Modeling optimum temperature of leaves of canopy tree species in the Central Amazon
Edgard
Siza
Tribuzy, ESALQ/CENA/USP-INPA, estribuzy@yahoo.com.br
(Presenting)
Jeffrey
Quintim
Chambers, University of Tulane, chambers@tulane.edu
Susan
E.
Trumbore, University of California - Irvine, setrumbo@uci.edu
Plínio
Barbosa de
Camargo, CENA, pcamargo@cena.usp.br
Cristina
Aledi
Felsemburgh, INPA, crisalefel@hotmail.com
Tatiane
da Silva
Reis, INPA, tatis_reis@hotmail.com
Niro
Hguchi, INPA, niro@inpa.gov.br
Joaquim
dos
Santos, INPA, joca@inpa.gov.br
In this study we present the leaf photosynthetic responses to CO2 (Ci), temperature (T) and light (PAR) (A-Ci-T-PAR) curves for top in canopy trees within the Experimental Station of Tropical Forest (ZF-2) of National Institute of Amazon Research (INPA) at 70 km north of Manaus. Measurements were performed with the Licor photosynthesis system LI -6400. The optimum temperature (Topt) for photosynthesis was defined using the Farhquar’s model. The results have shown that mean value for the optimum temperature is 30.83 Celsius (oC), with a maximum of 36.64 oC and a lower of 25.45 oC. The stand variation for the analysis is 2,59.
Submetido por Edgard Siza Tribuzy em 17-MAR-2004
Tema Científico do LBA: CD (Armazenamento e Trocas de Carbono)