spelling |
2023-01-18T12:28:36Z2023-01-18T12:28:36Z2020-02-27112161171https://doi.org/10.6008/CBPC2179-6858.2020.002.00182179-6858http://hdl.handle.net/1843/48974A água possui grande importância para todas as formas de vida existentes no planeta, por estar presente em diversos processos físicos, químicos e biológicos. Entretanto, a sociedade humana tem explorado este recurso natural de forma não sustentável, ocasionando graves problemas relacionados à baixa qualidade da água e, consequentemente, sua escassez. Diante disso, este estudo propôs realizar o diagnóstico da qualidade ambiental de um trecho do Rio Pacuí, município de Coração de Jesus, mesorregião Norte do Estado de Minas Gerais. Utilizando o índice de qualidade de água BMWP, juntamente ao Protocolo de Avaliação Rápida de Rios (PAR). A amostragem dos macroinvertebrados para aplicação do índice BMWP foram obtidas realizando arrastos de 1 m utilizando rede em ‘D’, em áreas de correnteza e áreas de remanso, em um transecto de 50 m, em 5 pontos ao longo do rio. Em cada ponto foram avaliados os 22 parâmetros estabelecidos no PAR para avaliação do ambiente e ainda foram aferidas as características físicas como largura, vazão e profundidade do rio em cada ponto. Foram identificados 1031 invertebrados, de 11 ordens e 34 famílias. A maioria dos organismos encontrados são insetos imaturos, tendo destaque para as ordens Trichoptera, Ephemeroptera e Odonata, que são organismos sensíveis a alterações do ambiente e Diptera que foi a ordem mais representativa em abundância. As características do rio influenciaram a abundância de macroinvertebrados, diminuindo com o aumento da vazão e aumentando com o aumento da profundidade e largura do rio. Os resultados para os índices biológicos aplicados foram correspondentes. O índice BMWP classificou a água dos pontos C, E e D como ‘excelente’, e a água dos pontos A e B como ‘boa’. O PAR classificou o trecho do rio nos pontos C, E e D como ‘ambiente natural’, e os pontos A e B como ‘ambiente alterado’. Estes resultados demonstram que os macroinvertebrados bentônicos são influenciados pelas características do rio, contudo, a qualidade do habitat do entorno é o principal fator que afeta a qualidade da água na bacia do rio Pacuí. O diagnóstico da qualidade ambiental do rio Pacuí, utilizando como ferramentas índices biológicos, permite concluir que a água do trecho analisado varia entre boa e excelente, apresentando melhor qualidade nos pontos à montante da estrada principal que corta o rio na região.Water is of great importance to all life forms on the planet, being present in various physical, chemical and biological processes. However, human society has been exploiting this natural resource unsustainably, causing serious problems related to the poor quality of water resources and its scarcity. Therefore, this study proposes to diagnose the environmental quality of a river stretch called Pacuí, municipality in Coração de Jesus, North mesorregion of Minas Gerais. Using the BMWP water quality index, together with the Rapid River Assessment Protocol (PAR). Sampling of macroinvertebrates for application of the BMWP index was obtained by performing 1m trawls using ‘D’ net, in current and backwater areas, in a 50 meter transect, at five points along the river. At each point the 22 parameters established in the PAR were evaluated for environmental assessment and the physical characteristics such as width, flow and depth of the river at each point were measured. It was identified 1031 invertebrates from 11 orders and 34 families. Most of the organisms found are immature insects, highlighting the orders Trichoptera, Ephemeroptera and Odonata, which are organisms sensitive to environmental changes and Diptera, which was the most representative order in abundance. River characteristics influenced the abundance of macroinvertebrates, decreasing with increasing flow and increasing with increasing river depth and width. The results for the applied biological indices were corresponding. The BMWP Index rated water from points C, E and D as ‘excellent’ and water from points A and B as ‘good’. The PAR classified the river stretch in points C, E and D as ‘natural environment’, and points A and B as ‘altered environment’. These results demonstrate that benthic macroinvertebrates are influenced by river characteristics. However, the quality of the surrounding habitat is the main factor affecting water quality in the Pacuí river basin. The diagnosis of the environmental quality of the Pacuí River, using biological indexes as tools, allowed to conclude that the water of the analyzed stretch varies between good and excellent, presenting better quality in the points upstream of the main road that crosses the river in the region.porUniversidade Federal de Minas GeraisUFMGBrasilICA - INSTITUTO DE CIÊNCIAS AGRÁRIASRevista Ibero-Americana de Ciências AmbientaisÁgua - QualidadeÁgua - AnáliseIndicadores biológicosQualidade ambientalMinas Gerais, NorteDiagnóstico ambientalqualidade da águaRelação água-solo-planta-climaDiagnóstico da qualidade ambiental de trechos do rio Pacuí, município de Coração de Jesus, Norte de Minas GeraisDiagnosis of the environmental quality of races in river Pacuí, municipality of the Coração of Jesus, north of Minas Geraisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://www.sustenere.co/index.php/rica/article/view/CBPC2179-6858.2020.002.0018Anielle Cristina Fonseca PereiraFlávio Pimenta de FigueiredoCarlos Augusto PereiraPedro Henrique Figueiredo da Silveirainfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGLICENSELicense.txtLicense.txttext/plain; charset=utf-82042https://repositorio.ufmg.br/bitstream/1843/48974/1/License.txtfa505098d172de0bc8864fc1287ffe22MD51ORIGINALDiagnóstico da qualidade ambiental de trechos do rio Pacuí, município de Coração de Jesus, norte de Minas Gerais.pdfDiagnóstico da qualidade ambiental de trechos do rio Pacuí, município de Coração de Jesus, norte de Minas Gerais.pdfapplication/pdf1176613https://repositorio.ufmg.br/bitstream/1843/48974/2/Diagn%c3%b3stico%20da%20qualidade%20ambiental%20de%20trechos%20do%20rio%20Pacu%c3%ad%2c%20munic%c3%adpio%20de%20Cora%c3%a7%c3%a3o%20de%20Jesus%2c%20norte%20de%20Minas%20Gerais.pdff177c1cf0671d4df59d9b5dd1743b5c3MD521843/489742023-01-18 09:28:36.277oai:repositorio.ufmg.br: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Repositório InstitucionalPUBhttps://repositorio.ufmg.br/oaiopendoar:2023-01-18T12:28:36Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false
|