Clemens Sihotang
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The vertical profile of chlorophyll-a in pinang dalam lake Buluh cina village siak hulu subdistrict kampar district Riau province Manurung, Arum Fuji R; Siagian, Madju; Sihotang, Clemens
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 research has been done in the Pinang Dalam Lake Buluh Cina Village SiakHulu Subdistrict Kampar District Riau Province. This research aims to understand thevertical profile of chlorophyll-a in this lake. The research used survey method. Thechlorophyll-a samples were collected from three station namely station I at inlet of lake ,station II in the midle of lake and station III the end of lake. There were three samplingsites in each station were in the surface, 1.5 Secchi depth and 2.5 Secchi depth. Samplingwas done three times, once a week. The result shown chlorophyll-a concentration insurface :17.26 μg/L -21.44 μg/L, 1.5 secchi depth 11.60 μg/L-14.43 μg/L and in 2.5 secchidepth 9.98 μg/L - 12.41 μg/L. A chlorophyll-a concentration in surface higher than in the1.5 secchi depth and 2.5 secchi depth. The chlorophyll-a concentration decrease with thedepth. Water quality result shown pH:5; DO: 2.60-5.88 mg/L; CO2: 6.79-13.31 mg/L;nitrate: 0.0134-0,093 mg/L; phosphate: 0.03-0.15 mg/L; phytoplankton abundance:3,420,423-4,293,075 cell/L; depth: 180.67-429 cm; transparency: 52.5-54.5 cm;temperature: 28oC-28.34oC. Based on data obtained, it can be concluded the consentrationof chlorophyll-a in Pinang Dalam Lake showed the trophic status was mesotrophic and allwater quality still support the life of aquatic organisms.Keywords : Chlorophyll-a, the vertical profile, Pinang Dalam Lake
The Vertical Profile Of Phosphate In Pinang Dalam Lake Buluh China Village Siak Hulu Sub District Kampar District Riau Province Sigalingging, Artauli; Siagian, Madju; Sihotang, Clemens
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 has been done in Pinang Dalam Oxbow Lake from January-February 2014. This research aims to understand the vertical profile of phosphatein Pinang Dalam oxbow lake. The research used survey method. The sample’swere taken from three station, the first station were at inlet, the second stationwere at middle of lake and the third station were at the end of lake. The measuringquality water parameters were depth, transparency, temperature, pH, dissolvedoxygen (DO), carbon dioxide and nitrate. Sampling vertical based ontransparency, namely at surface, 11/2Secchi depth, 21/2Secchi depth, and in thebottom of lake. The result shown the concentration of phosphate at the surface:0.03-0.04 Mg/L; in the 11/2Secchi depth: 0.07-0.09 Mg/L; in the 21/2Secchi depth:0.12-0.15 Mg/L and the bottom of lake: 0.15-0.19 Mg/L. The vertical profile ofphosphate showed the concentration increased with the increment of depth. Thewater quality parameter analyzed were temperature: 28oC–28.34oC; transparancy52.5-54.34 cm; depth: 180.67–429 cm; pH: 5; dissolved oxygen (DO): 1.64-5.88Mg/L; carbon dioxide: 6.79–14.65 Mg/L; nitrate: 0.01-0.13 Mg/L, andphytoplankton abudance: 3523363.7-4293075.48 cel/l. The concentration ofphosphate in Pinang Dalam Lake showed the tropic status was mesotropic and allthe water quality still support the aquatic organisms life.Keywords : Phosphate, the vertical profile, Pinang Dalam Lake
The Vertical Profile of Dissolved oxygen on the Bakuok Lake in Aursati Village Tambang Subdistrict Kampar District Riau Province Hasibuan, Hidayati; Simarmata, Asmika H.; Sihotang, Clemens
