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All Journal AKULTURASI (JURNAL ILMIAH AGROBISNIS PERIKANAN) AQUATIC SCIENCE & MANAGEMENT e-Journal BUDIDAYA PERAIRAN JURNAL ILMIAH PLATAX JURNAL PERIKANAN DAN KELAUTAN TROPIS
Edwin D Ngangi
Sam Ratulangi University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Environmental Science

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Journal : AQUATIC SCIENCE

 1 
Land suitability of seaweed farming in Minahasa Regency, North Sulawesi Province Schaduw, Joshian N. W; Ngangi, Edwin L. A; Mudeng, Joppy D
AQUATIC SCIENCE & MANAGEMENT Vol 1, No 1 (2013): April
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.1.1.2013.1972

Abstract

The success of seaweed cultivation is determined from the determination of the location. This is because the production and quality seaweed influenced by ecological factors including the condition of the substrate surface waters, water quality, climate, geographical bottom waters. Arakan villages in the District of South Minahasa regency become one of the centers of seaweed cultivation in the province of North Sulawesi. The specific objective of this study was obtained in the form of a map of suitability mapping seaweed cultivation areas; gathering data and information about the extent of the area, water capacity, area unit, and carrying water. The study was conducted in the waters of the village of Arakan, District Tatapaan, South Minahasa regency, North Sulawesi. When phase 3 study conducted every month from June to December in 2012. The analysis is based on space availability, suitability waters that support the cultivation of seaweed. Suitability space spatially waters using physical and chemical parameters of waters which is a prerequisite eligibility seaweed cultivation. Spatial observations by using a Geographic Information System (GIS) for the weights and scores in determining the suitability of land. Process is done through the preparation of spatial database and
Effect of NPK ferlilizer (nitrogen, phosphorus, potassium) on seaweed, Kappaphycus alvarezii, growth and white spot desease prevention Ismail, Ramli A.; Ngangi, Edwin L.A.; Lasut, Markus T.
AQUATIC SCIENCE & MANAGEMENT Vol 2, No 1 (2014): April
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.2.1.2014.12389

Abstract

Title (Bahasa Indonesia): Pengaruh pupuk NPK [nitrogen, fosfor, kalium] terhadap pertumbuhan dan penanggulangan penyakit ‘white spot’ pada rumput laut Kappaphycus alvarezii This study aimed to analyze the effect of NPK fertilizer absorption on the growth of seaweed, Kappaphycus alvarezii, and the white spot disease prevention. This study could become a source of information for seaweed farmers to increase seaweed production through the use of NPK fertilizers. This study was conducted from January until March, 2014 in the waters of Toropot Village, the District of Bokan Islands, Banggai Laut. To know whether the different doses affect the white spot infection, ANOVA with Tukey's test was used. Results showed that all doses had the same potential to recover from white spot disease and heal faster than the control (no dose). The addition of nutrients N, P, and K at high dose could accelerate the recovery of the algae from white spot desease and increase the growth rate. Penelitian ini bertujuan untuk menganalisis pengaruh penyerapan pupuk NPK terhadap pertumbuhan dan penanggulangan penyakit white spot pada rumput laut Kappaphycus alvarezii. Penelitian ini dapat sebagai sumber informasi bagi pembudidaya rumput laut untuk meningkatkan produksi rumput laut melalui penggunaan pupuk NPK. Penelitian ini dilaksanakan mulai Januari sampai Maret 2014 di perairan Desa Toropot, Kecamatan Bokan Kepulauan, Kabupaten Banggai Laut. Untuk mengetahui apakah perbedaan dosis memberikan pengaruh terhadap serangan white spot, maka dilakukan pengujian ANOVA dengan uji Tukey. Hasil menunjukkan bahwa bahwa semua dosis memiliki potensi yang sama untuk memulihkan penyakit white spot dan lebih cepat penyembuhannya dari kontrol (tanpa dosis). Penambahan nutrien N, P dan K pada dosis tinggi dapat mempercepat pemulihan alga dari penyakit white spot dan dapat meningkatkan laju pertumbuhannya.
Environmental condition to fish culture using floating cage in Manalu Cluster, Sangihe Islands Regency Lano, Inayati H.G.M; Ngangi, Edwin L.A; Lasut, Markus T
AQUATIC SCIENCE & MANAGEMENT Vol 6, No 2 (2018): October
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.6.2.2018.24839

