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The Dynamics and Water Quality Status of a Tropical Coastal Lake in Anak Laut Lake, Singkil Indonesia Leidonald, Rusdi; Muhtadi, Ahmad Muhtadi; Susetya, Ipanna Enggar; Dewinta, Astrid Fauzia; Hasibuan, Julia Syahriani; Simamora, Lauran F.M.; Saville, Ramadhona
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 3 (2024): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.29.3.329-339

Anak Laut Lake a tropical coastal lake in Singkil, Aceh Province, is directly connected to the Indian Ocean on the northwestern part of Sumatra Island. The existence of oil palm plantations in the northern part of Lake Anak Laut has the potential to pollute the lake waters. Therefore, this research aims to determine the dynamics of water quality which is influenced by the tidal cycle and the level of pollution of Lake Anak Laut. This research was conducted on March and April 2023. Water sampling was conducted in four (4) times, following the tidal cycle, namely new month, first quarter, full moon, and last quarter. The sampling was also carried out at high and low tides. The method for determining water pollution is the Canadian Council of Ministers of the Environment (CCME) and Pollution Index Method (PI). The results of the research show that the current and water level of Anak Laut Lake varies according to the tidal cycle, so the water quality fluctuates greatly following the tidal cycle. The concentration of organic matter and nutrients as well as Total Coliform showed higher in the last quarter phase where the water entering the lake was very low. The high level of organic matter is caused by 'waste' from palm oil plantation activities located north of Anak Laut Lake. The water quality status of Anak Laut Lake is categorized as marginal-poor based on CCME (score 42-66) and moderate based on PI (score 5-8). In general, water quality conditions are "better" at high tide (new month and full moon) than at low tide (first quarter and last quarter).

Utilization Study of Halimeda macroloba Extract as Natural Preservative Materials in Cakalang Fish Meat (Katsuwonus pelamis) Dewinta, Astrid Fauzia; Hutajulu, Valencia; Siregar, Rizky Febriansyah; Yusni, Eri
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 2 No. 1 (2023): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v2i1.11297

The purpose of this study was to characterize the secondary metabolites in Halimeda macroloba by means of phytochemical screening tests, and to determine the use of the best concentration of Halimeda macroloba extract to maintain the freshness quality of skipjack tuna physically, chemically and microbiologically. The results of the phytochemical screening test showed that the green macroalgae Halimeda macroloba contains alkaloids, steroids and triterpenoids, saponins, flavanoids, tannins and glucosides. The organoleptic physical test results for the best parameters of meat appearance, aroma and texture were in the A5 concentration treatment (600 ppm) with a value of 8.43, then the chemical test results found that the best protein content and TVB values â€‹â€‹were found in treatment A5 (600 ppm) with a value of 22.9% and in the A4 treatment (400 ppm) with a value of 9.24 mgN/100g. Meanwhile, the microbiological test results showed that the best TPC value was found in treatment A5 (600 ppm) with a value of 0.5Ã—105 col/gram.

Optimalisasi Faktor Produksi dari Upaya Penangkapan Ikan Selar Kuning (Selaroides leptolepis) di Pelabuhan Perikanan Samudera (PPS) Belawan, Sumatera Utara Fadhilah, Amanatul; Medinah, Rr Noor Umamah; Dewinta, Astrid Fauzia; Hasibuan, Julia Syahriani
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 3 No. 1 (2024): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v3i1.12831

Salah satu Hasil perikanan di Pelabuhan Perikanan Samudera Belawan adalah Ikan (Selaroides leptolepis). Ikan Selar Kuning (Selaroides leptolepis) merupakan jenis ikan konsumsi yang memiliki nilai ekonomi tinggi dan banyak diminati serta dimanfaatkan oleh masyarakat dan ditangkap dengan alat tangkap purse seine. Penelitian ini bertujuan untuk untuk mengidentifikasi faktor produksi dan untuk mengetahui pengaruh terbaik pada faktor produksi penangkapan Ikan Selar Kuning (Selaroides leptolepis) di Pelabuhan Perikanan Samudera Belawan. Metode penelitian yang digunakan adalah metode deskriptif dengan jumlah sampel sebanyak 65 nelayan kapal purse seine yang ditentukan dengan teknik purposive sampling. Teknik analisis data dengan menggunakan analisis nilai CPUE dan analisis regresi linier berganda. Hasil penelitian disimpulkan bahwa (1) Nilai CPUE (hasil tangkapan per upaya penangkapan) Ikan Selar Kuning yang didaratkan di Pelabuhan Perikanan Samudera Belawan selama periode 5 tahun (2018-2022) menunjukkan penurunan dan peningkatan yang fluktuatif. (2) Faktor produksi yang berpengaruh yaitu ukuran kapal, daya mesin dan jumlah trip. Sementara faktor jumlah bahan bakar dan pengalaman nelayan tidak berpengaruh signifikan.

