Experimento de mineralização aeróbia para ambientes aquáticos: determinação do número de réplicas - DOI: 10.4025/actascibiolsci.v25i2.1975

Irineu Bianchini Junior; Alexandre Luccas Bitar; José Roberto Verani; Alberto Carvalho Peret

doi:10.4025/actascibiolsci.v25i2.1975

Aerobic mineralization experiment for aquatic ecosystems: determination of replicas number- DOI: 10.4025/actascibiolsci.v25i2.1975

Irineu Bianchini Junior UFSCAR
Alexandre Luccas Bitar UFSCAR
José Roberto Verani UFSCAR
Alberto Carvalho Peret UFSCAR

DOI: https://doi.org/10.4025/actascibiolsci.v25i2.1975

Abstract

This study aimed to test methodological aspects related to the kinetic use of oxygen consumption as an index of mineralization process in aquatic ecosystems. The experiment comprised 10 bottles (5 liters) with water samples from Monjolinho reservoir (22º 00’S and 47º 54’W) enriched with glucose (20 mg.L^-1). The solutions were previously oxygen saturated and during 33 days the dissolved oxygen concentration and the temperature were registered. The anaerobic processes were avoided by reaerations, when the dissolved oxygen concentrations were near to 2.0 mg.L^-1. Concerning to the fitting of the grouping data, the total amount of oxygen used in the mineralization processes was 12.4 mg.L^-1, with the daily rates of consumption (k1) and reaeration (k2) equals to 7.7 and 3.7%. The non-parametric analysis (Kruskal-Wallis) showed that the use of 1 bottle is sufficient to describe the temporal oxygen consumption evolution through the adopted experimental conditions. However, due to experimental variations, the use of 3 bottles was suggested

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Author Biography

Irineu Bianchini Junior, UFSCAR

possui graduação em Licenciatura Em Ciências Biológicas pela Universidade Federal de São Carlos (1980) , graduação em Bacharelado em Ciências Biológicas pela Universidade Federal de São Carlos (1978) , mestrado em Ecologia e Recursos Naturais pela Universidade Federal de São Carlos (1982) , doutorado em Ecologia e Recursos Naturais pela Universidade Federal de São Carlos (1985) e pos-doutorado pela Universidade Federal de São Carlos (1986) . Atualmente é professor titular da Universidade Federal de São Carlos. Tem experiência na área de Ecologia , com ênfase em Ecologia Aplicada. Atuando principalmente nos seguintes temas: macrófitas aquáticas, substâncias húmicas, Ciclo do Carbono, ecossistemas aquáticos, matéria orgânica e Detritos

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Published

2008-04-17

How to Cite

Bianchini Junior, I., Bitar, A. L., Verani, J. R., & Peret, A. C. (2008). Aerobic mineralization experiment for aquatic ecosystems: determination of replicas number- DOI: 10.4025/actascibiolsci.v25i2.1975. Acta Scientiarum. Biological Sciences, 25(2), 245-251. https://doi.org/10.4025/actascibiolsci.v25i2.1975

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Issue

Vol 25 No 2 (2003)

Section

Biology Sciences

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