Acessibilidade / Reportar erro

Evaluation of a portable chlorophyll meter to estimate chlorophyll concentrations in leaves of tropical wood species from Amazonian forest

Avaliação de um medidor portátil de clorofila para estimar as concentrações de clorofilas em folhas de espécies lenhosas da floresta Amazônica

A portable chlorophyll meter can be an important tool to estimating chlorophyll contents in leaves of tree species under field conditions. The method is quick and non-destructive compared to the classic chemical methods of pigment extraction. The aim of this work was to evaluate the performance of a portable chlorophyll meter (CCM-200, Opti-Science) to estimate the concentrations of chloroplastid pigments and the fraction of photosynthetically active irradiance absorbed by leaves (α) in four tropical wood species from Amazonian forest. The results shown positive correlation between the chlorophyll contente index (CCI) readings and concentrations of Chl a (P < 0.0001; r² = 0.904), Chl b (P< 0.0001; r² = 0.803), Chl tot (P< 0.0001; r² = 0.923) and α (P< 0.0001; r² = 0.886), suggesting that the portable chlorophyll meter can be an effective tool for the relative estimation of chlorophyll concentrations and the fraction of the photosynthetically active irradiance absorbed by the leaves of tropical tree species.

Chlorophyll contents; chloroplastid pigments; photosynthetically active radiation


Instituto de Pesquisas Ambientais Av. Miguel Stefano, 3687 , 04301-902 São Paulo – SP / Brasil, Tel.: 55 11 5067-6057, Fax; 55 11 5073-3678 - São Paulo - SP - Brazil
E-mail: hoehneaibt@gmail.com