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 research has been done on the Bakuok Lake in Aursati Village Tambang Subdistrict District Kampar in March - April 2014. This research aims to understand the vertical profile of dissolved oxygen in this reservoir. The research used survey method. The sample’s were taken from three station and vertically in three sampling point. The parameters of water quality measured were pH, phosphate, nitrate, dissolved oxygen, free carbon dioxide, brightness, temperature and depth. Sampling vertical based on transparency, namely at surface, 11/2 Secchi depth and in the bottom of lake. The result shown the concentration of dissolved oxygen at the surface: 3,55 mg/L – 5,33 mg/L; in the 11/2 Secchi depth; 2,32 mg/L – 3,75 mg/L; and the bottom of lake: 1,78 mg/L – 2,74 mg/L. The vertical profile of dissolved oxygen showed the concentration increased with the increment of depth. The water quality parameter analyzed were temperature: 29,6oC – 30oC; transparancy 74,3 cm – 93,7 cm; depth: 208 cm – 332 cm; pH: 6, free karbon dioxide: 4,66 mg/L- 15,31 mg/L, nitrate ; 0.01 mg/L – 0.12 mg/L, phosphate: 0.01 mg/L – 0.17 mg/L and phytoplankton ranged from 20.415 sel/L – 39,509 sel/L. The concentration of dissolved oxygen in Bakuok Lake showed the highest decrement, in a general the parts quality still support the aquatic organism life.Keywords: Dissolved oxygen, the vertical profiles, Bakuok Lake
The Vertical Profiles of Phytoplankton in Danau Pinang Luar Buluh CinaVillage, Siak Hulu Sub- District, District Kampar, Riau Province Sihombing, Sudirman; siagian, Madju; Sihotang, Clemens
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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This research was conducted on the Danau Pinang Luar Buluh Cina Village Siak HuluSubdistrict District Kampar Riau Province in April - Mei 2013 and aims to understand thephytoplankton vertical rofil in the Pinang Luar Lake. There were 3 stations, station 1 isincomingwater area, Station 2 is agencies lake area. Station 3 is end of the lake area. Samplings wereconducted 3 times, once/week.This research aims to determine the vertical profile ofphytoplankton of Danau Pinang Luar.The results showed 24 species of phytoplankton were classified into four classes, namely:Chlorophyceae (11 species), Cyanophyceae (7 species),Bacillariophyceae (5 species), Euglenophyceae (1 species). Average phytoplankton abundancearound 61578 - 495112 cells/l, species diversity index (H ) of phytoplankton around 4,21 - 4,51,uniformity index around 0,87 - 0,93 and dominance index (C) of about 0,046- 0,063. While thewater quality parameters such as temperature of 31°C, the brightness around 65 - 70 cm, a depth ofapproximately 261,7 - 461.7 cm, pH 6, Dissolved Oxygen approximately 2,93 – 6,4 mg/l, free ofcarbon dioxide around 3,96 – 11,88 mg/l, Nitrate around 0,01-0,02 mg/l, Phosphate approximately0,023 mg/l. Based on the abundance of phytoplankton, concluded that Danau Pinang Luar Outerrelatively moderate fertility levels.Keyword : Phytoplankton, Buluh Cina Village, Danau Pinang Luar
Vertical Distributions of Chlorophyl-a in Pinang Luar Oxbow Lake Buluh China Village Siak Hulu Sub District Kampar District Riau Province Lumbangaol, Perawati Sartika; Siagian, Madju; Sihotang, Clemens
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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This research was conducted of Mei-June 2013 in Pinang Luar Oxbow that is located in the Buluh China Village. This research aims to understand the vertical distributions of chlorophyl-a.Chlorophyl-a samples were collected from 3 stations. In each stations, there are 3 sampling sites, in the surface 1,5 and 2,5 Secchi depth. Sampling was done three times, once a week. Result shown that the chlorophyl-a content ranged from 10,58 – 23,21 μg/l. Water quality parameters values were: depth : 261,7–461,7 cm; temperature: 31 oC; transparency: 65–70 cm; pH: 6; DO: 3,07 – 6,4 mg/l; CO2: 3,96–11,88 mg/l; phosphate: 0,013– 0,019 mg/l and nitrate: 0,030–0,068 mg/l. Chlorophyl-a was higher in the surface than of secchi area. The result showed that Pinang Luar Lake water is mesotrofic and be support the aquatic organism.Key words : Chlorophyl-a, the vertical profiles, Pinang Luar Oxbow
