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Nur Arifin
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arifinik013@gmail.com
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ajoas@ejournal.unri.ac.id
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Gedung LPPM Universitas Riau, Kampus Bina Widya, Jl. H.R. Soebrantas Km 12.5, Panam. Pekanbaru, Riau - 28293. Indonesia
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Riau
INDONESIA
Asian Journal of Aquatic Sciences
Published by Universitas Riau
ISSN : 2655366X     EISSN : 27164608     DOI : http://dx.doi.org/10.31258/ajoas
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Asian Journal Of Aquatic Sciences is a journal publishes scientific articles from research by lecturers and other researchers in the waters sector. Focusing on aspects of aquatic ecology for the use of this habitat as an ecosystem for producing food (fisheries and agriculture) and its function for the earth's ecosystem. Covers aspects of biology, physics and chemistry, both for freshwater (rivers, lakes, swamps, reservoirs), brackish waters (mangrove swamps, river estuaries) and marine waters (coastal and offshore seas).
Arjuna Subject : -
Articles 524 Documents
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ANALYSIS OF NITRATE, PHOSPHATE AND CONCENTRATION ABILITY OF DIATOM (Bacillariophyta) PLANKTONIK IN THE SUMATERA PROVINCE OF WEST NIRWANA BEACH Tampubolon, Theresia; Nurrachmi, Irvina; Nedi, Syahril
Asian Journal of Aquatic Sciences Vol. 2 No. 1 (2019): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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Abstract

This research was conducted in August 2018 with the aim to determine the concentration of nitrate and phosphate in the waters of Nirwana Beach, find out the type and abundance of diatoms found in the waters of Nirwana Beach, and determine the relationship of nitrate and phosphate concentrations to diatoms in Nirwana Beach waters. Determination of sampling location using purposive sampling, namely by taking into account the conditions and conditions of the research area. Sampling of nitrate and phosphate using a sample bottle measuring 100 ml then given preservatives and diatom samples using a bucket and filtered with plankton net no.25 and preserved with 4% lugol solution as much as 3-4 drops and analysis was carried out at the Marine Chemistry and Marine Biology Laboratory , Faculty of Fisheries and Marine Affairs, University of Riau. The results showed nitrate concentration in Nirwana Beach waters ranging from 0.5 mg / l - 0.3 mg / l. And phosphate concentration in the waters of Nirwana Beach ranges from 0.19 mg / l - 0.08 mg / l. In the coastal waters of Nirvana there are 16 species of diatoms found. The highest abundance of diatom species from all species found was Cosconidiscus sp with an average of 4263 ind / l per station. While the lowest abundance of species is Melosira sp, Thalassionema sp, Neodelphinies sp, Rhizossolenia sp and Cocconeis sp with an average of 73.5 ind / l. Diatom diversity index (H ') in Nirwana Beach waters is classified as moderate and community stability is categorized as moderate, there is no type that dominates the uniformity index (E) Nirwana Beach waters are still balanced and there is no competition for food or places. and phosphate with an abundance of diatoms which in this case means that the higher the concentration of nitrate and phosphate, the more abundance of diatoms.
Composition and Density of Marine Debris in the Mangrove Ecosystems of the Sungai Rawa Village, Sungai Apit Subsdistrict, Siak Regency, Riau Province Fajriah, Nurul; Fauzi, Muhammad; Sumiarsih, Eni
Asian Journal of Aquatic Sciences Vol. 2 No. 1 (2019): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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Abstract

Marine debris is a type of pollutant that commonly found in the mangrove ecosystems. A research aims to determine the composition and density of marine debris in the mangrove ecosystem of the Sungai Rawa Village was conducted in June - July 2018. A survey method was used in this study. Samplings were done three times (once / 2 weeks) at 3 stations namely S1 (ecotourism area), S2 (natural mangrove forest) and S3 (port area and settlement area). Marine debris were collected from 3 plots (10 x 10 m) placed along the transect line. The type of marine debris found in the mangrove ecosystem consists of plastic, glass, rubber, fabric, styrofoam, nets, cans, wood, steel and paper. The density of marine debris based on its characteristics are: megadebris (0.01 - 0.04 items/m2; 4.61 - 34.67 grams/m2), macrodebris (1.43 - 4.75 items/m2; 249.19 - 724.53 grams/m2), mesodebris (0.79 - 2.20 items/m2; 1.54 - 3.23 grams/m2). The most common marine debris found is plastic (69.27 %) and styrofoam (15.65 %).
CONTENTS OF NITRATES, PHOSPHATES, SILICATES AND MISTAKES DIATOMS (Epiphytic) IN SEAGRASSES (Thalassia hemprichii) WATERS NIRWANA BEACH KECAMATAN TELUK NIBUNG KOTA PADANG SUMATERA BARAT PROVINCE Rambe, Sakinah Rachmadani; Nedi, Syahril; Nurrachmi, Irvina
Asian Journal of Aquatic Sciences Vol. 2 No. 1 (2019): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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Abstract

