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Behavioral avoidance tests to evaluate effects of cattle slurry and dairy sludge application to soil¹ Rev. Bras. Ciênc. Solo
Matos-Moreira,Mariana; Niemeyer,Júlia Carina; Sousa,José Paulo; Cunha,Mário; Carral,Emilio.
The application of organic wastes to agricultural soils is not risk-free and can affect soil invertebrates. Ecotoxicological tests based on the behavioral avoidance of earthworms and springtails were performed to evaluate effects of different fertilization strategies on soil quality and habitat function for soil organisms. These tests were performed in soils treated with: i) slurry and chemical fertilizers, according to the conventional fertilization management of the region, ii) conventional fertilization + sludge and iii) unfertilized reference soil. Both fertilization strategies contributed to soil acidity mitigation and caused no increase in soil heavy metal content. Avoidance test results showed no negative effects of these strategies on soil...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic waste management; Ecotoxicity tests; Eisenia andrei; Folsomia candida.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000400041
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Comparison between the efficiency of two bioindicators for determining surface water quality in an urban environment - doi: 10.4025/actascibiolsci.v33i3.7725 Biological Sciences
Oliveira-Filho, Eduardo Cyrino; Embrapa Cerrados; Ramos, Marianni Gonçalves; Centro Universitário de Brasília - UniCEUB; Freire, Ingrid Souza; Centro Universitário de Brasília - UniCEUB; Muniz, Daphne Heloisa de Freitas; Embrapa Cerrados.
This study evaluated the efficiency of two bioindicators, fecal coliforms and ecotoxicity tests, set out in CONAMA Resolution 274/00 and CONAMA Resolution 357/05, in assessment of water quality. For this study, Lake Paranoá, Federal District of Brazil, was chosen, since it is a water body directly contaminated by effluents from a sewage treatment plant. Four sampling points were chosen in accordance with the map of recreational water quality published weekly by CAESB/DF, after analysis of fecal coliforms. Samples from these points were collected for 6 months and tested on Danio rerio fish (acute toxicity) and on the microcrustacean Ceriodaphnia dubia (acute and chronic toxicity), besides measuring chemical and physico-chemical parameters. The data obtained...
Palavras-chave: 2.00.00.00-6 water quality; Ecotoxicity tests; Fecal coliforms; Paranoá lake; Recreational water; Safety 2.00.00.00-6 water quality; Ecotoxicity tests; Fecal coliforms; Paranoá lake; Recreational water; Safety.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/7725
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