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All Journal Berkala Perikanan Terubuk Jurnal Ilmu Perairan (Aquatic Science) Jurnal Online Mahasiswa (JOM) Bidang Pertanian Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Unri Conference Series: Community Engagement Indonesian Journal of Multidisciplinary Science South East Asian Water Resources Managements
Tengku Dahril, Tengku
Jurusan Manajemen Sumberdaya Perairan, Fakultas Perikanan Dan Kelautan, Universitas Riau
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Carrying Capacity Assessment of Tanjung Putus Lake for Extensive Fishing Based on Chlorophyll-a Buala Ziduhu Laia; Asmika Harnalin Simarmata; Tengku Dahril
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 The carrying capacity is defined as the ability of aquatic environment to support the life of organism in that area. A study aimed to assess the aquatic carrying capacity for extensive fishing in the Tanjung Putus Lake, Buluh China Village, Kampar District, Riau. The carrying capacity was determined based on primary productivity using chlorophyll-a value, which is indicating the existence of phosphate in waters.This research was conducted March, 2018.There were 3 stations namely station 1 (inlet area), station 2 (in the middle of lake) and station 3 (outlet area). In each stations, there were 2 sampling sites, in the surface and in the middle of water column. Sampling was done three times, once a week. Water quality parameters measured weretransparency, temperature, pH, dissolved oxygen, phosphate and nitrate concentration. Results shown that chlorophyll-a: 6.98-7.52 µg/L, transparency: 85.17-96.5 cm, temperature: 30.2-31.8 oC, pH: 5, dissolved oxygen: 4.82-         6 mg/L, phosphate: 0.05-0.09 mg/L and nitrate: 0.05-0.06 mg/L. The concentration of chlorophyll-a indicates that the carrying capacity of the Tanjung Putus Lake for extensive fishing was 1,74 tons/year. Keyword: Oxbow lake, Extensive fishing, Phytoplankton, Water quality
Types and Abundance of Phytoplankton in The Maninjau Lake, Tanjung Raya Sub–District, Agam District, Sumatera Barat Province Meria Ulfa; Madju Siagian; Tengku Dahril
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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AbstractManinjau Lake is a volcanic lake that is used for various human activities such as drink water sources, tourisms, transportation and aquaculture. Many activities contributes the input of organic and anorganic matters that affect water quality and the trophic state of the water in general. A research aims to understand the types and abundance of phytoplankton and the trophic state of the Maninjau Lake waters based on the Nygaard Index was conducted in January – March 2017. There were 4 stations namely  Station 1 (bay area), Station 2 (inlet area), Station 3 (fish floating cages area) and Station 4 (outlet area). In each station, the water were sampled from 3 different depths, in the surface (0.5 m), 2 Secchi depth (1.2 m) and 4 Secchi depth (2.4 m). Samplings were conducted once/2 weeks for 1.5 month period. Results shown that there were 68 phytoplankton species that were belonged to six families, namely Bacillariophyceae (20 species), Chlorophyceae (29 species), Cyanophyceae (13 species), Euglenophyceae (2 species), Dinophyceae (1 species) and Chrysophyceae (3 species).The average of phytoplankton abundance was around 12,517 – 21,565 cells/L and the Nygaard Index value was 2.4 – 3.4. The water quality parameters were as follows: temperature 26.8 – 28.4 0C, transparency 53.67 – 72 cm, depth 16.9 – 47.5 m, pH 6 – 8, free CO27.3 – 32.7 mg/L, DO 0.24 – 8.09 mg/L, nitrate 0.02 – 0.39 mg/L and phosphate0.068 – 0.161 mg/L.Based on the abundance of phytoplankton and the Nygaard Index value, the Maninjau Lake can be categorized as mesotrophic to eutrophic. Keywords:Phytoplankton, Maninjau Lake, Indeks Nygaard, Water Quality
Primary productivity Based on Oxygen Method in the Betung Lake Betung Village Pangkalan Kuras Sub-District Pelalawan District Riau Province Septriza Radella; Asmika Harnalin Simarmata; Tengku Dahril