Utilization Study of Halimeda macroloba Extract as Natural Preservative Materials in Cakalang Fish Meat (Katsuwonus pelamis) Dewinta, Astrid Fauzia; Hutajulu, Valencia; Siregar, Rizky Febriansyah; Yusni, Eri
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 2 No. 1 (2023): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v2i1.11297

The purpose of this study was to characterize the secondary metabolites in Halimeda macroloba by means of phytochemical screening tests, and to determine the use of the best concentration of Halimeda macroloba extract to maintain the freshness quality of skipjack tuna physically, chemically and microbiologically. The results of the phytochemical screening test showed that the green macroalgae Halimeda macroloba contains alkaloids, steroids and triterpenoids, saponins, flavanoids, tannins and glucosides. The organoleptic physical test results for the best parameters of meat appearance, aroma and texture were in the A5 concentration treatment (600 ppm) with a value of 8.43, then the chemical test results found that the best protein content and TVB values â€‹â€‹were found in treatment A5 (600 ppm) with a value of 22.9% and in the A4 treatment (400 ppm) with a value of 9.24 mgN/100g. Meanwhile, the microbiological test results showed that the best TPC value was found in treatment A5 (600 ppm) with a value of 0.5Ã—105 col/gram.

Optimalisasi Faktor Produksi dari Upaya Penangkapan Ikan Selar Kuning (Selaroides leptolepis) di Pelabuhan Perikanan Samudera (PPS) Belawan, Sumatera Utara Fadhilah, Amanatul; Medinah, Rr Noor Umamah; Dewinta, Astrid Fauzia; Hasibuan, Julia Syahriani
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 3 No. 1 (2024): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v3i1.12831

Salah satu Hasil perikanan di Pelabuhan Perikanan Samudera Belawan adalah Ikan (Selaroides leptolepis). Ikan Selar Kuning (Selaroides leptolepis) merupakan jenis ikan konsumsi yang memiliki nilai ekonomi tinggi dan banyak diminati serta dimanfaatkan oleh masyarakat dan ditangkap dengan alat tangkap purse seine. Penelitian ini bertujuan untuk untuk mengidentifikasi faktor produksi dan untuk mengetahui pengaruh terbaik pada faktor produksi penangkapan Ikan Selar Kuning (Selaroides leptolepis) di Pelabuhan Perikanan Samudera Belawan. Metode penelitian yang digunakan adalah metode deskriptif dengan jumlah sampel sebanyak 65 nelayan kapal purse seine yang ditentukan dengan teknik purposive sampling. Teknik analisis data dengan menggunakan analisis nilai CPUE dan analisis regresi linier berganda. Hasil penelitian disimpulkan bahwa (1) Nilai CPUE (hasil tangkapan per upaya penangkapan) Ikan Selar Kuning yang didaratkan di Pelabuhan Perikanan Samudera Belawan selama periode 5 tahun (2018-2022) menunjukkan penurunan dan peningkatan yang fluktuatif. (2) Faktor produksi yang berpengaruh yaitu ukuran kapal, daya mesin dan jumlah trip. Sementara faktor jumlah bahan bakar dan pengalaman nelayan tidak berpengaruh signifikan.

Types and Abundance of Microplastics in the Digestive Tract of Cucumbers in Banyak Island, Aceh Singkil Lianda, Desi; Suriani, Mai; Kusumawati, Ika; Lubis, Friyuanita; Dewinta, Astrid Fauzia
Journal of Coastal and Ocean Sciences Vol. 5 No. 2 (2024): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.2.81-85

Banyak Island is an island located in Aceh province, precisely in Aceh Singkil district. The people of Banyak Island often consume food whose packaging is made of plastic, and then it ends up in the sea. Island community waste thrown into the sea will enter and potentially pollute the marine ecosystem and the biota within it. This research aims to identify the type of composition and abundance of microplastics found in the digestive tract of sea cucumbers on Banyak Island, Aceh Singkil, in terms of the shape and abundance of microplastics. The method used in this research is a descriptive analysis method, which is based on photos taken with a microscope. Based on the research results, the species composition ranged from 50-114 particles/g, and the abundance of microplastics obtained was 0.2-11.4 particles/g. It was dominated by microplastic pellets, fibers, and films, with the pellet type being the first. Judging from the large amount of microplastic content found in the digestive tract of sea cucumbers on Banyak Island, Aceh Singkil, they can be categorized into types of sea cucumbers that are still suitable for consumption and sale, but if done continuously, can trigger the growth of if done frequently and over a long period, it will cause adverse effects for humans who consume it

VARIABILITY ANALYSIS OF CHLOROPHYLL-A DISTRIBUTION ON THE COAST OF SOUTHWEST ACEH USING AQUA MODIS IMAGE Suriani, Mai; Rahmi, Mira Mauliza; Kusumawati, Ika; Islama, Dini; Dewinta, Astrid Fauzia; Heriansyah, Heriansyah
Asian Journal of Aquatic Sciences Vol. 5 No. 2 (2022): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

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

Chlorophyll-a has an important role in determining the trophic status and estimation of the fertility level of waters. The aim of this study was to analyze the variability of the concentration of chlorophyll-a on the coast of Southwest Aceh. This study uses remote sensing technology using Aqua MODIS imagery, the image used is an annual Level 3 Standard Mapped Image (SMI) chlorophyll-a image with a period of 7 years from 2015 to 2021 and has a spatial resolution of 4 km. The image is processed using software, namely SeaDAS and ArcMap. The results of this study showed that the distribution of the highest annual chlorophyll-a concentration was in 2019 at 0.29 – 2.27 mg/m3, and the lowest chlorophyll-a concentration was found in 2020 ranging from 0.29 – 1.02 mg/m3. The average concentration of chlorophyll-a in Southwest Aceh waters for 7 years (2015-2021) shows a low chlorophyll-a concentration ranging from 0.29 to 1.22 mg/m3 and belongs to oligotrophic and mesotrophic waters.

