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Thamrin '
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Agriculture, Biological Sciences & Forestry Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Immunology & microbiology Other

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Valuasi Ekonomi Hutan Wisata Kota Dumai Propinsi Riau Nuryasin Abdillah; Mubarak '; Thamrin '
Ilmu Perairan (Aquatic Science) Vol 8, No 1 (2010)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jipas.8.1.p.58-66

Abstract

The research result shown that the direct use value consist of economic value ofwoods in the Resort forest of Dumai for bandwidth of 3.298 acres is Rp8.649.994.400. With the value NPV within 25 years is Rp 78.454.488.312,11.Economic value of cord wood itself within 1 year is Rp 388.756.500. While theeconomic value within 25 years is Rp 3.466.901.293,70. The economic value ofdecorated plants is Rp 608.415.040, with NPV within 25 years is Rp5.495.376.545,72-. The economic value of fauna is 330.030.000,-, Value NPVwithin the next 25 years is Rp 1.109.457.677. The economic value of medicineplants within 25 years (NPV) is Rp 10.043.360.612,61. Meanwhile indirect use valuewhich is consist of economic value of carbon absorption of the forest is Rp51.824.772.000, Value of NPV within 25 years from that carbon absorption is Rp470.388.298.259,56 and the economic value of the existence forest of Dumai is Rp49.266.513.000,-. The value of existence forest of Dumai within 25 years withdiscount factor 10% is Rp 447.148.724.859,53. Total economic value resort forest ofDumai is Rp.112,177,938,617 and Value NPV within 25 years with assumptionsteady price and with rate of interest 10% is Rp.1,017,970,152,600.Key words : Economic validation, Resort forest Dumai, Benefit, Productivity, contingen.
Analisis Logam Berat pada Air dan Sedimen di Perairan Pantai Pulau Singkep Kepulauan Riau Jamalus Ishak; Bintal Amin; Thamrin '
Berkala Perikanan Terubuk Vol 42, No 2 (2014): Juli 2014
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (552.557 KB) | DOI: 10.31258/terubuk.42.2.%p

Abstract

ABSTRACTAnalysis of the content of heavy metals Cu, Pb and Zn in seawater, sediment and snails (C. obtusa) in Singkep island held on 28 November 2013 - 5 Januari 2014. All parameters measured water quality is still within tolerable limits for the survival of the aquatic organism. Samples of sea water, sediment and snails (C. obtusa) were taken from five stations with three replicates at each station. Heavy metals were analyzed in the KLH Pekanbaru laboratory using Atomic Abortion AA-7000 Shimadzu spectrophotometer. The results showed that the average content of heavy metals in Singkep waters is 0.0724 mg/l (Cu), 0.1285 mg/l (Pb)) and 0.11525 mg/l (Zn), the sediment was 10, 7513 ug/g (Cu), 25.7750 ug/g (Pb) and 34.1493 mg/g (Zn). Simple linear regression analysis indicates negative correlation between metals content in sea water and in sediment with Y = 12,864 –29,178X, r = 0,1616 (Cu), Y =26,181 – 3,1564X, r = 0,0632(Pb) ; and Y =45,479 - 61,286X, r = 0,2689 ( Zn).Keywords: heavy metals, water, sediment, Snail, Singkep Island
PENGELOLAAN KAWASAN LINDUNG DANAU PULAU BESAR DAN DANAU BAWAH-ZAMRUD KABUPATEN SIAK PROVINSI RIAU Hendrik '; Thamrin '; T.E.B. Soesilo; Zulkarnain '
Berkala Perikanan Terubuk Vol 41, No 2 (2013): Juli 2013
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (86.016 KB) | DOI: 10.31258/terubuk.41.2.111-123

Abstract

The Research on the management of protected areas Danau pulau Besarand Danau Bawah Zamrud Siak Regency Riau Province was conducted in Januaryto December 2010. Aimed of this reseach was to created model of a sustainablemanagement of Pulau Besar lake and Bawah lake of Zamrud. The results showedthat sustainable management of the lake can be done with a variety of scenariosand policies. Scenarios and policies through the reduction of sedimentconcentration by 50% and a reduction gear by 5% every year. The result alsoincrease in CPUE of 12.1%, and the catch fisherman increased by an average78.02 kg per year and increased revenues percapita of Rp.1.123.569 per year, thecatch and optimal revenue occurred in 2016.Keywords : Sediment, CPUE, Effort, Optimal Revenue
The Relations Between the Concentration of Nitrate and Phosphate to Abundance of Dinoflagellates in Enhalus acoroides Beds in Sungai Enam Coastal Waters of Bintan Regency of Riau Islands Province Dwi Putri Pratiwi; Irvina Nurrachmi; Thamrin '
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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Abstract

