2025 IJRSE – Volume 14 Issue 17
Available Online: 12 December 2025
Author/s:
Banzuela, Jashon
Central Bicol State University of Agriculture-Graduate School, Philippines (jason.banzuela@cbsua.edu.ph)
Firme, Paul Adrian
Central Bicol State University of Agriculture-Graduate School, Philippines (pauladrian.firme@cbsua.edu.ph)
Manayoba, Mary Joy
Central Bicol State University of Agriculture-Graduate School, Philippines (maryjoy.manayoba@cbsua.edu.ph)
Paz, Rowelyn
Central Bicol State University of Agriculture-Graduate School, Philippines (rowelyn.paz@cbsua.edu.ph)
Siares, Imee Franz*
Central Bicol State University of Agriculture-Graduate School, Philippines (imeefranz.siares@cbsua.edu.ph)
Abstract:
This study conducted a rapid ecological assessment of the Aroroy River in Barangay Matalang-Talang, Aroroy, Masbate, to establish baseline information on its biological composition, physicochemical water quality, and socio-ecological services. Three sampling stations—upstream, midstream, and downstream—were evaluated through field surveys, biodiversity inventories, and water quality measurements. Results revealed a generally healthy freshwater ecosystem, indicated by the presence of pollution-sensitive macroinvertebrates such as mayflies, caddisflies, gastropods, and crustaceans across all stations. Two fish species, Sillago sp. and Mugil cephalus, were documented at the upstream station, suggesting that this section provides suitable habitat conditions characterized by cool, well-oxygenated waters and intact riparian vegetation. Riparian flora richness was highest upstream and lowest downstream, reflecting a gradient of increasing disturbance, sediment deposition, and potential human pressures toward the lower river sections. Water quality parameters—including dissolved oxygen, pH, temperature, and total dissolved solids—were within or above national and international standards for Class C freshwater bodies, indicating good ecological condition and low pollution levels. Despite the river’s high ecological value, socio-ecological assessments showed minimal reliance of local residents on the river for provisioning services; recreational use predominated, often accompanied by littering, vandalism, and improper waste disposal. These findings highlight the disparity between ecological health and community stewardship. Overall, the study provides essential baseline data for environmental planning and emphasizes the need for stronger community engagement, environmental education, and sustainable river management interventions to preserve the Aroroy River’s ecological integrity.
Keywords: Aroroy River, freshwater ecosystem, biodiversity assessment, macroinvertebrates, water quality, riparian vegetation, socio-ecological services
DOI: https://doi.org/10.5861/ijrse.2025.25325
Cite this article:
Banzuela, J., Firme, P. A., Manayoba, M. J., Paz, R., & Siares, I. F. (2025). Rapid assessment of river ecosystem in Brgy. Matalang-Talang, Aroroy, Masbate. International Journal of Research Studies in Education, 14(17), 241-252. https://doi.org/10.5861/ijrse.2025.25325
*Corresponding Author