the amount of 38 pounds/month
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    Konflik Dan Mitigasi Konflik Gajah Sumatera (Elephas Maximus Sumatranus Temminck) Dengan Manusia Berdasarkan Persepsi Masyarakat Di Sekitar Taman Nasional Tesso Nilo Provinsi Riau
    (wahyu sari yeni, 2019-01-09) Yoza, Defri; Siregar, Yusni Ikhwan; Mulyadi, Aras; Sujianto, Sujianto
    Elephant conflicts with humans occur in areas that are used together by elephants with humans. This study aims to identify people's perceptions of elephant conflict with humans and mitigation of elephant conflict with humans. In this study, the interview method was used with the determination of respondents through purposive sampling. The study was conducted in 2017 in two villages around Tesso Nilo National Park that is Lubuk Kembang Bunga Village and Air Hitam Village. Community perceptions in both villages namely Air Hitam Village and Lubuk Kembang Bunga Village are generally positive about elephants and elephant conflict with humans. The mitigation of elephant and human conflict is expected by the community in two villages in the way of planting commodities that are not prefered by elephants, planting elephant feed on their paths and replanting forests in elephant habitat
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    KONTAMINASI Pb, Cu, Cd dan Zn PADA SEDIMEN LAUT SEBAGAI INDIKATOR PENCEMAR DI SELAT PANJANG RIAU
    (2019-11) Siregar, Yusni Ikhwan; Zulkifli, Zulkifli
    Coastal waters were oftenly considerred as a final destination of pollution transported from landbase as well as seabased activities. The present study aims at gaining information on contamination of Pb, Cu, Cd and Zn in the srait of Selat Panjang. Heavy metals analysis were performed for water column as well as marine sedimen as indicator of pollution. Five stasion with three replicates were spacially established within the study area. The sediment samples were collected with Eckman Grab and kept in ice box prior to analysing in Laboratorium. Heavy metals analysis were performed using AAS Perkin Elmer (Model 3110). It revealed that concentration of Pb, Cu, Cd and Zn of sediment range; (0,157-0,330), (0.035-0.374), (0.083-1.127) and (0.498-0.988), respectively. Compared to heavy metals concentration in water column, the concentration factors in sediment appeared 35, 40, 40 and 5.5 fold, respectively. It indicated that the ecokinetics of heavy metals in the long run accumulated in marine sediment.
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    Pemanasan Global Dan Respon Fisiologis Hewan Akuatik
    (2015-01-22) Siregar, Yusni Ikhwan
    Ancaman Pemanasan Global telah menjadi isu utama lingkungan dan semakin intense dibicarakan di seantero dunia dalam dekade terakhir. Gejala, ancaman terhadap berbagai ekosistem daratan (terrestrial ecosystem) maupun perairan (Aquatic ecosystem), antisipasi mitigasi bencana pemanasan global, telah dibicarakan pada berbagai forum seminar, konferensi ilmuwan, dan pada level pemimpin Negara sebagai pengambil kebijakan.
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    PENGARUH VARIABEL KUALITAS AIR TERHADAP PRODUKTIVITAS UDANG VANAME (LITOPENAEUS VANNAMEI) DI KAWASAN PERTAMBAKAN DI DESA SUNGAI PINANG, KECAMATAN LINGGA TIMUR, KABUPATEN LINGGA, PROVINSI KEPULAUAN RIAU
    (2019-11) Eddiwan, Eddiwan; Sukendi, Sukendi; Siregar, Yusni Ikhwan
    Sungai Pinang Village is one of the villages in Lingga Timur District, Lingga Regency, Riau Islands, which is developing into a fishery production center. The development of aquaculture business, especially shrimp farming has grown rapidly, but on the other hand, there is a change in the quality and quality of the waters. Water quality is very influential on the growth of vaname shrimps (Litopenaeus vannamei) that are kept in ponds so that the impact on high and low productivity of vaname shrimps. Therefore, this study examined several variables of water quality that affect the productivity of vaname shrimp in ponds. This research was carried out in a fishpond area that is currently operational in Sungai Pinang Village, East Lingga District, Lingga Regency. The method used is the survey method and interviews with respondents in the Sungai Pinang village through the submission of the questionnaire. This interview is needed to get primary data on-farm productivity. While the water quality data obtained by direct measurement at the pond location and pond water sources, by taking water samples, which are then analyzed in the Aquatic Biology laboratory. As independent variables are water quality, namely temperature, dissolved oxygen (DO), salinity, pH, total suspended solids/total suspended solids (TSS), turbidity, nitrate, nitrite, phosphate and total organic matter (BOT). While the dependent variable is vaname shrimp productivity. The 'best' multiple regression model selections are based on the backward method. The results showed vaname shrimp productivity in the range of 133.3-3,000.0 kg/ha with an average of 690.38 kg/ha. Water quality variables that have a positive effect on vaname shrimp productivity are nitrates and phosphates. While water quality variables that negatively affect the productivity of vaname shrimp are pH and TSS.
