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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: |
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Registro original: |
Embrapa Clima Temperado (CPACT) |
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| 1. |  | ANTUNES, A. C.; MONTANARIN, A.; GRÄBIN, D. M.; MONTEIRO, E. C. dos S. M.; PINHO, F. F. de; ALVARENGA, G. C.; AHUMADA, J.; WALLACE, R. B.; RAMALHO, E. E.; BARNETT, A. P. A.; BAGER, A.; LOPES, A. M. C.; KEUROGHLIAN, A.; GIROUX, A.; HERRERA, A. M.; CORREA, A. P. de A.; MEIGA, A. Y.; JÁCOMO, A. T. de A.; BARBAN, A. de B.; ANTUNES, A.; COELHO, A. G. de A.; CAMILO, A. R.; NUNES, A. V.; GOMES, A. C. dos S. M.; ZANZINI, A. C. da S.; CASTRO, A. B.; DESBIEZ, A. L. J.; FIGUEIREDO, A.; THOISY, B. de; GAUZENS, B.; OLIVEIRA, B. T.; LIMA, C. A. de; PERES, C. A.; DURIGAN, C. C.; BROCARDO, C. R.; ROSA, C. A.; ZÁRATE CASTAÑEDA, C.; MONTEZA MORENO, C. M.; CARNICER, C.; TRINCA, C. T.; POLLI, D. J.; FERRAZ, D. da S.; LANE, D. F.; ROCHA, D. G. da; BARCELOS, D. C.; AUZ, D.; ROSA, D. C. P.; SILVA, D. A.; SILVÉRIO, D. V.; EATON, D. P.; NAKANO OLIVEIRA, E.; VENTICINQUE, E.; JUNIOR, E. C.; MENDONÇA, E. N.; VIEIRA, E. M.; ISASI CATALÁ, E.; FISCHER, E.; CASTRO, E. P.; OLIVEIRA, E. G.; MELO, F. R. de; MUNIZ, F. de L.; ROHE, F.; BACCARO, F. B.; MICHALSKI, F.; PAIM, F. P.; SANTOS, F.; ANAGUANO, F.; PALMEIRA, F. B. L.; REIS, F. da S.; AGUIAR SILVA, F. H.; BATISTA, G. de A. B.; ZAPATA RÍOS, G.; FORERO MEDINA, G.; NETO, G. de S. F.; ALVES, G. B.; AYALA, G.; PEDERSOLI, G. H. P.; EL BIZRI, HANI R.; PRADO, H. A.; MOZERLE, H. B.; COSTA, H. C. M.; LIMA, I. J.; PALACIOS, J.; ASSIS, J. de R.; BOUBLI, J. P.; METZGER, J. P.; TEIXEIRA, J. V.; MIRANDA, J. M. D.; POLISAR, J.; SALVADOR, J.; BORGES ALMEIDA, K.; DIDIER, K.; PEREIRA, K. D. de L.; TORRALVO, K.; GAJAPERSAD, K.; SILVEIRA, L.; MAIOLI, L. U.; MARACAHIPES SANTOS, L.; VALENZUELA, L.; BENAVALLI, L.; FLETCHER, L.; PAOLUCCI, L. N.; ZANZINI, L. P.; DA SILVA, L. Z.; RODRIGUES, L. C. R.; BENCHIMOL, M.; OLIVEIRA, M. A.; LIMA, M.; DA SILVA, M. B.; SANTOS JUNIOR, M. A. dos; VISCARRA, M.; COHN HAFT, M.; ABRAHAMS, M. I.; BENEDETTI, M. A.; MARMONTEL, M.; HIRT, M. R.; TÔRRES, N. M.; CRUZ JUNIOR, O. F.; ALVAREZ LOAYZA, P.; JANSEN, P.; PRIST, P. R.; BRANDO, P. M.; PERÔNICO, P. B.; LEITE, R. do N.; RABELO, R. M.; SOLLMANN, R.; BELTRÃO MENDES, R.; FERREIRA, R. A. F.; COUTINHO, R.; OLIVEIRA, R. da C.; ILHA, R.; HILÁRIO, R. R.; PIRES, R. A. P.; SAMPAIO, R.; MOREIRA, R. da S.; BOTERO ARIAS, R.; MARTINEZ, R. V.; NÓBREGA, R. A. de A.; FADINI, R. F.; MORATO, R. G.; CARNEIRO, R. L.; ALMEIDA, R. P. S.; RAMOS, R. M.; SCHAUB, R.; DORNAS, R.; CUEVA, RUBÉN; ROLIM, S.; LAURINDO, S.; ESPINOSA, S.; FERNANDES, T. N.; SANAIOTTI, T. M.; ALVIM, T. H. G.; DORNAS, TIAGO TEIXEIRA; PIÑA, T. E. N.; ANDRADE, V. L. C.; SANTIAGO, W. T. V.; MAGNUSSON, W. E.; CAMPOS, Z.; RIBEIRO, M. C. Amazonia Camtrap: a data set of mammal, bird, and reptile species recorded with camera traps in the Amazon forest. Ecology, v. 103, n. 9, p. e3738, 2022. Datar Paper.| Biblioteca(s): Embrapa Pantanal. |
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