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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis BULETIN OSEANOGRAFI MARINA Journal of Marine Research Jurnal Sains dan Teknologi Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Journal of Applied Geospatial Information JFMR (Journal of Fisheries and Marine Research) Jurnal Biologi Tropis Dinamika Maritim Kumawula: Jurnal Pengabdian Kepada Masyarakat Jurnal Abdi Insani Jurnal Inovasi Pendidikan dan Sains COJ (Coastal and Ocean Journal) Jurnal Pengabdian Pada Masyarakat Journal of Fisheries & Marine Jurnal Perikanan
Paputungan, Mohammad Sumiran
Program Studi Ilmu Kelautan, Fakultas Perikanan Dan Ilmu Kelautan, Universitas Mulawarman
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Journal : Journal of Fisheries

 1 
Structure of Mangrove Forest and Carbon Sequestration Potential in the Estuarine Region of the Somber River, Balikpapan Bay, Indonesia: A Preliminary Assessment Hamdhani, Hamdhani; Paputungan, Mohammad Sumiran; Ritonga, Irwan Ramadhan; Suyatna, Iwan
Jurnal Ilmiah Perikanan dan Kelautan Vol. 18 No. 1 (2026): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v18i1.77808

Abstract

Graphical Abstract   Highlight Research Nine mangrove species were identified in the Somber River estuary, dominated by Rhizophora and Avicennia. The mangrove forest exhibited an average density of 1,444 trees/ha, DBH of 13.3 cm, and canopy cover of 62.04%. Litterfall production averaged 9.28 Mg/ha/year, resulting in an estimated carbon sequestration of 47.25 Mg CO₂-eq/ha/year. Carbon sequestration correlated strongly with canopy cover and tree density, but not with DBH, with the midstream segment showing the highest values.   Abstract Mangroves are included in East Kalimantan’s emission reduction programs, but carbon absorption data remain lacking due to limited studies. In Balikpapan Bay, particularly around the Somber River estuary, information on carbon accumulation rates is still limited. This study aimed to document the species composition, tree density, diameter at breast height (DBH), and canopy cover of mangrove forests, estimate their carbon sequestration capacity, and compare sequestration rates across the upstream, midstream, and downstream sections of the Somber River in Balikpapan City, Indonesia. Nine sampling stations were established along the river to represent each segment. At each, mangrove species were identified, tree density and canopy cover measured, and litterfall collected. Carbon sequestration was then estimated from litterfall-based Net Primary Productivity (NPP). Nine species were recorded, dominated by Rhizophora and Avicennia. The forest averaged 1,444 trees/ha, DBH of 13.3 cm, and 62.04% canopy cover. Midstream sites showed the highest density (1,533 trees/ha) and canopy cover (65.7%), though not in DBH. Litterfall averaged 9.28 Mg/ha/year (0.58–18.76), corresponding to 47.25 Mg CO₂-eq/ha/year, peaking midstream. Sequestration rates did not differ significantly among segments but correlated strongly with canopy cover, density, and DBH. This study provides initial estimates of mangrove carbon uptake in the Somber River estuary near the Kariangau industrial area, offering insights for management strategies to enhance blue carbon storage, provides externally relevant estimates and a structure-to-sequestration linkage that can guide restoration targets, carbon accounting, and coastal policy in working estuaries. Further research should quantify sediment carbon accumulation and consider species-specific differences to better inform restoration efforts.
Co-Authors AA Sudharmawan, AA Aditya Irawan Adnan Adnan Adnan Adnan Agathajani, Brigitha Anjeli Ahmad Ahmad Ahmad Ahmad Ahmad Ahmad Ahmad Nabillah Ramadhan Alan Frendy Koropitan Ali Arman Lubis Alimuddin, Alimuddin Ambomasse, Yusril M. An Nisa Octavia Andi Fitri Sakmiana Andi Fitri Sakmiana Andini, Ardita Dwisepti Anindia Resty Syafira Anugrah Aditya Budiarsa, Anugrah Arwadi, Mohammad Tri Arwadi, Tri Ashar, Andini Aulia Ayuk Azwar Pramucti Brigitha Anjely Agatha Jani Bulan, Dewi Embong Chella Nur Kumala Dayang Nathasya Aurelia Putri Awari Dewi Embong Bulan Dewi Embong Bulan Dharmawan, I Wayan Eka Elisar, Elisar Ence Alya Vira Azizah Eryati, Ristiana Ferdy Gustian Firman , Firman Firman Firman Hamdhani, Hamdhani I Wayan Nurjaya Irma Suryana Irma Suryana Irma Suryana Irwan Ramadhan Ritonga Iwan - Suyatna Iwan Suyatna Iwan Suyatna Jani, Brigitha Anjely Agatha Jemi Irlanda Haikal Kolibongso, Duaitd Kusumaningrum, Widya Loto, Naomi Mario Putra Suhana Mufidah, Fitriatul Muhammad Trial Fiar Erawan Naufal Athasyah Norma Gupita Novia, Rani Nur Hasanah Nurdiansah, Doni Nurfadilah Nurfadilah Nurfadilah Nurfadilah Nurfadilah Nurfadilah Nurul Tri Oktavia Putra, Andry Purnama Putra, Andry Purnama Ramli Ramli Rani Novia Rani Novia Renyaan , Jeverson Ristiana Eryati Ristiana Eryati Robin Saputra Simanihuruk, Dorsen Hotma Tua Suryana, Irma Susi Rahmawati Susi Rahmawati Suyatna , Iwan Syafira, Anindia Resty Tri Prartono Utama, Ferdy Gustian Utama, Ferdy Gustian Viddo Try Anggoro Widya Kusumaningrum Widya Kusumaningrum Widya Kusumaningrum Zibar, Zan