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Syahril Nedi
Universitas Riau
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Public Health Social Sciences Other

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Concentration Analysis of Pb and Cd in Water and Blood Shells (Anadara granosa) in Rupat Strait Water Sari, Lita; Nasution, Syafruddin; Nedi, Syahril
Journal of Coastal and Ocean Sciences Vol. 3 No. 1 (2022): January
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Water pollution occurs due to waste from various community activities that produce liquid, solid, and gas waste. One of the wastes produced is heavy metals that are harmful to organisms and humans. The research was conducted in December 2020-March 2021 in the Waters of Rupat Strait of Riau Province. This study aims to analyze the concentration of Pb and Cd metals in water and blood shells (Anadara granosa), know the relationship of Pb and Cd metal concentrations to morphometric blood shells (A. granosa), and know the relationship of Pb and Cd metal content in water and blood shells (A.granosa). The method used in the research is the survey method. The results showed that the concentration value of heavy metals in seawater in the Rupat Strait Waters (Cd 0.11mg/L), (Pb 0.86 mg/L). Concentrations of heavy metals in blood shells (A. granosa) in rupat strait waters ranged Cd (0.04 mg/kg), Pb (0.03-0.06 mg/kg). Based on these results, Pb and Cd metal in the sea pair in the strait has passed the quality standard set while the Metal Pb and Cd on blood shells are still below the quality standard which means it is still safe to be consumed.
Relationship of Nitrate and Phosphate Content with Phytoplankton Abundance at the West Kambang River Estuary, Lengayang District, Pesisir Selatan, West Sumatra Fatma, Nisa Tria; Nedi, Syahril; Nurrachmi, Irvina
Journal of Coastal and Ocean Sciences Vol. 3 No. 1 (2022): January
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was conducted in February 2021 in the Estuary of the West Kambang River, Lengayang District, Pesisir Selatan, West Sumatra. This study aims to analyze the relationship between nitrate and phosphate concentrations with the abundance of phytoplankton in the West Kambang River Estuary. The method used in this study is a survey method. Determination of sampling stations was carried out by purposive sampling based on anthropogenic activities around the Estuary of the West Kambang River. Based on the results of the study, nitrate concentrations ranged from 0,76 ̶ 0,86 mg/L, phosphate concentrations ranged from 0,85 ̶ 0,94 mg/L, the average abundance of phytoplankton ranged from 201,50 ̶ 284,27 ind/L. Based on the one way Anova test, the concentration of nitrate, phosphate and abundance of phytoplankton did not differ significantly between stations. The results of simple linear regression test showed that the concentration of nitrate had a weak relationship with the abundance of phytoplankton and phosphate had a moderate relationship with the abundance of phytoplankton.
The Relationship of Nitrate, Phosphate, and Silicate Concentrations to The Abundance of Planctonic Diatoms in Carocok Tarusan Waters, Pesisir Selatan District Yandra, Yoli; Nedi, Syahril; Elizal, Elizal
Journal of Coastal and Ocean Sciences Vol. 3 No. 1 (2022): January
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was carried out from December 2020 to January 2021 in Carocok Tarusan Waters, Pesisir Selatan Regency, West Sumatra, which aims to analyze the concentration of nitrate, phosphate and silicate, calculate the abundance of planktonic diatoms and analyze the relationship between the content of nitrate, phosphate and silicate to the abundance of planktonic diatoms present. in the waters of Carocok Tarusan, Pesisir Selatan Regency. The research method used in this study is a survey method while the determination of research stations is carried out by purposive sampling. The results showed that the average nitrate concentration was 0.7792– 0.8757 mg/L, the average phosphate concentration was 1.7220– 2.0833 mg/L and the silicate concentration was 0.6287 - 0.6835 mg/L. Planktonic diatoms found in Carocok Tarusan waters contained 13 species from 3 classes, namely Bacillariophyceae, Chaetoceraceae and Coscinodiscophyceae. The results of the calculation of the abundance of planktonic diatoms are 17.82 – 20.72 Ind/L. The test conducted to determine the relationship of nitrate, phosphate and silicate to the abundance of planktonic diatoms was a simple linear regression test. Based on the results of the linear regression test, it is known that the effect of nitrate concentration on the abundance of planktonic diatoms in Carocok Tarusan waters is 00.81%, while the remaining 99.19% is influenced by other factors, for the effect of phosphate concentration on the abundance of planktonic diatoms in Carocok waters. Tarusan is 8.81%, while the remaining 91.19% is influenced by other factors and for the effect of silicate concentration on the abundance of planktonic diatoms in Carocok Tarusan waters as much as 2.97%, while the remaining 97.03% is influenced by other factors.