Epiphytic diatoms are diatoms whose lives are associated with plants, one of which is seagrass. Nitrates, phosphates and silicates are needed to support growth and development, especially epiphytic which attaches to seagrass leaves. The research was conducted in May 2018 in the waters of Nirwana Beach, Teluk Nibung Subdistrict, Padang City, West Sumatra Province. The aim of this study was to determine the relationship of nitrate, phosphate, and silicate content to the abundance of diatoms. The method used in this study is the survey method. Taking diatom samples is done by grinding the surface of seagrass leaves using a brush, while sampling nitrates, phosphates and silicates is done using a water sampler. The results of this study indicate that nitrate concentrations ranged from 1,250-1,255 mg / l, phosphate 0,031-0,570 mg / l and silicate 1,180-1,700 mg/l. The total abundance of diatoms ranges from 459-3446 ind / cm2, where the diatom genus that dominates at each station is Navicula, Isthmia, and Stephanopyxis. Based on statistical analysis shows that the content of nitrate, phosphate, and silicate has a positive relationship to the abundance of epiphytic diatoms.
COMPOSITION AND AMOUNT OF MARINE DEBRIS IN THE MANGROVE AREA IN MENGKAPAN VILLAGE, SUNGAI APIT DISTRICT, SIAK REGENCY, RIAU PROVINCE Silmarita, Silmarita; Fauzi, Muhammad; Sumiarsih, Eni
Asian Journal of Aquatic Sciences Vol. 2 No. 1 (2019): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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Abstract

Marine debris is a type of pollutant that commonly found in the mangrove ecosystem. A study aims to investigate the composition, amount and oceanographic parameters that influence the presence of marine debris in Mengkapan mangrove ecotourism area has been conducted from June to August 2018. A survey method was used in this study. Sampling was done three times (once/ two weeks) in 3 observation stations. There were 3 stations namely S1 (settlement area), S2 (ecotourism area) and S3 (port area). Marine debris were collected from 3 plots (10 x 10 m) placed along the transect line. Results shown that the types of marine debris found in the observation area were plastic, glass, rubber, fabric, styrofoam, nets, cans, and paper. The most common debris found is plastic (2,603 items/m2). Total amount of marine debris in the Mengkapan area is 3,232 items/m2 (18.497 grams/m2). Macrodebris is the most common debris found
Morphometric, Meristic, and Growth Patterns of the Strombus turturella from the Dompak Island Coastal Area, Tanjungpinang Kepulauan Riau Henny, Henny; Eddiwan, Eddiwan; Efawani, Efawani
Asian Journal of Aquatic Sciences Vol. 2 No. 1 (2019): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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Abstract

Strombus turturella is a type of gastropods that live in the shallow coastal area of the Dompak Island. A research aims to understand the morphometrical, meristical characteristics and growth patterns of S. turturella from the Dompak Island was conducted in June-July 2018. The number of snail sampled was 400, with 46.98-83.07 TL mm and 13-46 grams BW. There were six morphological characteristics measured, there were total length, shell length, aperture length, shell width, shell depth and lip thickness, and there was one meristical characteristic count, namely the number of spire. Results shown that there are 5 morphometrical characteristic differences in males and females. Total length of male is longer than that of the female. While other characteristics, such as the shell length and aperture of the females were longer, the shell was wider, deeper and the lip was thicker than those of the males. The number of spire was 4-9 in males and 4-8 in females. The lengh-weight relationship shown that the growth of males and females is allometric negative (b=0.503).
TYPE AND DENSITY OF FISH IN THE INDRAGIRI RIVER LUBUK TERENTANG VILLAGE, GUNUNG TOAR DISTRICT, KUANTAN SINGINGI REGENCY, RIAU PROVINCE Aqila, Nesha; Sumiarsih, Eni; Fajri, Nur El
Asian Journal of Aquatic Sciences Vol. 2 No. 1 (2019): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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Abstract

Indragiri River has high fishery potential. Fishing activities conducted however, affect fish population in general. A research aims to determine the community structure of fish in that waters was conducted in 16-21 August 2018. Fish was sampled every day for 15 days. The fish was captured using gill net, nets and fishing rods. Data analyzed were density fish and type of fish. There were 21 types of fish captured, they were belonged to 9 families, namely Cyprinidae, Belontidae, Osphronemidae, Siluridae, Bagridae, Loricarinae, Helostomatidae, Pangasidae and Mastecemlidae. The highest fish density is Barbodes schanefeldi (Kapiek) 46,183 and the lowest is Macrognathus pardalis (tilan) 0,015.
EFFECTIVENESS TEST OF NIPAH EXTRACT AS LARVACIDE ON MOSQUITO LARVAE (Aedes aegpti) Purba, Thadeus Mariode Triputra; Effendi, Irwan; Feliatra, Feli
Asian Journal of Aquatic Sciences Vol. 2 No. 1 (2019): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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Abstract

