Article Per Year (5 Year)
p-Index From 2021 - 2026
1.325
P-Index
This Author published in this journals
All Journal e-Journal BUDIDAYA PERAIRAN JURNAL ILMIAH PLATAX
Sammy N. J. Longdong
Unknown Affiliation
Environmental Science

Published : 12 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 12 Documents
Search

 1   2 
Kesesuaian lahan budi daya rumput laut Caulerpa sp. di Perairan Tanjung Kamala, Minahasa Utara Mamonto, Reva E.; Ngangi, Edwin. L. A.; Undap, Suzanne L.; Kreckhoff, Reni L.; Longdong, Sammy N. J.; Monijung, Revol J.; Pangemanan, Novie P. L.
e-Journal BUDIDAYA PERAIRAN Vol. 12 No. 1 (2024): Januari - Juni
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/bdp.v12i1.56193

Abstract

Abstract Bahoi Waters is located in West Likupang District, known as a coastal village that has a lot of fishing and marine potential. Utilization of Bahoi waters for seaweed cultivation requires good seawater quality to meet the requirements for cultivation. Water quality is one of the factors that plays an important role in the success of seaweed cultivation. The aim of the research was to determine the suitability of water in Bahoi Village for  land for seaweed (Caulerpa sp.) cultivation. The research used in situ measurements at 3 stations, namely: Station A (Existing Cultivation Location), Station B (Tanjung Kamala Waters), and Station C (Tamperong Island Waters). Data collection was carried out 2 times with 3 repetitions for measurement of water parameters. Measurement time was carried out at 07:00 – 09:00; 12:00-14:00, and 17:00- 19:00. Data was analyzed by comparing physical parameters and chemical parameters at each station with a scoring table and weights in the land suitability matrix. The conformity class determination obtained was: Very Suitable with a value range of 37 – 48 (S1), Suitable 25 – 36 (S2), and Not Suitable 16 – 24 (S3). The scoring value for suitability of water quality parameters at Station A was 46, Station B 47, and Station C 44. In conclusion, all stations are in the Very Suitable class for cultivating Caulerpa sp.  Keywords: Caulerpa sp., water quality, seaweed
Optimasi Berat Awal dan Kedalaman pada Vertikultur Caulerpa lentillifera Menggunakan Tali Nilon Monofilamen Ngangi, M.Si, Edwin L. A.; Wantasen, Adnan S.; Longdong, Sammy N. J.; Rembet, Unstain N.W.J.; Mudeng, Joppy D.
Jurnal Ilmiah PLATAX Vol. 14 No. 1 (2026): ISSUE JANUARY-JUNE 2026
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v14i1.66721

Abstract

This study aimed to analyze the effects of initial seed weight and cultivation depth on the growth of Caulerpa lentillifera in a vertical culture system using monofilament nylon rope as the planting medium in the coastal waters of Bahoi Village, North Minahasa. A 3×3 factorial design was applied, consisting of three initial weights (50 g, 100 g, and 150 g) and three depths (20 cm, 70 cm, and 120 cm), each with three replications. Observed parameters included absolute growth and specific growth rate (SGR) over a 28-day cultivation period. The results indicated that initial weight significantly affected growth, whereas depth had no significant effect and no interaction was detected between the two factors. The 50 g treatment produced the highest growth performance with an SGR of 1.39 ± 0.08% day⁻¹, which falls within the productivity range of tropical open-sea farming systems. These findings highlight that optimizing seed weight plays a more critical role than shallow depth variation in improving the cultivation efficiency of C. lentillifera under a monofilament nylon-based vertical culture system. Keywords: initial weight; marine aquaculture; C. lentillifera; monofilament nylon; vertical culture system. Abstrak.  Penelitian ini bertujuan menganalisis pengaruh berat awal bibit dan kedalaman pemeliharaan terhadap pertumbuhan Caulerpa lentillifera pada sistem vertikultur menggunakan tali nilon monofilamen sebagai media tanam di perairan Desa Bahoi, Minahasa Utara. Percobaan menggunakan rancangan faktorial 3×3 dengan tiga taraf berat awal (50 g, 100 g, dan 150 g) serta tiga taraf kedalaman (20 cm, 70 cm, dan 120 cm), masing-masing tiga ulangan. Parameter yang diamati meliputi pertumbuhan mutlak dan laju pertumbuhan harian (SGR) selama 28 hari. Hasil analisis menunjukkan bahwa berat awal berpengaruh signifikan terhadap pertumbuhan, sedangkan kedalaman tidak berpengaruh nyata dan tidak terdapat interaksi antara kedua faktor. Perlakuan 50 g menghasilkan pertumbuhan tertinggi dengan nilai SGR 1,39 ± 0,08% per hari. Nilai tersebut berada dalam kisaran produktivitas sistem budidaya laut terbuka tropis. Hasil penelitian ini menegaskan bahwa optimasi ukuran bibit lebih menentukan dibandingkan variasi kedalaman dangkal dalam meningkatkan efisiensi budidaya C. lentillifera pada sistem vertikultur berbasis tali nilon monofilamen. Kata kunci: berat bibit; budidaya laut; C. lentillifera; nilon monofilamen; sistem vertikal
Co-Authors Adnan Wantasen Ali Djamhuri Baring, Vira Carolus Paulus Paruntu Datangmanis, Adieng A. R. Diane J. Kusen Edwin D Ngangi Edwin L. A. Ngangi Febi S.D. Saragih Fransine B. Manginsela Galih Arif Kusuma Hengky J. Sinjal, Hengky J. Henky Manoppo Indra R. N. Salindeho Joice R.T.S.L Rimper Joppy Mudeng Juliaan Ch. Watung Kreckhoff, Reni L. Kudato, Vania E. Mamonto, Reva E. Mamuko, Nelsi Monijung, Revol J. Ngangi, Edwin. L. A. Ngangi, M.Si, Edwin L. A. Ockstan J. Kalesaran Pangemanan, Novie P. L. Parenta, Villy D. Reiny A. Tumbol Sabono, Mateda M. Sambali, Hariyani Sipriana S. Tumembouw Suzanne L Undap Suzanne L. Undap Toar, Debby Unstain N.W.J. Rembet Winda Mercedes Mingkid