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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
18/09/2020 |
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Data da última atualização: |
18/09/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
STARK, S. C.; BRESHEARS, D. D.; ARAGÓN, S.; VILLEGAS, J. C.; LAW, D. J.; SMITH, M. N.; MINOR, D. M.; ASSIS, R. L. de; ALMEIDA, D. R. A. de; OLIVEIRA, G. de; SALESKA, S. R.; SWANN, A. S.; MOURA, J. M. S.; CAMARGO, J. L.; SILVA, R. da; ARAGÃO, L. E. O. C.; OLIVEIRA JUNIOR, R. C. de. |
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Afiliação: |
SCOTT C. STARK, Michigan State University; DAVID D. BRESHEARS, University of Arizona; SUSAN ARAGÓN, INPA / UFOPA / PUCP; JUAN CAMILO VILLEGAS, University of Arizona / Universidad de Antioquia; DARIN J. LAW, University of Arizona; MARIELLE N. SMITH, Michigan State University; DAVID M. MINOR, Michigan State University / University of Maryland at College Park; RAFAEL LEANDRO DE ASSIS, INPA / University of Oslo; DANILO ROBERTI ALVES DE ALMEIDA, USP/ESALQ; GABRIEL DE OLIVEIRA, University of Toronto / INPE; SCOTT R. SALESKA, University of Arizona; ABIGAILL. S. SWANN, University of Washington; JOSÉ MAURO S. MOURA, UFOPA; JOSÉ LUIS CAMARGO, INPA; RODRIGO DA SILVA, Laboratório de Física e Química da Atmosfera; LUIZ E. O. C. ARAGÃO, INPE / University of Exeter; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU. |
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Título: |
Reframing tropical savannization: linking changes in canopy structure to energy balance alterations that impact climate. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Ecosphere, v. 11, n. 9, e03231, 2020. |
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DOI: |
https://doi.org/10.1002/ecs2.3231 |
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Idioma: |
Inglês |
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Conteúdo: |
Tropical ecosystems are undergoing unprecedented rates of degradation from deforestation, fire, and drought disturbances. The collective effects of these disturbances threaten to shift large portions of tropical ecosystems such as Amazon forests into savanna like structure via tree loss, functional changes, and the emergence of fire (savannization). Changes from forest states to a more open savanna like structure can affect local microclimates, surface energy fluxes, and biosphere?atmosphere interactions. A predominant type of ecosystem state change is the loss of tree cover and structural complexity in disturbed forest. Although important advances have been made contrasting energy fluxes between historically distinct old growth forest and savanna systems, the emergence of secondary forests and savanna like ecosystems necessitates a reframing to consider gradients of tree structure that span forest to savanna like states at multiple scales. In this Innovative Viewpoint, we draw from the literature on forest?grassland continua to develop a framework to assess the consequences of tropical forest degradation on surface energy fluxes and canopy structure. We illustrate this framework for forest sites with contrasting canopy structure that ranges from simple, open, and savanna like to complex and closed, representative of tropical wet forest, within two climatically distinct regions in the Amazon. Using a recently developed rapid field assessment approach, we quantify differences in cover, leaf area vertical profiles, surface roughness, albedo, and energy balance partitioning between adjacent sites and compare canopy structure with adjacent old growth forest; more structurally simple forests displayed lower net radiation. To address forest?atmosphere feedback, we also consider the effects of canopy structure change on susceptibility to additional future disturbance. We illustrate a converse transition?recovery in structure following disturbance?measuring forest canopy structure 10 yr after the imposition of a drought in the ground breaking Seca Floresta experiment. Our approach strategically enables rapid characterization of surface properties relevant to vegetation models following degradation, and advances links between surface properties and canopy structure variables, increasingly available from remote sensing. Concluding, we hypothesize that understanding surface energy balance and microclimate change across degraded tropical forest states not only reveals critical atmospheric forcing, but also critical local scale feedbacks from forest sensitivity to additional climate linked disturbance. MenosTropical ecosystems are undergoing unprecedented rates of degradation from deforestation, fire, and drought disturbances. The collective effects of these disturbances threaten to shift large portions of tropical ecosystems such as Amazon forests into savanna like structure via tree loss, functional changes, and the emergence of fire (savannization). Changes from forest states to a more open savanna like structure can affect local microclimates, surface energy fluxes, and biosphere?atmosphere interactions. A predominant type of ecosystem state change is the loss of tree cover and structural complexity in disturbed forest. Although important advances have been made contrasting energy fluxes between historically distinct old growth forest and savanna systems, the emergence of secondary forests and savanna like ecosystems necessitates a reframing to consider gradients of tree structure that span forest to savanna like states at multiple scales. In this Innovative Viewpoint, we draw from the literature on forest?grassland continua to develop a framework to assess the consequences of tropical forest degradation on surface energy fluxes and canopy structure. We illustrate this framework for forest sites with contrasting canopy structure that ranges from simple, open, and savanna like to complex and closed, representative of tropical wet forest, within two climatically distinct regions in the Amazon. Using a recently developed rapid field assessment approach, we quantify differences... Mostrar Tudo |
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Palavras-Chave: |
Balanço energético; Savanização; Transição florestal. |
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Thesagro: |
Mudança Climática; Vegetação. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/216113/1/ecs2.3231.pdf
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Marc: |
LEADER 03773naa a2200385 a 4500
001 2125025
005 2020-09-18
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1002/ecs2.3231$2DOI
100 1 $aSTARK, S. C.