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    Physical and Chemical Peatsoil Properties Assessment in Kampar Peninsular Region, Sumatera, Indonesia
    (2017-10-14) Darmawan, Budi; Siregar, Yusni Ikhwan; Sukendi, Sukendi; Zahrah, Siti
    Forests and peat fires prior to agriculture use has become a perennial problem in Indonesia, especially in the last 20 years during the dry season. Most of that smoke originates from human activity - land use and land cover change (LULCC) i.e. illegal forests and peat land, slash and burn method during cultivation or plantation agriculture development, etc. In order to understand how big the burning impact to peat soil parameters change in those three different conditions i.e. before burning (naturally), seven days after burning and ninety days after burning in same site location, accordingly we conducted a study. This research was conducted in Teluk Meranti District, Kampar Peninsular Region, Sumatera, Indonesia. The study was carried out in January till December 2014. The research result showed that same physical and chemical parameters had changed significantly following burning compared to natural condition.
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    Skrining Bakteri Hidrokarbonoklastik Dalampeningkatan Degradasi Minyak Bumi Dari Gas Bootpetapahan, Riau
    (wahyu sari yeni, 2019-01-09) Sayuti, Irda; Siregar, Yusni Ikhwan; Amin, Bintal; Agustien, Anthoni
    The research about Hydrocarbonoclaustic bacterial screening studies from the Gas boot area exploration Gathering Station (GS) of PT. Chevron Pacific Indonesia Petapahan Riau has done. The study aims to find hydrocarbonoclastic bacteria and test its ability to degrade petroleum. The research was carried out by the experimental method. The first step is isolating bacteria from the Gas boot. Isolation results obtained 4 bacterial isolates that were suspected as Hydrocarbonoclastic bacteria. The second stage is screening to prove the ability of these bacterial isolates to degrade petroleum. The screening method is done by growing bacterial isolates on 2% SMSS + petroleum media. The screening results showed 4 bacterial isolates were Hydrocarbonoclastic bacteria because it was known to be able to degrade petroleum hydrocarbons marked by a decrease in TPH and COD levels. The highest degradation rate of TPH and COD was shown by bacterial isolates IMB-03 with degradation rates of 39.23% TPH and 37.98% COD
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    STRATEGI PENGELOLAAN PENGGUNAAN ALAT PELINDUNG DIRI (APD) DI LABORATORIUM KLINIK KOTA PEKANBARU
    (Program Doktor Ilmu Lingkungan UNRI, 2019-11-16) Yulianti, Fepy; Siregar, Yusni Ikhwan; Syahril, Syahril
    The number of work accidents in Indonesia tends to increase. There were 157.313 cases of work accidents during 2018. The laboratory is a workplace that has many potential hazards such as spills, chemical explosive reactions, punctured needles, exposure to infectious material. Workers in the laboratory are required to use the appropiate PPE, which is a lab coat, shoes, masks and gloves. Managers must provide proper PPE at work. Ineffective use, leads a problem that arises in the field. Management strategies for utilizing appropriate PPE usage are needed to improve the health status of workers. Percentage of clinical laboratory workers in Pekanbaru City who have knowledge based on STR ownership (68.61%) and the availability of work guidelines in the form of SOP (65%), which classified as the quite good category. The practice of PPE usege and the role of managers in managing, supplying, procuring and number of PPE is also classified as good category. Waste management in the laboratory uses a third party. Policy in the form of rewards (35%), administration of decrees/ sanctions (55%), availability of PPE signs / symbols (30%), providing training to each officer (40%) and providing health insurance in the form of MCU (50%) and vaccination (10%) is classified as poor category. Determination of management strategies for the use of PPE in the Pekanbaru clinical laboratory in this study using the SWOT calculation. The right strategy used from the results of the SWOT calculation is the survival strategy. The disadvantage is that there are no signs / symbols of PPE guidelines when entering the laboratory and the threat is that PPE waste that has been used without being managed properly according to B3 waste regulations will contaminate the environment.