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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AbstractPrimary productivity is the conversion of solar energy and nutrients to living biomass through photosynthesis. A research aimed to understand the primary productivity based on oxygen method was conducted in July-August 2019. There were three sampling stations namely Station 1 (inlet area), Station 2 (in the middle of the lake) and Station 3 (in the end of the lake). In each stations, there were 2 sampling point, in the surface (15 cm) and 2 Secchi (160 cm) depth. Sampling was done three times, once/week. Water quality parameters measured were temperature, pH, transparency, depth, dissolved oxygen, CO2, nitrate and phosphate concentration. Results shown that the temperature was 28.7-29 ºC, transparency was 81.3-84 cm, pH was 5, depth was 195-210 cm, DO was 3.87-6.12 mg/L, CO2 was 6.27-15.42 mg/L, nitrate was 0.0229-0.0405 mg/L, and phosphate was 0.0226-0.0406 mg/L. Primary productivity based on oxygen method in the Betung Lake was 158-349 gC/m3/Day and it can be categorized mesotrophic.  Keywords : Oxbow Lake, Photosynthesis, Water Quality, Nilo River,Transparency
Comparative Study of Primary Productivity Based on Oxygen Method in The Tanjung Kudu Lake and Parit Lake Kampar Regency, Riau Province Clara Novicasari Br Surbakti; Tengku Dahril; Asmika Harnalin Simarmata
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 8, No 2 (2021): Edisi 2 Juli s/d Desember 2021
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ABSTRACTPrimary productivity is the conversion of solar energy and nutrients to living biomass through photosynthesis. A research aimed to understand the comparisons of community activities to primary productivity in Tanjung Kudu Lake and Parit Lake. This research was conducted in December 2020.There were three sampling stations namely inlet area, in the middle of the lake and in the end of the lake.In each stations, there were 2 sampling point, in the surface and 2 Secchi depth. Sampling was done three times, once per week.Primary productivity based on oxygen method in the Tanjung Kudu Lake was 344,44-509,72 gC/m3/day and in the Parit Lake was 366,66-539,58 gC/m3/day. Water quality parameter such as transparency46-67cm, temperature 29-30oC, pH 5-6, dissolved oxygen 2,9-5,3 mg/L, CO27,99-15,99mg/L, nitrate 0,0133-0,064mg/L and phosphate 0,0130-0,064mg/L while in Lake Parit the transparency was 47,5-67,5 cm, temperature 29-30oC, pH 5-6, dissolved oxygen 3,3-5,2 mg/L, CO27,99-15,99 mg/L, nitrate 0,022-0,054 mg/L and phosphate 0,024-0,050 mg/L.Based on two way anova statistical test of primary productivity was not significantly different between stations and over time. Based on the abundance of primary productivity, Tanjung KuduLake and ParitLake can be categorized as mesotrophic. Keywords:Primary productivity, Water Quality, Tanjung Kudu Lakes, Danau Parit Lakes,Mesotrophic
The Dynamics of Phytoplankton Abundance in the PLTA Koto Panjang Reservoir inBatu Bersurat Village, XIII Koto KamparDistricts, Kampar Regency, Riau Province Ester Romastika Turnip; Tengku Dahril; Madju Siagian
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACTPhytoplankton will respond to the nutrient material that is input into the Koto Panjang Reservoir in Batu Bersurat. The dynamics of phytoplankton abundance will occur depending on nutrients and light intensity based on time and depth. This study aims to look at the dynamics of phytoplankton abundance based on time and depth. This research was conducted in June-July 2019. The sampling locations were determined by 3 stations 4 times with a time interval of 1 week. At each station, there are 3 sampling points, namely on the surface, at 2 Secchi depth and at 4 Secchi depth. The parameters measured are temperature, brightness, depth, pH, DO, CO2, nitrate, and phosphate. Based on measurements at different depths, it was found that the abundance of phytoplankton was most surface and decreased at depths of 2 Secchi and 4 Secchi. Based on time, phytoplankton abundance is increasing every week. Water quality parameters recorded as follows, temperature 29-31 oC, transparency 153.5-161.25 cm, pH 5, DO 6.2-6.8 mg/L, CO2 7.3-9.3 mg/L, nitrate 0.056-0.082 mg/L and phosphate 0.59-0.96 mg/L.Keyword: The Dynamic of Phytoplankton, Water Quality Parameters, Reservoir Puddles
Phytoplankton Based Trophical State of the Tuok Tonga Lake in the Buluh Cina Village, Kampar District, Riau Province Mujahidah Ulya; Madju Siagian; Tengku Dahril
