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Registro Completo |
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
03/10/2016 |
Data da última atualização: |
17/01/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
REZENDE, L. F. C.; ARENQUE-MUSA, B. C.; MOURA, M. S. B. de; AIDAR, S. de T.; RANDOW, C. V.; MENEZES, R. S. C.; OMETTO, J. P. B. H. |
Afiliação: |
L. F. C. REZENDE, INPE; B. C. ARENQUE-MUSA, USP; MAGNA SOELMA BESERRA DE MOURA, CPATSA; SAULO DE TARSO AIDAR, CPATSA; C. VON RANDOW, INPE; R. S. C. MENEZES, UFPE; J. P. B. H. OMETTO, INPE. |
Título: |
Calibration of the maximum carboxylation velocity (Vcmax) using data mining techniques and ecophysiological data from the Brazilian Semiarid region, for use in Dynamic Global Vegetation Models. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Brazilian Journal of Biology, v. 76, n. 2, p. 341-351, 2016. |
DOI: |
10.1590/1519-6984.14414 |
Idioma: |
Inglês |
Conteúdo: |
The semiarid region of northeastern Brazil, the Caatinga, is extremely important due to its biodiversity and endemism. Measurements of plant physiology are crucial to the calibration of Dynamic Global Vegetation Models (DGVMs) that are currently used to simulate the responses of vegetation in face of global changes. In a field work realized in an area of preserved Caatinga forest located in Petrolina, Pernambuco, measurements of carbon assimilation (in response to light and CO2) were performed on 11 individuals of Poincianella microphylla, a native species that is abundant in this region. These data were used to calibrate the maximum carboxylation velocity (Vcmax) used in the INLAND model. The calibration techniques used were Multiple Linear Regression (MLR), and data mining techniques as the Classification And Regression Tree (CART) and K-MEANS. The results were compared to the UNCALIBRATED model. It was found that simulated Gross Primary Productivity (GPP) reached 72% of observed GPP when using the calibrated Vcmax values, whereas the UNCALIBRATED approach accounted for 42% of observed GPP. Thus, this work shows the benefits of calibrating DGVMs using field ecophysiological measurements, especially in areas where field data is scarce or non-existent, such as in the Caatinga |
Palavras-Chave: |
DGVMs; Dynamic global vegetation models; Modelos de Vegetação Globais Dinâmicos; Mudanças Climáticas; Natural resource; Produtividade primária bruta. |
Thesagro: |
Biodiversidade; Caatinga; Vegetação. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/148208/1/Magna-3.pdf
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Marc: |
LEADER 02378naa a2200313 a 4500 001 2053978 005 2017-01-17 008 2016 bl uuuu u00u1 u #d 024 7 $a10.1590/1519-6984.14414$2DOI 100 1 $aREZENDE, L. F. C. 245 $aCalibration of the maximum carboxylation velocity (Vcmax) using data mining techniques and ecophysiological data from the Brazilian Semiarid region, for use in Dynamic Global Vegetation Models.$h[electronic resource] 260 $c2016 520 $aThe semiarid region of northeastern Brazil, the Caatinga, is extremely important due to its biodiversity and endemism. Measurements of plant physiology are crucial to the calibration of Dynamic Global Vegetation Models (DGVMs) that are currently used to simulate the responses of vegetation in face of global changes. In a field work realized in an area of preserved Caatinga forest located in Petrolina, Pernambuco, measurements of carbon assimilation (in response to light and CO2) were performed on 11 individuals of Poincianella microphylla, a native species that is abundant in this region. These data were used to calibrate the maximum carboxylation velocity (Vcmax) used in the INLAND model. The calibration techniques used were Multiple Linear Regression (MLR), and data mining techniques as the Classification And Regression Tree (CART) and K-MEANS. The results were compared to the UNCALIBRATED model. It was found that simulated Gross Primary Productivity (GPP) reached 72% of observed GPP when using the calibrated Vcmax values, whereas the UNCALIBRATED approach accounted for 42% of observed GPP. Thus, this work shows the benefits of calibrating DGVMs using field ecophysiological measurements, especially in areas where field data is scarce or non-existent, such as in the Caatinga 650 $aBiodiversidade 650 $aCaatinga 650 $aVegetação 653 $aDGVMs 653 $aDynamic global vegetation models 653 $aModelos de Vegetação Globais Dinâmicos 653 $aMudanças Climáticas 653 $aNatural resource 653 $aProdutividade primária bruta 700 1 $aARENQUE-MUSA, B. C. 700 1 $aMOURA, M. S. B. de 700 1 $aAIDAR, S. de T. 700 1 $aRANDOW, C. V. 700 1 $aMENEZES, R. S. C. 700 1 $aOMETTO, J. P. B. H. 773 $tBrazilian Journal of Biology$gv. 76, n. 2, p. 341-351, 2016.
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Embrapa Semiárido (CPATSA) |
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Registro Completo
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
07/01/2011 |
Data da última atualização: |
29/05/2018 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
BOREGAS, K. G. B.; WAQUIL, J. M.; MENDES, S. M.; CARVALHO, T. M. F. de; FERNANDES, G. W.; SANTOS, F. A. |
Afiliação: |
KATIA GISELE BRASIL BOREGAS, UFMG; JOSE MAGID WAQUIL, CNPMS; SIMONE MARTINS MENDES, CNPMS; THAIS M. F. DE CARVALHO, UNIFEMM; GERALDO WILSON FERNANDES, UFMG; FABÍOLA A. SANTOS, UFLA. |
Título: |
Efeito da cobertura vegetal e manejo cultural na captura de adultos e na incidência de larvas de Spodoptera frugiperda (J. E. Smith, 1797). |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 23., 2010, Natal. Anais... Natal: Sociedade Brasileira de Entomologia, 2010. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Thesagro: |
Praga de planta. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/24993/1/CBE-9.pdf
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Marc: |
LEADER 00688nam a2200181 a 4500 001 1871860 005 2018-05-29 008 2010 bl uuuu u00u1 u #d 100 1 $aBOREGAS, K. G. B. 245 $aEfeito da cobertura vegetal e manejo cultural na captura de adultos e na incidência de larvas de Spodoptera frugiperda (J. E. Smith, 1797).$h[electronic resource] 260 $aIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 23., 2010, Natal. Anais... Natal: Sociedade Brasileira de Entomologia$c2010 300 $c1 CD-ROM. 650 $aPraga de planta 700 1 $aWAQUIL, J. M. 700 1 $aMENDES, S. M. 700 1 $aCARVALHO, T. M. F. de 700 1 $aFERNANDES, G. W. 700 1 $aSANTOS, F. A.
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