Claim Missing Document
Check
Articles

ANALYSIS CONCENTRATION OF SURFACTANT ANIONIC AND THE RELATION WITH DIATOM ABUNDANCE IN BUNGUS WATER, PADANG WEST SUMATERA Rukiana; Syahril Nedi; irvina Nurachmi
Asian Journal of Aquatic Sciences Vol 3 No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.1.1-10

Abstract

This research aims to analyze surfactant anionic concentration and diatom abundance that has been implemented at May 2018 in Bungus rivers, Padang. This Research were conducted in survey method, four station were eshtablished with three replication of each sampling station. Analysis of surfactant anionic and diatom content was done at Chemistry Oceanography Laboratory and diatom identification was performed at Biology Oceanography Laboratory. The results showed that surfactant content in the waters ranged from 0,309-0,773 ppm and diatom abundance based on laboratory test on ranged 40,7407-81,4815 Ind/l. The correlation of surfactant and diatom content in waters by using linear regression y = Y = 94.56 -66.8x with correlation coefficient r = 0,809 and correlation water quality parameters with diatom abundance by using multiple linear regression Y= 787,189 -238,828X1 -9,032X2 -6,185X3 +5,371X4 +303,081X5 -35,631X6 with determination regression 0,995 and correlation coefficient r = 0,997.
ANALYSIS OF NITRATE CONCENTRATION, PHOSPHATE AND SILICATE RELATIONSHIP WITH THE ABUNDANCE OF PLANKTONIC DIATOMS IN MERAL WATERS, KARIMUN DISTRICT Rozalina; Syahril Nedi; irvina Nurachmi
Asian Journal of Aquatic Sciences Vol 3 No 1 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.1.60-68

Abstract

Input of nutrients into the waters from various human activities (residential and industry) has the potential to cause changes in the physical, chemical and biological conditions of the waters. The study aims to determine the relationship of concentrations of nitrate, phosphate and silicate with the abundance of diatoms in the Meral waters. The method used is the survey method, the determination of the location of sampling is done by purposive sampling, data analysis (multiple regression). Based in the results of laboratory analysis nitrate concentrations ranged from 0,033 – 0,051mg/l, the phosphate concentration ranged from 0,076 – 0,086 mg/l, and silicate concentration ranged from 0,043 – 0,052 mg/l. The abundance of diatoms in Tanjung Tiram waters ranged from 90,3 – 208,3 ind/l. The results of statistical analysis of the relationship of nitrate, phosphate and silicate with the abundance of diatoms are expressed in terms of equation y = 58,460 + 904,562Nitrate – 251,562phosphate + 1573,489Silicate. This statement explains the concentration of nitrate, silicate positive (+) to the abundance of diatoms and phosphate related negative (-) to the abundance of diatoms. This condition shows that the nutrient concentration in these waters is relatively high so that it affects the abundance of diatoms.
POPULATION DENSITY AND LENGHT-WEIGHT REALTIONSHIP IN MANGROVE GASTROPOD Cerihidea cingulata AND Littoraria scabra OF PANGKALAN SESAI VILLAGE, DUMAI CITY Sania Bariddah; Syafruddin Nasution; Syahril Nedi
Asian Journal of Aquatic Sciences Vol 3 No 3 (2020): Desember 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.3.193-201

Abstract

Cerithidea cingulata and Littoraria scabra are type of snail that use mangrove ecosystems as one of their habitat. Dumai is one of the industrial cities in the province of Riau, where various kinds of human activities can disrupt the ecosystem of mangroves and its associated biota. This research was conducted in October 2018 in the Mangrove Forest Area (PAB) of Pangkalan Sesai village of Dumai City, aiming to determine population densities and length-weight relationship of C. cingulata and L. scabra. The method used in this study is a survey method. Sampling was conducted by using the line transect method, where each station consists of 3 transects and each transect consists of 3 sampling points as replications. The results showed the population density of C. cingulata and L. scabra snails was higher than at stations near the Dumai river estuary compared with the population near by mangrove forest and length-weight relationship showed that the growth patterns of both C. cingulata and L. scabra were allometric negative and have strong correlation value.
THE CONTENT OF ORGANIC MATTER IN WATER AND SEDIMENT OF PULAU HALANG MUKA DISCRICT ROKAN HILIR RIAU PROVINCE Musanif Effendi; Syahril Nedi; Yusni Ikhwan Siregar
Asian Journal of Aquatic Sciences Vol 3 No 3 (2020): Desember 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.3.3.202-208