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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                   AbstractTypes and abundanceof phytoplankton can be used to determined the trophic state of water.To understand the types and abundances of phytoplankton present in the Tuok Tonga Lake, a research has been conducted in June-July 2019. 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, pH, nitrate and phosphate contents. Results shown that there were 43 species of phytoplankton that were belonged to 5 classes, namely Bacillariophyceae (10 species), Chlorophyceae (24 species), Cyanophyceae (4 species), Euglenophyceae (4 species) and Cryptophyceae (1 species). The phytoplankton abundance in the Tuok Tonga Lake was 59,462-129,908 cells/L. The most common type of phytoplankton present was Monoraphodium sp. Results shown that the temperature was 29.7-31.7oC, transparency was 61.7-62.7 cm, depth was 125-284 cm, pH was 5, dissolved oxygen was 3.4-5 mg/L, CO2 was 5.3-14.7 mg/L, nitrate was 0.02-0.08 mg/L, phosphate was 0.03-0.15 mg/L and pH was 5. Based on the type and abundance of phytoplankton present, it can be concluded that the Tuok Tonga Lake can be categorized as mesotrophic. Keywords: Kampar River, Oxbow Lake, Mesotrophic, Phytoplankton abundance
Carrying Capacity Assessment Based on Chlorophyll-a in the Putus Lake, Siak Hulu Sub-District, Kampar District Riau Province Ella Dabella Manja; Tengku Dahril; Asmika Harnalin Simarmata
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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ABSTRACTThe carrying capacity is defined as the ability of aquatic environment to support the life of organisms in that area. A study aimed to assess the aquatic carrying capacity for extensive fishing in the Putus Lake, Pangkalan Baru Village, Kampar District, Riau. The carrying capacity was determined based on primary productivity using chlorophyll-a concentration, which is indicating the existence of phytoplankton in waters.This research was conducted July, 2019. There were 3 stations namely station 1 (inlet area), station 2 (in the middle of lake) and station 3 (tip of lake). In each stations, there were 2 sampling sites, in the surface and in the middle of water column. Sampling was done four times, once week. Water quality parameters measured transparency, temperature, pH, dissolved oxygen, phosphate and nitrate concentration. Results shown that chlorophyll-a concentration: 10.87-13.19 µg/L, transparency: 66.6-74.2cm, temperature: 29-31 oC, pH: 5, dissolved oxygen: 3,72-5,32mg/L, phosphate: 0,03-0,05mg/L and nitrate: 0.02-0.04mg/L. The concentration of chlorophyll-a indicates that the carrying capacity of the Putus Lake for extensive fishing was 1.73 tons/year.Keyword: oxbow lake, extensive fishing, phytoplankton, water quality
Types and abundance of phytoplankton in the Samsam Peat Swamp, Kandis Sub-District, Siak District, Riau Province Zurkartika '; Madju Siagian; Tengku Dahril
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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Samsam swamp is located in the peat swamp area and flooded during rainy season. To understand the types and abundance of phytoplankton present in that swamp, a study has been conducted in March 2016. There were four sampling sites, namely S1 is in the upstream (almost no human activity); S2 ( around palm plantation); S3 (around the newly planted palm plantation) and S4 (far from palm plantation). Water sampler were taken once/week for 3 week period. Results shown that there are 21 species of phytoplankton present in the swamp. They were classified into three classes, `namely: Bacillariophyceae (12 species), Chloropyhceae (6 species) and Cyanophyceae (3 species). The average of phytoplankton abundance was around 2,804 – 4,135 cells/L. While the water quality parameters were as follows: temperature: 30 - 320C, transparency: 30 - 40 cm, depth: 83 - 114 cm, pH: 4 - 5, CO2: 8.66 - 9.32 mg/L, DO: 3.96 - 4.65mg/L, nitrate: 0.45 - 0.58 mg/L and phosphate: 0.36 - 0.56 mg/L. Based on the abundance of pyhtoplankton, it can be concluded that the Samsam peat swamp water can be categorized as oligotrophic.Keyword : Phytoplankton, Samsam Peat Swamp, Water Quality and Oligotrophic
Relationship between Total Phosphorus and Chloropyll-a in the PLTA Koto Panjang Reservoir in Batu Bersurat village, XIII Koto Kampar Districts, Kampar Regency, Riau Province Nitami S.M Sihombing; Tengku Dahril; Madju Siagian
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract Several activities in the PLTA Koto Panjang Reservoir in Batu Bersurat, have provided organic and inorganic inputs to the waters, with increased phosphate concentrations and have influenced phytoplankton growth and chlorophyll-a concentrations in the waters. This research  aims  to  understand the relationship between Total P and Chloropyll-a in the PLTA Koto Panjang Reservoir in Batu Bersurat village and it was conducted in June-July 2019. Sampling was determined at 3 locations namely Station I (KJA area), Station II (areas which are not much affected by activities) and Station III (Tourism and plantation areas). Each station has 3 sampling points namely surface, in 2 Secchi depthand in 