%0 Journal Article
%4 sid.inpe.br/mtc-m21b/2016/06.07.16.37
%2 sid.inpe.br/mtc-m21b/2016/06.07.16.37.44
%@doi 10.1007/s40808-016-0099-5
%@issn 2363-6203
%T Is the maximum velocity of carboxylation (Vcmax) well adjusted for deciduous shrubs in DGVMs? a case study for the Caatinga biome in Brazil
%D 2016
%9 journal article
%A Rezende, Luiz Felipe Campos de,
%A Arenque-Musa, B. C.,
%A Aidar, Saulo T.,
%A Moura, Magna S. B.,
%A Von Randow, Celso,
%A Tourigny, Etienne,
%A Menezes, R. S. C.,
%A Ometto, Jean Pierre Henry Balbaud,
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Universidade de Săo Paulo (USP)
%@affiliation Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
%@affiliation Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Universidade Federal de Pernambuco (UFPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@electronicmailaddress luiz.rezende@inpe.br
%@electronicmailaddress barenque@usp.br
%@electronicmailaddress saulo.aidar@embrapa.br
%@electronicmailaddress magna.moura@embrapa.br
%@electronicmailaddress celso.vonrandow@inpe.br
%@electronicmailaddress etiennetourigny@gmail.com
%@electronicmailaddress rmenezes@ufpe.br
%@electronicmailaddress jean.ometto@inpe.br
%B Modelling Earth Systems and Enrironment
%V 2
%N 42
%K emiarid Dynamic global vegetation models (DGVMs) Vcmax Plant functional types I.
%X Vcmax is the rate of maximum velocity of carboxylation of plants and is considered one of the most critical parameters for changes in vegetation in face of global changes and it has a direct impact on gross primary productivity. Physiological processes are considered the main sources of uncertainties in dynamic global vegetation models (DGVMs). The Caatinga biome, in the semiarid region of northeastern Brazil, is extremely important due to its biodiversity and endemism. In a field work realized in an area of preserved Caatinga forest, measurements of carbon assimilation (in response to light and CO2) were performed on 11 individuals of a native species. These results of Vcmax measurements in Caatinga were compared with parameterization of models, revealing that Vcmax is not well adjusted in several DGVMs. Also, the values obtained in the Caatinga field experiments were very close to empirical values obtained in the Northern hemisphere (Austria). These ecophysiological measurements can contribute in understanding of this biome.
%@language en
%3 rezende_is the.pdf