Abstract

Organic matter is one indicator of environmental fertility either on land or at sea. Content Organic matter in the waters will experience an increase caused by discharges from households, agriculture, industry and organic waste from land to coast. The objective of this research is to know the content of organic material in water and sediment in the waters of Coast Mirror and the relation of organic matter content to water and sediment. The result of calculation of organic matter content in water ranged from 26.6 – 49.3 mg/l and the content of organic matter in sediment ranged from 3.9 – 5.1 %. Furthermore, through simple linear regression test known that the relationship of organic matter content in water and sediment has a weak relationship with the correlation r = 0.53. The analysis of sedimentary fractions in the pulau halang muka is dominated by muddy substrates.
TOTAL OIL CONTENT AND EPIPHYTIC DIATOM DENSITY IN SEAGRASSES LEAVES Enhalus acoroides AT PANDARATAN BEACH TAPANULI TENGAH REGENCY NORTH SUMATERA PROVINCE Sarah Puspita; Sofyan Husein Siregar; Syahril Nedi
Asian Journal of Aquatic Sciences Vol 4 No 1 (2021): April 2021
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.4.1.21-28

Abstract

The aimed of this study was to determine the total oil content at Pandaratan Beach, determine epiphytic diatoms density in seagrass leaves Enhalus acoroides at Pandaratan Beach, and determined the relationship between total oil content and epiphytic diatoms density in seagrass leaves E. acoroides at Pandaratan Beach. Based on the results of research conducted, the highest total oil content is in the area around the sea transportation route, namely 0.25 ppm and the lowest total oil content is in areas far from human activity, namely 0.16 ppm. The highest epiphytic diatoms density found in areas far from human activities, namely 932.21 Ind/cm2 and the lowest epiphytic diatoms density found in the area around the sea transportation lines, namely 663.41 Ind/cm2.The relationship between total oil content and epiphytic diatoms density at Pandaratan Beach, Tapanuli Tengah Regency, North Sumatra Province has a very weak relationship (r = 0.03).
EFFECT OF NITRATE AND PHOSPATE CONCENTRATION ON Spirulina platensis WITH INDOOR SCALE Safira Mutia; Syahril Nedi; Elizal Elizal
Asian Journal of Aquatic Sciences Vol 4 No 1 (2021): April 2021
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.4.1.29-35

Abstract

One of the microalgae that are widely used in the industrial world is Spirulina platensis which has high nutritional content of protein, fatty acids, vitamins and antioxidants. In its growth, this microalgae requires media and the addition of macronutrients nitrate and phosphate which greatly affect the growth and productivity of S. platensis biomass. This study aims to determine the effect of nitrate and phosphate concentrations on S. platensis biomass on an indoor scale and to determine the optimal nitrate and phosphate concentrations to achieve maximum biomass. This research was conducted in August 2020 as an experimental method, with culturing S. platensis with the addition of different concentrations of nitrate and phosphate. The design used in this study was a Completely Randomized Design consisting of 5 treatments that are 0 ppm, 10 ppm, 20 ppm, 30 ppm, and 40 ppm, each treatment with 3 repetitions. The source of nitrate and phosphate used is NPK. Water quality parameters during culture with temperatures ranging from 29-30oC, salinity 25-26 ppt, and pH 8. The optimal concentrations of nitrate and phosphate to achieve the maximum biomass is in treatment C (30 ppm) with a total of biomass 0,43 g. Whereas in treatment D (40 ppm) the biomass did not show a significant increase because the dose was too high with a total of biomass only 0,299 g
SEDIMENT ORGANIC MATTER CONTENT AND MACROZOOBENTHOS ABUDANCE IN THE ESTUARY OF KAMBANG PESISIR SELATAN DISTRICT WEST SUMATERA Rahmi Delima Putri; Syahril Nedi; Efriyeldi Efriyeldi
Asian Journal of Aquatic Sciences Vol 4 No 3 (2021): December
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.4.3.191-196

