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Nur Arifin
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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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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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EFFECT OF DIFFERENT TYPES OF FERTILIZER ON THE GROWTH OF MARINE PHYTOPLANKTON POPULATION Chlorella vulgaris M. Fauzan, M. Fauzan; Siregar, Sofyan; Nasution, Syafruddin
Asian Journal of Aquatic Sciences Vol. 4 No. 1 (2021): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

This research was conducted on October 13-26, 2019 in the Regional Technical Implementation Unit of the Seawater and Brackish Aquaculture Fisheries Office (UPTD BPBALP Teluk Buo), West Sumatra. This study aims to determine the effect of applying different types of fertilizers to the growth of Chlorella vulgaris microalgae populations on laboratory scale culture. The method used in this study was an experimental method in the laboratory using a completely randomized design (CRD) one factor, namely the difference in fertilizer types with 3 (three) replications. Fertilizers used are Walne fertilizer, ZA (Zwavelzure Ammoniak) and TSP (Triple Super Phosphate). The testing organism in this study was phytoplankton C. vulgaris. The container used was a glass jar (3 liter capacity). The parameters measured in this study include absolute growth, relative growth, specific growth, self-doubling time and water quality. The results of this study indicate that the best type of fertilizer for C.vulgaris population growth was TSP fertilizer, followed by ZA fertilizer and the lowest in Walne fertilizer.
MICROPLASTIC DISTRIBUTION IN SEDIMENTS IN COASTAL OF PARIAMAN CITY, WEST SUMATERA PROVINCE Sianturi, Kalfin; Amin, Bintal; Galib, Musrifin
Asian Journal of Aquatic Sciences Vol. 4 No. 1 (2021): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

Pariaman City is a tourist destination in West Sumatra which in turn may be vulnerable to plastic waste pollution. This study was conducted in February 2020 in the coastal area of Pariaman City with the aim to determine the type and abundance of microplastic and to determine if there are any differences in the number of microplastics between stations and between depths of the sediment. The Survey method was applied and collected data from the field as well as from laboratory analysis were then analyzed and discussed. The results of the study showed that the type of microplastics found from the studied area were fragments, films, and fibres. The most common type found was fibre (59.01 %). The average abundance of microplastics at each station ranged from 178.89 – 235.56 particles/kg of dry sediment. The lowest abundance was at station 1 and the highest was at station 3. The average abundance of microplastic at 0-10 cm depth of dry sediment layer was 199.26 particles/kg and 220.00 particles/kg of dry sediment at 10-20 cm depth. ANOVA and t-test analysis showed that the quantity of microplastic between stations and between two different depths was not significantly different (p >0,05).
COMMUNITY STRUCTURE OF PHYTOPLANKTON AND CHLOROPHYLL-α CONCENTRATION IN THE SUNGAI MESJID VILLAGE DUMAI RIAU PROVINCE Nugraha, Rafiq; Nurrachmi, Irvina; Siregar, Sofyan
Asian Journal of Aquatic Sciences Vol. 4 No. 1 (2021): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

The research was conducted in December 2019 at Sungai Mesjid Village Dumai Riau Province. This study aims were to know the condition of water quality, know the structure of the phytoplankton community, know the concentration of chlorophyll-a and know the effect between chlorophyll-a concentration and phytoplankton abundance in waters. The method used in this study was a survey method. The research location is divided into 3 station points namely Bangsal Aceh, Marine Station and Jalan Dermaga. The results showed that the quality of waters classified as oligotrophic waters. Phytoplankton found in this study consisted of 4 classes and 12 species of phytoplankton and the abundance of phytoplankton has a range between 195.57 - 244.33 ind./l. Diversity index (H') ranges from 1.2951 - 2.1705, dominance index (D) ranges from 0.24 to 0.46 and uniformity index (E) ranges from 0.7825 to 0.9551. The chlorophyll-a concentration in waters of Sungai Mesjid Village in Dumai ranged from 0.0025 to 0.0210 mg/L. Phytoplankton abundance and chlorophyll-a concentration has a moderate effect, wherewith increasing chlorophyll-a concentration, phytoplankton abundance will also increase.
TOXICITY OF SEA GRASS EXTRACT (Eucheuma cottonii AND Gracillaria sp) TO LARVA Artemia salina Putra, Danil; Mulyadi, Aras; Zulkifli, Zulkifli
Asian Journal of Aquatic Sciences Vol. 4 No. 2 (2021): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

