Encontrados 4 documentos, a visualizar página 1 de 1
Copper-driven avoidance and mortality in temperate and tropicaltadpoles
Araújo, Cristiano V.M.; Shinn, Cândida; Moreira-Santos, Matilde; Lopes, Isabel; Espíndola, Evaldo L. G.; Ribeiro, R.Amphibians have experienced an accentuated population decline in the whole world due to many factors,one of them being anthropogenic contamination. The present study aimed to assess the potential effect ofcopper, as a worldwide and reference contaminant, on the immediate decline of exposed population dueto avoidance and mortality responses in tadpoles of three species of amphibians across climatic zones:a South...
Copper-driven avoidance and mortality in temperate and tropical tadpoles
Araújo, Cristiano V. M.; Shinn, Cândida; Moreira-Santos, Matilde; Lopes, Isabel; Espíndola, Evaldo L. G.; Ribeiro, RuiAmphibians have experienced an accentuated population decline in the whole world due to many factors, one of them being anthropogenic contamination. The present study aimed to assess the potential effect of copper, as a worldwide and reference contaminant, on the immediate decline of exposed population due to avoidance and mortality responses in tadpoles of three species of amphibians across climatic zones: a S...
A toxicidade em ambientes aquáticos: discussão e métodos de avaliação
Costa,Carla Regina; Olivi,Paulo; Botta,Clarice M. R.; Espindola,Evaldo L. G.Aquatic toxicity tests are assays performed with different aquatic organisms of different ecological organization levels. Such tests are a source of information on the toxicity of a given substance or wastewater under controlled conditions, and they complement the physico-chemical analyses. Moreover, they allow one to evaluate the risks resulting from the presence of toxic substances in the environment. Algae, ...
A chemometric study on the accumulation of heavy metals along the Mogi Guaçu ri...
Silva,Maria R. C. da; Honório,Káthia M.; Brigante,Janete; Espíndola,Evaldo L.G.; Vieira,Eny M.; Gambardella,Maria T. P.; Silva,Albérico B. F. daA study on the environmental impacts caused by agricultural and industrial activities along the Mogi Guaçu river basin was carried out. Concentrations of some metals (Fe, Cd, Cu, Cr, Zn, Ni, Pb and Mn) were determined for fifteen collection stations in two different seasons: rainy (March/2001) and dry (June/2001). Pattern recognition methods (Principal Component Analysis and Hierarchical Cluster Analysis) were ...
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