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All Journal Jurnal Perikanan Proceedings of the Vocational Seminar on Marine and Inland Fisheries
Widayanti, Dhiya Artika
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Agriculture, Biological Sciences & Forestry Environmental Science

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STRUCTURE OF MANGROVE VEGETATION IN MANGKANG WETAN VILLAGE, TUGU DISTRICT, SEMARANG CITY Ismail, R. Mohamad; Widayanti, Dhiya Artika; Wardono, Suko
Jurnal Perikanan Unram Vol 15 No 6 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i6.1622

Abstract

Mangroves are coastal vegetation characterized by distinctive root morphology and adapted to tidal environments. They play a vital role as providers of organic matter and represent a natural resource utilizable by local communities. The objective of this study was to determine the mangrove community structure in Mangkang Wetan Village, Tugu District, Semarang City. The research was conducted from July to September 2024 across three observation stations within Mangkang Wetan Village. Analysis of mangrove community structure employed the purposive sampling method using a line transect with 10 x 10 m plots, replicated three times. The results of the mangrove community structure analysis in Mangkang Wetan Village identified only one mangrove species: Avicennia marina, present at the tree vegetation level. This species was selected as it is readily available in the surrounding natural mangrove forest, easily cultivated, and its stands provide significant resistance to coastal abrasion. Consequently, the study location constitutes a monospecific (homogeneous) mangrove forest.  The Importance Value Index (IVI) for mangroves at stations 1, 2, and 3 was consistently 300. The mangrove species diversity level in Mangkang Wetan Village was recorded with a Shannon-Wiener Diversity Index (H') value of 0, indicating relatively low species diversity. The species evenness index values at stations 1, 2, and 3 were also 0, reflecting low species evenness. The dominance index (C) value was 1, signifying the dominance of a single species. The low diversity and evenness values are attributed to the relatively uniform or homogeneous condition of the mangrove forest.
ESTIMATED CARBON STOCK IN MANGROVE VEGETATION ON TUNDA ISLAND, SERANG REGENCY, BANTEN PROVINCE Wardono, Suko; Widayanti, Dhiya Artika; Ismail, R. Moh; Rosalina, Dwi; Rizkiah, Riza
Proceedings of The Vocational Seminar on Marine & Inland Fisheries Volume 3 Nomor 1 Tahun 2026
Publisher : Politeknik Kelautan dan Perikanan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/voc_seminar.v3i1.20765

Abstract

Tunda Island in Serang Regency, Banten Province, hosts a mangrove ecosystem with significant carbon storage potential, yet remains underutilized in climate mitigation efforts. This study aims to estimate the carbon stock of mangrove vegetation, focusing on leaf and branch components using both destructive and non-destructive methods. Samples were collected from six stations using line transect and 10×10 meter plot techniques. The identified mangrove species included Rhizophora apiculata, Rhizophora stylosa, Avicennia marina, Avicennia officinalis, and Bruguiera gymnorrhiza. Results showed estimated biomass ranging from 0.001757 to 0.024657 tons/ha, while carbon stock in leaves and branches ranged from 0.01197–0.01791 tons/ha and 0.02559–0.04184 tons/ha, respectively. Variations in carbon stock were influenced by dominant species, vegetation density, tree diameter (DBH), and environmental factors. The relatively low carbon values suggest that the mangrove ecosystem in Tunda Island is still in a developing phase. This highlights the need for sustainable conservation and rehabilitation efforts. The findings serve as a scientific foundation for coastal ecosystem management and blue carbon strategies in mitigating climate change.
Co-Authors Dwi Rosalina Ismail, R. Moh Ismail, R. Mohamad Rizkiah, Riza Wardono, Suko