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All Journal Jurnal Natur Indonesia Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Jurnal Ilmu Perairan (Aquatic Science) Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Dinamisia: Jurnal Pengabdian Kepada Masyarakat Asian Journal of Aquatic Sciences Journal of Coastal and Ocean Sciences Journal of Rural and Urban Community Empowerment
Afrizal Tanjung
Fakultas Perikanan Dan Kelautan Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Physics Social Sciences Other

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Journal : Asian Journal of Aquatic Sciences

 1 
GROWTH OF Spirulina platensis IN INDOOR AND SEMI OUTDOOR CULTURING SYSTEMS Judita Grace Merry Nainggolan; Afrizal Tanjung; Irwan Effendi
Asian Journal of Aquatic Sciences Vol 1 No 1 (2018)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (502.124 KB) | DOI: 10.31258/ajoas.1.1.22-28

Abstract

Microalgae are very potential to be developed as biofuel feedstocks when compared to food crops because they have several advantages such as rapid growth, high productivity, enabling the use of freshwater and seawater, and production costs are not too high. Spirulina platensis has a high nutrient content so it is used as a health food ingredient. Once the importance of the role of nutritional value of S. platensis for humans and some marine organisms, then the right culture medium to get the maximum nutritional content needs to be studied more deeply. This study aims to determine the effect of different doses of nutrition on the density of biomass cultivation of S. platensis microalgae with indoor and semi outdoor system. This research has been conducted from April to May 2018. The method by used the experimental method. The data obtained were analyzed statistically using simple linear regression equation. The results showed that the influence in the dose of nutris media guillard, S.platensis increased with the dose of nutrients as much as 0.60 ml either indoor or semi outdoor system. As for the amount of biomass density S. platensis in the semi-outdoor system the amount of biomass density is higher than the indoor system.
ANALYSIS CONTENT OF ORGANIC MATTER IN SEDIMENT AND ABUNDANCE OF MACROZOOBENTHOS IN TELUK BUO PADANG WEST SUMATERA Rinol Putra Utama; Syahril Nedi; Afrizal Tanjung
Asian Journal of Aquatic Sciences Vol 2 No 3 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (535.459 KB) | DOI: 10.31258/ajoas.2.3.197-205

Abstract

This research was conducted in May 2018 in the waters of Teluk Buo, Padang, West Sumatra. The purpose of this study was to determine the environmental quality of the Teluk Buo waters, especially to determine the abundance of macrozoobenthos and determine the relationship between sediment organic matter and abundance of macrozoobenthos. The method used in this study is a survey method. The results of the study note that the waters of the Teluk Buo are included in the medium polluted criteria with a diversity index (H ') ranging from 2.18-3.43, dominance index (C) 0.10-0.32 and uniformity index (e) 0.51-0,78. Abundance ranges from 80-240 ind/m2 with the number of macrozoobenthos species found there are 9 species of gastropods and 5 species of bivalves. The relationship of sediment organic matter content to macrozoobenthos abundance was included in the moderate criteria with a correlation coefficient (r) -0.382.
SEDIMENT ORGANIC MATTER AND MAKROZOOBENTHOS ABUDANCE IN WATERS OF PURNAMA DUMAI Misael Gurning; Syahril Nedi; Afrizal Tanjung
Asian Journal of Aquatic Sciences Vol 2 No 3 (2019)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (738.829 KB) | DOI: 10.31258/ajoas.2.3.214-223

Abstract

This research was conducted at April 2019 in Waters of Purnama Dumai. The aim of the study was to analyze the content of organic sediment and macrozoobenthos abundance and the relationship of organic sediment with macrozoobenthos abundance. The method used was a survey method consisting of 4 stations with 3 replications at each station. Sampling was carried out in the field and then taken to the Marine Chemistry Laboratory for analysis of sediment and organic material fractions. The results showed that the average content of organic sediment material in Waters of Purnama Dumai is 66,47 % and the content of organic sediment material between different stations is not significantly different (P>0,05) while the abundance of macrozoobenthos is 32 ind/m2 and the abundance of macrozoobenthos between stations was not significantly different (P>0,05). The relationship between the organic matter content of sediments and the abundance of macrozoobenthos has a value (r) = 0,235797 which means it has a weak relationship.
THE EFFECT OF DIFFERENT FEED ON THE GROWTH RATE OF Artemia salina Kristanti; Irwan Effendi; afrizal Tanjung
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.3.1.77-83

