EVALUATION OF THE WATER QUALITY OF THE MANAURE RI-VER USING BMWP/COL AND ASTP INDICES AND PHYSICAL-CHEMICAL PARAMETERS
The study evaluated the water quality of the Manaure River through physicochemical analysis and bioindication with macroinvertebrates at four points, covering wastewater discharge and the village of La Vega de Jacob. pH, temperature, conductivity, and dissolved oxygen were measured in situ, while BOD₅, COD, phosphorus, and nitrogen were determined in the laboratory. Macroinvertebrates were identified to calculate Shannon-Wiener, Simpson, Margalef, Dominance, BMWP/COL, and ASTP. The results reflected high COD (140 mg/L), BOD₅ (35 mg/L), and total phosphorus (0.71 mg/L) values at the discharge point, as well as decreased diversity and in-creased dominance. The BMWP/COL ranged from 34 (class IV) to 89 (class II), while the ASTP ranged from 4.25 to 7.50. The coexistence of sensitive and tolerant families was evident, with deterioration at the discharge point and partial recovery downstream. The river shows moderate impact but maintains ecological resilience.
EVALUATION OF THE WATER QUALITY OF THE MANAURE RI-VER USING BMWP/COL AND ASTP INDICES AND PHYSICAL-CHEMICAL PARAMETERS
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DOI: https://doi.org/10.22533/at.ed.5157425121214
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Palavras-chave: BMWP/COL index, ASTP indices, Bioindicators
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Keywords: BMWP/COL index, ASTP indices, Bioindicators
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Abstract:
The study evaluated the water quality of the Manaure River through physicochemical analysis and bioindication with macroinvertebrates at four points, covering wastewater discharge and the village of La Vega de Jacob. pH, temperature, conductivity, and dissolved oxygen were measured in situ, while BOD₅, COD, phosphorus, and nitrogen were determined in the laboratory. Macroinvertebrates were identified to calculate Shannon-Wiener, Simpson, Margalef, Dominance, BMWP/COL, and ASTP. The results reflected high COD (140 mg/L), BOD₅ (35 mg/L), and total phosphorus (0.71 mg/L) values at the discharge point, as well as decreased diversity and in-creased dominance. The BMWP/COL ranged from 34 (class IV) to 89 (class II), while the ASTP ranged from 4.25 to 7.50. The coexistence of sensitive and tolerant families was evident, with deterioration at the discharge point and partial recovery downstream. The river shows moderate impact but maintains ecological resilience.
- Karina Paola Torres Cervera
- Euller De Jesús Díaz Rodríguez
- Jarlis Campuzano Gámez
- Pedro Juan Torres Flores