245 $aReframing tropical savannization$blinking changes in canopy structure to energy balance alterations that impact climate.$h[electronic resource]
260 $c2020
520 $aTropical ecosystems are undergoing unprecedented rates of degradation from deforestation, fire, and drought disturbances. The collective effects of these disturbances threaten to shift large portions of tropical ecosystems such as Amazon forests into savanna like structure via tree loss, functional changes, and the emergence of fire (savannization). Changes from forest states to a more open savanna like structure can affect local microclimates, surface energy fluxes, and biosphere?atmosphere interactions. A predominant type of ecosystem state change is the loss of tree cover and structural complexity in disturbed forest. Although important advances have been made contrasting energy fluxes between historically distinct old growth forest and savanna systems, the emergence of secondary forests and savanna like ecosystems necessitates a reframing to consider gradients of tree structure that span forest to savanna like states at multiple scales. In this Innovative Viewpoint, we draw from the literature on forest?grassland continua to develop a framework to assess the consequences of tropical forest degradation on surface energy fluxes and canopy structure. We illustrate this framework for forest sites with contrasting canopy structure that ranges from simple, open, and savanna like to complex and closed, representative of tropical wet forest, within two climatically distinct regions in the Amazon. Using a recently developed rapid field assessment approach, we quantify differences in cover, leaf area vertical profiles, surface roughness, albedo, and energy balance partitioning between adjacent sites and compare canopy structure with adjacent old growth forest; more structurally simple forests displayed lower net radiation. To address forest?atmosphere feedback, we also consider the effects of canopy structure change on susceptibility to additional future disturbance. We illustrate a converse transition?recovery in structure following disturbance?measuring forest canopy structure 10 yr after the imposition of a drought in the ground breaking Seca Floresta experiment. Our approach strategically enables rapid characterization of surface properties relevant to vegetation models following degradation, and advances links between surface properties and canopy structure variables, increasingly available from remote sensing. Concluding, we hypothesize that understanding surface energy balance and microclimate change across degraded tropical forest states not only reveals critical atmospheric forcing, but also critical local scale feedbacks from forest sensitivity to additional climate linked disturbance.
650 $aMudança Climática
650 $aVegetação
653 $aBalanço energético
653 $aSavanização
653 $aTransição florestal
700 1 $aBRESHEARS, D. D.
700 1 $aARAGÓN, S.
700 1 $aVILLEGAS, J. C.
700 1 $aLAW, D. J.
700 1 $aSMITH, M. N.
700 1 $aMINOR, D. M.
700 1 $aASSIS, R. L. de
700 1 $aALMEIDA, D. R. A. de
700 1 $aOLIVEIRA, G. de
700 1 $aSALESKA, S. R.
700 1 $aSWANN, A. S.
700 1 $aMOURA, J. M. S.
700 1 $aCAMARGO, J. L.
700 1 $aSILVA, R. da
700 1 $aARAGÃO, L. E. O. C.