Abstract

Around the Kambang Estuary, there are fish shelters (TPI), fishing boat ports, residential areas, and mangrove ecosystems. This causes a decrease in water quality due to the increase in organic matter, which has an impact on the life of macrozoobenthos. The study conducted in February 2021 aims to analyze the organic matter content of sediments, identify the type and abundance of macrozoobenthos and the relationship between sedimentary organic matter and the abundance of macrozoobenthos. Determination of stations using purposive sampling method. This research was carried out at 4 stations with 4 sampling points. The results showed that the organic matter content found varied from 4.23 to 8.47%. The abundance of macrozoobenthos ranged from 13.89 to 38.89 ind/m2. The species of macrozoobenthos found at the study site consisted of 8 species from 3 classes of bivalves, gastropods and malacostraca. The relationship between the organic matter content in the sediment and the abundance of macrozoobenthos is obtained by the equation Y = 22.734 + 0.319X, where the coefficient of determination (R2) is 0.003 and the correlation coefficient (r) is 0.054, which is a very weak shows correlation.
FERTILITY ANALYSIS OF BUNGUS TELUK KABUNG WATERS BASED ON THE CONCENTRATIONS OF NITRATE, PHOSPHATE, AND THE ABUNDANCE OF PHYTOPLANKTON Andika Lazuardi; Syahril Nedi; Sofyan Husein Siregar
Asian Journal of Aquatic Sciences Vol 5 No 1 (2022): April 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.5.1.26-33

Abstract

Water fertility is the capacity or ability of waters to provide suitable nutrients for the life of phytoplankton so that it can produce optimum production. This research was conducted on June 2021 in the Waters of Bungus Teluk Kabung, Padang, West Sumatra. The purpose of this study was to determine the fertility level of Bungus Teluk Kabung waters based on the concentration of nitrate, phosphate, and the abundance of phytoplankton. The results of this study show that the fertility rate of Bungus Teluk Kabung waters based on the value of nitrate concentration, phosphate, and phytoplankton abundance in the waters of Bungus Teluk Kabung, Padang, West Sumatra, belongs to the category of waters with low fertility levels (Oligotrophic) to moderate fertility levels (Mesotrophic). The concentration of nitrate and phosphate has a weak relationship with the abundance of phytoplankton in the waters of Bungus Teluk Kabung and there isn’t any significant effect between the concentration of nitrate and phosphate with the abundance of phytoplankton in the waters of Bungus Teluk Kabung, Padang, West Sumatra
ANALYSIS OF MICROPLASTIC CONTENT IN SEAWATER AT PADANG AND PARIAMAN TOURISM BEACHES, WEST SUMATRA PROVINCE Ishlahul Fikri; Syahril Nedi; Elizal Elizal
Asian Journal of Aquatic Sciences Vol 5 No 3 (2022): December
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.5.3.416-420

Abstract

Coastal and marine areas have the potential for anthropogenic pollution. Solid waste, especially plastic, is a pollutant that contributes greatly to polluting coastal areas. Plastic will degrade into small sizes known as microplastics. The purpose of this study was to determine the content of microplastics in the Padang and Pariaman Coastal Waters, West Sumatra. This research was conducted in November 2021 in the seawaters of Padang Wisata Beach (Air Manis Beach and Muaro Lasak Beach) and Pariaman Beach (Kata Beach and Gandoriah Beach) of West Sumatra Province. Based on the results of the study, four types of microplastics were found, namely fiber, film, fragments, and granules. The type of fragment is the dominant type found, followed by the type of film, fiber, and granules. Microplastic abundance at Air Manis Beach ranged from 616.67-2196.97 particles/m3, Muaro Lasak Beach 916.67-2396.67 particles/m3, Kata Beach 320.00-1190.00 particles/m3, and Gandoriah Beach 550, 00-1363.33 particles/m3. In general, at Padang Beach and Pariaman Beach by type, microplastic fragments were the most common type found with a percentage of 53%. The type of film is the second most common type (32%), followed by the type of fiber (11%) and the type of grain (4%). Microplastics were distributed in seawater at Padang Beach and Pariaman Beach with different abundances
Content of Nitrate, Phosphate, and Chlorophyll-a in Terkul Water, Rupat Strait, Riau Indah Puspita Ningrum; Syahril Nedi; Aras Mulyadi
Journal of Coastal and Ocean Sciences Vol. 3 No. 3 (2022): September
Publisher : Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.3.3.182-186

