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Aquatic ecosystems have often been significantly altered by multiple impacts. The Guapiaçu-Macacu Hydrographic Complex is an important basin in Rio de Janeiro characterized by distinct ecological zones that make up an Ecological Economic Zoning. This research evaluated ecological upright in segments of this Complex located in Wildlife Conservation Zone (WCZ) and the Agricultural Use Zone (AUZ) using the Protocol Visual Assessment (PVA) and physical, chemicals and microbiology methods. The results showed a significant difference between the points of lowest contamination degree in WCZ and stretches with a greater impact degree in AUZ. The PVA was more sensible than the conventional parameters in the resolution between segments impacted environmentally and impacted middle located in AUZ. This type of evaluation proved to be more effective in environmental monitoring the water quality for watersheds that have their Ecological Economic Zoning Plan. Therefore, the use of physical, chemical and microbiological methods must be complemented by the PVA.

Os ecossistemas aquáticos têm sido frequentemente alterados de maneira significativa por múltiplos impactos. O complexo hidrográfico Guapiaçu-Macacu é uma importante bacia do Rio de Janeiro com zonas ecológicas distintas propostas no Zoneamento Ecológico Econômico. Esse estudo avaliou a integridade ecológica em trechos de rios deste Complexo localizados na Zona de Conservação da Vida Silvestre (ZCVS) e Zona de Uso Agropecuário (ZUAP) por meio do Protocolo de Avaliação Visual (PAV) e das variáveis físicas, químicas e microbiológicas. A integração dos resultados mostrou uma diferença significativa entre os pontos de menor grau de contaminação na ZCVS e os trechos com maior grau de impacto na ZUAP. O PAV foi mais sensível que os parâmetros convencionais entre os trechos ecologicamente impactados e os intermediários localizados na ZUAP. Esse tipo de avaliação mostrou ser eficiente no monitoramento ambiental de bacias hidrográficas que tenham um plano de Zoneamento Ecológico Econômico. Portanto, a utilização de métodos físicos, químicos e microbiológicos pode ser complementada com o PAV.

Aquatic ecosystems have often been significantly altered by multiple impacts. The Guapiaçu-Macacu Hydrographic Complex is an important basin in Rio de Janeiro characterized by distinct ecological zones that make up an Ecological Economic Zoning. This research evaluated ecological upright in segments of this Complex located in Wildlife Conservation Zone (WCZ) and the Agricultural Use Zone (AUZ) using the Protocol Visual Assessment (PVA) and physical, chemicals and microbiology methods. The results showed a significant difference between the points of lowest contamination degree in WCZ and stretches with a greater impact degree in AUZ. The PVA was more sensible than the conventional parameters in the resolution between segments impacted environmentally and impacted middle located in AUZ. This type of evaluation proved to be more effective in environmental monitoring the water quality for watersheds that have their Ecological Economic Zoning Plan. Therefore, the use of physical, chemical and microbiological methods must be complemented by the PVA. [PUBLICATION ABSTRACT]