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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
28/12/2021 |
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Data da última atualização: |
30/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RAKOCEVIC, M.; BATISTA, E. R.; PAZIANOTTO, R. A. A.; SCHOLZ, M. B. S.; SOUZA, G. A. R.; CAMPOSTRINI, E.; RAMALHO, J. C. |
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Afiliação: |
MIROSLAVA RAKOCEVIC, UENF; EUNICE REIS BATISTA, CNPMA; RICARDO ANTONIO ALMEIDA PAZIANOTTO, CNPMA; MARIA BRÍGIDA SANTOS SCHOLZ, IAPAR; GUILHERME A R SOUZA, UENF; ELIEMAR CAMPOSTRINI, UENF; JOSÉ C RAMALHO, Universidade Nova de Lisboa. |
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Título: |
Leaf gas exchange and bean quality fluctuations over the whole canopy vertical profile of Arabic coffee cultivated under elevated CO2. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Functional Plant Biology, v. 48, n. 5, p. 469-482, 2021. |
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DOI: |
https://doi.org/10.1071/FP20298 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Leaves in different positions respond differently to dynamic fluctuations in light availability, temperature and to multiple environmental stresses. The current hypothesis states that elevated atmospheric CO2 (e[CO2]) can compensate for the negative effects of water scarcity regarding leaf gas exchanges and coffee bean quality traits over the canopy vertical profile, in interactions with light and temperature microclimate during the two final stages of berry development. Responses of Coffea arabica L. were observed in the 5th year of a free air CO2 enrichment experiment (FACE) under water-limited rainfed conditions. The light dependent leaf photosynthesis curves (A/PAR) were modelled for leaves sampled from vertical profile divided into four 50-cm thick layers. e[CO2] significantly increased gross photosynthesis (AmaxGross), the apparent quantum yield efficiency, light compensation point, light saturation point (LSP) and dark respiration rate (Rd). As a specific stage response, considering berry ripening, all parameters calculated from A/PAR were insensitive to leaf position over the vertical profile. Lack of a progressive increase in AmaxGross and LSP was observed over the whole canopy profile in both stages, especially in the two lowest layers, indicating leaf plasticity to light. Negative correlation of Rd to leaf temperature (TL) was observed under e[CO2] in both stages. Under e[CO2], stomatal conductance was also negatively correlated with TL, reducing leaf transpiration and Rd even with increasing TL. This indicated coffee leaf acclimation to elevated temperatures under e[CO2] and water restriction. The e[CO2] attenuation occurred under water restriction, especially in A and water use efficiency, in both stages, with the exception of the lowest two layers. Under e[CO2], coffee produced berries in moderate- and high light level layers, with homogeneous distribution among them, contrasted to the heterogeneous distribution under actual CO2. e[CO2] led to increased caffeine content in the highest layer, with reduction of chlorogenic acid and lipids under moderate light and to raised levels of sugar in the shaded low layer. The ability of coffee to respond to e[CO2] under limited soil water was expressed through the integrated individual leaf capacities to use the available light and water, resulting in final plant investments in new reproductive structures in moderate and high light level layers. MenosAbstract: Leaves in different positions respond differently to dynamic fluctuations in light availability, temperature and to multiple environmental stresses. The current hypothesis states that elevated atmospheric CO2 (e[CO2]) can compensate for the negative effects of water scarcity regarding leaf gas exchanges and coffee bean quality traits over the canopy vertical profile, in interactions with light and temperature microclimate during the two final stages of berry development. Responses of Coffea arabica L. were observed in the 5th year of a free air CO2 enrichment experiment (FACE) under water-limited rainfed conditions. The light dependent leaf photosynthesis curves (A/PAR) were modelled for leaves sampled from vertical profile divided into four 50-cm thick layers. e[CO2] significantly increased gross photosynthesis (AmaxGross), the apparent quantum yield efficiency, light compensation point, light saturation point (LSP) and dark respiration rate (Rd). As a specific stage response, considering berry ripening, all parameters calculated from A/PAR were insensitive to leaf position over the vertical profile. Lack of a progressive increase in AmaxGross and LSP was observed over the whole canopy profile in both stages, especially in the two lowest layers, indicating leaf plasticity to light. Negative correlation of Rd to leaf temperature (TL) was observed under e[CO2] in both stages. Under e[CO2], stomatal conductance was also negatively correlated with TL, reducing l... Mostrar Tudo |
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Palavras-Chave: |
Berry development; Climate stress; Elevated [CO2]. |
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Thesagro: |
Café; Coffea Arábica; Deficiência Hídrica; Dióxido de Carbono; Fotossíntese. |
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Thesaurus Nal: |
Coffea; Elevated atmospheric gases; Free air carbon dioxide enrichment; Light intensity; Photosynthesis; Stomatal conductance; Water stress; Water use efficiency. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03680naa a2200397 a 4500
001 2138469
005 2021-12-30
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1071/FP20298$2DOI
100 1 $aRAKOCEVIC, M.
