Rasoel Hamidy
Jurusan Ilmu Kelautan Universitas Riau

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Pendugaan Kandungan Karbon pada Acacia crassicarpa di Hutan Rawa Gambut (Studi Kasus di IUPHHK-HT PT. RAPP, Kabupaten Pelalawan) Ratna N, Ambar Tri; Hamidy, Rasoel
Jurnal Ilmu Lingkungan Vol 2, No 01 (2008)
Publisher : Jurnal Ilmu Lingkungan

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The studies of Carbon contents prediction in Acacia crassicarpa arounds rawa gambut forest KabupatenPelalawan were conducted. The estimation is generally based on allometric aqualition relating either carbon atbreast height (DBH). Variation of carbon contents influenced by tree biomass and parts of tree. Procedure toestablish estimation model of carbon contents are determining of moisture content, estimating the potential ofbiomass and the carbon contents. The results suggesting that carbon contents of A. crassicarpa of 2 and 4 yearsold 30.53 ton/ha and 43.19 ton/ha, respectively. When the carbon stocks develop using the full range of treewas compared to actual of carbon contents trees differed by 18.85%. The carbon contents were range from23.82 to 33.11 % and 24.84 to 41.40% for 2 and 4 years old, respectively.
KONSENTRASI LOGAM BERAT (CD DAN PB) PADA SEDIMEN PERMUKAAN PERAIRAN TELUK BAYUR PROVINSI SUMATERA BARAT INDONESIA Safitri, Nanci Aulia; Hamidy, Rasoel
Jurnal Ilmu Lingkungan Vol 3, No 02 (2009)
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The purpose of this study is to clarify the ecosystem quality of Bayur Bay based on heavymetalic elements (Cd and Pb) behaviour in surface sediment. Sediment samples were collectedusing grab sampler from 4 stasions in Bayur Bay , West Sumatera Province, Indonesia in Marchto April 2009. Surface sediment samples were used for the mechanical analysis by the settling-tube method, and mean size diameter was calculated based on the proportion of grain-sizedistribution. Concentration of Cd and of Pb in the samples were determined using AutomicAbsorption Spectrofotimetry (ASS). One Way Analysis Variance (ANOVA) was carried to clarifythe relation between the concentration of Cd, Pb and mean size diameter of sediment. Generaltrend of Cd and Pb distribution strongly indicate that the ecosystem quality of Bayur Bay is insame level for all stations as shown by result of one way anova (Tcalculate < Ttabel). The studyarea is under influence of human activities supplied Cd and Pb to the surface sediment. Resultsof linier regression analysis show negative correlation between Cd concentration and mean sizediameter (Y = -0.031x + 1.262). Contrastingly, correlation between Pb concentration and meansize diameter shows positive value (Y = 0,098x - 0,10). Cd and Pb concentrations in surfacesediment of Bayur Bay are lower than the ERL (Effect Range Low: Cd = 1,2 ppm; Pb = 46,7ppm) and ERM (Effect Range Median: Cd = 9,6 ppm; Pb = 218 ppm) indicating the Bayur Bayecosystem is not yet polluted by the concentrations.
STRUKTUR DAN KERAGAMAN KOMUNITAS KEPITING DI KAWASAN HUTAN MANGROVE STASIUN KELAUTAN UNIVERSITAS RIAU, DESA PURNAMA DUMAI Hamidy, Rasoel
Jurnal Ilmu Lingkungan Vol 4, No 02 (2010)
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This study was carried out from October to December 2008. The species collected consisted of10 species of crabs representing 4 family and 4 genus. The result of this study showed thatdiversity of crab and productivity of mangrove area at position is enough for animal life, andless ecology pressure.