Seaweed is a source of foreign exchange, namely as the main export product and a source of income for coastal communities. Previous research on species Eucheuma cottonii and Gracillaria sp contain bioactive compounds that can be used in medicine, for example as anti-cancer. The purpose of this study was to determine the LC50 value and safe concentration of Artemia salina larvae. The research was conducted at the Chemical Oceanography Laboratory of the Department of Marine Sciences, Faculty of Fisheries and Marine, Riau University in July 2020. The method used in this research is the experimental method. The results of the research on the toxicity of the n-hexane extract of seaweed E. cottonii and Gracillaria sp had bioactivity compounds against A. salina shrimp larvae, indicated by a small LC50 value (<1000 ppm), namely 62.62 ppm for E. cottonii and 83.55. ppm for Gracillaria sp, so it is included in the toxic category. According to research by experts, if the extract or compound tested is less than 1000 ppm, it is considered that there is biological activity. For a safe concentration for the survival of A. salina, 6.262 ppm for E. cottonii and 8.355 ppm for Gracillaria sp.
ABILITY OF AMILOLYTIC BACTERIA (Bacillus paramycoides AND Enterobacter cloacae) IN DEGRADING ORGANIC MATERIALS OF MANGROVE LITTLE Putri, Redila; Nursyirwani, Nursyirwani; Feliatra, Feliatra
Asian Journal of Aquatic Sciences Vol. 4 No. 2 (2021): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

This study aims to find out that Bacillus paramycoides and Enterobacter cloacae bacteria can produce amylase enzymes and have the ability to degrade organic matter, especially mangrove litter. From this study it was found that the optimal growth of B.paramycoides and E. cloacae bacteria occurred at 12th hour. The results of measurements and calculations of absorbance values ​​at 630 10.238 x 108 cells/mL (B. paramycoides) and 12.030 x 108 cells/mL (E. cloacae) using the spectrophotometric method. Meanwhile, with the TPC method at 12 hours, the number of bacterial cells was 2.08 x 108 CFU's/mL (B.paramycoides) and 2.44 x 108 CFU's/mL (E. cloacae). The ability to produce the largest amylolytic bacterial amylase enzyme also occurred at 12 hours as much as 0.306 mg/mL (B.paramycoides) with an increase of 0.046 mg/mL and 0.243 mg/mL (E. cloacae) with an increase of 0.028 mg/mL. The bacteria that have the highest amylase enzyme ability is E.cloacae as evidenced by the diameter of the clear zone of 10.10 mm. Testing the ability of amylolytic bacteria in degrading mangrove litter was carried out by adding amylase enzyme as much as 0%, 50% and 100%. Amylolytic bacteria can degrade organic matter by hydrolyzing starch contained in mangrove litter. The most degraded starch content was in the 100% enzyme treatment, which was 1.021 mg/mL (B. paramycoides) and 1.189 mg/mL (E.cloacae).
MACROZOOBENTHOS COMMUNITY STRUCTURE IN INTERTIDAL ZONE OF SAMBUNGO VILLAGE PESISIR SELATAN REGENCY OF WEST SUMATERA PROVINCE Anggara, Bob; Tanjung, Afrizal; Nasution, Syafruddin
Asian Journal of Aquatic Sciences Vol. 4 No. 2 (2021): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

This research was conducted in the village of Sambungo, Silaut District, Pesisir Selatan Regency, West Sumatra Province in August 2020. The purpose of this study was to determine the structure of the macrozoobenthos community which includes: type, density, diversity, uniformity, dominance and distribution patterns. Sampling was done randomly at 3 stations, each station consists of 3 transects and each transect consists of 3 plots, namely in the upper middle and lower in the intertidal zone. The results of the study found 5 classes of macrozoobenthos with 9 species. The abundance values ​​obtained ranged from 3.33 - 5.11 ind/m2. The diversity index value ranges from 1.18-1.54 which is classified as moderate, while the dominance index value ranges from 0.39-0.52, namely there was no species that dominate, the uniformity index value ranges from 0.03-0.06 which is not balanced and the value of the distribution pattern ranges from 2.81 to 3.76 with the pattern of distribution in groups.
POPULATION CONDITIONS OF ECHINOIDEA AND CORAL REEF COVERS IN PONCAN GODANG ISLAND, SIBOLGA, NORTH SUMATERA Adni, Nailul; Mulyadi, Aras; Thamrin, Thamrin
Asian Journal of Aquatic Sciences Vol. 4 No. 2 (2021): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

Poncan Godang Island is included in the appropriate category based on the suitability of land for the Sibolga tourist area, with the presence of tourism activities that can also affect the amount of biodiversity in it. Considering the importance of coral reefs for biodiversity and sea urchins which also have a role in coral reef ecosystems, it is necessary to conduct research on the condition of sea urchins population and the percentage of coral reefs on Poncan Godang Island. Sea urchin and coral reef data were collected using the Line Intercept Transect (LIT) method by monitoring directly on the transect line along 50 meters. The results obtained indicate that the population of sea urchins in the waters of Poncan Godang Island, North Sumatra can be described, that sea urchins do not affect the coral reef ecosystem because at stations 1 and 5 there is no sea urchin and the percentage of coral cover is classified as bad, but at station 3 there are 32 individuals with coral reef cover conditions, while at stations with The percentage of good coral cover is that at station 4 there are only 25 individuals, as well as at station 2 where the percentage of coral cover is higher than station 3 and there are no sea urchins.
APPLICATION OF POC FORMULATION FROM BANANA PEEL WASTE AND PATIN FISH OFFAL IN Lemna sp AND GOURAMI (Osphronemus goramy) CULTIVATION MEDIA Ramadhan, Dandi; Syafriadiman, Syafriadiman; Hasibuan, Saberina
Asian Journal of Aquatic Sciences Vol. 8 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.1.86-94

