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Registro Completo |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
15/01/2015 |
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Data da última atualização: |
15/01/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BLANCO, C. C.; SCHEITER, S.; SOSINSKI, E.; FIDELIS, A.; ANAND, M.; PILLAR, V. P. |
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Afiliação: |
CAROLINA CASAGRANDE BLANCO, UFRGS; SIMON SCHEITER, Biodiversität und Klima Forschungszentrum; ENIO EGON SOSINSKI JUNIOR, CPACT; ALESSANDRA FIDELIS, UNESP; MADHUR ANAND, University of Guelph; VALÉRIO D. PILLAR, UFRGS. |
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Título: |
Feedbacks between vegetation and disturbance processes promotelong-term persistence of forest-grassland mosaics in south Brazil. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Ecological Modelling, v. 291, p. 224-232, Nov. 2014. |
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ISSN: |
0304-3800 |
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Idioma: |
Inglês |
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Conteúdo: |
Vegetation changes, such as shrub encroachment and forest expansion over grasslands, prairies andsavannas have been related to changes in climatic (mainly rainfall and temperature) and atmosphericconditions (CO2concentration). However, a longstanding question in ecology is how mosaics of forestsand open-canopy ecosystems could persist over millennia in sites where climatic conditions favor forests.Here we tested the influence of interactions between grass-tree competition, environmental hetero-geneity (topography), seed dispersal, initial density and spatial aggregation of vegetation patches anddisturbance behavior (fire) on the long-term coexistence of forests and grasslands in South Brazil. Forthis, we incorporated the adaptive dynamic global vegetation model (aDGVM) into a spatially explicitmodeling approach (2D-aDGVM). Our results showed that recurrent disturbance related to grasses such asfires plays a key role in maintaining the long-term coexistence of forests and grasslands, mainly throughfeedbacks between disturbance frequency and grass biomass. Topographic heterogeneity affected therate of forest expansion by adding spatio-temporal variability in vegetation-fire feedbacks. However, thespatial pattern and connectivity of fire-prone (grasslands) and fire-sensitive (forest) vegetation patcheswere more important to maintain the long-term coexistence of both alternative vegetation states thanthe initial proportion of forest and grasslands patches. The model is the first individual-based DGVM toconsider the combined effects of topography, seed dispersal and fire spread behavior in a spatially explicitapproach. MenosVegetation changes, such as shrub encroachment and forest expansion over grasslands, prairies andsavannas have been related to changes in climatic (mainly rainfall and temperature) and atmosphericconditions (CO2concentration). However, a longstanding question in ecology is how mosaics of forestsand open-canopy ecosystems could persist over millennia in sites where climatic conditions favor forests.Here we tested the influence of interactions between grass-tree competition, environmental hetero-geneity (topography), seed dispersal, initial density and spatial aggregation of vegetation patches anddisturbance behavior (fire) on the long-term coexistence of forests and grasslands in South Brazil. Forthis, we incorporated the adaptive dynamic global vegetation model (aDGVM) into a spatially explicitmodeling approach (2D-aDGVM). Our results showed that recurrent disturbance related to grasses such asfires plays a key role in maintaining the long-term coexistence of forests and grasslands, mainly throughfeedbacks between disturbance frequency and grass biomass. Topographic heterogeneity affected therate of forest expansion by adding spatio-temporal variability in vegetation-fire feedbacks. However, thespatial pattern and connectivity of fire-prone (grasslands) and fire-sensitive (forest) vegetation patcheswere more important to maintain the long-term coexistence of both alternative vegetation states thanthe initial proportion of forest and grasslands patches. The model is the first... Mostrar Tudo |
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Palavras-Chave: |
Pastagem subtropical; Subtropical grasslands. |
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Thesagro: |
Dispersão de semente; Pastagem; Simulação. |
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Thesaurus Nal: |
seed dispersal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02434naa a2200265 a 4500
001 2005714
005 2015-01-15
008 2014 bl uuuu u00u1 u #d
022 $a0304-3800
100 1 $aBLANCO, C. C.
245 $aFeedbacks between vegetation and disturbance processes promotelong-term persistence of forest-grassland mosaics in south Brazil.$h[electronic resource]
260 $c2014
520 $aVegetation changes, such as shrub encroachment and forest expansion over grasslands, prairies andsavannas have been related to changes in climatic (mainly rainfall and temperature) and atmosphericconditions (CO2concentration). However, a longstanding question in ecology is how mosaics of forestsand open-canopy ecosystems could persist over millennia in sites where climatic conditions favor forests.Here we tested the influence of interactions between grass-tree competition, environmental hetero-geneity (topography), seed dispersal, initial density and spatial aggregation of vegetation patches anddisturbance behavior (fire) on the long-term coexistence of forests and grasslands in South Brazil. Forthis, we incorporated the adaptive dynamic global vegetation model (aDGVM) into a spatially explicitmodeling approach (2D-aDGVM). Our results showed that recurrent disturbance related to grasses such asfires plays a key role in maintaining the long-term coexistence of forests and grasslands, mainly throughfeedbacks between disturbance frequency and grass biomass. Topographic heterogeneity affected therate of forest expansion by adding spatio-temporal variability in vegetation-fire feedbacks. However, thespatial pattern and connectivity of fire-prone (grasslands) and fire-sensitive (forest) vegetation patcheswere more important to maintain the long-term coexistence of both alternative vegetation states thanthe initial proportion of forest and grasslands patches. The model is the first individual-based DGVM toconsider the combined effects of topography, seed dispersal and fire spread behavior in a spatially explicitapproach.