KAJIAN KEMAMPUAN DRAINASE DALAM MENAMPUNG INTENSITAS HUJAN MAKSIMUM PADA KAWASAN PERUMAHAN DI KELURAHAN DUMAI KOTA Hamidy, Rasoel; Vironika, Reni Okta
Jurnal Ilmu Lingkungan Vol 5, No 01 (2011)
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The purpose of this study is to analyze the maximum precipitation intensity changes between theperiod 2002 - 2009 and know the drainage capacity to accommodate the maximum rainfallintensity. This research was conducted in the Village District Town Dumai, Dumai City who isprone to occurrence of inundation / flooding during rain. The research method using descriptiveof an explorative approach that aims to describe the condition and status of the phenomenon ofthe drainage channel and residential environment. The results showed that rainfall intensity forrainfall duration 30 minutes with 10-year anniversary when obtained at 257.999 mm / hour. Thecalculation of drainage channels that can accommodate a maximum flow rate / peak dischargecontained in SP1 primary drainage and secondary drainage channels SS1, SS4, and SS11. Theinability of other drainse channel accommodate the maximum flow causing inundation /flooding, in addition to blockage of drainage channels by the waste also adds to the severity ofthe situation
KOMPOSISI DAN STRUKTUR PERMUDAAN POHON PIONIR BERDASARKAN JENIS TANAH DI KABUPATEN SIAK Edwar, Edmond; Hamidy, Rasoel; Siregar, Sofyan Husein
Jurnal Ilmu Lingkungan Vol 5, No 02 (2011)
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The results showed that the soil type Latosol consist of 49 species, dominance of the highesttype for Forest Seedlings were Manggis Hutan (Garcinia parvifolia), saplings of Ludai(Sapium beccatum), poles of Mahang (Macaranga gigantea), tree of Sendok-Sendok(Endospermum javanicum). Soil type of Brown Forest Soil consist of 28 species, The highestdominance Seedlings type of Pulai Sudu (Kibatalia boornensis), saplings of Tempinis (Sloetiaelongata), pole of Terap (Artocarpus elasticus), tree of Mahang (Macaranga gigantea). Soiltypes of Organosol consist of 21 species, the highest level of dominance type seedlings KelatMerah (Sizygium cuminii), Kelat Putih (Sizygium subglauca), Kopi-Kopi (Randiaanisophylla), the saplings of Tenggek Burung (Evodia aromatica), the pole of TenggekBurung (Evodia aromatica), The tree of Mahang (Macaranga hypoleuca). The highestspecies dominance values index (1) at the level of tree on the soil type of Organosol andLatosol, while the lowest (0.0426) at the level of sapling on the soil type of Latosol. Thehighest of diversity value index (3.4837) at the level of saplings on the soil type of Latosol,while the lowest (0.0000) at the level of trees on the soil type of Organosol and Latosol. Thehighest of Similarity index (23.33) at the similarity between Brown Forest Soil and Latosol atthe level of saplings, while the lowest of similarity index (0.00) at the similarity betweenLatosol and Brown Forest Soil at the level of tree, Organosol and Latosol at the level ofpoles and tree, Brown Forest Soil and Organosol at the level of seedling, pole and tree.
ANALISIS BIOMASSA DAN CADANGAN KARBON TANAMAN BAMBU BELANGKE (Gigantochloa pruriens) Suprihatno, Bambang; Hamidy, Rasoel; Amin, Bintal
Jurnal Ilmu Lingkungan Vol 6, No 01 (2012)
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The research was conducted from November 2011 to January 2012 in the mineral soil ofKebun Kayangan, PT Salim Ivomas Pratama to estimate the potential of carbon stock of thebamboo and to quantify the amount of carbon that can be absorbed by bamboo plants. Theresults of the research showed that carbon content of culm biomass from 50.68 to 54.87%(mean of 53.84%), leaf from 47.68 to 53.76% (mean of 51.47%) and twigs/branches from51,97 to 52,86 % (mean of 52.48%). The average of carbon content of the bamboo plantbiomass was 52.60%. Biomass obtained from the bamboo plants with different heights were145.07 g (1 m height), 461.33 g (3 m height), 834.79 g (5 m height), 999.24 g (7 m height),781.14 g (9 m height), 958.31 g (11 m height) and 1,925.67 g (12 m height). The average ofthe bamboo biomass was 872.22 g/individual. The potential of the bamboo biomass from23.47 to 29.82 t ha -1 with a mean of 26.30 t ha-1. Carbon stocks obtained from the bambooplants with different heights were 78.07 g C (1 m height), 248.04 g C (3 m height), 448.64 gC (5 m height), 541.68 g C (7 m height), 425.72 g C (9 m height), 519.67 g C (11 m height),1,029.79 g C (12 m height) and the average was 470.23 g C/individual. The potential ofcarbon stock of the bamboo ranged from 12.61 to 15.93 t C ha-1 with a mean of 14.08 t C ha -1. Total carbon stock in bamboo plantation were 52.55 t C ha-1, which was itemized asfollows : carbon stocks of bamboo 14.08 t C ha -1, under storey 0.11 t C ha-1, litter 2.83 t Cha-1 and soil 35.53 t C ha -1. Allometric equations to estimate of biomass according to high ofbamboo plant was Polynomial Y = - 520.31 + 684.62x – 113.76x2 + 6.0227x3 {Y = biomass(g) and x = plant height (m)}. Allometric equations to estimate carbon stock according tohigh of bamboo plant was Polynomial Y = - 274.64 + 362.45x – 59.81x2 + 3.1594x3 {Y =carbon stocks (g) and x = plant height (m)}.