Water Pollution Levels Based on Organic Matter Parameters and Amount of Escherichia coli Bacteria in the Mosque River Estuary of Dumai City Abmi, Cyndy; Nedi, Syahril; Effendi, Irwan
Journal of Coastal and Ocean Sciences Vol. 2 No. 2 (2021): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was conducted in March 2020 at Mosque River Estuary of Dumai City, Riau Province. The aimed of this research was to determine the pollution levels in the Mosque River Estuary based on organic matter parameters and E. coli bacteria. DO analysis refers to SNI 06.6989.14-2004, BOD5 refers to SNI 06-2503-2009, BOT refers to SNI 06-6989.22-2004 and E. coli bacteria refers to SNI 2897: 2008. The results of DO measurements ranged from 5.30 - 5.56 mg/l, BOD5 ranged from 16.5-21.8 mg/l, BOT ranged from 15 - 162 mg/l, and bacteria E. coli ranges from 11.1 - 1,100 MPN/100ml. Based on the results of the account of the Pollution Index, the Mosque River Estuary waters of Dumai City, Riau Province, are categorized as light to moderate pollution.
Ratio of Elements Carbon (C), Nitrogen (N), and Phosphorus (P) At Sediment in Seagrass Ecosystem Nirwana Beach Padang West Sumatera Silitonga, May Sarah; Nedi, Syahril; Zulkifli, Zulkifli
Journal of Coastal and Ocean Sciences Vol. 2 No. 3 (2021): September
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was conducted in November 2020 at Nirwana Beach, Teluk Bayur, Padang City, West Sumatra Province. The organic carbon concentration in the sediments at Nirwana Beach ranges from 1.0320 – 3.03550%, the nitrate content ranges from 0.8599– 0.9577 mg/L, the phosphate 1.8231– 2.7616 mg/L. The C:N:P ratio of sediment is 18.75:1:2.25. The type of sediment found in this study is gravel-sand and seagrass found in the research location was Thalassia hemprichii with a density of 105 - 312 stands/m2. The correlation between the concentration of organic carbon, nitrate, and phosphate on the density of seagrass species is positive.
Level of Water Pollution Based on Organic Material Parameters and Number of Bacteria Escherechia coli in Dumai River Estuary, Dumai City Lubis, Nur Aisyah; Nedi, Syahril; Effendi, Irwan
Journal of Coastal and Ocean Sciences Vol. 2 No. 2 (2021): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was conducted in March 2020 at the Dumai River Estuary, Dumai City, Riau Province. The purpose of this study was to analyze the parameters of OT, BOD and TOM in the Dumai River Estuary; analyzing E. coli bacteria in the Dumai River Estuary and Determining the Level of Water Pollution Based on the Content of Organic Material Parameters and E. coli in the Dumai River Estuary. The data analysis method refers to OT (SNI 06.6989.14-2004), BOD (SNI 06-2503-2009), BOT (SNI 06-6989.22-2004) and E. coli (SNI 2897-2008). The results of measuring the parameters of organic matter content in the Dumai River Estuary, OT levels ranged from 4.1 - 4.6 mg /L, BOD5 levels ranged from 21.5 - 30.6 mg /L, the TOM content in The Dumai River Estuary ranges from 104 -165 mg /L and E. coli bacteria in the Dumai River Estuary ranges from 180 - 764 MPN /100 mL. The level of pollution at the Dumai River Estuary is based on the parameters of organic matter and E. coli content, including the criteria for light pollution.
Analisis of Total Oil Content and Planktonic Diatom (Bacillariophyceae) in the Waters of Lalang Strait, Mengkapan Village Siak Regency Sinaga, Octavia Lorensa Br; Siregar, Sofyan Husein; Nedi, Syahril
Jurnal Perikanan dan Kelautan Vol. 27 No. 2 (2022): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Oil pollution in the waters is one of the factors that affect the abundance of fhytoplankton, especially the diatom. The waters of Lalang Strait, Mengkapan Village, are used as international shipping lanes and industrial areas. This study aims to analyze the total oil content, calculate the abundance of planktonic diatoms, and explain the relationship between the total oil content and the abundance of planktonic diatoms carried out in the Lalang Strait waters, Mengkapan Village, Siak Regency, Riau Province. This research uses survey method. Station 1 is near Tanjung Buton Port, station 2 is in the mangrove ecotourism area, and station 3 is in the fishing port and near the settlement. The result of oil content analysis obtained an average value of 0,00016 ppm. The highest oil content at station 3 is 0,00035 ppm and the lowest at station 2 is 0,00011 ppm. The results of the calculation of the abundance of planktonic diatoms ranged from 5.014 to 22.062 cells/L. The highest abundance at station 1 was 17.716 cells/L. The lowest abundance was at station 2 which was 9.694 cells/L. Simple linear regression test result, obtained equation Y= 14,2644+(-3802,27x). The coefficient of determination (R2)= 0,002 states 0,2 % of the abundance of planktonic diatoms is influenced by oil content and the rest is influenced by other environmental factors. Correlation coefficient (r) = 0,053, so the relationship of total oil content with the abundance of planktonic diatoms is very weak.