Abstract

Artemia salina is a natural feed that is widely used in fish and shrimp hatcheries due to its good nutritional content. This research was conducted in August 2019. This study aims to determine the effect of different types of feed on the growth rate of A. salina on a laboratory scale. The method used in this study was an experimental method that uses a completely randomized design (CRD) 1 factor with 3 levels namely, cornstarch (A), wheat (B) and tapioca (C). Water parameters show that the conditions was in good condition with average temperatures ranging from 28.1 - 28.7 oC, pH 8 and with a salinity of 60 ppt. Body length of A. salina ranged from 5.33 - 82.33 mm, where the body length in level A (cornstarch) was 82.33, level B (wheat) was 54.33, level C (tapioca) was 18, 67 and the control level is 5.33. The results of the ANOVA test for body length increase of A. salina showed p<0.05, that is 0.00. The survival rate of A. salina with different feed ranges from 0.5% - 88.50%, where the survival rate in level A (cornstarch) is 88.50%, level B (wheat) is 3.17%, level C (tapioca) is worth 51.50% and Control level is worth 0.5%. Survival rate in level A (cornstarch) is quite good. Based on ANOVA test, the survival rate between levels showed p<0.05, that is 0.00.
POPULATION STRUCTURE AND REPRODUCTION OF THE RAZOR CLAMS Solen lamarckii (Chenu, 1843) IN THE INTERTIDAL ZONE OF API API VILLAGE WATERS, BENGKALIS REGENCY Rani Fahmia; Syafruddin Nasution; Afrizal Tanjung
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.3.3.271-285

Abstract

Razor clam (Solen lamarckii) is a type of pelecypoda that has high economic value on the Api api village waters, Bengkalis Regency. This research aims to study the population structure and reproduction of razor clam. The study was carried out over 2 month period from September to October 2019 at Api api village waters, Bengkalis Regency. Razor clam samples were collected by using a 1 x 1 m2 frame that laid along transect. There were 5 plots and 5 subplots along the transect as replications. The result showed, the population density of razor clams is 3.12 species/m2 in September and 2.88 species/m2 in October 2019. The distribution pattern of razor clams was uniform. While, the most common size of razor clam is the medium size category (40-60 mm) both in September and in October 2019. The average value of gonado somatic index (GSI) was 2.28-8.60%. Histological analysis indicated that maturity gonad stage of razor clam was commonly found in September is maturity gonad stage I (60%), while in October is stage III (40%) and stage IV(30%).
MACROZOOBENTHOS COMMUNITY STRUCTURE IN INTERTIDAL ZONE OF SAMBUNGO VILLAGE PESISIR SELATAN REGENCY OF WEST SUMATERA PROVINCE Bob Anggara; Afrizal Tanjung; Syafruddin Nasution
Asian Journal of Aquatic Sciences Vol 4 No 2 (2021): Agustus 2021
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.4.2.106-111

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
COMMUNITY STRUCTURE OF GASTROPODS IN THE COASTAL WATERS OF NORTH RUPAT DISTRICT Dinda Pertika; Syafruddin Nasution; Afrizal Tanjung
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.5.2.215-227

Abstract

Community structure is a concept that studies the composition or composition of species and abundance in a community. Coastal waters are areas with a depth of less than 200 meters and there is a littoral area located between the highest tide and the lowest low tide or called the intertidal area. One of the community of organisms in this intertidal area is gastropods. This research was conducted from December 2021 to January 2022. The purpose of the study was to determine the structure of the gastropod community in the coastal waters of North Rupat District consisting of species, density, diversity index, uniformity index, dominance index, distribution pattern, and community similarity. As supporting data in this study, several environmental parameters were also measured which included water quality, sediment type and sediment organic matter content. The research method used is a survey method, where sampling using the quadrant transect method is carried out at 3 stations. Based on the results of the study found 14 species of gastropods. The species that were found in all stations were Indothais gradata. Gastropod density is 15.800 ind/ha. Diversity index value (H') 1.85, uniformity index (E) 0.70, dominance index (C) 0.24, distribution pattern (Id) 3.24 is clustered, species similarity index (Ss) between stations Tanjung Medang and Teluk Rhu 83% of species are almost the same and between stations Tanjung Medang and Tanjung Punak 15% and between stations Teluk Rhu and Tanjung Punak 17% are not the same. Water quality parameters as follows: temperature 27-28oC; salinity 30-31 ppt; pH 6-7. Sediment organic matter 0.50-2.28%, sand sediment type
BIVALVE COMMUNITY STRUCTURE IN THE INTERTIDAL ZONE OF PASUMPAHAN ISLAND PADANG CITY WEST SUMATERA PROVINCE Rahma Zani; Afrizal Tanjung; Elizal Elizal
Asian Journal of Aquatic Sciences Vol 6 No 2 (2023): August
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.6.2.168-173

Abstract

Bivalvia is a class of the Mollusca phylum. Bivalvia is also known as Pelecypoda and Lamellibrankhiata. Bivalvia occupies an area of the intertidal zone, one of which is in the intertidal zone of Pasumpahan Island. But information about bivalves in the area does not exist. To know/understand information about the density and distribution pattern of bivalves on Pasumpahan Island, this research was conducted in January 2022. The sampling area was in the intertidal zone of Pasumpahan Island. Sampling was carried out at three stations, each station was divided into three transects. Bivalve sampling was carried out using a 1 x 1mm sieve. The movement of bivalves to the gravel substrate is very fast to avoid splashing waves. Bivalves samples were then identified. The density of bivalves in the intertidal zone of Pasumpahan Island ranged from 1.78-3.56 Ind/m2. Station 2 has a higher density of bivalves, namely 3.56 Ind/m2, the calculation of bivalves in the intertidal zone of Pasumpahan Island obtained bivalves distribution pattern data in groups
MACROZOOBENTHOS COMMUNITY STRUCTURE IN SETAN ISLAND, MANDEH TOURISM AREA, PESISIR SELATAN, WEST SUMATRA Muhammad Al-Izhar; Afrizal Tanjung; Elizal Elizal
Asian Journal of Aquatic Sciences Vol 6 No 2 (2023): August
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.6.2.174-179