Abstract

Title (Bahasa Indonesia): Kondisi lingkungan perairan untuk budi daya ikan dengan sistem karamba jaring apung di Perairan Klaster Manalu, Kabupaten Kepulauan Sangihe Manalu and it surroundings cluster is a zone which is designatedas a development center for agropolitan and minapolitan region and as a marine and coastal aquaculture center which include Manalu Bay, South Tabukan sub-district, South East Tabukan sub-district, and Center Tabukan sub-district. Hangke,Sensahang/Ensahange, Talawe, Kalagheng, Mutung and Bembiha areasareincluded inthis cluster, although noresearch has been conducted to studythis area. Datacollected includewater quality parameters, data about convenience and risk factor. Data about convenience and risk factorwas collected by interview with persons who consider as those who know best about the site and do marine culture for living. Water quality parameters was collected by doing measurementonsalinity, temperature, disolved oxygen, visibility, pH, water depth and current velocity  in 4 representative areas.The collected data showthat convenience factor was high and risk factor waslow. Due to lowwater depth and lowvisibility, area 1and 2 was not recomended for futher development for marine culture with floating cage construction. Area 3 and 4 can be recomended for futher development because data result show good value.Klaster Manalu dan sekitarnya merupakan zona yang diperuntukkan untuk pusat pengembangan kawasan agropolitan dan minapolitan, dan pusat budi daya pantai dan laut di mana meliputi Teluk Manalu, Kecamatan Tabukan Selatan, Kecamatan Tabukan Timur, dan Kecamatan Tabukan Tengah. Perairan Hangke, Sensahang/Ensahange, Talawe, Kalagheng, Mutung, dan Bembiha masuk dalam klaster ini, meskipun belum ada penelitian dilakukan untuk mengkaji hal tersebut. Data yang dikumpulkan meliputi parameter kualitas air, faktor kenyamanan, dan faktor risiko. Data faktor kenyamanan dan risiko dikumpulkan menggunakan teknik wawancara kepada masyarakat, yang mengetahui tentang keberadaan daerah tersebut. Parameter kualitas air dikumpulkan dengan cara melakukan pengukuran terhadap salinitas, suhu, oksigen terlarut, kecerahan, pH, kedalaman, dan kecepatan arus pada 4 lokasi yang dipilih. Hasil analisis menunjukkan, bahwa faktor kenyamanan berada pada tingkatan tinggi dan faktor risiko berapa pada tingkatan rendah. Dalam hal kondisi perairan, karena kedalaman dan kecerahan rendah pada Lokasi 1 dan 2, maka lokasi tersebut tidak dianjurkan untuk dilakukan pengembangan budi daya laut menggunakan kurungan jaring apung (KJA). Lokasi 3 dan 4 dapat dianjurkan untuk dilakukan pengembangan karena hasil pengamatan menunjukkan nilai yang “baik”.
Management of scad fisheries (Decapterus spp.) in Sulawesi Sea Waters, North Sulawesi Province, using EAFM Puansalaing, Deysy M.; Budiman, Johnny; Boneka, Farnis B.; Makapedua, Daisy M.; Lasut, Markus T.; Ngangi, Edwin L.A.; Sumilat, Deiske A.; Darmono, Oktaviano P.
AQUATIC SCIENCE & MANAGEMENT Vol 9, No 1 (2021): APRIL
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.9.1.2021.32468

Abstract

There are a large variety and quite abundant types of small pelagic fish that have high economic value in the Sulawesi Sea. One of which is the blue scad fish or commonly known as malalugis (Decapterus macarellus). This study aims to analyze and determine the status of scad fisheries management and to develop recommendations in the management of scad fisheries in the waters of Sulawesi Sea, North Sulawesi Province. The evaluation of fishery management status is carried out using multi-criteria analysis (MCA) through the development of composite index of each indicator of Ecosystem Approach to Fisheries Management (EAFM). The results showed that, in general, the status of scad fisheries management in North Sulawesi Province, was in ‘good’ category, specifically reviewed from the domain of fish resources fall into the category of “medium”, habitat and ecosystem “good”, fishing techniques “good”, economy “not good”, social “medium” and institutional “good”. Management actions take precedence over domains that have “poor” indicator values. Priority management action is implemented in the economic domain, followed by the domain of fish resources, social, institutional and fishing techniques.Indonesian title: Pengelolaan perikanan ikan layang (Decapterus spp.) di perairan Laut Sulawesi, Provinsi Sulawesi Utara, menggunakan EAFM
Impact of tropical cyclone Amang on variability of wind speed, salinity, sea surface temperature, and their relationship to chlorophyll-a in sea waters of Sangihe Island Rachim, M. Hatta; Schaduw, Joshian N.W.; Wantasen, Adnan S.; Patty, Wilhelmina; Ngangi, Edwin L.A
AQUATIC SCIENCE & MANAGEMENT Vol 9, No 2 (2021): OCTOBER
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jasm.v9i2.34589

