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All Journal AQUATIC SCIENCE & MANAGEMENT JFMR (Journal of Fisheries and Marine Research) Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Aquaculture Indonesia Prawara Jurnal Pengabdian Masyarakat
Valina, Rahmi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Public Health Social Sciences Veterinary

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Macroalgae community structure on Kumeke Island, East Bolaang Mongondow Regency, North Sulawesi Province, Indonesia Valina, Rahmi; Asthisa, Dias; Pangalila, Novelia M.A.; Timumu, Farhan A.; Kasim, Fitra M.A.
AQUATIC SCIENCE & MANAGEMENT Vol. 12 No. 2 (2024): OCTOBER
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.v12i2.58391

Abstract

Macroalgae is one of the potential biological resources in Indonesian waters that has many important roles, from an ecological to an economic perspective. The aim of this research is to analyse the structure of macroalgae communities found in the waters of Kumeke Island, East Bolaang Mongondow Regency, Indonesia. The method used in this research is a survey with descriptive data analysis. Determining the sampling station point is carried out by purposive sampling, namely by selecting an area based on the presence of macroalgae. Macroalgae sampling used the line transect method with a quadratic sampling technique with a size of 1.5 x 1.5 m. The research results showed that the types of macroalgae found were 11 species, consisting of 3 species of Chlorophyta, 4 species of Phaeophyta, and 4 species of Rhodophyta. The density of macroalgae species is dominated by Rhodophyta (38%), Phaeophyta (31%), and Chlorophyta (30%). The total density of macroalgae is 9–46 ind/m². The diversity index ranges from 1.154 to 2.234 in the medium category, the uniformity index ranges from 0.481 to 0.932 in the high category, and the dominance index ranges from 0.114 to 0.338 in the low category.
Assessment of the pollution status of the coastal waters of Kotabunan Village, East Bolaang Mongondow Regency (North Sulawesi Province, Indonesia) using the pollution index (IP) Asthisa, Dias; Valina, Rahmi; Musada, Zulkarnain; Ilahude, Satrio; Lesi, Inka
AQUATIC SCIENCE & MANAGEMENT Vol. 12 No. 2 (2024): OCTOBER
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.v12i2.58395

Abstract

This study aims to assess the pollution status of the coastal waters of Kotabunan Village, East Bolaang Mongondow Regency, North Sulawesi Province, Indonesia, using the pollution index (PI). The water quality parameters monitored include temperature, Total Dissolved Solid (TDS), pH, Dissolved Oxygen (DO), and salinity. Analysis of water quality data was compared with class III water quality standards based on Government Regulation Number 22 of 2021. The results of the water quality analysis showed that the temperature ranged from 28.4 - 31.5 0C, TDS ranged from 2100 - 3120 mg/L, pH ranged from 7.93 - 8.24, DO ranged from 2.8 - 6.2 mg/L, and salinity ranged from 18.5 - 34 ppt. Based on these facts, the pollution index of these waters is 2.4 - 6.2 which indicates a light-moderate pollution status.
Perbandingan Efisiensi Energi Sistem Aerasi Dan Sirkulasi Air Pada Budidaya Skala Kecil Dengan Kondisi Oksigen Terlarut Awal Berbeda Pramudia, Zulkisam; Valina, Rahmi; Fadjar, Mohamad; Rangkuti, Rizky Fadilla Agustin; Kurniawan, Andi
Jurnal Aquaculture Indonesia Vol 4, No 2 (2025)
Publisher : Prodi Akuakultur Fakultas Perikanan Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/jai.v4i2.6757

