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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 543 Documents
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STRUCTURE OF THE BENTHIC EPIFAUNA COMMUNITY IN MANGROVE ECOTOURISM AREA IN PANGKALAN JAMBI VILLAGE, BUKIT BATU DISTRICT, BENGKALIS REGENCY Arniati, Dina; Efriyeldi, Efriyeldi; Mubarak, Mubarak
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/

Abstract

Benthic epifauna are animals that generally live in coastal waters such as sandy/muddy beaches, coral reef ecosystems and mangrove ecosystems. The purpose of this study was to analyze the structure of the benthic epifauna community in Mangrove ecotourism, Pangkalan Jambi Village, Bukit Batu District, Bengkalis Regency. This study uses a survey method. Epifauna community structure parameters taken include species, abundance, diversity, uniformity, and dominance. The environmental parameters measured included water quality, substrate type and total organic matter content of the sediment. The number of species found was 9 species from 2 classes, namely Gastropods and Malacostraca with the most dominant species found, namely the benthic epifauna species Cerithidea quadrata. The highest abundance of benthic epifauna species Cerithidia quadrata was 1.04 Ind/m2. Based on the ANOVA test with a significant value of 0.115> 0.05, it means that the preference of the betik epifauna between stations was not significantly different.
SEDIMENT ORGANIC MATTER CONTENT AND MACROZOOBENTHOS ABUDANCE IN THE ESTUARY OF KAMBANG PESISIR SELATAN DISTRICT WEST SUMATERA Putri, Rahmi Delima; Nedi, Syahril; 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/

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.
ANALYSIS OF TYPES AND ABUNDANCE OF MICROPLLASTIC IN WATER AND SEDIMENT IN COASTAL WATERS OF PANDAN DISTRICT, CENTRAL TAPANULI REGENCY, NORTH SUMATRA Yani, Indah Novi; Siregar, Yusni Ikhwan; Amin, Bintal
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/

Abstract

This research was conducted in February 2021 in the coastal waters of Pandan District, Central Tapanuli Regency, North Sumatra Province. The purpose of this study was to analyze the type and abundance of microplastics in water and sediment and to determine the relationship between the abundance of microplastics in water and in sediment. The method used in this research is survey method which is carried out by observing and taking samples directly in the field and followed by laboratory analysis. Based on the results of the study, the highest abundance of microplastics in water was 706.67 particles/m³, and in sediments was 14,193.33 particles/kg. The abundance of microplastics in water and sediment did not differ significantly between stations. Simple linear regression test showed that the abundance of microplastics in water had a weak relationship with the abundance of microplastics in sediments.
MAPPING MARINE DEBRIS IN COASTAL AREA PADANG CITY Pradana, Hangga; Mubarak, Mubarak; Galib, Musrifin
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/

Abstract

This study aims to determine the distribution of types and masses of marine debris that has been carried out in July 2020 in the Coastal Coast of Padang City. The method used was a survey method. Sampling was carried out at 4 observation stations, namely Cinta Beach, Pasir Selahan Beach, and Air Manis Beach. The results showed that the types of marine debris found at the research site consisted of plastic, metal, glass, rubber, wood, cloth, and other types. The total amount of marine debris found was 1,316 pieces with a total weight of 22,047 kg. The most common type of marine debris found in plastic waste.
DECOMPOSITION RATE OF LITTERFALL MANGROVE Rhizophora sp. AT SUNGAI BERSEJARAH MANGROVE AREA, KAYU ARA PERMAI VILLAGE, SUNGAI APIT DISTRICT, SIAK REGENCY, RIAU PROVINCE Tania Hersa; Efriyeldi Efriyeldi; Bintal Amin
Asian Journal of Aquatic Sciences Vol 5 No 2 (2022): August 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.5.2.191-199

Abstract

This research was carried out in February 2021 in the Historic River Mangrove Tourism Area, Kayu Ara Permai Village, Sungai Apit District, Siak Regency, Riau Province. This study aims to analyze the rate of decomposition of inter mangrove litter. The method used in this study is a survey method and the determination of the sampling location by purposive sampling. The rate of decomposition of mangrove leaf litter was carried out by placing 10 g of litter in a litter bag on the mangrove forest floor in three zones for 4 weeks and taken every week as a sample. The results showed that the water quality, namely the temperature ranged from 28-30 °C, salinity 30-31‰, and pH 6.1-6.4. The results of the calculation of the rate of decomposition of mangrove leaves obtained an average of 0.25–0.11 g/day. The results of the Anova test showed that the rate of decomposition of mangrove leaf litter was higher in zone 1, which is relatively always inundated by tides and is affected by sea waves.
ANALYSIS OF COASTLINE CHANGES IN RUPAT ISLAND USING REMOTE SENSING DATA AND GEOGRAPHIC INFORMATION SYSTEMS Puspita, Devi; Mubarak, Mubarak; Nursyirwani, Nursyirwani
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/

Abstract

This study was conducted from July to August 2021 in coastal areas of Rupat Island, Riau Province. Coastal zone is an unstable area toward change, because it is a rendezvous place for land and sea, which the line is called shoreline. The purpose of this study was to determine the distance of shoreline change and to find out the landcover change in the coastal area. Method used in this study is a shoreline overlay from Landsat 5 in 1988, 1996, 2004 and Landsat 8 OLI in 2012 and 2020 and classifiation of land cover using supervised classification and Rupat Island monogram. This research showed shoreline changes between 1988 and 2020, abrasion of 106,55 hectares and accretion of 58,28 hectares. The largest land cover change was the decrease of dryland agriculture and forest area of 1530.80 hectares and 726.92 hectares. The largest addition of area occurred on the plantation that is equal to 741.02 hectares.
ANALYSIS OF COASTAL VULNERABILITY IN AGAM REGENCY, WEST SUMATRA PROVINCE Betari Erlinda Prayitno; Mubarak Mubarak; Musrifin Galib
Asian Journal of Aquatic Sciences Vol 5 No 2 (2022): August 2022
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.5.2.257-263

Abstract

Natural factors such as geomorphology, waves, tides, coastal building materials, and altitude can have an impact on marine vulnerability. Coastal vulnerability is impacted by human activities such as logging of mangrove trees, tourism object activities, and manufacturing, in addition to natural influences. This study was carried out in February 2021. The goal of this study was to calculate the rate of change of the Agam Regency coastline from 2010 to 2020, as well as to map the level of vulnerability of the Agam Regency shore. According to the findings of the study. Pesisir Subdistrict, Agam Regency is classified into five levels of vulnerability, namely very not vulnerable, not vulnerable, moderate, vulnerable and very vulnerable. Very low to high levels of vulnerability can be found along the coast of Agam Regency. The annual accretion rate ranges from 0.12 to 15.98 m. The erosion rate ranges from 0.07 to 10.21 meters per year
TOXICITY OF SEA GRASS EXTRACT (Eucheuma cottonii AND Gracillaria sp) TO LARVA Artemia salina Putra, Danil Rama; 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 Aprilivia; 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.

Page 13 of 55 | Total Record : 543

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