Abstract

High concentrations of chlorophyll-a can be used to predict where fish gather. On the other hand, tropical cyclones are one of the triggering factors for vertical stirring and upwelling that cause fertility of waters. The Sangihe Island area is not an effective area for the formation of tropical cyclones. However, due to its geographical location with a tropical cyclone area and trajectory, the potential for disturbances caused by cyclones is impactful on Sangihe Island. The distribution of wind speed, salinity, sea surface temperature and chlorophyll-a concentration can be detected by satellite remote sensing imagery. This study aims to analyze the impact of Tropical Cyclone Amang on the variability of wind speed, salinity, sea surface temperature and on the concentration of chlorophyll-a in Sangihe Island. This study useswind speed, salinity, sea surface temperature and chlorophyll-a data during the Amang Tropical Cyclone (January 6-27, 2019) from the AQUA-MODIS satellite imagery. The results show that the relationship between wind speed and chlorophyll-a concentration has impact on other parameters where both parameters showed a strong correlation value. It was also showed on the relationship between sea surface temperature and chlorophyll-a.However, the relationship between salinity and chlorophyll-a concentration showed lowest effect among those parameters.Indonesian title: Dampak siklon tropis Amang terhadap variabilitas kecepatan angin, salinitas, suhu permukaan laut, dan hubungannya dengan klorofil-a di perairan laut Pulau Sangihe
Co-Authors Achmad, Febrio V. Adnan Wantasen Agus Gaghaube Ali Djamhuri Baring, Vira Bella, Sintia S. Billy Theodorus Wagey Carolus Paulus Paruntu Cyska Lumenta Dahlia Malau Darmono, Oktaviano P. Darwasito, Suria Dawaso, Agri Deiske Adeliene Sumilat, Deiske Adeliene Deysy M. Puansalaing Diany R.A Silalahi Edy, Selvanus Farnis B. Boneka Fauzanabri, Renno Ferdinand Frans Tilaar Gompi, Wiranto Grace O. Tambani Grevo S Gerung Handy Burase Hengky J. Sinjal, Hengky J. Henky Manoppo Henneke Pangkey Indra R. N. Salindeho Indra R.N. Salindeho Indri Manembu Ingrid Sembiring John L. Tombokan Johnny Budiman Joice R.T.S.L Rimper Joppy Mudeng Joshian N.W. Schaduw Karisoh, Yuriani S. Kaseger, Cindy Kepel, Rene Ch. Kreckhoff, Reni L. Kudato, Vania E. Kurniawan, Putra M. Kusen, Diane J. Kusen, Diane Joula Lalita, Jans Djoike Lano, Inayati H.G.M Lukas L.J.J Mondoringin Makapedua, Daisy M. Mamesah, Jeivana F.T Mandagi, Stephanus V. Mandagi, Stephanus Vianny Manengkey, Hermanto W. K Markus T. Lasut Maryen, Yakob Oskar Mokolensang, Jeffrie F. Monijung, Revol D. Niti, Eukharistian Nurdin Jusuf, Nurdin Ockstan J. Kalesaran Pratasik, Gerald A. Rachim, M. Hatta Ramli A. Ismail, Ramli A. Reiny A. Tumbol Reiny A. Tumbol Robert J Rompas Robert Rompas Roeroe, Kakaskasen Andreas Rompas, Rizald M. Salindeho, Indra R. Sambali, Hariyani Sammy N. J. Longdong Sammy N. J. Longdong Sammy N.J. Longdong Saragih, Debby Dyanessa Silalahi, Torang J. P. Sinaga, Chintya R. Sinipirang, Frischa A. Sinjal, Chatrien A. L Sipriana S. Tumembouw Sondakh, Srie J. Suzanne L Undap Tarimakase, Yulianus Tilaar, Ferdinand F. Tindage, Tantri W. Tulung, Herol A. Usoh, Yosua Victoria E. N. Manoppo Wihelmina Dimara Wilhelmina Patty Winda Mercedes Mingkid Yanis Burdames