4 Secchi depth. Sampling was carried out 4 times with a time interval of a week. Water quality parameters measured in this study are Total P, Chlorophyll-a, Nitrate, Transparency, Temperature, pH, Dissolved Oxygen and free carbon dioxide. The water quality parameter values were as follows: total phosphorus 0,205-0,247 mg/L, chlorophyll-a4,65-6,17 µg/L, dissolved oxygen 6,35-6,88 mg/L, free carbon dioxide 5-12,99 mg/L, temperature 29-31 oC, transparency 145,1-187,5 cm, pH 5-6,25 dan nitrate 0,06-0,08 mg/L. Relationship between total phosphorus with Chlorophyll-a retrieved value r of 0,7023-0,7643. Based on the correlation coefficient, the relationship of total phosphorus with Chlorophyll-a in PLTA Koto Panjang Reservoir in Batu Bersurat village in power (non linier) is strongly. Keywords: Total phosphorus; Chlorophyll-a, Reservoir Puddles, depth
Carrying Capacity of Tepian Batu Lake in Teratak Buluh Village Siak Hulu District Kampar Regency Riau Province Based on Total-P Theresia Tifany Saragih; Tengku Dahril; Asmika Harnalin Simarmata
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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AbstractCarrying capacity is defined as the ability of aquatic environment to support the life of organisms in that area. A research aims to determine the carrying capacity and the number of floating net cages which can be operated in Tepian Batu Lake based on total phosphorus concentrations. The research was conducted from June to July 2019. Sampling was determined at 3 locations, namely Station 1 (inlet area), Station 2 (KJA area) and Station 3 (outlet area). Each Station has                 2 sampling points, namely surface and in 2 Secchi depth. Sampling was carried out 3 times once/week. Water quality parameters measured were total phosphorus, depth, transparency, temperature, pH, dissolved oxygen and biochemical oxygen demand. The carrying capacity based on Total-P was analyzed by Beveridge formula (2004). The results showed that Total-P concentration 0.071-0.174 mg/L. Water quality parameters were as follows : depth 354-395.5 cm, transparency 57-63.3 cm, temperature 28.67-30.33oC, pH 5-5.67, DO 3.34-5.18 and BOD5 3.03-8.25 mg/L. The carrying capacity of Tepian Batu Lake was 1.1607 ton/year or the number of floating net cages 4 units. Based on carrying capacity of Tepian Batu Lake, it can be concluded the current number of floating net cages (FNC) has exceeded the reservoir’s carrying capacity. Keywords : Beveridge, Water quality, Biochemical oxygen demand, Dissolved                       oxygen, Floating net cages
Co-Authors Agfin Septian Yogi Pratama Agustri Minggu Samosir Minggu Samosir Annisa Amaliah Arico Candra Tambunan Asmika Harnalin Simarmata Aspi Mardhana Ayu Dwi Utami Bennawaty Bennawaty Beta Posmarito Pardede Br Sitorus, Chrisna Heni Nozelina Buala Ziduhu Laia Budijono, Budijono Bukit, Friska Lesmana Beru Christin M. Saragih Cindy Fantika Sari Clara Novicasari Br Surbakti Clarissa, Enny Clemens Sihotang Darwinda Darwinda Debora Utami Defi Fitriya Dalimunthe Deni Efizon Desi, Ria Irawan Dumaria, Roma Efawani Efawani Efawani Efawani Efredy Tamba Eko Prianto, Eko Eko Simatupang Ella Dabella Manja Esra Febryanti, Esra Ester Romastika Turnip Fadliyanti, Refo Fahrezzy, Reggi Fajar Restuhadi Fella Ferdiana Friska Junita Sirait Gaol, Melinda Juliana Lumban Gultom, Zogi Tri Harjoyudanto, Yudho Harmelita Harmelita Harmelita, Harmelita Hartini, Fitri Hidayatunnisah, Putry Hikma, Murbeni Intan S, Yeni Debora Irfan Anggriawan Jiboro, Mega Rani Lauri Sahat Parulian M M Sinaga, Saut M. Arifan Fadhilla M Madju Siagian Madju Siagian Manurung, Dostiarni Minsa Karolina Meria Ulfa Merlin Evan Olivia Hutauruk Miranda Wahyuni Raja Gukguk Muchlizar Muchlizar Muhammad Edom Rifai Muhammad Ichsan Mulyadi Mujahidah Ulya Munthe, Ayaki Tomala Mustika Firdaus Muzdalifah ' Nadira, Ismi Naziruddin Naziruddin Nengsi, Agustina Surya Nitami S.M Sihombing Nugroho, Rio Cahyo Prakoso, Dodo Putra, Aldo Pratama Rahfiani, Wulan Rekha Mutiara Manurung Renny Sibuea Ricki Meno P Sinurat Ridwan Manda Putra Rina D'rita Sibagariang Rina D’rita Sibagariang Rivco Hastwoyundra Roma Dumaria Rusmala Sari Septriza Radella Sibagariang, Rina Sibuea, Renny Sihombing, Djob Fernadi Sihombing, Evi Stevani Silfia Nurjijar Silvia Karmila Simangunsong, Perdinan Simatupang, Dewi Sitohang, Dohar Syada Nopriadi Akbar Tamba, Niger Efafras Theresia Tifany Saragih Tiara Priskila Tri Wahyudi Tuti Maisarah Br. Siregar Windarti Windarti Wulan Rahfiani Yohana Nelly Destina Siboro Yudho Harjoyudanto Yuli Suciati Yuliati Yuliati Yuni Rahayu Yuris Fiestaria Naibaho Zurkartika '