245 $aLeaf gas exchange and bean quality fluctuations over the whole canopy vertical profile of Arabic coffee cultivated under elevated CO2.$h[electronic resource]
260 $c2021
520 $aAbstract: Leaves in different positions respond differently to dynamic fluctuations in light availability, temperature and to multiple environmental stresses. The current hypothesis states that elevated atmospheric CO2 (e[CO2]) can compensate for the negative effects of water scarcity regarding leaf gas exchanges and coffee bean quality traits over the canopy vertical profile, in interactions with light and temperature microclimate during the two final stages of berry development. Responses of Coffea arabica L. were observed in the 5th year of a free air CO2 enrichment experiment (FACE) under water-limited rainfed conditions. The light dependent leaf photosynthesis curves (A/PAR) were modelled for leaves sampled from vertical profile divided into four 50-cm thick layers. e[CO2] significantly increased gross photosynthesis (AmaxGross), the apparent quantum yield efficiency, light compensation point, light saturation point (LSP) and dark respiration rate (Rd). As a specific stage response, considering berry ripening, all parameters calculated from A/PAR were insensitive to leaf position over the vertical profile. Lack of a progressive increase in AmaxGross and LSP was observed over the whole canopy profile in both stages, especially in the two lowest layers, indicating leaf plasticity to light. Negative correlation of Rd to leaf temperature (TL) was observed under e[CO2] in both stages. Under e[CO2], stomatal conductance was also negatively correlated with TL, reducing leaf transpiration and Rd even with increasing TL. This indicated coffee leaf acclimation to elevated temperatures under e[CO2] and water restriction. The e[CO2] attenuation occurred under water restriction, especially in A and water use efficiency, in both stages, with the exception of the lowest two layers. Under e[CO2], coffee produced berries in moderate- and high light level layers, with homogeneous distribution among them, contrasted to the heterogeneous distribution under actual CO2. e[CO2] led to increased caffeine content in the highest layer, with reduction of chlorogenic acid and lipids under moderate light and to raised levels of sugar in the shaded low layer. The ability of coffee to respond to e[CO2] under limited soil water was expressed through the integrated individual leaf capacities to use the available light and water, resulting in final plant investments in new reproductive structures in moderate and high light level layers.
650 $aCoffea
650 $aElevated atmospheric gases
650 $aFree air carbon dioxide enrichment
650 $aLight intensity
650 $aPhotosynthesis
650 $aStomatal conductance
650 $aWater stress
650 $aWater use efficiency
650 $aCafé
650 $aCoffea Arábica
650 $aDeficiência Hídrica
650 $aDióxido de Carbono
650 $aFotossíntese
653 $aBerry development
653 $aClimate stress
653 $aElevated [CO2]
700 1 $aBATISTA, E. R.
700 1 $aPAZIANOTTO, R. A. A.
700 1 $aSCHOLZ, M. B. S.
700 1 $aSOUZA, G. A. R.
700 1 $aCAMPOSTRINI, E.
700 1 $aRAMALHO, J. C.