The Vertical Profile of Nitrate in the Lacustrine and Transition Zone Koto Panjang Reservoir Kampar District Riau Province Sihotang, Simon Duce; H, Asmika; Sihotang, Clemens
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 research was carried out in the lacustrine and transition zone of Koto Panjang Reservoir from October - December 2013. Objective of the present research was to find out the vertical profile of nitrate in this reservoir. The research used survey method, samples were taken horizontally in four stations and vertically in five sampling points. The parameters of water quality measured were nitrate, dissolved oxygen (DO), pH, transparancy, temperature and depth. In the lacustrine zone concentration of nitrate in the surface was 0,148 – 0,166 mg/l, in the 2 Secchi depth was 0,16 – 0,168 mg/l, in the 4 Secchi depth was 0,153 – 0,162 mg/l, in the 12 m depth was 0,158 – 0,166 mg/l and in the bottom was 0,17 – 0,192 mg/l. In the transition zone concentration of nitrate in the surface was 0,1525 – 0,155 mg/l, in the 2 Secchi depth was 0,157 – 0,158 mg/l, in the 4 Secchi depth was 0,158 – 0,175mg/l, and in the bottom was 0,176 – 0,185mg/l. The concentration of dissolved oxygen (DO) was in the range of 0,10 – 8,75 mg/l. The value of pH was in the range of 5,4 – 5,9. Transparancy was in the range of 83,8 – 105 cm. Temperature was in the range of 28 – 32,3 oC. Depth was in the range of 9,3 – 22,7 m. The vertical profile of nitrate in the lacustrine and transition zone Koto Panjang reservoir of the present reseach revealed that nitrate concentration in the transition zone was relatively lower than that of lacustrine in the surface layer of the water, but the pattern of vertical nitrate profile in each zone was similar in which it increased with increasing depth. The parameters of water quality were observed still sustained the aquatic organism life.Keywords: nitrate, the vertical profile, PLTA Koto Panjang Reservoir
The Vertical Profiles of Phytoplankton in Danau Pinang Luar Buluh CinaVillage, Siak Hulu Sub- District, District Kampar, Riau Province Sihombing, Sudirman; Siagian, Madju; Sihotang, Clemens
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 on the Danau Pinang Luar Buluh Cina Village Siak HuluSubdistrict District Kampar Riau Province in April - Mei 2013 and aims to understand thephytoplankton vertical rofil in the Pinang Luar Lake. There were 3 stations, station 1 isincomingwater area, Station 2 is agencies lake area. Station 3 is end of the lake area. Samplings wereconducted 3 times, once/week.This research aims to determine the vertical profile ofphytoplankton of Danau Pinang Luar.The results showed 24 species of phytoplankton were classified into four classes, namely:Chlorophyceae (11 species), Cyanophyceae (7 species),Bacillariophyceae (5 species), Euglenophyceae (1 species). Average phytoplankton abundancearound 61578 - 495112 cells/l, species diversity index (H ) of phytoplankton around 4,21 - 4,51,uniformity index around 0,87 - 0,93 and dominance index (C) of about 0,046- 0,063. While thewater quality parameters such as temperature of 31°C, the brightness around 65 - 70 cm, a depth ofapproximately 261,7 - 461.7 cm, pH 6, Dissolved Oxygen approximately 2,93 – 6,4 mg/l, free ofcarbon dioxide around 3,96 – 11,88 mg/l, Nitrate around 0,01-0,02 mg/l, Phosphate approximately0,023 mg/l. Based on the abundance of phytoplankton, concluded that Danau Pinang Luar Outerrelatively moderate fertility levels.Keyword : Phytoplankton, Buluh Cina Village, Danau Pinang Luar
Phosphate Concentration from the Water around the Floating Cage Fish Culture Area and from the Area with No Cage, in the DAM Site of the Koto Panjang Reservoir Navis, Ali Akbar; Simarmata, Asmika H.; Sihotang, Clemens
