Análise da qualidade ambiental da barragem do Retiro em comparação com o Açude Boqueirão do Cais (Cuité-PB), através de indicadores biológicos.

Abstract

Water is the most important resource for the survival of humans and animals, in addition, several activities are developed using water. However, over the years, human beings began to excessively exploit natural resources. The reservoirs in the Curimataú region of Paraíba have been showing variations due to several factors, mainly due to climatic and anthropogenic changes. Considering the importance of the pier's Boqueirão dam and the Retô dam, its waters are used for water supply, development of subsistence activities, leisure and fish farming. Both dams are located in the municipality of Cuité, therefore, the study has the general objective of estimating the environmental conditions of the Boqueirão do Cais dam and the Retiro dam through qualitative modifications in the meiofauna groups and comparing them with other studies carried out in water sources. Of region. Collections were carried out during the months of November and December and three collection points were identified per dam. In addition, sediment was collected for analysis of organic matter and particle size. The results showed 4 groups in the first collection at Cais, being Nematoda, Polychaeta, Oligochaeta and Turbellaria. Therefore, in collection 2 Nematoda, Tardigrada, Oligochaeta, Polychaeta and Copepoda were identified. The groups Nematoda, Oligochaeta, Polychaeta, Tardigrada and Copepoda were found in the retreat dam. Organic matter presented a higher content in the Boqueirão do Cais Reservoir compared to the retreat in both collections. The retreat dam presented a higher density and number of organisms per sample, the nematode group was the dominant group in both springs. Therefore, the diversity and equitability indices were similar to studies carried out in other reservoirs in Curimataú in Paraíba.