Optimizing Kappaphycus Alvarezii Seedlings: Acclimatization and Cultivation Methods for Sustainable Seaweed Seed in Lombok Kodek Bay

Authors

Dasep Hasbullah, Research Center for Marine and Land Bioindustry, National Research and innovation Agency Republik of IndonesiaFollow
Fahrurrozi Fahrurrozi, Research Center for Marine and Land Bioindustry, National Research and innovation Agency Republik of Indonesia
Gagan Garnawansah, Research Center for Marine and Land Bioindustry, National Research and innovation Agency Republik of IndonesiaFollow
Zaenal Arifin Siregar, Research Center for Marine and Land Bioindustry, National Research and innovation Agency Republik of Indonesia
Wahyu Purbiantoro, Research Center for Marine and Land Bioindustry, National Research and Innovation Agency Republik of Indonesia
Moh. Awaludin Adam, Research Center for Marine and Land Bioindustry, National Research and Innovation Agency Republik of Indonesia
Idham Sumarto Pratama, Research Center for Marine and Land Bioindustry, National Research and Innovation Agency Republik of Indonesia
Nurhalis Tarmin, Research Center for Marine and Land Bioindustry, National Research and Innovation Agency Republik of Indonesia
Balkam F. Badi, Research Center for Marine and Land Bioindustry, National Research and Innovation Agency Republik of Indonesia
Abdul Wahab, Research Center for Marine and Land Bioindustry, National Research and Innovation Agency Republik of Indonesia
Raismin Kotta, Research Center for Marine and Land Bioindustry, National Research and Innovation Agency Republik of Indonesia

Abstract

This study explores the combined[-10pc]AU: Please specify the corresponding author name. effects of cultivation methods and acclimatization durations on the growth performance of Kappaphycus alvarezii, a tropical seaweed widely utilized in biostimulants and bioplastics. Cultivation methods included monoculture of Spinosum (SNP), monoculture of Cottonii (DNP), and polyculture of Spinosum and Cottonii (PSP), while acclimatization treatments involved durations of 0, 2, and 4 days before planting (DBA). Results demonstrated that the SNP system achieved the highest productivity, with maximum weight (142.8 g) and relative growth rate (RGR) of 3.21% per day observed under 0 DBA. The 2 DBA treatment was optimal across all cultivation systems, enhancing both weight and RGR metrics. However, the interaction cultivation methods and acclimatization durations were statistically insignificant (p > 0.05), indicating that their effects on growth are independent and additive. Additionally, the DNP system exhibited the lowest productivity due to its susceptibility to pest predation, while PSP showed moderate performance, benefiting from species synergy. These findings highlight the importance of tailoring cultivation methods and acclimatization strategies separately to maximize growth and biomass yield. Further studies incorporating longer acclimatization periods and protective measures are recommended to enhance productivity and sustainability in seaweed aquaculture.

First Page

248

Last Page

263

Recommended Citation

Hasbullah, Dasep; Fahrurrozi, Fahrurrozi; Garnawansah, Gagan; Siregar, Zaenal Arifin; Purbiantoro, Wahyu; Adam, Moh. Awaludin; Pratama, Idham Sumarto; Tarmin, Nurhalis; Badi, Balkam F.; Wahab, Abdul; and Kotta, Raismin (2025) "Optimizing Kappaphycus Alvarezii Seedlings: Acclimatization and Cultivation Methods for Sustainable Seaweed Seed in Lombok Kodek Bay," Journal of King Abdulaziz University: Marine Science: Vol. 35: No. 2, Article 12.

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