Adaption of rapid assessment protocol for the monitoring and environmente assessment to be used in grassland and shrubby grassland / ADEQUAÇÃO DE UM PROTOCOLO DE AVALIAÇÃO RÁPIDA PARA O MONITORAMENTO E AVALIAÇÃO AMBIENTAL DE CURSOS DÁGUA INSERIDOS EM CAMPOS RUPESTRES

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

This work aims to adapt rapid assessment protocol of rivers in order to be used in grassland and shrubby grassland of the savanna biome of the Minas Gerais highlands (cerrado biome), taking as a reference situation the environmental conditions found in the interior of the Parque Estadual do Itacolomi, Ouro Preto - Minas Gerais, Brazil. Similar protocols have been used in the United States, Great Britain and Australia in water resources monitoring programs. The following parameters were proposed: available substrate and/or habitat; pool substrate; embeddedness; velocity/depth regime; pool variability; sediment deposition; channel flow status; channel alteration; channel sinuosity; frequency of riffles; bank stability; vegetative protection and nearby channel vegetation status. For each parameter, a rank from 0 up to 20, corresponding to the environmental condition, was attributed and the values were distributed according to the environmental stress gradient verified at the evaluation site, which could vary from a condition considered very bad to excellent condition, passing through intermediate regular and good situations. After the adaptation of the protocol, an environmental monitoring workshop was offered. In order to evaluate applicability, clarity and possible inadequacy of the parameters proposed, 42 volunteers were selected in order to apply the protocol in two selected segments of the study area. The pattern of the volunteers answers was consistent, reflecting good understanding of the proposed parameters. No significant divergence was observed in the pattern analyzed. After the calibration of the protocol, an environmental evaluation was carried out in selected segments of the study area characterized by different levels of environmental alteration. In summary, adaptation and use of the protocol can be considered steps for the preservation of water resources. It can also be used in environmental impact assessment studies of degraded areas and as a tool to be used by the community in managing and monitoring of water resources.

ASSUNTO(S)

engenharias 1. geologia ambiental - teses. 2. rios - teses. 3. parque estadual do itacolomi (ouro preto, mg) - teses. i. universidade federal de ouro preto. ii. título.

ACESSO AO ARTIGO

Documentos Relacionados