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@PhDThesis{Rezende:2015:AnMoEc,
               author = "Rezende, Luiz Felipe Campos de",
                title = "An{\'a}lise e modelagem de ecofisiologia da esp{\'e}cie 
                         Poincianella microphylla da Caatinga em campo e sob 
                         condi{\c{c}}{\~o}es de alta concentra{\c{c}}{\~a}o de CO2",
               school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                 year = "2015",
              address = "S{\~a}o Jos{\'e} dos Campos",
                month = "2015-05-11",
             keywords = "modelos de vegeta{\c{c}}{\~a}o global din{\^a}mica, velocidade 
                         m{\'a}xima de carboxila{\c{c}}{\~a}o (Vcmax), 
                         minera{\c{c}}{\~a}o de dados, produtividade prim{\'a}ria bruta 
                         (PPB), efici{\^e}ncia do uso da {\'a}gua (EUA), dynamic global 
                         vegetation models, maximum velocity of carboxylation (Vcmax), data 
                         mining, gross primary productivity (GPP), water use efficiency 
                         (WUE).",
             abstract = "O bioma Caatinga {\'e} extremamente importante devido {\`a} sua 
                         biodiversidade, seu endemismo e suas dimens{\~o}es (844.453 
                         km\$^{2}\$). Apesar de sua import{\^a}ncia, ainda s{\~a}o 
                         escassas as informa{\c{c}}{\~o}es sobre a fisiologia das 
                         esp{\'e}cies da Caatinga. Medidas de fisiologia vegetal s{\~a}o 
                         cruciais para a calibra{\c{c}}{\~a}o de Modelos de 
                         Vegeta{\c{c}}{\~a}o Global Din{\^a}mica (DGVMs) que s{\~a}o 
                         utilizados para simular as respostas da vegeta{\c{c}}{\~a}o 
                         diante das mudan{\c{c}}as globais. Um dos objetivos deste 
                         trabalho foi calibrar a velocidade m{\'a}xima de 
                         carboxila{\c{c}}{\~a}o (Vc\$_{max}\$) de um DGVM (neste caso, 
                         do modelo INLAND) e desta forma melhorar a 
                         representa{\c{c}}{\~a}o de produtividade e da Efici{\^e}ncia do 
                         Uso da {\'A}gua (EUA) no modelo. Num trabalho de campo realizado 
                         numa {\'a}rea de floresta preservada na Caatinga, localizada em 
                         Petrolina-PE, medidas de assimila{\c{c}}{\~a}o de carbono em 
                         resposta {\`a} luz e {\`a} concentra{\c{c}}{\~a}o de 
                         CO\$_{2}\$ foram realizadas sobre 11 indiv{\'{\i}}duos de 
                         \emph{Poincianella microphylla} (Mart. ex G. Don) L.P. Queiroz, 
                         uma esp{\'e}cie nativa que {\'e} abundante nesta regi{\~a}o. 
                         Estes dados foram utilizados em Regress{\~a}o Linear 
                         M{\'u}ltipla (MLR) e t{\'e}cnicas de minera{\c{c}}{\~a}o de 
                         dados como \emph{Classification And Regression Tree} (CART) e 
                         K-MEANS para se obter uma equa{\c{c}}{\~a}o de ajuste e valores 
                         de m{\'e}dios de Vc\$_{max}\$. Na sequ{\^e}ncia, foi realizada 
                         a simula{\c{c}}{\~a}o de Produtividade Prim{\'a}ria Bruta (PPB) 
                         no INLAND utilizando a equa{\c{c}}{\~a}o obtida na 
                         regress{\~a}o para estimar a Vcmax e os valores m{\'e}dios de 
                         Vc\$_{max}\$ obtidos pelos m{\'e}todos CART, K-MEANS. Os 
                         resultados foram comparados com dados observados de PPB obtidos 
                         com sensores meteorol{\'o}gicos e ambientais instalados numa 
                         torre na mesma {\'a}rea experimental. Verificou-se que a PPB 
                         simulada atingiu 72\% da PPB observada ao se utilizar os valores 
                         de Vcmax calibrada, enquanto que o modelo n{\~a}o calibrado 
                         obteve 42\% da PPB observada. Observou-se tamb{\'e}m que a 
                         simula{\c{c}}{\~a}o da EUA atingiu 92\% da EUA observada. Desta 
                         forma, este trabalho comprova e refor{\c{c}}a a import{\^a}ncia 
                         de utilizar medidas ecofisiol{\'o}gicas obtidas em campo com a 
                         finalidade de calibrar de DGVMs. Diante do aumento da 
                         concentra{\c{c}}{\~a}o de CO\$_{2}\$ na atmosfera num 
                         cen{\'a}rio de mudan{\c{c}}as globais tem se observado e 
                         relatado algumas respostas da vegeta{\c{c}}{\~a}o como o ganho 
                         de biomassa e o aumento da EUA. Com o objetivo de estudar quais 
                         seriam as respostas da vegeta{\c{c}}{\~a}o da Caatinga ao 
                         aumento da concentra{\c{c}}{\~a}o de CO\$_{2}\$ na atmosfera 
                         foi realizado um experimento em laborat{\'o}rio cultivando 
                         pl{\^a}ntulas da esp{\'e}cie: P. \emph{microphylla} em 
                         c{\^a}maras de topo aberto (OTCs) em quatro condi{\c{c}}{\~o}es 
                         diferentes: 1. concentra{\c{c}}{\~a}o de CO\$_{2}\$ numa 
                         atmosfera ambiente (400 ppm) e sob estresse h{\'{\i}}drico; 2. 