Abstract

Efisiensi sistem aerasi menjadi aspek krusial dalam budidaya perikanan skala kecil, terutama untuk menjaga kadar oksigen terlarut atau Dissolved Oxygen (DO) tetap optimal. Penelitian ini bertujuan membandingkan performa dan efisiensi energi aerator diffuser dan pompa sirkulasi dalam meningkatkan DO pada kolam fiber 1000 L selama 24 jam, dengan kondisi DO awal rendah. Dua perlakuan (P1: aerator diffuser dan P2: pompa sirkulasi) masing-masing diulang tiga kali, serta satu kontrol tanpa perlakuan. Hasil pengukuran DO dianalisis menggunakan ANOVA satu arah dengan uji lanjut BNT. Hasil menunjukkan bahwa terdapat perbedaan yang signifikan (p < 0,05) antar perlakuan. Aerator diffuser (ΔDO = 3,50 mg/L) memberikan peningkatan DO tertinggi dan efisiensi energi 4,17 mg/L per kWh, lebih baik dibanding pompa sirkulasi (ΔDO = 2,70 mg/L; 3,21 mg/L per kWh). Kontrol menunjukkan penurunan DO alami sebesar 0,72 mg/L. Temuan ini menunjukkan bahwa aerator diffuser lebih efektif dan efisien secara energi dalam meningkatkan DO, serta lebih cocok diterapkan pada unit budidaya skala kecil
Sosialisasi Potensi Kolong Bekas Tambang Timah Untuk Budidaya Ikan Di Desa Tepus, Bangka Selatan Kurniawan, Ardiansyah; Elgifienda, Tiara; K, Dian Fitri; Saputra, Farhan Afif; Vautrin, Hernandez Kendrick; Valina, Rahmi; Pratama, Ricky Hadi; Riswandi, Agung; Mahendra, Nadhiva; Gunawan, Gunawan
PRAWARA Jurnal ABDIMAS Vol 4 No 3 (2025): PRAWARA JURNAL ABDIMAS
Publisher : CV. Manha Digital

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Desa Tepus merupakan salah satu desa di Bangka Belitung yang memiliki banyak kolong namun belum termanfaatkan secara optimal. Kolong tersebut sebenarnya memiliki potensi yang besar untuk dimanfaatkan kembali, terutama di sektor perikanan. Minimnya pengetahuan dan keterampilan mengenai budidaya ikan di kolong menjadi salah satu faktor yang menghambat pemanfaatan potensi tersebut. Oleh karena itu, diperlukan upaya edukatif melalui kegiatan sosialisasi untuk mengenalkan manfaat dan teknik budidaya ikan di kolong secara tepat guna. Kegiatan pengabdian kepada masyarakat ini dilaksanakan dalam bentuk sosialisasi yang bersifat partisipatif dan melibatkan secara langsung warga dusun serta perangkat desa. Sosialisasi secara lisan terkait potensi kolong untuk budidaya ikan dihadiri warga dan perangkat pemerintahan desa. Materi dari hasil penelitian bahwa sebagian kolong di Desa Tepus termasuk kategori tercemar ringan dan memiliki potensi untuk dikembangkan budidaya ikan. Antusiasme dan keterlibatan aktif masyarakat menunjukkan adanya kesadaran kolektif akan pentingnya pemanfaatan lahan pasca-tambang secara produktif dan berkelanjutan. Program sosialisasi ini diharapkan menjadi langkah awal yang mendorong masyarakat untuk mulai melakukan praktik budidaya secara mandiri dan berkelanjutan, serta menjadi dasar bagi kegiatan pendampingan dan pelatihan lanjutan di masa mendatang.
DETERMINATION OF WATER QUALITY STATUS BASED ON HEAVY METAL CONTENTS IN THE RAINY AND DRY SEASON USING THE STORET INDEX IN PASURUAN SEA WATERS, EAST JAVA Herawati, Endang Yuli; Arfiati, Diana; Samuel, Pratama Diffi; Dina, Karina Farkha; Anugerah, Putri; Valina, Rahmi
JFMR (Journal of Fisheries and Marine Research) Vol. 5 No. 2 (2021): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2021.005.02.3

