Relationships between land use and water quality obtained for the evaluation of genotoxic effects in plant bioindicators

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Anthropic activities as well as land use and occupation are closely linked to water and soil quality. An alternative to assess their influence on water quality in water bodies is through biomonitoring using Allium cepa as a bioindicator organism. This technique allows the detection of cytogenetic abnormalities in Allium cepa root meristematic cells after contact with analyzed water samples. Thus, we evaluated the genotoxic potential of water samples from the Rio das Antas (Antas River) along the urban perimeter of the city of Irati, Paraná, Brazil. With the aid of GeoEye Satellite high-resolution fused orbital images, we searched for possible relationships between the use and occupation of land around this river. Biomonitoring was performed at three different sampling points. Statistical equality between the negative control and Point 1 and between Points 2 and 3 was obtained using Fisher's test and a Principal Coordinate Analysis (PCoA). The former presented a low frequency of abnormalities chromosomes and the latter presented larger averages. In addition, Point 1 had strong influence of tree vegetation. Points 2 and 3, demonstrated a strong influence of urbanized area, with significant degradation of permanent preservation areas (áreas de preservação permanente – (APP). The results showed remarkable anthropogenic interference to the ecosystem. Furthermore, this indicates importance of an APP watercourses functioning to preserve the quality of the water resources.




Sieklicki, J., Bione, N. C. P., de Oliveira-Filho, P. C., de Souza, V. F., & Martins, K. G. (2019). Relationships between land use and water quality obtained for the evaluation of genotoxic effects in plant bioindicators. Revista Ambiente e Agua, 14(2), 1–11.

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