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Registro Completo |
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
31/10/2019 |
Data da última atualização: |
31/10/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ALBERTON, B.; TORRES, R. da S.; SILVA, T. S. F.; ROCHA, H. R. da; MOURA, M. S. B. de; MORELLATO, L. P. C. |
Afiliação: |
Bruna Alberton, UNESP - Rio Claro, SP; Ricardo da Silva Torres, UNICAMP; Thiago Sanna Freire Silva, University of Stirling, FK9 4LA Stirling, UK; Humberto R. da Rocha, USP - São Paulo, SP; MAGNA SOELMA BESERRA DE MOURA, CPATSA; Leonor Patricia Cerdeira Morellato, UNESP - Rio Claro, SP. |
Título: |
Leafing patterns and drivers across seasonally dry tropical communities. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Remote Sensing, v. 11, 2267, 2019. |
DOI: |
10.3390/rs11192267 |
Idioma: |
Inglês |
Conteúdo: |
Investigating the timing of key phenological events across environments with variable seasonality is crucial to understand the drivers of ecosystem dynamics. Leaf production in the tropics is mainly constrained by water and light availability. Identifying the factors regulating leaf phenology patterns allows eciently forecasting of climate change impacts. We conducted a novel phenological monitoring study across four Neotropical vegetation sites using leaf phenology time series obtained from digital repeated photographs (phenocameras). Seasonality diered among sites, from very seasonally dry climate in the caatinga dry scrubland with an eight-month long dry season to the less restrictive Cerrado vegetation with a six-month dry season. To unravel the main drivers of leaf phenology and understand how they influence seasonal dynamics (represented by the green color channel (Gcc) vegetation index), we applied Generalized Additive Mixed Models (GAMMs) to estimate the growing seasons, using water deficit and day length as covariates. Our results indicated that plant-water relationships are more important in the caatinga, while light (measured as day-length) was more relevant in explaining leafing patterns in Cerrado communities. Leafing behaviors and predictor-response relationships (distinct smooth functions) were more variable at the less seasonal Cerrado sites, suggesting that different life-forms (grasses, herbs, shrubs, and trees) are capable of overcoming drought through specific phenological strategies and associated functional traits, such as deep root systems in trees. MenosInvestigating the timing of key phenological events across environments with variable seasonality is crucial to understand the drivers of ecosystem dynamics. Leaf production in the tropics is mainly constrained by water and light availability. Identifying the factors regulating leaf phenology patterns allows eciently forecasting of climate change impacts. We conducted a novel phenological monitoring study across four Neotropical vegetation sites using leaf phenology time series obtained from digital repeated photographs (phenocameras). Seasonality diered among sites, from very seasonally dry climate in the caatinga dry scrubland with an eight-month long dry season to the less restrictive Cerrado vegetation with a six-month dry season. To unravel the main drivers of leaf phenology and understand how they influence seasonal dynamics (represented by the green color channel (Gcc) vegetation index), we applied Generalized Additive Mixed Models (GAMMs) to estimate the growing seasons, using water deficit and day length as covariates. Our results indicated that plant-water relationships are more important in the caatinga, while light (measured as day-length) was more relevant in explaining leafing patterns in Cerrado communities. Leafing behaviors and predictor-response relationships (distinct smooth functions) were more variable at the less seasonal Cerrado sites, suggesting that different life-forms (grasses, herbs, shrubs, and trees) are capable of overcoming drought through spe... Mostrar Tudo |