                         concentra{\c{c}}{\~a}o de CO\$_{2}\$ numa atmosfera 
                         enriquecida (800 ppm) e sob estresse h{\'{\i}}drico; 3. 
                         concentra{\c{c}}{\~a}o de CO\$_{2}\$ numa atmosfera ambiente 
                         (400 ppm) e as pl{\^a}ntulas submetidas a regas a cada dois dias; 
                         4. concentra{\c{c}}{\~a}o de CO2 numa atmosfera enriquecida (800 
                         ppm) e as pl{\^a}ntulas submetidas a regas a cada dois dias. Os 
                         resultados corroboram diversos relatos registrados na literatura 
                         como o ganho de biomassa e o aumento da EUA para plantas 
                         cultivadas numa elevada concentra{\c{c}}{\~a}o de CO\$_{2}\$. 
                         S{\~a}o respostas conhecidas para a vegeta{\c{c}}{\~a}o de 
                         outros biomas, no entanto ainda eram desconhecidas para 
                         esp{\'e}cies da Caatinga. ABSTRACT: The Caatinga biome is 
                         extremely important because of its biodiversity, its endemism and 
                         its dimensions (844,453 km\$^{2}\$). Despite its importance, 
                         there is little information about the physiology of the species of 
                         the Caatinga. Plant physiology measurements are crucial to the 
                         calibration of Dynamic Global Vegetation Models (DGVMs) that are 
                         used to simulate the responses of vegetation in face of global 
                         changes. One goal of this study was to calibrate the maximum 
                         velocity of carboxylation (Vc\$_{max}\$) of a DGVM (in this 
                         case, the INLAND model) and thus improve the representation of 
                         productivity in the model. In a fieldwork carried out in a 
                         preserved forest area of Caatinga located in Petrolina, 
                         Pernambuco, measurements of carbon assimilation in response to 
                         light and CO\$_{2}\$ concentration were performed on 11 
                         individuals of \emph{Poincianella microphylla} (Mart. Ex G. Don) 
                         LP Queiroz, one native species that is abundant in this region. 
                         These data were used in Multiple Linear Regression (MLR) and data 
                         mining techniques Classification and Regression Tree (CART) and 
                         K-means to obtain a fit equation and Vc\$_{max}\$ average 
                         values. Then, Gross Primary Productivity (GPP) was simulated in 
                         INLAND using the average values of Vc\$_{max}\$ obtained by 
                         CART, K-MEANS methods, or calculated by the regression equation. 
                         The results were compared with observed data of GPP obtained with 
                         meteorological and environmental sensors installed in a tower in 
                         Petrolina. It was found that the simulated GPP reached 72\% of 
                         the observed GPP when using the calibrated values of 
                         Vc\$_{max}\$, while the uncalibrated model obtained 42\% of the 
                         observed GPP. Thus, this work reinforces the importance of using 
                         ecophysiological measurements for calibration of the DGVMs. In 
                         face of increased CO\$_{2}\$ concentrations in the atmosphere in 
                         a scenario of global change some responses of vegetation as 
                         biomass gain and the increase in Water Use Efficiency (WUE) have 
                         been observed and reported. In order to study what is the response 
                         of the vegetation of the Caatinga to increased CO\$_{2}\$ 
                         concentration in the atmosphere a laboratory experiment was 
                         conducted cultivating seedlings of the species P. 
                         \emph{microphylla} in open-top chambers (OTCs) in four different 
                         conditions: 1. CO\$_{2}\$ concentration in ambient atmosphere 
                         (400 ppm) and under water stress; 2. CO\$_{2}\$ concentration in 
                         enriched atmosphere (800 ppm) and under water stress; 3. 
                         CO\$_{2}\$ concentration in ambient atmosphere (400 ppm) and 
                         with the seedlings subjected to irrigation every two days; 4. 
                         CO\$_{2}\$ concentration in enriched atmosphere (800 ppm) and 
                         with the seedlings subjected to irrigation every two days. The 
                         results corroborate many reports presented in the literature as 
                         the gain of biomass and increasing of WUE to plants grown in a 
                         high concentration of CO\$_{2}\$. These are known responses for 
                         vegetation from other biomes, however were still unknown to 
                         species of Caatinga.",
            committee = "Alval{\'a}, Pl{\'{\i}}nio Carlos (presidente) and Ometto, Jean 
                         Pierre Henry Balbaud (orientador) and Randow, Celso Von 
                         (orientador) and Domingues, Tomas Ferreira and Menezes, 
                         R{\^o}mulo Sim{\~o}es Cezar",
           copyholder = "SID/SCD",
         englishtitle = "Analysis and modeling of ecophysiology of specie Poincianella 
                         Microphylla from Caatinga realized in field and under conditions 
                         of high CO2 concentration",
             language = "pt",
                pages = "179",
                  ibi = "8JMKD3MGP8W/3J3CB32",
                  url = "http://urlib.net/rep/8JMKD3MGP8W/3J3CB32",
           targetfile = "publicacao.pdf",
        urlaccessdate = "28 nov. 2020"
}


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