Analysis of the Suitability of Pasumpahan Island Marine Tourism Based on the Tourism Suitability Index Pradana, Muhammad Aditya; Rifardi, Rifardi; Nedi, Syahril
Jurnal Perikanan dan Kelautan Vol. 28 No. 2 (2023): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Pasumpahan Island is one of the national and international tourist destinations located in Padang City, West Sumatra Province. This island is included in the Regional Marine Protected Area (KKLD) which has a very good coral reef ecosystem, so its management must be following applicable laws and regulations. This research was conducted in March 2022 on Pasumpahan Island, Bungus District, Padang City, West Sumatra Province. The method used is a field survey with data collection using a purposive sampling method. The measured index of water quality was processed using the Storet method. Pasumpahan Island's physical environment is relatively good with a wide expanse of white sand. The suitability of marine tourism in this island area based on the tourism suitability index (IKW) is 85.71% which is included in the S1 category (very suitable). The water quality of the Pasumpahan Island tourist area based on the water quality index (IKP) is in the very good category. Based on the IKW and IKP, the tourist area of ​​Pasumpahan Island is very feasible to be developed as a national marine tourism area.
Composition, Types, and Abundance of Microplastics in Water, Sediments, and Blood Clams (Anadara granosa) in the Coastal Waters of Sinaboi, Rokan Hilir Regency Rinaldy, Rahmat; Amin, Bintal; Nedi, Syahril
Journal of Coastal and Ocean Sciences Vol. 7 No. 2 (2026): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.7.2.92-101

Abstract

Microplastics are plastic particles smaller than 5 mm that are difficult to degrade and tend to persist for long periods. This study aims to analyze the types and abundance of microplastics, as well as differences in abundance and their relationships in water, sediment, and blood clams (Anadara granosa). This study was conducted in the waters off Sinaboi Beach, Rokan Hilir Regency, and continued at the Marine Chemistry Laboratory, Department of Marine Science, Faculty of Fisheries and Marine Sciences, Universitas Riau. The method used was a survey employing a purposive sampling approach. The results of this study indicate that the composition of microplastic types found in the waters of Sinaboi Beach included fibers, fragments, films, foams, and granules (pellets); however, in the sediments and blood clams, only granules (pellets) were found. The average abundance of microplastics in water, sediment, and blood clams was 1,467 particles/L, 1,299 particles/g, and 6,844 particles/g, respectively. Statistical analysis showed that the abundance of microplastics in water, sediment, and blood clams based on sampling stations did not differ significantly (p > 0.05). Microplastic abundance in blood clams differed significantly from that in water and sediment (p < 0.05), whereas the comparison between water and sediment showed nearly equivalent abundance levels (p > 0.05). The strongest relationship was found between microplastic abundance in blood clams and sediment, showing a moderate positive correlation
Abundance of Microplastics in Water and Sediment in Coastal Waters of Tanah Merah Village, Meranti Islands Regency Saputra, Rengki; Amin, Bintal; Nedi, Syahril
Journal of Coastal and Ocean Sciences Vol. 7 No. 2 (2026): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.7.2.108-113

Abstract