Palavras-Chave: |
Fatores climáticos; Fenologia remota perto da superfície; Fenologia vegetativa; Sazonalidade; Séries temporais. |
Thesagro: |
Clima; Mudança Climática; Vegetação. |
Thesaurus Nal: |
Climatic zones. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/204006/1/Leafing-Patterns-and-2019.pdf
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Marc: |
LEADER 02465naa a2200301 a 4500 001 2113701 005 2019-10-31 008 2019 bl uuuu u00u1 u #d 024 7 $a10.3390/rs11192267$2DOI 100 1 $aALBERTON, B. 245 $aLeafing patterns and drivers across seasonally dry tropical communities.$h[electronic resource] 260 $c2019 520 $aInvestigating the timing of key phenological events across environments with variable seasonality is crucial to understand the drivers of ecosystem dynamics. Leaf production in the tropics is mainly constrained by water and light availability. Identifying the factors regulating leaf phenology patterns allows eciently forecasting of climate change impacts. We conducted a novel phenological monitoring study across four Neotropical vegetation sites using leaf phenology time series obtained from digital repeated photographs (phenocameras). Seasonality diered among sites, from very seasonally dry climate in the caatinga dry scrubland with an eight-month long dry season to the less restrictive Cerrado vegetation with a six-month dry season. To unravel the main drivers of leaf phenology and understand how they influence seasonal dynamics (represented by the green color channel (Gcc) vegetation index), we applied Generalized Additive Mixed Models (GAMMs) to estimate the growing seasons, using water deficit and day length as covariates. Our results indicated that plant-water relationships are more important in the caatinga, while light (measured as day-length) was more relevant in explaining leafing patterns in Cerrado communities. Leafing behaviors and predictor-response relationships (distinct smooth functions) were more variable at the less seasonal Cerrado sites, suggesting that different life-forms (grasses, herbs, shrubs, and trees) are capable of overcoming drought through specific phenological strategies and associated functional traits, such as deep root systems in trees. 650 $aClimatic zones 650 $aClima 650 $aMudança Climática 650 $aVegetação 653 $aFatores climáticos 653 $aFenologia remota perto da superfície 653 $aFenologia vegetativa 653 $aSazonalidade 653 $aSéries temporais 700 1 $aTORRES, R. da S. 700 1 $aSILVA, T. S. F. 700 1 $aROCHA, H. R. da 700 1 $aMOURA, M. S. B. de 700 1 $aMORELLATO, L. P. C. 773 $tRemote Sensing$gv. 11, 2267, 2019.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
16/09/1996 |
Data da última atualização: |
13/03/2008 |
Autoria: |
MENOSSO, O. G.; COSTA, J. A.; BOHNEN, H.; ANGHINONI, I. |
Afiliação: |
Embrapa-Soja. Londrina, PR. |
Título: |
Mecanismos de tolerancia ao aluminio em soja: I. modificacao no pH do meio. |
Ano de publicação: |
1995 |
Fonte/Imprenta: |
In: REUNIAO DE PESQUISA DE SOJA DA REGIAO CENTRAL DO BRASIL, 17., 1995, Goiania. Ata e resumos. Goiania: EMGOPA, 1995. |
Páginas: |
p.182. |
Série: |
(EMGOPA. Documentos, 28). |
Idioma: |
Português |
Palavras-Chave: |
Aluminium; Brasil; Soybean; Tolerance; Tolerancia ao aluminio. |
Thesagro: |
Soja. |
Thesaurus NAL: |
Brazil. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00734naa a2200253 a 4500 001 1456209 005 2008-03-13 008 1995 bl uuuu u00u1 u #d 100 1 $aMENOSSO, O. G. 245 $aMecanismos de tolerancia ao aluminio em soja$bI. modificacao no pH do meio. 260 $c1995 300 $ap.182. 490 $a(EMGOPA. Documentos, 28). 650 $aBrazil 650 $aSoja 653 $aAluminium 653 $aBrasil 653 $aSoybean 653 $aTolerance 653 $aTolerancia ao aluminio 700 1 $aCOSTA, J. A. 700 1 $aBOHNEN, H. 700 1 $aANGHINONI, I. 773 $tIn: REUNIAO DE PESQUISA DE SOJA DA REGIAO CENTRAL DO BRASIL, 17., 1995, Goiania. Ata e resumos. Goiania: EMGOPA, 1995.
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