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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In floating cage fish culture activities, degradation of feed remain and fish feces willincrease the Phosphate content in the surrounding area. A research aims to understand thePhosphate concentration in the water from the cage area and from the area that has no cage hasbeen done from July - November 2014. There were 3 stations, namely 200 m upstream nof thecage area (S1), in the cage area (S2) and 200 m downstream of the cage area (S3). Samplingswere conducted in the DAM site 4 times, once/2 weeks. In each station, water samples werecollected from 3 different depth, surface; 2 secchi and 4 secchi depths. Parameters measuredwere pH, Phosphate concentration, Dissolved Oxygen, transparancy, temperature and depth.Results shown that the concentration of Phosphate in the S1was 0.03 mg/L – 0.13 mg/L; in theS2 was 0.13 mg/L – 0.35 mg/L; and in the S3 was 0.07 mg/L – 0.22 mg/L. The highestconcentration of the Phosphate was in S2, while the lowest was in the upstream (S1). Phosphateconcentration indicates that the DAM site area of the Koto Panjang can be classified aseutrophic, especially in the area around the cage. Other water quality parameter measured weretemperature: 30.6oC – 31oC; transparancy 1.98 m – 2.55 m; depth 27 m – 40 m; pH 5 and freeCO2: 4.66 mg/L- 15.31 mg/L. the values of water quality parameters indicate that the waterquality in the DAM site of the Koto Panjang is good and might be able to support the life ofaquatic organisms in thet area.Keywords: phosphate, cage fish culture,Koto Panjang Dam
Types and Abundance of Periphyton in The Ceramic Substrate Placed in The Salo River, Salo District, Kampar Regency Siregar, Juliana Ivana; Sihotang, Clemens; Simarmata, Asmika Harnalin
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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Periphyton is a sessile microscopic organism attach on certain substrate. Research aims to determine the type and abundance of periphyton on ceramic substrate has been carried out in April-May 2015 in the Salo River. There are 3 stations (S1, S2 and S3) for placing the ceramic substrate and for taking water samples. Samplings are conducted once/week for a 4 weeks period. The periphyton samples are brushed from the surface of ceramic substrate (8 cm x 3 cm). The number of ceramic sampled in each station is 10, 6 and 3 pieces in S1, S2 and S3 respectively. Results shown that there are 54 types of periphyton present and they are belonged to 5 classes, namely Bacillariophyceae (36 species), Cyanophyceae (8 species), Chlorophyceae (6 species), Dynophyceae (1 spesies), and Xanthophyceae (3 species). The abundance of periphyton in the ceramic substrate placed in the S1, S2 and S3 is significantly different, there were 9,169 cell/cm2 ; 22,002 cell/cm2 and 67,913 cell/cm2 respectively.Keywords : Salo River, periphyton, ceramic substrate, type and abundance
Water Condition of Salo River Based on Physical-Chemical Parameters Sinaga, Rini; Sihotang, Clemens; Simarmata, Asmika Harnalin
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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Salo River is one of the Kampar River’s tributaries. Several activities conducted along the river produced pollutant that affects the water quality of the river in general. A research aims to understand the water condition in the Salo River based on physical-chemical parameters was conducted from April to May 2015. There were three stations (St1, St2 and St3) and water samples were taken once/week for a 4 weeks period. Water quality parameters measured were current speed, depths, temperature, transparency, turbidity, pH, DO , CO2, BOD5, nitrate and phosphate content. Results shown that the current speed was 17.5-38 cm/second, depths 29-36.3 cm, temperature 28-28.5 ºC, turbidity 3.34-5.36 FTU, pH 5, DO 6.89- 8.23 mg/L, CO2 7.99-8.99 mg/L, BOD5 2.39-7.29 mg/L, nitrate : 0.0275-0.0555 mg/L, and phosphate 0.0375-0.0525 mg/L. Nitrate and phosphate concentration indicate that the Salo River is in oligotrophic condition.Keywords : Salo River, Water Quality, oligotrophic