This study aims to analyze the types and abundance of microplastics in water and sediment between research stations and to examine differences in microplastic abundance across sediment depths in the coastal waters of Tanah Merah Village, Meranti Islands Regency. Samples were taken from three different locations: residential areas, fishing ports, and mangrove areas. The number of water and sediment samples from the three research stations was 27. Water quality parameters, including temperature, salinity, pH, and current velocity, were measured to assess the condition of the aquatic environment. The results showed that four types of microplastics were found, namely fragments, fibers, films, and pellets. The abundance of microplastics in seawater had an average value of 0.86 particles/L, with fragments being the most dominant type. Meanwhile, the abundance of microplastics in sediment had an average value of 1084.33 particles/kg of sediment, with fibers dominating. Based on sediment depth, the highest microplastic abundance was observed at station three in the 0-10 cm layer, with an average of 1010 particles/kg of sediment. The abundance of microplastics in water and sediment shows a significant difference. This is because there is a significant relationship between the abundance of microplastics in water and sediment
Co-Authors AA Sudharmawan, AA Abdullah &#039; abmi, cyndy Adini Dwi Ratna Hafnizar Afdol, Muhammad Afrizal Tanjung Afrizal Tanjung Al Usman Alfiati Silfi Amin Fatah Andhini, Nadia Andika Sitohang Anthony Hamzah Aqil Fikar Rivai Aras Mulyadi Aritonang, Desy Novela Azhara Diana Azizul Fauzan Bambang Pramudya Bariddah, Sania Barnes Silitonga Besri Nasrul Billa, Yulia Salsa Bintal Amin Brilliant Esye Lousiana Budijono, Budijono Chandra M Aulia Damai S Harefa Damaiyanti, Novi Defandra, Alif Denny B Hutagaol, Denny B Dessy Yoswaty Dewi, Anggie Sukma Dewita Dewita Dianti Farhana Kamasela Dinda Nurbaiti Edy T S Sihombing Efendi, Musanif Efriyeldi, Efriyeldi Elizal Elizal Elizal Elizal Elizal Elizal Elizal, Elizal ESTY KURNIAWATI Etty Riani Etty Riani Exaudi, Bonita Tiolina Fajri Ramayori Fatma, Nisa Tria Fauzan, Azizul Febri Wando Situmorang Feliatra Fuad, M Anwar Gurning, Misael Gusmanti, Afni Herlin Margaretha Situmorang Hesti Asriwandari Hisbullah, Ali Akbar Irvina Nurachmi Irwan Effendi Irwan Effendi Ishlahul Fikri Islamiati, Bening Jumahat Siregar, Jumahat Jumiati, Melvy Khaironisa, Riska Lamun Bathara Lazuardi, Andika Lubis, Nur Aisyah Mahdiyah, Evfi Malihah, Maida Manik, Yolanda Manuwoto Manuwoto Mayang Shintana, Mayang Meiska, Muthia Michael Prawira, Michael Moulidia, Candri Muhammad Aditya Pradana Muhammad Amien Musrifin Ghalib Musyirna Rahmah NST Mutia, Safira Nababan, Sumiati Friesledi Ningrum, Indah Puspita Nursit Wijayanto Nursyirwani, Nursyirwani Octavia Lorensa Br Sinaga Parbo, Annisa Presti Pasaribu, Ridwan Saiful Basri Pauji, Risky Antonio Paul Rozeki Sinaga Phivi Andriza Phivi Andriza Pradana, Muhammad Aditya Pramukti, Masdhuki Puspita, Sarah Putri, Rahmi Putri, Rahmi Delima Putri, Rukiana Audi Rahmat Hidayat Rambe, Sakinah Rachmadani Rasmiati, Eva Resfianto Resfianto Rica Purnama Sari Ridowan Kolif Ridwan Manda Putra Ridwan Saiful Basri Pasaribu Rifaldi Rifaldi, Rifaldi Rifardi Rinaldy, Rahmat Rio Aprialis Safitra Riska Khaironisa Ronal Kurniawan Ronaldy Saputra Simamora, Ronaldy Saputra Rozalina, Rozalina Rozalina Saharudin Saharudin Saputra, Muhammad Nasrul Saputra, Rengki Sari, Lita Semangat Riski Hasibuan Sihaloho, Elpon Silitonga, May Sarah Simanjuntak, Benny Ly Sinaga, Octavia Lorensa Br Sirait, Juliper Parasian Siregar, Sofyan Sofyan Husein Siregar Sri Ramadhani Suardi &#039; Sukendi Sukendi Sumiati Friesledi Nababan Suriyanto Suriyanto Syafruddin Nasution Syah, M. Rofofiif Syahira, Siti Aliyah Syukri Fajar Tampubolon, Theresia Tengku Rahma Lopi Tio Afandi Nasution Tomi Suhendra Utama, Rinol Putra Wage Pranowo Windarti Windarti Yandra, Yoli Yenisustri Ani Yulina Sari Yunus, Budi Andri Yusni Ikhwan Yusni Ikhwan Siregar Zulkifli &#039; Zulkifli Zulkifli