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 | Acesso ao texto completo restrito à biblioteca da Embrapa Clima Temperado. Para informações adicionais entre em contato com cpact.biblioteca@embrapa.br. |
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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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Registro original: |
Embrapa Clima Temperado (CPACT) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
30/11/1993 |
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Data da última atualização: |
18/08/2020 |
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Autoria: |
CARPANEZZI, A. A.; YARED, J. A. G. |
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Afiliação: |
ANTONIO APARECIDO CARPANEZZI, CPATU; JORGE ALBERTO GAZEL YARED, CPATU. |
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Título: |
Crescimento de freijó (Cordia goeldiana Huber) em plantios experimentais. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
Belém, PA: EMBRAPA-CPATU, 1981. |
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Páginas: |
10 p. |
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Série: |
(EMBRAPA-CPATU. Boletim de pesquisa, 26). |
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Idioma: |
Português |
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Palavras-Chave: |
Belterra; Brasil; Brazilian walnut; Cordia goeldiana Hubber; Efeito; Effect; Floresta Nacional do Tapajos; freijó; Growth; Line; Linha; Luz; Pará; plantação experimental; Plantation; Recru; Santarem. |
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Thesagro: |
Cordia Goeldiana; Crescimento; Plantio; Química; Solo. |
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Thesaurus NAL: |
Amazonia; chemistry; light; soil. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/30794/1/CPATU-BP26.pdf
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Marc: |
LEADER 01091nam a2200445 a 4500
001 1379784
005 2020-08-18
008 1981 bl uuuu u0uu1 u #d
100 1 $aCARPANEZZI, A. A.
245 $aCrescimento de freijó (Cordia goeldiana Huber) em plantios experimentais.
260 $aBelém, PA: EMBRAPA-CPATU$c1981
300 $a10 p.
490 $a(EMBRAPA-CPATU. Boletim de pesquisa, 26).
650 $aAmazonia
650 $achemistry
650 $alight
650 $asoil
650 $aCordia Goeldiana
650 $aCrescimento
650 $aPlantio
650 $aQuímica
650 $aSolo
653 $aBelterra
653 $aBrasil
653 $aBrazilian walnut
653 $aCordia goeldiana Hubber
653 $aEfeito
653 $aEffect
653 $aFloresta Nacional do Tapajos
653 $afreijó
653 $aGrowth
653 $aLine
653 $aLinha
653 $aLuz
653 $aPará
653 $aplantação experimental
653 $aPlantation
653 $aRecru
653 $aSantarem
700 1 $aYARED, J. A. G.
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Embrapa Amazônia Oriental (CPATU) |
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