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Comparação das comunidades de Entomobryidae e Isotomidae (Collembola) entre plantio direto em três níveis de fertilidade, plantio convencional e um ecossistema natural (campo nativo) em Ponta Grossa, Paraná, Brasil

Comparison of the comniunitics of Entomobryidae and Isotomidae (Collembola) among no-tillage in three levels of fertility, conventional tillage and a natural ecosystem (native grassland) in Ponta Grossa, Paraná, Brazil

Resumo

This work had as objective to compare the communities of Entomobryidae and Isotomidae (Collembola) among no-tillage in three fertility levels, conventional tillage and a natural ecosystem (native grassland). In the no-tillage in low fertility and medium fertility Entomobryidae and Isotomidae had populational picks in the winter and in the summer. In the no-tillage in area of high fertility, there was a populational pick for both families in the summer. In relation to the conventional tillage, Entomobryidae had a populational pick in the winter, and Isotomidae in the winter and in the summer. In the natural ecosystem Entomobryidae presented populational picks in the winter and in the summer and Isotomidae had regular populational fluctuation along the period of the experiment. The final mean density of Entomobryidae was larger in the natural ecosystem, proceeded by the treatments of no-tillage and finally, for the conventional tillage. In relation to Isotomidae, the no-tillage in area of low fertility was superior, coming the conventional tillage soon after, the no-tillage in médium and high fertility, and, finally, the natural ecosystem.

Collembola; Entomobryidae; Isotomidae; no-tillage; conventional tillage


Collembola; Entomobryidae; Isotomidae; no-tillage; conventional tillage

Comparação das comunidades de Entomobryidae e Isotomidae (Collembola) entre plantio direto em três níveis de fertilidade, plantio convencional e um ecossistema natural (campo nativo) em Ponta Grossa, Paraná, Brasil

Comparison of the comniunitics of Entomobryidae and Isotomidae (Collembola) among no-tillage in three levels of fertility, conventional tillage and a natural ecosystem (native grassland) in Ponta Grossa, Paraná, Brazil

Klaus Dieter SautterI; Honório Roberto dos SantosII; Paulo Justiniano Ribeiro JúniorIII

ICurso de Pós-Graduação em Engenharia Florestal, Setor de Ciências Agrárias, Universidade Federal do Paraná. Caixa Postal 2959, 80001-970 Curitiba, Paraná, Brasil

IIDCA/CEUD, Universidade Federal de Mato Grosso do Sul. Caixa Postal 533, 79804-970 Dourados, Mato Grosso do Sul, Brasil

IIIDepartamento de Estatística, Universidade Federal do Paraná. Caixa Postal 19081, 81531-990 Curitiba, Paraná, Brasil

ABSTRACT

This work had as objective to compare the communities of Entomobryidae and Isotomidae (Collembola) among no-tillage in three fertility levels, conventional tillage and a natural ecosystem (native grassland). In the no-tillage in low fertility and medium fertility Entomobryidae and Isotomidae had populational picks in the winter and in the summer. In the no-tillage in area of high fertility, there was a populational pick for both families in the summer. In relation to the conventional tillage, Entomobryidae had a populational pick in the winter, and Isotomidae in the winter and in the summer. In the natural ecosystem Entomobryidae presented populational picks in the winter and in the summer and Isotomidae had regular populational fluctuation along the period of the experiment. The final mean density of Entomobryidae was larger in the natural ecosystem, proceeded by the treatments of no-tillage and finally, for the conventional tillage. In relation to Isotomidae, the no-tillage in area of low fertility was superior, coming the conventional tillage soon after, the no-tillage in médium and high fertility, and, finally, the natural ecosystem.

Key words: Collembola, Entomobryidae, Isotomidae, no-tillage, conventional tillage

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

Recebido em 29.VIII.1997; aceito em 25.I.1999.

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Datas de Publicação

  • Publicação nesta coleção
    10 Jul 2009
  • Data do Fascículo
    Mar 1999

Histórico

  • Recebido
    29 Ago 1997
  • Aceito
    25 Jan 1999
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