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Aplicação do Índice De Conformidade ao Enquadramento – ICE em trecho da bacia rio Ipojuca localizada em Pernambuco, Brasil
(2024-09-25) Assis, Pedro Henrique Ribeiro de; Tavares, Rosângela Gomes; http://lattes.cnpq.br/2497390236537569; http://lattes.cnpq.br/3373353448528297
O desenvolvimento das regiões urbanas e industriais ocasionaram significativos impactos na qualidade das águas doces, devido ao lançamento sem tratamento adequado de efluentes e despejo de resíduos. A consolidação de um enquadramento dos corpos hídricos é essencial para nortear o monitoramento de potenciais empreendimentos poluidores. No entanto, isto é limitado a metodologias que identifiquem a condição atual dos corpos d’água. O Índice de Conformidade ao Enquadramento – ICE realiza a caracterização da condição da qualidade de água conforme metas estabelecidas por legislação vigente. Para este estudo foi avaliado a conformidade com base nos limites estabelecidos para Classe 2 pela resolução Conama 357 de 2005. O presente trabalho realizou a aplicação do ICE em trecho da Bacia do Rio Ipojuca no estado de Pernambuco a fim comparativo com o procedimento da Agência Estadual de Meio Ambiente de Pernambuco – CPRH. Os dados no período de 2018 a 2023 para os pontos do rio Ipojuca selecionados provieram da CPRH e os indicadores escolhidos foram contrastados com base na resolução Conama 357 para o cálculo do ICE. Nenhuma estação está em conformidade com os padrões estipulados pela Classe 2 da Conama 357. Com base nos resultados obtidos todas as estações obtiveram médias do ICE em todo período apontando para uma condição de qualidade da água estando quase sempre em não conformidade. A estação IP-49 foi a que apresentou pior valor de ICE. As metodologias revelaram-se harmônicas em suas avaliações, baseando-se na média do ICE de cada estação durante o período de estudo e nas classificações predominantes determinadas anualmente pela CPRH.
Condições operacionais de estruturas hídricas destinadas ao armazenamento de água no Vale do Rio Pajeú
(2018) Rocha, Ana Karlla Penna; Barros Júnior, Genival; http://lattes.cnpq.br/4379675294862211; http://lattes.cnpq.br/9119539861018560
One of the problems related to water resources in Brazil, beyond the unconscious use of the water and overused by population, it’s your irregular geographical distribuition, so that only 3% of these resources are located in the Norteast, region that owns 27,3% of the population of the country and is characterized by high annual evaporations and low precipitation rates, which are even smaller in the Semiaridregion.In this context, one of the most important rivers of the state of Pernambuco and that constitutes the greater hydrographic basin is the Pajeú, which is born in the city of Brejinho -PE and flowsinto the Itaparica dam, with a river mouth located between the cities of Floresta and Itacuruba. Because it’s an intermittent river, one of the main initiatives of the public power to increase the water supply over time has been and continues to be the construction of large hydraulic works such as dams, whose purpose it’s to store water for supplying the cities and for the cultivation of land and animal breeding. Along the Pajeú River there are 30 reservoirs with a capacity of more than 1 million m³ of water, and the Serrinha dam has the highest storage potential with 311 million m³. Due to the lack of information on the current state of these water structures, the present work proposed to raise, between august and december of the 2018, the state of conservation and the operating dynamics of sixof the main water bodies of the Pajeú River and its tributaries.Therefore were done surveys in locoof the structural and operational aspectsof this dams, as well as approaches were taken with the managers of eachone.It was found that most of the structures shows a worrying derelictionscenario, with Brotas and Jazigo dams being the most serious cases and Saco I, which has the best condition among all of them, however all can be classified as high associated potential harm and high category therefore, prone to disruption if they remain without the short-term contemplation of a preventive management and maintenance plan.
Impactos ambientais antes, durante e pós período de lockdown (COVID-19) nas águas dos rios Capibaribe e Tejipió, Brasil
(2023-09-05) Oliveira, Maria Eduarda Gonçalves de; Almeida, Gledson Luiz Pontes de; Silva, Marcos Vinícius da; http://lattes.cnpq.br/6652290054024513; http://lattes.cnpq.br/2328849810614673; http://lattes.cnpq.br/3243908417015201
The coronavirus pandemic has seriously affected human health, although some improvements on environmental indexes have temporarily occurred, due to changes on socio-cultural and economic standards. The objective of this study was to evaluate the impacts of the coronavirus and the influence of the lockdown associated with rainfall on the water quality of the Capibaribe and Tejipió rivers, Recife, Northeast Brazil, using cloud remote sensing on the Google Earth Engine (GEE) platform. The study was carried out based on eight representative images from Sentinel-2. Among the selected images, two refer to the year 2019 (before the pandemic), three refer to 2020 (during a pandemic), two from the lockdown period (2020), and one for the year 2021. The land use and land cover (LULC) and slope of the study region were determined and classified. Water turbidity data were subjected to descriptive and multivariate statistics. When analyzing the data on LULC for the riparian margin of the Capibaribe and Tejipió rivers, a low permanent preservation area was found, with a predominance of almost 100% of the urban area to which the deposition of soil particles in rivers are minimal. The results indicated that turbidity values in the water bodies varied from 6 mg. L− 1 up to 40 mg. L− 1. Overall, the reduction in human based activities generated by the lockdown enabled improvements in water quality of these urban rivers.
Tipos funcionais de macrófitas aquáticas indicadoras de poluição urbana
(2016) Silva, Will Jones Moura Soares da; Pimentel, Rejane Magalhães de Mendonça; http://lattes.cnpq.br/6974715752532263; http://lattes.cnpq.br/0042019610573527