Characterization of benthic macrofauna in Iloilo river


  • Patrick Andre Fernandez University of the Philippines Visayas-Miagao, College of Fisheries, Institute of Marine Fisheries and Oceanology
  • Sheila Mae Santander-de Leon Institute of Marine Fisheries and Oceanology, College of Fisheries and Ocean Sciences; University of the Philippines Visayas



Benthic diversity, Benthic macrofauna , Iloilo River, Estuarine river, Taxa richness


Iloilo River is a vital area for fishing, tourism, and various economic activities. It has experienced rapid changes with developments along the area that may influence its ecological processes.This study is an assessment of the abundance and diversity of benthic macrofauna in Iloilo River through the identification of the major taxonomic groups found along the area. Bivalvia dominated all the sampling stations with a count of 115-4935 individuals contributing to 71.70% of all the identified individuals. Overall diversity (H’) was poor with a range of 0.45-1.12. The taxon richness (S) indicated that there were only 3-4 taxa present at each sampling station. Taxon evenness (J’) was also relatively low with a range of 0.32-0.84. The biological indices suggest poor taxon diversity and low population uniformity.  Although redox potential showed that the sediment habitat of these macrofauna are under oxic conditions, low D.O. may suggest influence on the distribution of the benthos.

Author Biography

Sheila Mae Santander-de Leon, Institute of Marine Fisheries and Oceanology, College of Fisheries and Ocean Sciences; University of the Philippines Visayas

Institute of Marine Fisheries and Oceanology, Associate Professor, IMFO Director


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How to Cite

Fernandez, P. A., & Santander-de Leon, S. M. (2023). Characterization of benthic macrofauna in Iloilo river. Sustainable Aquatic Research, 2(3), 203–210.



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