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Asmika Harnalin Simarmata
Dosen Pengajar Jurusan Manajemen Sumberdaya Perairan Fakultas Perikanan Dan Ilmu Kelautan Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Social Sciences

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Water quality of Boko-boko peat swamp based on physical-chemical parameters Langgam Village, Pelalawan Regency, Riau Province Putra, Dasti Janarko; Siagian, Madju; Simarmata, Asmika Harnalin
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 area around the Boko-Boko peat swamp has been used for palm plantation. Remains of fertilizer and pestiside used in the plantation may enter the water and decrease the water quality of the swamp. To understand the water quality of the Boko-Boko peat swamp’s waters, a research was conducted in March 2016. There were three sampling stations namely Station 1, Station 2, and Station 3 and in each station there were three sampling points, in the surface, 1.5 secchi and in the bottom. Samplings were conducted 3 times, once/week. Water quality parameters measured were depths, temperature, transparency, pH, DO, CO2, nitrate and phosphate. Results shown that depths was 70-250 cm, temperature: 30-31 oC, pH : 4-5, DO :0.35-3.28 mg/L, CO2: 4-21,97 mg/L, nitrate : 0.14-1.24 mg/L, and phosphate 0.01-0.17 mg/L. Nitrate concentration indicate that the Boko-Boko peat swamp was categorized as eutrophic, and phosphate concentration indicate that the Boko-Boko peat swamp is eutrophic.Keywords : peat swamp , Boko-Boko peat swamp, Water Quality, eutrophic.
Water Condition of Tajwid Lake in the Langgam District, Pelalawan Regency, Riau Province Prakoso, Dodo; Dahril, Tengku; Simarmata, Asmika. H.
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

Tajwid Lake is an oxbow lakes that located in the Langgam District, Pelalawan Regency,Riau Province. The potency of the Tajwid Lake is currently under reviewed by the governmentof Pelalawan as it will be developed into a tourist destination. Water quality in the lake Tajwidmight be changed as a result of human activities conducted around the lake. A study aims toprovide basic information on water quality and determine the trophic status of the lake wasconducted in February 2016. There are three stations (Station 1, Station 2 and Station 3) and thewater was sampled from three depths, surface, middle and the bottom of the lake. The samplingswere conducted 3 times, once / week. The water quality parameters measured were depth,transparency, temperature, pH, free CO2-, DO, Nitrate and Phosphate concentration. Resultsshown that the depth of the lake was ranged from 6.3 to 12.3 m, transparency 51.3- 69 cm,temperature 27.7-30.3 °C, pH 5, dissolved oxygen 2.3-8.3 mg / L. Free carbon dioxide ranged4.9-13.9 mg / L, nitrate 0.02- 0.11 mg / L, phosphate from 0.02 to 0.1 mg /L. The Nitrate andphosphate concentrations indicate that the condition of the Tajwid Lake is between oligotrophicto mesotrophic.Keywords : Tajwid Lake, Oxbow Lake, Water Quality, Trophic Status
Concentration of BOD5 in the Lacustrine and Transition Zones Koto Panjang Reservoir, Kampar District, Riau Province. Silaen, William Fransisco; Siagian, Madju; Simarmata, Asmika H
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

