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Asian Journal of Aquatic Sciences

ajoas
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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).

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Articles 10 Documents

Search results for , issue "Vol 2 No 1 (2019)" : 10 Documents clear

ANALYSIS CONCENTRATION OF NITRATE, PHOSPHATE, SILICATE AND RELATIONSHIP WITH DIATOM ABUDANCE IN WATERS TANJUNG TIRAM DISTRCTS BATU BARA REGENCY OF NORTH SUMATERA PROVINCE Hidayat, Rahmad; Nedi, Syahril; Nurachmi, irvina
Asian Journal of Aquatic Sciences Vol 2 No 1 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Input of nutrients into the waters from various human activities (residential, agriculture 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 Tanjung Tiram 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 0,0819 â€“ 0,1167 mg/l, the phosphate concentration ranged from 0,1002 â€“ 0,1526 mg/l, and silicate concentration ranged from 0,04447 â€“ 0,5418 mg/l. The abundance of diatoms in Tanjung Tiram waters ranged from 156,9 â€“ 302,8 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 = 350,906 â€“ 58,065Nitrateâ€“ 2644,624phosphate+ 440,363Silicate. This statement explains the concentration of nitrate, phosphate related negative (-) to the abundance of diatoms and silicate positive (+) related to the abundance of diatom. This condition shows that the nutrient concentration in these waters is relatively high so that it affects the abundance of diatoms.

STANDING STOK IKAN PAWEH (Osteochillus hasselti) dan KONDISI LINGKUNGAN DANAU LUBUK SIAM DESA LUBUK SIAM KECAMATAN SIAK HULU PROVINSI RIAU Widya Iswara, Anggi; Fauzi, Muhammad; El Fajri, Nur
Asian Journal of Aquatic Sciences Vol 2 No 1 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Osteochillus hasselti was commonly inhabit the Lubuk Siam Lake. A research aims to understand the standing stock of O. hasselti in that lake was conducted in July to August 2018. The fish was sampled everyday for 10 days in July and 10 days in August, in 3 sampling points (in the inlet area, in the middle of the lake, and the outlet) using gill nets. The standing stock was analyzed using Leslie method. Results shown that the initial population (No) of the fish was 315 kg and the final population (Nt) was 301 kg and the exploitation level was 8%. The water quality parameter shown that temperature was 27-28oc, clarity 6395 cm, pH = 6 and dissolved oxygen was 5.32â€“5.40 mg/L. Data obtained indicate the water quality in the Lubuk Siam Lake is good and it is able to support the life of O. hasselti.

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)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

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)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

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 Rachmadani Rambe, Sakinah; Nurachmi, irvina; Nedi, Syahril
Asian Journal of Aquatic Sciences Vol 2 No 1 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

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; sumarsih, eni
Asian Journal of Aquatic Sciences Vol 2 No 1 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

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; Efawani, Efawani; Eddiwan, Eddiwan
Asian Journal of Aquatic Sciences Vol 2 No 1 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

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 lenghweight 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; sumarsih, eni; El Fajri, Nur
Asian Journal of Aquatic Sciences Vol 2 No 1 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

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) Mariode Triputra Purba, Thadeus; effendi, irwan; Feliatra, Feliatra
Asian Journal of Aquatic Sciences Vol 2 No 1 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

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)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

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.

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Nur Arifin

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arifinik013@gmail.com

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+6282381530516

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ajoas@ejournal.unri.ac.id

Editorial Address
Gedung LPPM Universitas Riau, Kampus Bina Widya, Jl. H.R. Soebrantas Km 12.5, Panam. Pekanbaru, Riau - 28293. Indonesia

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Riau

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Nur Arifin

Contact Email arifinik013@gmail.com

Phone +6282381530516

Journal Mail Official ajoas@ejournal.unri.ac.id

Editorial Address Gedung LPPM Universitas Riau, Kampus Bina Widya, Jl. H.R. Soebrantas Km 12.5, Panam. Pekanbaru, Riau - 28293. Indonesia

Location Kota pekanbaru, Riau INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Nur Arifin

Contact Email
arifinik013@gmail.com

Phone
+6282381530516

Journal Mail Official
ajoas@ejournal.unri.ac.id

Editorial Address
Gedung LPPM Universitas Riau, Kampus Bina Widya, Jl. H.R. Soebrantas Km 12.5, Panam. Pekanbaru, Riau - 28293. Indonesia

Location
Kota pekanbaru,

Riau

INDONESIA