Data/hora: 12/06/2024 05:56:19

Provedor de dados: | 52
País: | Brazil
Título: | Loss of macronutrients (N, P, K) in the hydrographic basin of the River Ivaí, an affluent of the River Paraná
Autores: | Guiraud,Deborah Maria Corrêa; Lenzi,Ervim; Luchese,Eduardo Bernardi; Fávero,Luzia Otília Bortotti.
Data: | 2004-08-01
Ano: | 2004
Palavras-chave: | Erosion; Macronutrients; Hydrographic basin; Environment.
Resumo: | Influence of some environmental variables in the loss of macronutrients N, P, K, from the hydrographic basin of the River Ivaí were analysed. Water samples of the river were monthly collected for five consecutive days during a year. In terms of total intervals of average monthly values and total average values experiment results, in mg L-1, were: N (0.32-3.22 and 1.65); K (0.73-2.69 and 1.38); P (not detected-0.39 and 0.076); COD (0.21-36.0 and 12.8); O2(dis) (1.89-8.40 and 5.43); and temperature (&amp;#186C) (16.0-30.8 and 24.6); pH (5.18-8.50 and 7.15). Statistical analysis of data showed that quantity of macronutrient (N, K, P) carried off from the hydrographic basin of the River Ivaí were directly correlated to fluviometric levels (caused by rainfall and floodings) at 5% level of significance. Carried off quantities, in t a-1, were N = 25,136.0; K = 21,010.0 and P = 1,161.2.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400019
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132004000400019
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.47 n.4 2004
Fonte: | info:eu-repo/semantics/openAccess