700 1 $aOLIVEIRA JUNIOR, R. C. de
773 $tEcosphere$gv. 11, n. 9, e03231, 2020.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
28/09/2012 |
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Data da última atualização: |
15/01/2013 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
FERREIRA, P. R. S.; FORNAROLLI, D. A.; ANGHNONI, T.; OLIVEIRA, D. C.; GAZZIERO, D. L. P. |
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Afiliação: |
Faculdade Integrado de Campo Mourão; Faculdade Integrado de Campo Mourão; Faculdade Integrado de Campo Mourão; Faculdade Integrado de Campo Mourão; DIONISIO LUIZ PISA GAZZIERO, CNPSO. |
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Título: |
Comparativo entre controle químico, mecânico e integrado o manejo de Conyza bonariensis resistente ao glifosato. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DA CIÊNCIA DAS PLANTAS DANINHAS, 28., 2012, Campo Grande. A ciência das plantas daninhas na era da biotecnologia: anais. Campo Grande: SBCPD, 2012. 5 p. Trab. 799. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Notas: |
CBCPD. |
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Conteúdo: |
Avaliou-se a influência do controle químico e mecânico de diferentes intervalos entre aplicações de herbicidas à base de glifosato, 2,4-D isolados e combinados e roçadas, estas após aplicações dos mesmos herbicidas e também aplicações de herbicidas à base de paraquat, em sequencial aos herbicidas citados, além do uso de outros ativos tais como o diclosulam e chlorimuron, no município de Juranda/PR, 2010. As avaliações visuais foram realizadas aos 10, 20 e 30 DAA (Dias Após Aplicação), através da porcentagem de controle de 0 (nenhum controle) a 100% (morte completa). Os resultados aos 30DAA mostraram que o glifosato associado ao 2,4-D e posterior sequencial com paraquat, promoveu controle em torno de 80% (mínimo aceitável), glifosato+2,4-D+diclosulam ou chlorimuron e sequencial com paraquat o controle foi em 90%. Glifosato+diclosulam ou chlorimuron e mesmo com a sequencial os resultados foram abaixo de 80%. Quando ocorreu somente a roçada o controle foi55%. Roçada e glifosato imediato, 1DAR (Dias Após Roçada) 5DAR, controle de 80%. Roçada e 2,4-D imediato, 1DAR e 5DAR, controle de 85%, 78e 63% respectivamente. Roçada e glifosato+2,4-D imediato, 1DAR e 5DAR, controle de 90%, 95% e 59%, respectivamente. Glifosato+2,4-D, roçada imediata, 1DAA, 5DAA e 10DAA, controles de 65, 75, 87 e 90%, respectivamente. |
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Thesagro: |
Controle integrado; Controle mecânico; Controle químico; Erva daninha; Herbicida. |
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Thesaurus NAL: |
Herbicides; Integrated weed management; Weeds. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/67062/1/799-XXVIIICBCPD.pdf
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Marc: |
LEADER 02300nam a2200277 a 4500
001 1934950
005 2013-01-15
008 2012 bl uuuu u00u1 u #d
100 1 $aFERREIRA, P. R. S.
245 $aComparativo entre controle químico, mecânico e integrado o manejo de Conyza bonariensis resistente ao glifosato.
260 $aIn: CONGRESSO BRASILEIRO DA CIÊNCIA DAS PLANTAS DANINHAS, 28., 2012, Campo Grande. A ciência das plantas daninhas na era da biotecnologia: anais. Campo Grande: SBCPD, 2012. 5 p. Trab. 799.$c2012
300 $c1 CD-ROM.
500 $aCBCPD.
520 $aAvaliou-se a influência do controle químico e mecânico de diferentes intervalos entre aplicações de herbicidas à base de glifosato, 2,4-D isolados e combinados e roçadas, estas após aplicações dos mesmos herbicidas e também aplicações de herbicidas à base de paraquat, em sequencial aos herbicidas citados, além do uso de outros ativos tais como o diclosulam e chlorimuron, no município de Juranda/PR, 2010. As avaliações visuais foram realizadas aos 10, 20 e 30 DAA (Dias Após Aplicação), através da porcentagem de controle de 0 (nenhum controle) a 100% (morte completa). Os resultados aos 30DAA mostraram que o glifosato associado ao 2,4-D e posterior sequencial com paraquat, promoveu controle em torno de 80% (mínimo aceitável), glifosato+2,4-D+diclosulam ou chlorimuron e sequencial com paraquat o controle foi em 90%. Glifosato+diclosulam ou chlorimuron e mesmo com a sequencial os resultados foram abaixo de 80%. Quando ocorreu somente a roçada o controle foi55%. Roçada e glifosato imediato, 1DAR (Dias Após Roçada) 5DAR, controle de 80%. Roçada e 2,4-D imediato, 1DAR e 5DAR, controle de 85%, 78e 63% respectivamente. Roçada e glifosato+2,4-D imediato, 1DAR e 5DAR, controle de 90%, 95% e 59%, respectivamente. Glifosato+2,4-D, roçada imediata, 1DAA, 5DAA e 10DAA, controles de 65, 75, 87 e 90%, respectivamente.
650 $aHerbicides
650 $aIntegrated weed management
650 $aWeeds
650 $aControle integrado
650 $aControle mecânico
650 $aControle químico
650 $aErva daninha
650 $aHerbicida
700 1 $aFORNAROLLI, D. A.
700 1 $aANGHNONI, T.
700 1 $aOLIVEIRA, D. C.
700 1 $aGAZZIERO, D. L. P.
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