Habitat assessment of Muleta River in Bukidnon, Philippines

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Research Paper 10/08/2022
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Habitat assessment of Muleta River in Bukidnon, Philippines

Rasel A. Lacandula, Victoria T. Quimpang
J. Bio. Env. Sci.21( 2), 50-76, August 2022.
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Muleta River is one of the river systems in Bukidnon that is considered a critical river and a watershed supporting the regional irrigation system needing immediate rehabilitation. However, the status of Muleta River in Bukidnon was not included in the rapid assessment study of the Mindanao Development Authority (MinDA) in selected rivers in Mindanao. This study was conducted to determine the water quality and habitat status of Muleta River in Bukidnon, Philippines. Three (3) assessment stations; upper stream, midstream and downstream were established with a 100 meter stretch in every sampling area in each station. Field survey was conducted with the use of visual habitat assessment field data sheet and multi-parameter probe (HORIBA U-52) for the determination of the water quality. In terms of biotic and abiotic factors among the sampling areas, results revealed the increasing degree of the river status (poor to optimal) is as follows: Lumatong< Muleta Dam< Masimag River< Malinao Bridge< Omonay< Muleta River Junction< Muleta- Bingbong River< Lalapoy River< Baguik-ikan River< Lantay River< Upper Baguik- ikan River. Physico- chemical parameters suggested poor water quality as compared to the water quality standards set by DAO 34 due to failing values of turbidity, total suspended solids (TSS) and nitrate concentration with 45.86 NTU, 127.50mg/L and 16.32mg/L, respectively. Several stressors were identified to have influenced river’s integrity that includes unregulated physical resource extraction and intensive agricultural cultivation. General results of the study showed a marginal type of habitat that is less disturbed but less suitable for habitat.


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