The research was conducted in June 2015 in Sungai Enam coast of Bintan Island, with the aims to know the difference abundance of dinoflagellates in every station and to knows the relations between nitrate concentration and phosphate concentration to the abundance of dinoflagellates in seagrass beds. The samples were taken from 3 stations with 3 sampling points. The result showed that the average of nitrate concentration was 0.0029 mg/l and the average of phosphate concentration was 0.1219 mg/l. This research identified 10 species of dinoflagellates, with the highest abundance was found in station 1 (0.13 cells/cm2) and the lowest was found in station 2 (0.10 cells/cm2). The results of the simple linear regression of nitrate and phosphate concentration showed a positive relation with dinoflagellates abundance, that means if the concentration of nitrate and phosphate raising the dinoflagellates abundance was also increasing.Key words: nitrate, phosphate, Dinoflagellates, Sungai Enam Waters, Bintan
POTENCY OF BLUE CARBON ON SEAGRASS (Cymodocea serrulata) IN SEAWATER OF PONCAN ISLAND SIBOLGA NORTH SUMATERA PROVINCE Indrawan Ade Putra; Thamrin '; Zulkifli '
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 rapid growth of industrial sectors in various countries leads to an increase in greenhouse gas emissions (global warming) such as carbon dioxide (CO2) in the atmosphere. One important aspect of reducing carbon gas is the maintenance of forests and oceans to store carbon. One of the potential marine resources as blue carbon is seagrass beds. Development of Poncan Island into a marine tourism area estimated will endanger the existence of seagrass vegetation that makes marine ecosystems as blue carbon is reduced, one of them which is Cymodocea serrulata. The research was conducted in March-May 2017 in the seawater of Poncan Island, Sibolga, which aims to determine the content of biomass, average of C-organic, and find parts of seagrass as the largest blue carbon. Sampling using a quadratic transect method performed at 3 station. The results show that the largest biomass and blue carbon of all research sites located in the Below Ground section (roots and rhizomes) with value is 27,57 gbk/m2 and 6,13 gC/m2. The highest average C-organic content in all research sites located in the root of the seagrass with value is 24,17%.Keywords: Global Warming, Seagrass, Biomass, C-organic, Blue Carbon, Poncan Island
The coral reef condition in cerocok beach waters of painan, West sumatera province Khairil Ihsan; Elizal '; Thamrin '
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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Abstract

The research of coral reef was conducted in october 2013 in Tikus Island Waters ofBengkulu, Bengkulu Province. This research aim to analyse health of coral based on hardliving coral cover and its. The research used survey method by applying Line InterceptTrasect (LIT) which consisting of three main stations in depth 5 m.The type of coral reef in Tikus Island was fringging reef. Coral lifeform’s found inthe area were Acropora Branching (ACB), Acropora Digitate (ACD), Acropora Encrusting(ACE), Acropora Submassive (ACS), Acropora Tabulate (ACT) Coral Branching (CB), CoralMassive (CM), Coral Submassive (CS), Coral foliose (CF), Coral Encrusting (CE), and Coral MushRoom (CMR). The conditions of coral reef in the depth of 5 m was in good with 73,50percentage.Keywords : Tikus Island, Coral Reef, Acropore
The Abundance of Epibenthic Dinoflagellates Toxic (Gambierdiscus sp., Prorocentrum sp. and Ostreopsis sp) in Seaweed Padina sp in Coastal Waters of Sungai Nipah Village Pesisir Selatan District West Sumatra Province Sentosa Yeremia; Thamrin '; Zulkifli '
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 species existence of dinoflagellates , i.e. Gambierdiscus sp., Prorocentrum sp. and Ostreopsis sp in the waters can cause disease, poisoning and blooming. This will cause disruption of aquatic ecosystems that cover the water surface and light penetration into the body of water will be hampered. Research to determine the abundance of toxic dinoflagellate epibenthic on seaweed Padina sp. in Sungai Nipah waters was conducted in August 2015. Sampling of epibenthic dinoflagellates attached to Padina sp was performed in three stations and each station consists of three sampling points.The results showed that the highest abundance epibentic toxic of dinoflagellates in the coastal waters of Sungai Nipah found at station 3 (803.28 cells / g). The highest abundance from all stations was a genus of Prorocentrum sp., with the total number of 947.74 cells/g, genus Gambierdiscus sp. had the smallest abundance at each respective station with a total of 41 cells/g while Ostreopsis sp has a evenly abundance in almost every station with a total abundance 562.93 cells/g.Keywords: Abundance, Epibenthic, Dinoflagellates, Toxic, Padina sp., Sungai Nipah Waters
ANALYSIS OF ZOOXANTHELLA DENSITY ON CORAL Acropora sp IN SIRONJONG GADANG ISLAND PESISIR SELATAN DISTRICT WEST SUMATRA Jefri Affandi; Thamrin '; Irvina Nurrachmi
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