In the Koto Panjang Reservoir, the floating net caged fish culture produced organic meterials that negatively affects the water quality. A study aims to understand the concentration of BOD5 in the lacustrine and transition zones has been conducted from March to April 2016. There were 4 sampling sites, in the lacustrine 1 (L1), lacustrine 2 (L2), transition 1 (T1) and transition (T2). The vertical sampling points were decided based on transparency of the waters (at the surface, 3m, 6m, 12m, and in the bottom). The number of vertical sampling sites was depended on the depth of the water. 2 Secchi depth, 4 Secchi depth, 6 Secchi depth and in the bottom of the water. Water quality parameters measured were dissolved oxygen, free carbondioxide, nitrate, pH, phospate, temperature, and transparency. Results shown that BOD5 concentration in the lakustrine zone was 2.92 – 9.34 mg/L and in transition zone was 2.13 – 7.81 mg/L. Two way anova analysis shown that there was no difference in BOD5 concentration between zones. The floating net cage activity influences the BOD5 concentration in the Koto Panjang Reservoir.Keywords: Koto Panjang reservoir, BOD, lacustrine, transition
Carrying Capacity Assessment Based on Chlorophyll-ain the Tajwid Lake, Langgam Sub-District, Pelalawan District, Riau Province for Extensive Fishing Fadilah, Nisa Wangi Tresna; Simarmata, Asmika H.; Siagian, Madju
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

ABSTRACT Carrying capacity is defined as the ability of aquatic environment to support the life organism in that area. A study aimed to assess the aquatic carrying capacity based on chlorophyll-a for extensive fishing was conducted in the Tajwid Lake. The carrying capacity was determined based on primary productivity (chlorophyll-a content), which is indicating the existence of phytoplankton in the water. This research was conducted in March-April 2018 in the Tajwid Lake. There were 3 stations, namely Station 1 (inlet area), Station 2 (in the middle of lake) and Station 3 (outlet area).  Water quality parameters measured were temperature, transparency, pH, dissolved oxygen, CO2, nitrate, phosphate, and chlorophyll-a concentration. The concentration of chlorophyll-a indicates that the carrying capacity of the Tajwid lake for extensive fishing was 6.925 tons/year. Water quality parameters were as follows: transparency 47.0-54.7 cm, temperature 29.3-30.7oC, pH 5, dissolved oxygen  4.75-6.29 mg/L, CO2 17.32-22.64 mg/L, nitrate 0.0541-0.0820 mg/L, phosphate 0.1327-0.2798 mg/L, and concentration of chlorophyll-a  was 7.96 µg/L. 
Carrying Capacity Assessment Based on Chlorophyll-ain the Tajwid Lake, Langgam Sub-District, Pelalawan District, Riau Province for Extensive Fishing Fadilah, Nisa Wangi Tresna; Simarmata, Asmika H.; Siagian, Madju
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract

ABSTRACT Carrying capacity is defined as the ability of aquatic environment to support the life organism in that area. A study aimed to assess the aquatic carrying capacity based on chlorophyll-a for extensive fishing was conducted in the Tajwid Lake. The carrying capacity was determined based on primary productivity (chlorophyll-a content), which is indicating the existence of phytoplankton in the water. This research was conducted in March-April 2018 in the Tajwid Lake. There were 3 stations, namely Station 1 (inlet area), Station 2 (in the middle of lake) and Station 3 (outlet area).  Water quality parameters measured were temperature, transparency, pH, dissolved oxygen, CO2, nitrate, phosphate, and chlorophyll-a concentration. The concentration of chlorophyll-a indicates that the carrying capacity of the Tajwid lake for extensive fishing was 6.925 tons/year. Water quality parameters were as follows: transparency 47.0-54.7 cm, temperature 29.3-30.7oC, pH 5, dissolved oxygen  4.75-6.29 mg/L, CO2 17.32-22.64 mg/L, nitrate 0.0541-0.0820 mg/L, phosphate 0.1327-0.2798 mg/L, and concentration of chlorophyll-a  was 7.96 µg/L. 
Trophic Status of the Dam Site of Koto Panjang Reservoir, Kampar district, Riau Province based on Nygaard Index Nugroho, Rio Cahyo; Dahril, Tengku; Simarmata, Asmika H.