773 $tFunctional Plant Biology$gv. 48, n. 5, p. 469-482, 2021.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Cutter |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
14/01/2005 |
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Data da última atualização: |
14/01/2005 |
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Autoria: |
TOMAS, W. M.; SOUZA, L. L. de; TUBELIS, D. P. |
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Afiliação: |
Embrapa Pantanal (Corumbá, MS); CNPq; UFMS-CPCO (Corumbá, MS); Australian National University. |
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Título: |
Espécies de aves ameaçadas que ocorrem no Pantanal. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: SIMPÓSIO SOBRE RECURSOS NATURAIS E SÓCIO-ECONÔMICOS DO PANTANAL, 4., 2004, Corumbá, MS. Sustentabilidade regional: anais. Corumbá: Embrapa Pantanal: UCDB: UFMS: SEBRAE-MS, 2004. (CD-ROM). |
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Idioma: |
Português |
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Conteúdo: |
O Pantanal é a área úmida com a maior diversidade de espécies de aves no mundo.
Além disso, a região abriga populações vigorosas de espécies ameaçadas de extinção,
como a arara azul. O conhecimento das espécies ameaçadas de extinção a nível
regional, nacional e global pode ajudar na seleção de espécies indicadoras ou espécies bandeira para estudos visando a conservação da biodiversidade. Assim, este trabalho
teve como objetivo compilar as listas estaduais, nacionais e internacionais de espécies
de aves ameaçadas e que ocorrem no Pantanal, detalhando as categorias em que são
classificadas, seus hábitos e habitats, além de uma classificação tentativa de sua
ocorrência no Pantanal. Foram encontradas 117 espécies que ocorrem na planície do
pantaneira, 9 das quais incluídas em listas globais e na lista brasileira de espécies
ameaçadas. Das 177 espécies listadas, 28,2% são de habitats florestais, 6,8% são de
ambientes abertos, 4,3% de cerrado e 14,5 % são aves aquáticas ou paludícolas. As
demais espécies utilizam mais de uma categoria de habitat, sendo que 17,1% ocorrem
tanto em cerrado como em habitats florestais e 18,0% em cerrado e ambientes abertos. |
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Palavras-Chave: |
Ave; Categoria; Categories; Espécies ameaçadas; Hábitos; Habits. |
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Thesaurus NAL: |
birds; endangered species; habitats; Pantanal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02008naa a2200265 a 4500
001 1811578
005 2005-01-14
008 2004 bl uuuu u00u1 u #d
100 1 $aTOMAS, W. M.
245 $aEspécies de aves ameaçadas que ocorrem no Pantanal.
260 $c2004
520 $aO Pantanal é a área úmida com a maior diversidade de espécies de aves no mundo. Além disso, a região abriga populações vigorosas de espécies ameaçadas de extinção, como a arara azul. O conhecimento das espécies ameaçadas de extinção a nível regional, nacional e global pode ajudar na seleção de espécies indicadoras ou espécies bandeira para estudos visando a conservação da biodiversidade. Assim, este trabalho teve como objetivo compilar as listas estaduais, nacionais e internacionais de espécies de aves ameaçadas e que ocorrem no Pantanal, detalhando as categorias em que são classificadas, seus hábitos e habitats, além de uma classificação tentativa de sua ocorrência no Pantanal. Foram encontradas 117 espécies que ocorrem na planície do pantaneira, 9 das quais incluídas em listas globais e na lista brasileira de espécies ameaçadas. Das 177 espécies listadas, 28,2% são de habitats florestais, 6,8% são de ambientes abertos, 4,3% de cerrado e 14,5 % são aves aquáticas ou paludícolas. As demais espécies utilizam mais de uma categoria de habitat, sendo que 17,1% ocorrem tanto em cerrado como em habitats florestais e 18,0% em cerrado e ambientes abertos.
650 $abirds
650 $aendangered species
650 $ahabitats
650 $aPantanal
653 $aAve
653 $aCategoria
653 $aCategories
653 $aEspécies ameaçadas
653 $aHábitos
653 $aHabits
700 1 $aSOUZA, L. L. de
700 1 $aTUBELIS, D. P.
773 $tIn: SIMPÓSIO SOBRE RECURSOS NATURAIS E SÓCIO-ECONÔMICOS DO PANTANAL, 4., 2004, Corumbá, MS. Sustentabilidade regional: anais. Corumbá: Embrapa Pantanal: UCDB: UFMS: SEBRAE-MS, 2004. (CD-ROM).
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Embrapa Pantanal (CPAP) |
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