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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA)
Wawan Nurmawan
Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology Physics

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Biodiversity and Carbon Storage in Mangroves with Varying Protection in North Sulawesi Wawan Nurmawan; Martina A. Langi
Jurnal Penelitian Pendidikan IPA Vol 11 No 12 (2025): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i12.13082

Abstract

Mangrove ecosystems contribute to biodiversity conservation and climate-change mitigation through carbon storage. This study assessed the association between biodiversity (flora and fauna) and carbon stocks in mangroves of North Sulawesi across three management contexts: a conservation zone (Bunaken), a protected forest (Sondaken), and an unprotected area (Bitung). Field surveys were conducted to compile species inventories, and carbon stocks were estimated from biomass measurements. Protected sites showed higher species richness and larger carbon stocks than the unprotected site. Species richness was positively and significantly correlated with carbon storage, indicating that sites with greater biodiversity also tended to store more carbon. These results support the role of effective protection in maintaining both ecological integrity and carbon sequestration capacity. In conclusion, strengthening mangrove protection in North Sulawesi is likely to deliver co-benefits for biodiversity conservation and climate mitigation.
Characterization and Utilization of Woka (Saribus rotundifolius (Lam.) Blume.) Based on Local Wisdom of the People of Bolaang Mongondow Regency Wawan Nurmawan; Hengki D. Walangitan; Maria Y. M. A. Sumakud; Euis F. S. Pangemanan
Jurnal Penelitian Pendidikan IPA Vol 11 No 12 (2025): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i12.13159

Abstract

Woka (Saribus rotundifolius (Lam.) Blume.) is a palm tree that has significant ecological and socio-cultural value for the community of Bolaang Mongondow. However, local knowledge about its use and characteristics is threatened by extinction due to modernization. This study aims to: (1) identify the morphological characteristics of the woka plant, and (2) document the forms of utilization based on the local wisdom of the community of Bolaang Mongondow in managing woka. This study used qualitative methods with an ethnobotanical approach. Data were collected through field observations, in-depth interviews with key informants (traditional leaders and craftsmen), and documentation studies. The results show that woka has distinctive morphological characteristics, such as round fan-shaped leaves (rotundifolius) and strong stems. Woka has a wide range of uses, especially its leaves, which are used as roofing material for traditional houses (baloi), woven crafts for traditional ceremonies, and as food wrappers. Local wisdom is reflected in the knowledge system of sustainable harvesting techniques, traditional rules of harvesting, and beliefs that support the preservation of woka. It is concluded that woka is not just a plant but an integral part of the local cultural identity and ecosystem. This documentation is expected to serve as a database for the conservation and sustainable development of the economic value of woka.
Co-Authors Hengki D. Walangitan Maria Y. M. A. Sumakud Martina A. Langi Pangemanan, Euis F. S.