Valuasi Ekonomi Ekosistem Mangrove Di Desa Teluk Pambang Kecamatan Bantan Kabupaten Bengkalis Provinsi Riau Qodrina, Langga; Hamidy, Rasoel
Jurnal Ilmu Lingkungan Vol 6, No 2 (2012)
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This research was conducted in Teluk Pambang Village Bantan Sub District BengkalisRegion dated from July to September 2011. This study aims to value the total economicpotential value of mangrove ecosystem in Teluk Pambang Village, determine alternativepattern of utilization and management. The method used in this study was survey method.The economic value was calculated based on the total direct economic value, indirecteconomic value, option value and existence value. This study also calculated net presentvalue (NPV) for 25 years in order to get representation for economic value in future.According to the data analysis, it was found 10 species of mangroves which has economicvalue and 7 species of mangrove fauna. The total economic value for 1 acre of mangroveecosystem was IDR. 1,409,454,390.18 acre-1 y-1 with net present value (NPV) was IDR.12,793,673,903.53 acre-1 for 25 year mangrove rotation cycle. While, the percentagebetween total resources and utilization was only 0.035%. According to this research, it canbe arranged 3 alternatives for utilizations in mangrove area. The best result of the alternativeshas been made is alternative with prioritize for sustainable ecosystem. Moreover, themanagement scheme which can be done for this mangrove area is a model of conservationmanagement with the aim of maintaining the sustainability of environmental services.
REGENERASI ALAMI SEMAI Rhizophora Apiculata DI KAWASAN INDUSTRI PERMINYAKAN DAN KAWASAN NON INDUSTRI PROVINSI RIAU Syahrial, Syahrial; Sustriani, Yeni; Susammesin, Verid Aria; Taher, Desi Purnamasari; Atikah, Nur; Lubis, Khairul Mukmin; Ilahi, Ilham; Mulyadi, Aras; Amin, Bintal; Hamidy, Rasoel; Siregar, Sofyan H
JURNAL ENGGANO Vol 2, No 2 (2017): Jurnal Enggano
Publisher : University of Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.165 KB) | DOI: 10.31186/jenggano.2.2.208-217

Abstract

Hutan mangrove menyediakan berbagai pelayanan ekologi, namun saat ini sedang mengalami tekanan dari aktivitas manusia seperti industrialisasi di wilayah pesisir. Kajian regenerasi alami semai populasi Rhizophora apiculata telah dilakukan diantara kawasan industri perminyakan dan kawasan non industri Provinsi Riau. Hasil penelitian menunjukan bahwa kerapatan regenerasi semai alami R. apiculata tertingginya berada di kawasan non industri (Stasiun 4) dan kerapatan semai alami terendahnya berada di kawasan industri perminyakan (Stasiun 1, 2 dan 3). Selain itu, faktor kualitas perairan masih dalam batasan toleransi bagi kehidupan regenerasi semai alami R. apiculata dengan suhu perairan tertingginya berada di Stasiun 3, salinitas (Stasiun 4), pH (Stasiun 1), DO (Stasiun 4) dan potensial redoks (Stasiun 1). Selain itu, berdasarkan analisis keterkaitan kualitas perairan terhadap regenerasi semai alami R. apiculata mengunakan PCA, pada Stasiun 2, 3 dan 4 dicirikan oleh parameter suhu dan DO. Sementara Stasiun 1 dicirikan oleh parameter potensial redoks dan pH.
STUDI PENGELOLAAN SAMPAH DILIHAT DARIASPEK TEKNIS KESEHATANDI KABUPATEN KARIMUN Sugema, Brata; Hamidy, Rasoel
Jurnal Kajian Lingkungan Vol 1, No 01 (2013)
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Waste is all product or object of rest in the form of solid as effect of human being activity,assumed no advantage and do not desire by its owner and thrown as goods which of no use.Make-up of the amount of resident of human being activity amount and resident directly canimprove the amount of yielded waste production in Karimun District. Considering hygienerepresent requirement and rights with hence needed by strategy in managing waste start fromplace of management and transportation finally matching with technical aspect of healthspecified by government. This research is descriptive which depict system management ofhealth aspect condition and waste residing in around place management of waste in KarimunDistrict. Way of collecting data with direct interview and admission filling of quisioner is andalso conducted observation in management of waste in Karimun District. Management ofwaste in Karimun District evaluated from technical aspect of health still not yet followedhealth aspect in the case of ready facility and medium also system management ofwaste.Thereby need serious attention to anticipate early possible the existence of generateddisease and contamination of waste exist in karimun District and its need cooperationbetween government with society in improving healthy environment to society.
UJI ESCHERICHIA COLI DAN FLUORIDA AIR MINUM BUNGKUSAN PLASTIK PADA RUMAH MAKAN DI KECAMATAN RUMBAI PESISIR PEKANBARU Agmalia, Dian; Hamidy, Rasoel; Anita, Sofia
Jurnal Kajian Lingkungan Vol 1, No 01 (2013)
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The requirements of drinking water contain no coliform and fluoride in about 1,5 ppm. Theaims of this research to to find out the concentration of escherichia coli anf fluoride wrappedusing plastic bags at restaurants in Rumbai Pesisir Pekanbaru. The method of this researchis an survey method. To analyse escherichia coli used Most Probable Number Method andfluoride used SPANDS Method. The results show that all sample bags (100%) taken werecontaminated by coliform and 60% contained escherichia coli. It was found that out of fivetested samples, two of them contained Fluoride more than maximum threshold requirement ofthe drinking water quality when referred to the Health Minister Regulation Number492/Menkes/PER/IV/2010.