This research was conducted in January - February 2019. The purpose of this study was to examine the effectiveness of mangrove extracts on stems and fruit on the growth of Aedes aegypti mosquito larvae and to know Lethal Concentration LC50 and Lethal Time LT50. The method used is the experimental method, with the experimental design is a completely randomized design (CRD). The treatment of nipah fruit and stem extract concentrations was 3%, 6% and 9% with contact time of 15 minutes, 30 minutes, 45 minutes 60 minutes, 120 minutes, 480 minutes and the number of replications 3 times with 2 trials. To find out (LC50) and (LT50), the data was analyzed using the SPSS program. The sample of this research is stem and nipah fruit taken in the mangrove area of Kayu Ara Village, Siak Regency. Aedes aegypti larvae are taken at a water reservoir next to the Arfaunas Mosque in Tampan District. The results showed that the stem and nipah fruit extracts had effective killing power against Aedes aegpti larvae. The extract that was more effective in killing mosquito larvae was the nipah fruit extract compared to the nipah stem extract seen in the number of larval deaths with LC50 = 3.398% and LT50 = 3.540 hours. This shows that the level of toxicity is quite toxic.
TEST THE ABILITY OF SEDIMENT BACTERIA ISOLATES IN DEGRADATING PHENOL Monika, Siska; Yoswaty, Dessy; Nursyirwani, Nursyirwani
Asian Journal of Aquatic Sciences Vol. 2 No. 1 (2019): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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Abstract

Phenol degrading bacteria can be found in various habitats in marine environments. This study aims to obtain bacteria from sediments that are able to degrade phenol. The process of bacterial purification and degradation was carried out from August to September 2018 at the Marine Microbiology Laboratory, Department of Marine Sciences, Faculty of Fisheries and Marine, University of Riau. Analysis of the reduction in phenol concentration was carried out using the APHA 5530 method using UV-VIS spectrophotometry conducted at the Health and Environment Laboratory. The bacterial isolates used as test bacteria were isolates BF1A, BF4B and BF9C. Bacterial and biochemical tests were carried out for all bacterial isolates. Two isolated showed mehyl red negative, all isolates were motile. Three isolates were positive catalase, able to ferment glucose and sucrose fermented citrate and two isolat were Gram negative bacterial. The three bacterial isolates were able to degrade phenol with the highest degradation for 1ppm shown in isolates BF1A, the highest degradation of concentrations of 2 ppm and 3 ppm was shown in isolates BF9C. Thus, the isolat BF9C was able to degrade the highest phenol
RELATIONSHIP OF ORGANIC MATERIAL WITH ABUNDANCE OF TOXIC BENTHIC DINOFLAGELLATA ON SEDIMENT IN WATERS OF TELUK BAKAU VILLAGE BINTAN REGENCY, RIAU ISLAND PROVINCE Afrizani, Syafrinaldi; Nurrachmi, Irvina; Effendi, Irwan
Asian Journal of Aquatic Sciences Vol. 2 No. 2 (2019): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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Abstract

Dinoflagellata was included in one of microalgae groups which are on waters of the sea and the river, it can be found on detritus floats, sediments, and also swim freely. This research done on May – June 2018 at waters of the mangrove bay village, Bintan Regency, Riau Island Province. The aims of this research was to know relationship between organic material concentration toward abundance of toxic benthic dinoflagellata on sediment. In addition, to analyzed organic material concentratin and amount of abundance of toxic benthic dinoflagellata on sediment in waters of Teluk Bakau. The method used was survey method which is the location of sampling is done by pursosive sampling. Measurement of water quality sampling done at any point, the surface water temperature range 31-33oC, 28-31 ‰ salinity, pH 8-9 and the current speed from 0.045 to 0.051 m / det.Perairan predominantly sandy gravel sediments, making an average of organic materials ditemukn at each station is 0.027%, 0.043%, 0.033%, 0.024%. The result of this research found 3 genus of toxic dinoflagellata, which are Prorocentrum, Gambierdiscus, and Ostreopsis. Poisonous dinoflagelatta can produced a several types of toxic that found the sea. The highest of abundance found at station 2 on 75,615 sel/m2 and the lowest found at station 1 on 35,176 sel/m2. the results of simple linear regression analysis the relationship between the concentration of organic material with the abundance of dinoflagellates has a positive relationship with the regression equation y = 32,913 + 556,13x
IDENTIFICATION OF MACROPHYTA IN THE SWAMP AREA OF THE SAWAH VILLAGE, KAMPAR REGENCY, RIAU PROVINCE Nasution, Aprilia Safitri; Windarti, Windarti; Efawani, Efawani
Asian Journal of Aquatic Sciences Vol. 2 No. 2 (2019): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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Abstract

There were many types of macrophyta present in the swamp area of the Sawah Village, but there was no information about the types of macrophyta in that area. To understand the type of macrophyta presence in that area, a research has been carried out in February 2019. The method usedz is a the survey method, where the swanp area of the Sawah Village used as the location of the research and macrophytes as the object of research. Sampling was done once during the study. The plants were then identified based on Steenis (1981). There are 10 types of macrophytes found in the swanp area of the Sawah Village namely: Colocasia esculenta, Eichhornia crassipes, Eleocharis dulcis, Paspalum comersonii, Azolla pinnata, Utricularia aurea, Salvinia natans, Nepbrolepis biserrata, Monochoria vaginalis, Panicum repens

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