650 $aseed dispersal
650 $aDispersão de semente
650 $aPastagem
650 $aSimulação
653 $aPastagem subtropical
653 $aSubtropical grasslands
700 1 $aSCHEITER, S.
700 1 $aSOSINSKI, E.
700 1 $aFIDELIS, A.
700 1 $aANAND, M.
700 1 $aPILLAR, V. P.
773 $tEcological Modelling$gv. 291, p. 224-232, Nov. 2014.
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Embrapa Clima Temperado (CPACT) |
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| 3. |  | FREITAS, R. G. de; VASCONCELOS, E. S. de; CRUZ, C. D.; ROSADO, A. M.; ROCHA, R. B.; TAKAMI, L. K. Predição de ganhos genéticos em progênies de polinização aberta de Eucalyptus urograndis cultivadas em diferentes ambientes e submetidas a diferentes procedimentos de seleção. Revista Árvore, Viçosa, MG, v. 33, n. 2, mar./abr. 2009. doi: 10.1590/S0100-67622009000200007| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Rondônia. |
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| 4. | | FREITAS, R. G. de; MATOS, F. S.; SILVA, D. F. da; MISSIO, R. F.; RESENDE, M. D. V. de; DIAS, L. A. dos S. Diversidade genética em acessos de Jatropha curcas L. através de variáveis canônicas. In: CONGRESSO DA REDE BRASILEIRA DE TECNOLOGIA DE BIODIESEL, 4.; CONGRESSO BRASILEIRO DE PLANTAS OLEAGINOSAS, ÓLEOS, GORDURAS E BIODIESEL, 7., 2010, Belo Horizonte. Biodiesel: inovação tecnológica e qualidade: anais: trabalhos científicos. Lavras: UFLA, 2010.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 5. | | CARDOSO, P. M. R.; DIAS, L. A. dos S.; RESENDE, M. D. V. de; FREITAS, R. G. de; CORRÊA, T. R.; MUNIZ, D. R.; ZAIDAN, I. R. Genetic evaluation and selection in Jatropha curcas L. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 18, n. 2, p. 192-199, Apr./June 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Florestas. |
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| 6. | | GONDIM, T. C. de O.; DIAS, L. A. dos S.; DIAS, D. C. F. dos S.; LAVIOLA, B. G.; FREITAS, R. G. de; SILVA, L. J. da; MARTINS, A. O. Características agronômicas e produção inicial do pinhão manso proveniente de plantas oriundas de estacas de diferentes tamanhos ou de sementes. In: CONGRESSO DA REDE BRASILEIRA DE TECNOLOGIA DE BIODIESEL, 4.; CONGRESSO BRASILEIRO DE PLANTAS OLEAGINOSAS, ÓLEOS, GORDURAS E BIODIESEL, 7., 2010, Belo Horizonte. Biodiesel: inovação tecnológica e qualidade: anais. Lavras: UFLA, 2010. v. 2. p. 733-734. il.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroenergia. |
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| 7. | | GONDIM, T. C. de O.; DIAS, L. A. dos S.; DIAS, D. C. F. dos S.; LAVIOLA, B. G.; OLIVEIRA, G. L.; FREITAS, R. G. de; RIBEIRO, R. da M.; MARTINS, A. O. Desenvolvimento de mudas de pinhão manso propagadas por sementes e por estacas de tamanho reduzido. In: CONGRESSO BRASILEIRO DE PLANTAS OLEAGINOSAS, ÓLEOS, GORDURAS E BIODIESEL, 6., 2009, Montes Claros, MG. Biodiesel: inovação tecnológica – anais. Lavras: UFLA, 2009.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Agroenergia. |
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| 8. | | HERMENEGILDO, P. da S.; FREITAS, R. G. de; CASCARDO, R. de S; GUIMARÃES, L. M. S.; BADEL, J. L.; ALFENAS‑ZERBINI, P.; MARQUES, A. S. dos A.; ALFENAS, A. C.; FERREIRA, M. A. S. V. Sensitive detection, quantification, and monitoring of Erwinia psidii colonization of guava plants using intercalating dye-based real-time PCR. Tropical Plant Pathology, v. 48, p. 375-383, 2022. Na publicação: Abi S. A. Marques.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 8 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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