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract Nygaard Index can be used to determined trophic state of waters. Calculation of this index is based on the number of phytoplankton species such as Chlrococcales, Centric diatom, Myxophyceae, Euglenaphyceae and Desmidiaceae. To understand the trophic state of the PLTA Koto Panjang reservoir waters, a research has been conducted in March - April 2018. There were three sampling stations, namely station 1 (an area with 100-150 floating cages), station 2 (an area with 200-300 floating cages) and station 3 (an area with 946 floating cages). In each station there were three sampling points, in the surface, 3.5 m depth, and 7 m depth. Sampling were conducted 3 times, once/week. Water quality parameter measured were phytoplankton, transparency, temperature, pH, nitrate, phosphate, Dissolved Oxygen and free carbon dioxide. Results shown that there were 82 species of phytoplankton present, namely Myxophyceae (19 species), Chlorococcales (28 species), Centric Diatom (15 species), Euglenaphyceae (1 species) and Desmidiaceae (19 species). The water quality parameters were as follows: transparency 108-138 cm, temperature 31-320C, Dissolved Oxygen 1.8-6.0 mg/L, free carbondioxide 13.8-29.5 mg/L, nitrate 0.07-0.131 mg/L, phosphate 0.15-0.36 mg/L. Nygaard Index value of the waters was 3.1-3.7, and it can be categorized as eutrophic.  Keywords : Koto Panjang Dam, Water quality, Phytoplankton, Eutrophic
Chlorophyll-ɑ Concentration of Periphyton attached in the plastic substrate placed in the Sail River, Pekanbaru City, Riau Province Putra, Aldo Pratama; Dahril, Tengku; Simarmata, Asmika Harnalin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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ABSTRACTPeriphyton is one of microorganisms that serve as primary producer in the aquatic environment. Research aims to determine the chlorophyll-ɑ concentration of periphyton attached in plastic substrate has been carried out in April-May 2018 in the Sail River. There were three sampling stations, namely S1 (in the upstream), S2 (in the middle) and S3 (in the downstream). Samplings were conducted once/week for a 3 weeks period. The periphyton samples were brushed from the plastic substrates (8 x 6) cm2. Water quality parameters measured were water current, temperature, transparency, pH, dissolved oxygen, free carbon dioxide, nitrate, and phosphate. Results shown that chlorophyll-ɑ concentration of peripyhton in the plastic substrate in the S1 was 11.29 μg/cm², in S2 was 14.52 μg/cm²and in S3 there was 26.21 μg/cm². The water quality parameters were as follows: water current 0.07-0.69 m/s, transparency 6.03-7.67 cm, temperature 29-30 0C, dissolved oxygen 4.8-5.7 mg/L, free carbon dioxide 13.6-14.6 mg/L, nitrate 0.29-0.38 mg/L, phosphate 0.34-0.54 mg/L. The chlorophyll-ɑ concentration indicate that the trophic status of the Sail River was eutrophic. The water quality is good and it may be able to support the life of aquatic organisms. Keywords: Lotic, sessile organism, trophic state, water quality
Types and Abundance of Phytoplankton in The Sepinang Lake, Siak Hulu Sub-District, Kampar District, Riau Province Yunita, Sarah Amelia; Siagian, Madju; Simarmata, Asmika Harnalin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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ABSTRACTThere were several human activities around the Sepinang Lake such as agriculture and palm plantation contributes the input of organic and anorganic matter that influence the type and abundance of phytoplankton. To understand the types and abundances of phytoplankton present in the Sepinang Lake, a researchhas been conducted in March-April 2018. There were three sampling points, namely in the inlet, in the middle of the lake, and in the end of the lake. In each sampling point,water was sampled from the surface and 2 Secchi depth. Samplings were conducted 3 times, once/week.Water quality parameters measured were