Morphometric and Bathymetric Characteristics and Trophic Status of Silosung Lake, Lintong Nihuta District, Humbang Hasundutan Regency, North Sumatra Province Muhtadi, Ahmad; Silaban, Matthew Federich Willyam; Leidonald, Rusdi; Dewinta, Astrid Fauzia
Indonesian Journal of Agricultural Research Vol. 7 No. 3 (2024): InJAR, Vol. 7, No. 3, November 2024
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/injar.v7i3.15715

Lakes can form naturally through natural events or artificially through human activities. Silosung Lake is a natural lake in Siponjot Village, Lintong Nihuta District, Humbang Hasundutan Regency. Lake morphometry refers to the physical characteristics of the lake body, while bathymetry refers to the measurement and mapping of the topographic conditions of the lake bottom. It is essential to know the morphometric and bathymetric characteristics and trophic status of the lake to achieve sustainable lake management. This study aims to determine the characteristics of bathymetry, morphometry, and tropic status of Lake Silosung. This research was conducted in July 2023. The data collection in this study includes lake perimeter data, lake depth data, lake length and width data, and lake water quality data. This research indicates that Silosung Lake has an area of 104,806.6 mÂ² with a lake perimeter length of 1,573.5 m, a maximum length of 474.53 m, and a maximum width of 420.62 m. The maximum depth is 17 m, the average depth is 10.09 m, the relative depth is 7.9% with an average slope of 15.9%, the compensation depth is 4.32 m, and the Shoreline Development Index (SDI) value is 2.74. The Morpho Edapic Index (MEI) value is 2.88. Silosung Lake has a lake water volume of 1,057,108.6 mÂ³. The average Tropic State Index (TSI) value is 15.71, indicating that the trophic status of Silosung Lake is oligotrophic, meaning its productivity is low.

Types and Abundance of Microplastics in the Digestive Tract of Cucumbers in Banyak Island, Aceh Singkil Lianda, Desi; Suriani, Mai; Kusumawati, Ika; Lubis, Friyuanita; Dewinta, Astrid Fauzia
Journal of Coastal and Ocean Sciences Vol. 5 No. 2 (2024): May
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.5.2.81-85

Banyak Island is an island located in Aceh province, precisely in Aceh Singkil district. The people of Banyak Island often consume food whose packaging is made of plastic, and then it ends up in the sea. Island community waste thrown into the sea will enter and potentially pollute the marine ecosystem and the biota within it. This research aims to identify the type of composition and abundance of microplastics found in the digestive tract of sea cucumbers on Banyak Island, Aceh Singkil, in terms of the shape and abundance of microplastics. The method used in this research is a descriptive analysis method, which is based on photos taken with a microscope. Based on the research results, the species composition ranged from 50-114 particles/g, and the abundance of microplastics obtained was 0.2-11.4 particles/g. It was dominated by microplastic pellets, fibers, and films, with the pellet type being the first. Judging from the large amount of microplastic content found in the digestive tract of sea cucumbers on Banyak Island, Aceh Singkil, they can be categorized into types of sea cucumbers that are still suitable for consumption and sale, but if done continuously, can trigger the growth of if done frequently and over a long period, it will cause adverse effects for humans who consume it

Community empowerment through making maroca (mangrove root craft) in village Tanjung Rejo, Kecamatan Percut Sei Tuan, Sumatera Utara Enggar Susetya, Ipanna; Dewinta, Astrid Fauzia; Rambey, Ridahati; Sudiati, Sudiati; Azhari, Azhari; Suriani, Mai
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Mangrove ecosystems in Tanjung Rejo Village, Percut Sei Tuan Sub-district, Deli Serdang experienced a lot of land conversion in the form of residential, agricultural and plantation lands. This causes abrasion in this region because there is no protection from waves and sea waves in this region. Land conversion and abrasion caused many mangrove trees to die. Mangrove trees that died were only used on the trunk, twigs and leaves by local residents. Many parts of the dead mangrove roots are not utilized. This community service activity aims to provide information and skills to partner groups about the making of MAROCA. Through this activity, partners will gain knowledge and skills in making MAROCA so that materials that are not initially valuable like dead mangrove roots become useful. Based on the description of the problem and the purpose of this community service activity, the activities that have been carried out are counseling about the manufacturing of MAROCA, giving leaflets for the procedures for making and providing tools and materials. The results obtained are increased knowledge and skills of partners about the benefits of dead mangrove roots as economically valuable handicrafts.

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