Abstract

The gourami (Osphronemus gouramy) cultivation faces challenges in terms of relatively slow growth. Lemna sp. plants can be a natural food for gourami and improve water quality to support gourami cultivation. However, Lemna sp. plants require NPK elements that can come from POC formulations from banana peel waste and catfish offal. This study aims to determine the effect of POC formulations from banana peel waste and catfish offal on Lemna sp biomass and to determine the best dose of POC formulations from banana peel waste and catfish offal on Lemna sp and goramy cultivation media. The research was conducted from August to November 2024 at the Hatchery and Environmental Quality Laboratory of Aquaculture, Faculty of Fisheries and Marine Sciences, Universitas Riau. The experimental study used a completely randomised design (CRD) with four treatments and three replicates. The treatments used were P0 (as control), P1: 1.625 mL/L, P2: 2.625 mL/L, and P3: 3.625 mL/L. The results showed that POC formulations from banana peel waste and catfish offal affected Lemna sp.'s biomass and goramy's growth. With treatment P1 (1.625 mL/L), the best dose was in Lemna sp. cultivation media and gourami (with treatment P1 (1.625 mL/L). Treatment P1(1,625 mL/L) is the best dose on the biomass of Lemna sp, which amounted to 767.47 g/m2, and the specific growth rate of Lemna sp. plants of 6.17%/day
THE RELATIONSHIP BETWEEN MANGROVE DENSITY AND SEDIMENTATION RATE IN COASTAL KUALA JAMBI DISTRICT TANJUNG JABUNG TIMUR JAMBI PROVINCE Chaniago, Rizki; Samiaji, Joko; Wibowo, Muhammad Arief
Asian Journal of Aquatic Sciences Vol. 6 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

This research was carried out from March to April 2021 in the coastal area of ​​Kuala Jambi District, Tanjung Jabung Timur Regency, Jambi Province. The samples were processed at the Marine Biology and Marine Chemistry Laboratory, Faculty of Fisheries and Marine, Universitas Riau, which aims to examine the density of mangroves, analyze the sedimentation rate, and know the relationship between mangrove density and sedimentation rate. A survey method was used in this study. The results showed that the dominant mangrove species in the coastal waters of Kuala Jambi was Sonneratia alba with an Important Index Value (INP) of 103.5%. Mangrove density in the coastal waters of Kuala Jambi was included in good criteria with moderate and very dense mangrove cover. The bottom sediment of the coastal waters of Kuala Jambi was dominated by the type of sandy mud with a percentage of 42.23 - 55.63%. The value of the sedimentation rate in the coastal waters of Kuala Jambi at station I ranged from 94.401 to 141.602 mm/year. At station II, the sedimentation rate was between 98.692 and 168.778 mm/year, while at station III the sedimentation rate was from 100.122 to 145.893 mm/year. Mangrove density had a very close relationship with the sedimentation rate, where the higher the mangrove density, was followed by the higher the sedimentation rate.
HEMATOLOGY OF ASIAN REDTAIL CATFISH (Hemibagrus nemurus) REARED IN MEDIA WITH REGULAR ADDITION OF PROBIOTICS Lestari, Rona; Syawal, Henni; Lukistyowati, Iesje
Asian Journal of Aquatic Sciences Vol. 6 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Abstract

Multi-cell probiotic containing bacteria Nitrosomonas sp., Nitrobacter sp., and Bacillus sp. This research was conducted from March to May 2021 at the Fish Disease and Parasite Laboratory, Department of Aquaculture, Faculty of Fisheries and Marine, Universitas Riau. This study aimed to analyze the hematology of Asian redtail catfish reared in media that was added with probiotics periodically and to obtain the best time interval for giving probiotics to the rearing medium. The method used in this study is an experimental method by applying a Completely Randomized Design (CRD) with five treatment levels and three replications. The treatments used were the administration of probiotics at a dose of 0,01 mL/L of water with different time intervals, P0 (without treatment), P1 (5 days once), P2 (10 days once), P3: (15 days once), and P4 (20 days once). Fish were reared for 50 days. The results show that the Asian redtail catfish reared with the addition of probiotics in the rearing medium had a significant effect (P<0.05) with the best time interval being once every 5 days in the P1 treatment, seen from the total erythrocytes 2.43 x 106 cells/mm3, hematocrit level 28.67%, hemoglobin level 7.40 g/dL, total leukocytes 9.92 x 104 cells/mm3, leukocrit level 1.83%, and glucose 49.67 g /dL. Water quality during the study was still in the normal range that could support the growth of Asian redtail Catfish, namely temperature 26-27.1 C, pH 5.8-6.5, DO 6.0-7.4 mg/L, and ammonia 0.0011-6.5 0.0047 mg/L.

Page 42 of 53 | Total Record : 524

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