temperature, transparency, depth, dissolved oxygen, CO2, nitrate, phosphate and pH.Results shown that there were 47 species of phytoplankton that were belonged to 5 divisions, namely Chrysophyta (10 species), Chlorophyta (25 species), Cyanophyta (8 species), Euglenophyta (3 species) and Cryptophyta (1 species). The phytoplankton abundance of the Sepinang Lake was 106,490 – 150,650 cells/L. The most common type of phytoplankton present wasMonoraphodium griffithii.Result shown that the temperature was 30.6-320C, transparency was 49.3-62.8 cm, depth was 211-223.6 cm, dissolved oxygen was 4.22-5.58 mg/L, CO2 was 11.32-13.32 mg/L, nitrate was 0.07-0.23 mg/L, phosphate was 0.09-0.23 mg/L and pH was 5.3-5.6. Based on the type and abundance of phytoplankton present, it can be concluded that the Sepinang Lake can be categorized as mesotrophic. Keywords: Kampar River, Oxbow Lake, Mesotrophic, Monoraphodium
Limnological Condition of the Pekak Lake,based on physical-chemical parameters Buluh Nipis Village, Kampar District, Riau Province Br. Allagan, Desima Kristina; Siagian, Madju; H. Simarmata, Asmika
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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AbstractPekak Lake is one of oxbow lakes located in the Buluh Nipis Village. A research aims to understand the limnological condition of the Pekak Lake based on physical – chemical parameters has been conducted in March-April 2018. There were three sampling stations namely Station 1 (inlet), Station 2 (in the middle of the lake), and Station 3 (outlet). In each station there were two sampling points, in the surface (0 cm) and 1 Secchi depth (75 cm). Samplings were done once/week for 3 weeks period. Water quality parameters measured were temperature, transparency, depth, pH, DO, CO2 free, nitrate and phosphate concentration. Result shown that the temperature 28.6-300C, transparency 68.5– 76.83 cm, depth 1.45 – 2.70 m, pH 5 , DO 5.13-6.4 mg/L, CO2 free 8.23-15.48 mg/L, nitrate 0.05 – 0.19 mg/L and phosphate 0.06 – 0.11 mg/L.  Based on the nitrate and phosphate concentrations, Pekak Lake can be categorized oligotrophic- mesotrophic. Keyword : Oxbow Lake, Water Quality, Oligotrophic, Mesotrophic
Type and Density of Zooplankton in The Pekak Lake Buluh Nipis Village, Siak Hulu Sub District, Kampar District, Riau Province S Sinaga, Jefri Daniel; Siagian, Madju; Simarmata, Asmika Harnalin
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract The existence of human activities around the Pekak Lake producing organic  and anorganic materials that enter the water and affects the type and density of zooplankton in general. To understand the types and density of zooplankton in the Pekak Lake, a research has been carried out in March-April 2018. There were three sampling points, namely in the inlet, in the middle of the lake, and in the end of the lake. In each sampling point, the water was sampled from the surface and 0.75 m depth. Water quality parameters measured were temperature, transparency, dissolved oxygen, pH, nitrate and phosphate. Sampling were conducted 3 times, once/week. Results shown that there were 15 species of zooplankton present and they were belonged to 12 classes, namely Ciliata (3 species), Crustacea (2 species), Copepoda (1 species), Sagittoidae  (1 species), Insecta (1 species), Cladocera (1 species), Adenophorea (1 species), Suctoria (1 species), Monogononta (1 species), Sarcodina (1 species), Seisonidae (1 species), Rotifera (1 species). The zooplankton density in the Pekak Lake was 2.466-5.277 organisms/L. The most common zooplankton in Pekak Lake is Ciliate. Water quality parameter values are as follow, temperature was 27-30 0C, transparency was 68.5-76.8 cm, dissolved oxygen was 5.13-6.4 mg/L, pH  5.0, CO2 was 8.23-15,58mg/L, nitrate was 0.05-0.19 mg/L and phosphate was 0.06-0.11 mg/L. Based on the density of zooplankton, the Pekak Lake can be categorized was oligotrophic.Keywords : Kampar River, Oxbow Lake, Eutrophic, Ciliate.
