Approximate Entropy as a measure of complexity in sap flow temporal dynamics of two tropical tree species under water deficit

Anais da Academia Brasileira de Ciências

Gustavo M. Souza¹  Rafael V. Ribeiro¹  Mauro G. Santos¹  Henrique L. Ribeiro¹  Ricardo F. Oliveira¹ 

[1] ,Universidade de São Paulo Escola Superior de Agricultura Luiz de Queiroz Departamento de Ciências BiológicasPiracicaba SP ,Brasil

关键词: Approximate Entropy;    complexity;    sap flow;    time series analysis;    tropical ecophysiology;    water deficit;    Entropia Aproximada;    complexidade;    fluxo de seiva;    análise de séries temporais;    ecofisiologia tropical;    deficiência hídrica;   

DOI  :  10.1590/S0001-37652004000300015

来源: SciELO

【 摘 要 】

Approximate Entropy (ApEn), a model-independent statistics to quantify serial irregularities, was used to evaluate changes in sap flow temporal dynamics of two tropical species of trees subjected to water deficit. Water deficit induced a decrease in sap flow of G. ulmifolia, whereas C. legalis held stable their sap flow levels. Slight increases in time series complexity were observed in both species under drought condition. This study showed that ApEn could be used as a helpful tool to assess slight changes in temporal dynamics of physiological data, and to uncover some patterns of plant physiological responses to environmental stimuli.

【 授权许可】

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