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Acute toxicity of copper and cadmium for piauçu, Leporinus macrocephalus, and curimatã, Prochilodus vimboides - DOI: 10.4025/actascibiolsci.v31i3.5069 Biological Sciences
Gomes, Levy Carvalho; UVV; Chippari-Gomes, Adriana Regina; UVV; Oss, Rodrigo Nunes; Fernandes, Luis Fernando Loureiro; UFES; Magris, Rafael de Almeida; UFES.
Ninety-six-hour static bioassays were conducted in the laboratory to determine lethal concentrations (96-h LC50) of copper and cadmium for curimatã (Prochilodus vimboides) and piauçu (Leporinus macrocephalus). The 96-h LC50 of copper were 0.047 and 0.090 mg L-1, and of cadmium 3.16 and 7.42 mg L-1 for curimatã and piauçu, respectively. Curimatã is a preferred indigenous species for toxicological studies in the Doce River basin due to its availability in the hatcheries of the region and high sensitivity to metals.
Tipo: Concentração letal Palavras-chave: 2.00.00.00-6 Ciências Biológicas lethal concentration; Doce river; Southeast region; Fish and metal Toxicologia lethal concentration; Doce river; Southeast region; Fish and metal.
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5069
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Development of an annual drought classification system based on drought severity indexes Anais da ABC (AABC)
LIMA,RAFAEL P.C.; SILVA,DEMETRIUS D. DA; MOREIRA,MICHEL C.; PASSOS,JÉSSICA B.M.C.; COELHO,CLÍVIA D.; ELESBON,ABRAHÃO A.A..
Abstract: In order to characterize the occurrence and intensity of droughts in the Doce River Basin, as well as to develop a system for its classification, four different drought indexes were evaluated: Percent of Normal Precipitation (PNP), Deciles Method (DM), Rainfall Anomaly Index (RAI) and Standardized Precipitation Index (SPI). The indices were calculated annually, based on precipitation data from 89 rainfall stations of the Brazilian National Water Agency (ANA). Nine analysis units (AUs) were determined in the basin and the Thiessen Polygons method was used to obtain the average precipitation in the respective drainage areas. The indices were calculated for each AU and then related to the drought intensity classes. An overall classification of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Climatic condition; Doce river; Precipitation; Rainfall season; River basin.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000100852
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