2026 IJRSE – Volume 15 Issue 11
Available Online: 11 May 2026
Author/s:
Bas, Liezl Joy P.*
Central Bicol State University of Agriculture Pasacao-Campus, Philippines (liezjoy.bas@cbsua.edu.ph)
Ador, Marjorie A.
Bas, Shane Hope C.
Salas, Francis Z.
San Juan, Jhonar B.
Moron, Bernyl M.
Nolasco, Michael N.
Abstract:
The study assessed the status, diversity, and ecological condition of mangrove forests in three selected barangays of Pasacao, Camarines Sur. Sitio Pongol (Balogo), Sitio Sarimao (Caranan), and Sta. Rosa Del Sur. Mangrove ecosystems provide essential ecological services, yet increasing anthropogenic pressures threaten their health and sustainability. This research aimed to identify existing mangrove species, determine diversity indices, evaluate the biometric and vegetation structure, and document human activities affecting the mangrove stands. A quantitative descriptive design was employed using nested quadrat sampling, species identification guided by Primavera (2014), and vegetation analysis following DENR–FMB, 2022 protocols. Diversity indices were computed using the Shannon–Wiener and Simpson formulas. Results revealed five mangrove species from four families across the study sites, with Sitio Sarimao exhibiting the highest species richness and diversity (Simpson D = 0.65; H’ = 1.08). Balogo and Sta. Rosa Del Sur displayed low diversity and dominance by only one or two species. Biometric data indicated mature Sonneratia alba and Avicennia marina in several areas, while Rhizophora species showed small diameters and canopy sizes, suggesting young or regenerating individuals. Vegetation analysis showed that Sarimao had a more balanced and structurally complex mangrove community, while the other two barangays exhibited simplified structures dominated by a single species.
Keywords: mangrove forest, species diversity, vegetation structure, biometric assessment, anthropogenic activities
DOI: https://doi.org/10.5861/ijrse.2026.26185
Cite this article:
Bas, L. J. P., Ador, M. A., Bas, S. H. C., Salas, F. Z., San Juan, J. B., Moron, B. M., & Nolasco, M. N. (2026). Status of Mangrove Forest in Selected Barangay of Pasacao, Camarines Sur. International Journal of Research Studies in Education, 15(11), 297-311. https://doi.org/10.5861/ijrse.2026.26185
* Corresponding Author