Co-Authors ', Edduardo Abdi Doly Tarigan Adithia Netanyahu Purba Agung Prabowo Agustri Minggu Samosir Minggu Samosir Ali Akbar Navis Amat M. Siregar Amat Marustar Siregar Andri Hendrizal Arico Candra Tambunan Astria, Katarina Gita Ayunanda Mustika Sari Azmudin ' Bennawaty Bennawaty Berton Panjaitan Beta Posmarito Pardede Bibiana W. Lay Br Sitorus, Chrisna Heni Nozelina Br. Allagan, Desima Kristina Buala Ziduhu Laia Budijono, Budijono Christin M. Saragih Cindy Fantika Sari Clara Novicasari Br Surbakti Clemen Sihotang Clemens Sihotang Cristy Artha D Sinurat D Kusumawati, Yuliana Dameyana S.C Lumban Tobing Darwinda Darwinda Dasti Janarko Putra, Dasti Janarko Defi Fitriya Dalimunthe Deni Efizon Desi, Ria Irawan Dewi, Afrila Diah Sari Ninggrum Dimas Dwi Nugroho Santoso Dio M Silalahi Dumaria, Roma Efredy Tamba Eka Dwinata Nopitasari Eko Purwanto Eko Simatupang Ella Dabella Manja Enan M. Adiwilaga Erwin David Sianipar Esmi Yanti br Sinaga Fadilah, Nisa Wangi Tresna Fahrezzy, Reggi Farida Sri Indah Ginting, Dinda Julianti Gultom, Zogi Tri Harjoyudanto, Yudho Hendra Saputra Henni Syawal Hidayati Hasibuan Hidayatunnisah, Putry Hikma, Murbeni Hosianna Sitorus Indra R. Simangunsong, Indra R. Irfan Anggriawan Irwan Nababan Isma Mulyani Jerima, Raihan Jiboro, Mega Rani Joko Samiaji Juliana Ivana Siregar Julianti ' July Prenky Purba Krismanto Viade Nababan Libra Trio Situmorang, Libra Trio Lubis, Helfrida M Silalahi, Dio M. Arifan Fadhilla M Madju Siagian Madju Siagian Madju Siagian Madju Siagian Madju Siagian2 Magdalena Fitriani Daeli Maju Siagian Mandasari, Ayu Defi Manurung, Dostiarni Minsa Karolina Maria Virgita Sihaloho, Maria Virgita Merlin Evan Olivia Hutauruk Miranda Wahyuni Raja Gukguk Muhammad Edom Rifai Muhammad Fauzi Muhammad Zaki Mulyani, Isma Munthe, Ayaki Tomala Nadia Putri Julita Nadira, Ismi Nainggolan, Dorma Abigail Natasya Margareth Pasaribu Nia Anggraini Nugroho, Rio Cahyo Nuraini El Fajri Nurrina, Haura Olivia, Reyka Kristin Petrus Juandatua Sirait, Petrus Juandatua Prakoso, Dodo Prian Mintaito Simangunsong Putra, Aldo Pratama Radieka Febyando, Radieka Rahmi Hidayana Hasibuan Raihan Jerima Rancelia Kristina Simanjuntak Rati Muspa Rekha Mutiara Manurung Renny Sibuea Ricki Meno P Sinurat Ricky Christoper P. S Rina D’rita Sibagariang Rina Maria Rini Sinaga Rodo Sinatra Nababan, Rodo Sinatra Roma Dumaria S Sinaga, Jefri Daniel Santo Rio Pakpahan Santoso, Dimas Dwi Nugroho Santun Tua Siburian Satria Yunda Sembiring, Rinawati Septriza Radella Shinta Permata Sari Siahaan, Oloan Sibagariang, Rina D'rita Sibagariang, Rina D’rita Sibuea, Renny Sihombing, Djob Fernadi Sihombing, Evi Stevani Sihombing, Susi Silaen, William Fransisco Simangunsong, Perdinan Simanjuntak, Taruli Septiana Sistim Wehalo Sitohang, Dohar Sitorus, Rike Yance Sofyan Husein Siregar Sovianti, Yona Syada Nopriadi Akbar Tamba, Niger Efafras Tengku Dahril, Tengku Theresia Tifany Saragih Tiara Priskila Tri Prartono Tri Wahyudi Triani, Mike Tuti Maisarah Br. Siregar Valentina Manurung Walmon Sinaga Windarti Windarti Windarti Windarti Yeni Handayani Yona Sovianti Yudho Harjoyudanto Yudi Asriansyah Yuli Suciati Yuni Piratih, Yuni Yunita, Sarah Amelia Yuris Fiestaria Naibaho Yusmidar Yusmidar Zaini Hafiz Zein Lubis, Solat Adawiyah