Abstract

The waters of Terkul are related to the strait of Rupat. Around the Terkul area, there is an oil and gas industry with transportation, storage, processing, and distribution of oil supplies to various regions in Sumatra through ship transportation. This activity causes the waters of the Rupat Strait to be prone to oil pollution. Oil pollution can reduce the quality of the waters and cause nutrient content in the waters to decrease. Nutrients greatly affect the concentration of chlorophyll-a in the waters. Chlorophyll-a is a pigment capable of photosynthesis and is present throughout phytoplankton organisms. The purpose of this study was to analyze the association of nitrate concentration and phosphate concentration to chlorophyll-a. the study was conducted in April 2021. Waters sample was collected from the waters of Terkul and sample analysis was conducted in the Marine Chemistry Laboratory. The results of the study show that the association between chlorophyll-a and phosphate corresponds to the regression result of obtaining a value (r) of 0.67. Linearly shows a strong relationship
Co-Authors Abdullah ' Afrizal Tanjung Al Usman Andhini, Nadia Andika Lazuardi Andika Sitohang Annisa Presti Parbo Anthony Hamzah Aqil Fikar Rivai Aras Mulyadi Aras Mulyadi Aras Mulyadi Aritonang, Desy Novela Azhara Diana Azizul Fauzan Bambang Pramudya Barnes Silitonga Besri Nasrul Bintal Amin Brilliant Esye Lousiana Cyndy Abmi Damai S Harefa Denny B Hutagaol, Denny B Dessy Yoswaty Dewita Buchari Dewita Dewita Dianti Farhana Kamasela Edy T S Sihombing Efriyeldi, Efriyeldi Elizal, Elizal ESTY KURNIAWATI Etty Riani F, Feliatra Fajri Ramayori Febri Wando Situmorang Fuad, M Anwar Herlin Margaretha Situmorang Indah Puspita Ningrum irvina Nurachmi Irvina Nurrachmi Irwan Effendi Ishlahul Fikri Islamiati, Bening Juliper Parasian Sirait Jumahat Siregar, Jumahat Lita Sari Manik, Yolanda Manuwoto Manuwoto May Sarah Silitonga Mayang Shintana, Mayang Michael Prawira, Michael Misael Gurning Muhammad Aditya Pradana Muhammad Amien Musanif Effendi Musrifin Ghalib Nababan, Sumiati Friesledi Nisa Tria Fatma Nur Aisyah Lubis Nursit Wijayanto Nursyirwani, Nursyirwani Octavia Lorensa Br Sinaga Pasaribu, Ridwan Saiful Basri Paul Rozeki Sinaga Phivi Andriza Phivi Andriza Rahmad Hidayat Rahmi Delima Putri Rasmiati, Eva Resfianto Resfianto Rica Purnama Sari Ridowan Kolif Ridwan Manda Putra Ridwan Manda Putra Rifardi ' Rifardi Rifardi Rinol Putra Utama Rio Aprialis Safitra Riska Khaironisa Riska Khaironisa Ronaldy Saputra Simamora, Ronaldy Saputra Rozalina Rukiana Safira Mutia Sakinah Rachmadani Rambe Sania Bariddah Sarah Puspita Semangat Riski Hasibuan Sihaloho, Elpon Simanjuntak, Benny Ly Sofyan Husein Siregar Sri Ramadhani Suardi ' Sukendi Sukendi Sumiati Friesledi Nababan Suriyanto Suriyanto Syafruddin Nasution Syukri Fajar Tengku Rahma Lopi Theresia Tampubolon Tomi Suhendra Wage Pranowo Yenisustri Ani Yolanda Manik Yoli Yandra Yulina Sari Yunus, Budi Andri Yusni Ikhwan Yusni Ikhwan Siregar Zulkifli ' Zulkifli Zulkifli