AbstractThis research was conducted in September 2014 in the island of Sironjong Gadang, Koto XI Tarusan, Pesisir Selatan Disctrict of West Sumatra Province. The purpose of this study is to know the effect of depth towards the density of zooxanthella on the type of coral Acropora sp in Seronjong Gadang Island. While the benefits of the research are expected to obtain data and information about the density of zooxanthella on Acropora sp at the different depths. The methodology used in this research was a survey method and for coral sampling used purposive sampling technique, where samples are taken around the Seronjong Gadang Island with 3 different depth according to distribution of Acropora sp Coral reef that surround these waters. Parameter measurements of waters performed at each station. Samples were taken in the field, then followed by analyzing samples in the Laboratory.Depth is one of factor that affect the amount of light intensity that enters into the waters. The light that comes into the waters was symbion zooxanthella needed to perform fotosentesis in his life as the main supplier for coral as host. The deeper the waters, the less light that come into the waters. According to the research, there is the difference between the depth of 1 m, 5 ms and 10ms. The average of Zooxanthella cell in the depth of 1 m are 5.150.125 cell/cm2, then in the depth of 5 m are 3.552.525 cell/cm2, and in the depth of 10 m the average of zooxanthella are 3.242.241 cell/cm2. It means that the amount of Zooxnthella on Acropora sp decreased over by the increase of the depth.Keywords: Coral, Acropora sp, zooxanthella, Sironjong Gadang.
The Growth Rate of Propagul Rhizophora mucronata On the Intensity of tubes Various Shade In the Concong village In Indragiri Hilir Regency Riau Province Hoki kurniawan; Aras Mulyadi; Thamrin '
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

This research was conducted in June-July 2013 in the village of Concong In Indragiri Hilir Riau Province. The method used in this research was a randomized block design (RAK) consisting of 5 treatments and 10 replications thus obtained 50 experimental units. This study aimed to determine the rate of growth of propagules R. mucronata good at various intensities shade. The results showed growth of propagules R. mucronata significant effect on height growth, diameter, survival percentage, number of leaves and total biomass. High growth in most large propagules present in 25% shade intensity is 0,23 cm. Greatest diameter growth found in 25% and 75% shade intensity is 0,006 cm. Highest percentage of life, of all the intensity of shade. Leaf shade intensity is highest at 100% ie 1.3. Propagules greatest total biomass present in 50% shade intensity is 1.3 grams.Keywords: Riau, R. mucronata, Growth, Shade intensity
The Abundance of Toxic Dinoflagellate Gambierdiscus sp, Ostereopsis sp and Prorocentrum sp on Seagrass Leaf Thalassia sp from the Nirwana Beach West Sumatera Province Rawati Irmaida Sitorus; Thamrin '; Syafruddin Nasution
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

Dinoflagellate is a group of monocelullar microalga prossesing of double flagel. This organism can be found in a subtropic and also in a tropic marine water. Some potentially toxic epibentic dinoflagellate assemblage with macroalgae and potentially to cause blooming such as Gambierdiscus sp, Ostereopsis sp and Prorocentrum sp. Blooming of this population can generate "Red Tide". This reaserch was aimed to understand about dinoflagellate abundance of Gambierdiscus sp, Ostereopsis sp and Prorocentrum sp at Nirwana Beach, West Sumatera. The method used was a survey method. Sampling was done by cutting the seagrass stands, and from the stand taken three leaves and then stored in plastic bags containing clean sea waters. The dinoflagellates were separated from seagrass leaves by shaking in a plastic bags. And then filtered with 135μm and 20 μm respectively. Dinoflagellate then observed on a Sedgewick Rafter Cell under a microscope. The results showed that the highest abundance of dinoflagellate on Thalassia sp found at station 1 (132 cell/g leaf). The lowest abundance occurred at station 3 (69 cell/g leaf), which close to mangrove area. The most abundance of all species was Prorocentrum sp, while the lowest abundance cell was Gambierdiscus sp.Key word: Dinoflagellate, Abundance, Seagrass, West Sumatera
Co-Authors Antonius ' Aras Mulyadi Arwinda Novitri Bayu Oktavian Bintal Amin Cik Mas Edison Dessy Yoswaty Dwi Putri Pratiwi Elizal, Elizal Hendrik ' Hoki kurniawan Indrawan Ade Putra Irvina Nurachmi Jamalus Ishak Jefri Affandi Joni ' Joromun Rumapea Junaidi ' Khaidir ' Khairil Ihsan Kiki Harry Wijaya Liviawati ' Mubarak ' Musrifin Ghalib Nuryasin Abdillah Petti Apriani Rahdian Putra Rawati Irmaida Sitorus Rita Wiyati Rivaldi Ananda Dwi Putra Romeo ' Ryan Mustakim Sentosa Yeremia Sofyan Ikhwan Siregar Steven Silalahi Syafruddin Nasution T.E.B. Soesilo Winda Eboni Windarti Nofriyan Nengsih Yudi Sastriawan Yusni Ikhwan Yusni Ikhwan Siregar Zulkarnain ' Zulkifli '