Abstract

Waters that are presumably contaminated with heavy metals need to be observed to ensure the level of pollution to perform water restoration. This study was aimed to determine the status of water quality based on heavy metal contents. The survey method was employed in this study, and it was conducted in Pasuruan sea waters in different seasons; September 2019 represented the dry season, and April 2020 represented the rainy season. The water sampling stations were chosen by using purposive sampling in three sampling locations: the sea waters of Kraton, Lekok, and Nguling districts. The heavy metals and water quality parameters were analyzed by using Storet Index. The results indicated that the highest level of heavy metals was found in Lekok waters in September, consisting of Hg (1.22 mg/l), Cd (1.20 mg/l), and Pb (0.55 mg / l). The seawater of Nguling district had the lowest content in April, while Kraton's seawater was moderate. The water quality status based on the Storet Index suggested that the sea waters of Kraton, Lekok, and Nguling districts were classified as moderately polluted with a score of -16 to -24. The highest score was in September in the rainy season with a score of -24 and the score in April in the dry season was -16. It means that the score is increasing but still in the moderately polluted category. The measurement results of temperature, pH, dissolved oxygen, salinity, and current velocity were in optimum results for aquatic organisms in the dry season or the rainy season. Regarding the water quality status in Pasuruan sea waters, it can be concluded that the heavy metal contents exceeded the quality standard set by the government. Therefore, improved management is required to prevent the deterioration of the pollution status in Pasuruan sea waters
Analysis of Kidney Tissue Keting Mystus gulio (Hamilton, 1822) in Gembong and Rejoso River, Pasuruan, Indonesia Lestariaji, Chandika; Herawati, Endang Yuli; Arfiati, Diana; Djaduk, Saddam Langkung; Ristianadewi, Priska; Anjasmara, Aang Setyawan; Valina, Rahmi
Jurnal Penelitian Pendidikan IPA Vol 10 No 12 (2024): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i12.7418

Abstract

Mystus gulio is a local fish that can open up opportunities for the community. Pollution causes water quality to decrease. Fish are an important indicator in the aquatic environment, Histological analysis can be said to have a function as a natural biological sign to determine the health condition of fish which can be seen from changes in tissue structure in organs exposed to pollutants. Organs that’s vulnerable to water pollution is kidneys.  Kidney tissue is susceptible to damage because kidneys function as a means of filtration and excretion, The method used in this research is descriptive method. Fish were caught from river than dissected to remove the kidneys for histopathological analysis using the HE method, analyzed using the scoring method. The results obtained in both rivers were that fish kidneys caught in the Gembong River were categorized as moderately damaged, while fish kidneys caught from the Rejoso River were categorized as lightly damaged. This is in line with the results of the heavy metal lead from both rivers. Where the yield of lead in fish kidneys caught from the Gembong is on average higher than the yield from fish kidneys caught from the Rejoso.
Growth Pattern and Morphometric Characteristics of Keting Mystus gulio (Hamilton, 1822) in Downstream of Gembong and Rejoso River, Pasuruan, Indonesia Lestariaji, Chandika; Herawati, Endang Yuli; Arfiati, Diana; Djaduk, Saddam Langkung; Ristianadewi, Priska; Anjasmara, Aang Setyawan; Valina, Rahmi
Jurnal Penelitian Pendidikan IPA Vol 11 No 1 (2025): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i1.10175

Abstract

Keting fish is a type of fish from freshwater which is usually used as a consumption fish or ornamental fish. There is a type of kein, namely from the species Mystus gulio (Hamilton, 1922). Mystus gulio ecosystem is disturbed due to land-use change activities in the river which causes the disturbance of the habitat of Mystus gulio. The purpose of this study is to analyze the long-weight relationship, growth pattern, and condition factors of Mystus gulio in downstream Gembong and  Rejoso River. The method used in this study is to sample Mystus gulio from 3 stations on each river based on land use criteria. The research was carried out for 3 months, namely August, September and October 2023. The results of this study show that Mystus gulio caught in these two rivers all have a negative allometric growth pattern (b<3). The average value of the condition factor in these two rivers is 1 which indicates that the condition of Mystus gulio is good. The average growth of Mystus gulio caught in Gembong is relatively larger than Rejoso. The waters quality results of Gembong and Rejoso are still in optimal condition, except for Total Suspended Solid and Lead (Pb).
Co-Authors Andi Kurniawan Anjasmara, Aang Setyawan Anugerah, Putri Ardiansyah Kurniawan Asthisa, Dias Diana Arfiati Dina, Karina Farkha Djaduk, Saddam Langkung Endang Yuli Herawati Gunawan Gunawan Ilahude, Satrio K, Dian Fitri Kasim, Fitra M.A. Lesi, Inka Lestariaji, Chandika Mahendra, Nadhiva MOHAMAD FADJAR Pangalila, Novelia M.A. Pramudia, Zulkisam Pratama, Ricky Hadi Rangkuti, Rizky Fadilla Agustin Ristianadewi, Priska Riswandi, Agung Samuel, Pratama Diffi Saputra, Farhan Afif Tiara Elgifienda Timumu, Farhan A. Vautrin, Hernandez Kendrick