Abstract

Macrozoobenthos are aquatic organisms that live on the bottom of the water. Macrozoobenthos can be tolerant or sensitive to environmental changes. Organisms that live relatively sedentary and have varying adaptability to environmental conditions. However, there is no information about macrozoobenthos on Setan Island in Mandeh Tourism Area. To know/understand information about the density and distribution patterns of macrozoobenthos on Setan Island, this study was conducted in January 2022. The sampling area is in the intertidal zone of Setan Island. Sampling was conducted at three stations, each station was divided into three transects. Macrozoobenthos sampling was done using a sieve measuring 1mm x 1mm. The movement of macrozoobenthos to the gravel substrate was relatively slow to avoid the waves. Macrozoobenthos samples were then identified. The density of macrozoobenthos on Setan Island ranged from 2.89-3.89 ind/m2. Station 2 has a higher macrozoobenthos density of 3.89 Ind/m2, the calculation of macrozoobenthos on Setan Island obtained data on the distribution pattern of macrozoobenthos in clusters
Co-Authors ', Intan ', Rifardi Abdurrahman, M. Adelia Mustofa Adila, Melin Albertus Andika Mendrofa Aldo Fernando Alifia Al Rahma Aras Mulyadi Aras Mulyadi Aras Mulyadi Ardiken Afri Sulistio Asma Ul Husna Putri Azyarah Afrilianti Bella Permata Zevira Bella Yosefa Bisma Panca Winata Bob Anggara Bona Juandi Cahya Sumantri Chindi Fitrimeutia Cici Lestari Manurung Deddy Bahagia Manik DEDI SETIAWAN Dessy Yoswaty Dewi Sujani Adithiya Dian Seftiani Putri Dimas Agung Guntara Dinda Pertika Dodik Febriyantoro, Dodik Dony Ingot Panjaitan Efriyeldi, Efriyeldi Eka Saputra Elizal Elizal Elizal, Elizal Elvi Hartati Anggraini F, Feliatra Fadila Arsyad fajar sidik Fajri, Ferli Farid Ramadan Ferdi Fajri Fiolla Aprilisty Firmansyah Firmansyah Giovano Aldizia Harif, Ichwanul Harpani Harpani Henni Syawal, Henni Syawal Ide Rival Dianta Sitepu Ilbi Candra Yani Ilcia Teshi Diafana Ilham Apriandi Irvan Dwi Putra Irvina Nurrachmi Irwan Effendi Isma, Muhammad Fauzan Isyatis Saadah Ivyna Clarisa Tampubolon Jaya Adi Kusuma Jean Fattikawa Siahaan, Jean Fattikawa Jeprin Hasibuan Joko Samiaji Judita Grace Merry Nainggolan Juliando Saputra Jung jung Maranata Junika Cecelia Putri Kaprisal, Kaprisal Khaidir Khaidir Kristanti Lola Feby Yanti Manalu, Lili Yanti Mardiono Rajagukguk Marya Ulfa Mayang Shintana, Mayang Melly Gusfi Mhd. Fadhillah, Mhd. Fadhillah Mirna Kumala Sari Dalimunthe Misael Gurning Mohd. Isfan Fadhil Mubarok, Ihsan Dwi Muhammad Al-Izhar Muhammad Luthfi Musrifin Ghalib Nico Rahmadany Novhitasari Simbolon Nur Sahira Nuraini Nuraini Nurul Amanda Faida Prayoga Arliansyah Putra, Jefri Eliyas Rafi Novendri Kaslan Rahma Zani Rahmania Putri Randa Pratama Zulfa Rani Fahmia Ranti Wulandari Rifardi Rifardi Rifardi Rifardi, Rifardi Rinol Putra Utama Rio Syahputra Riska Febriani Rivilgo, Wawan Romanta A. Tamba Romanta Andrianus Tamba Ronaldy Saputra Simamora, Ronaldy Saputra Rosanti Dina Raya Rosyidin, Hidayatul Rusadi, M Dio Eigmar Sastrawan Barus Satria Putra Anggara Setiawan, Ilham Sherina Br Limbong Sibarani, Rosari Siburian, Hendra Yosep Simanjuntak, Naomi Sinaga, Andri Decshana Sitompul, Krivide Sofyan Husein Siregar Sri Wira Rahayu Ningsih Syafruddin Nasution Syafruddin Syafruddin Syahril Nedi Syahrul Nedi, Syahrul Thamrin Thamrin Thamrin Thamrin Tulus Gandra Saputra Silaban Uci Kurnia Putri Vani Oktavia Siahaan Victor Simanungkalit Vonny Aprilia Siregar Yusni Ikhwan Yusni Ikhwan Siregar Zulkifli &#039; Zulkifli Zulkifli Zulpikar &#039;