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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 promote long-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 02435naa 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 $aFeedbacks between vegetation and disturbance processes promote long-term persistence of forest-grassland mosaics in south Brazil.$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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| 2. |  | SUKUMAR, S.; CAMPBELL, B.; JENKINS, J.; PARK, W.; PERCY, R.; FRELICHOWSKI, J.; MAYEE, C.; GOTMARE, V.; DESSAUW, D.; GIBAND, M.; DU, Y.; JIA, Y.; CONSTABLE, G.; DILLON, S.; ABDURAKHMONOV, A.; ABDUKARIMOV, A.; RIZAEVA, S.; ADULLAEV, A.; BARROSO, P. A. V.; PADUA, J.; HOFFMANN, L. V. A Global view of cotton germplasm resources. In: NATIONAL COTTON COUNCIL BELTWIDE COTTON CONFERENCE, 2009, San Antonio, Texas. p. 658| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| 3. | | CAMPBELL, B. T.; SAHA, S.; PERCY, R.; FRELICHOWSKI, J.; JENKINS, J. N.; PARK, W.; MAYEE, C. D.; GOTMARE, V.; DESSAUW, D.; GIBAND, M.; DU, X.; JIA, Y.; CONSTABLE, G.; DILLON, S.; ABDURAKHMONOV, I. Y.; ABDUKARIMOV, A.; RIZAEVA, S. M.; ADULLAEV, A.; BARROSO, P. A. V.; PADUA, J. G.; HOFFMANN, L. V.; PODOLNAYA, L. Status of the global cotton germplasm resources. Crop science, v. 50, p. 1161-1179, jul./aug., 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Algodão; Embrapa Recursos Genéticos e Biotecnologia. |
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| 4. | | YOUNG, N. D.; JEX, A. R.; LI, B.; LIU, S.; YANG, L.; XIONG, Z.; LI, Y.; CANTACESSI, C.; HALL, R. S.; XU, X.; CHEN, F.; WU, X.; ZERLOTINI, A.; OLIVEIRA, G.; HOFMANN, A.; ZHANG, G.; FANG, X.; KANG, Y.; CAMPBELL, B. E.; LOUKAS, A.; RANGANATHAN, S.; ROLLINSON, D.; RINALDI, G.; BRINDLEY, P. J.; YANG, H.; WANG, J.; WANG, J.; GASSER, R. B. Whole-genome sequence of Schistosoma haematobium. Nature Genetics, v. 44, n. 2, p. 221-225, Feb. 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Agricultura Digital. |
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| 5. | | HERRERO, M.; THORNTON, P. K.; MASON-D'CROZ, D.; PALMER, J.; BENTON, T. G.; BODIRSKY, B. L.; BOGARD, J. R.; HALL, A.; LEE, B.; NYBORG, K.; PRADHAN, P.; BONNETT, G. D.; BRYAN, B. A.; CAMPBELL, B. M.; CHRISTENSEN, S.; CLARK, M.; COOK, M. T.; BOER, I. J. M. de; DOWNS, C.; DIZYEE, K.; FOLBERTH, C.; GODDE, C. M.; GERBER, J. S.; GRUNDY, M.; HAVLIK, P.; JARVIS, A.; KING, R.; LOBOGUERRERO, A. M.; LOPES, M. A.; MCLNTYRE, C. L.; NAYLOR, R.; NAVARRO, J.; OBERSTEINER, M.; PARODI, A.; PEOPLES, M. B.; PIKAAR, I.; POPP, A.; ROCKSTROM, J.; ROBERTSON, M. J.; SMITH, P.; STEHFEST, E.; SWAIN, S. M.; VALIN, H.; VAN WIJK, M.; VAN ZANTEN, H. H. E.; VERMEULEN, S.; VERVOORT, J.; WEST, P. C. Innovation can accelerate the transition towards a sustainable food system. Nature Food, v. 1, p. 266-272, May 2020. Perspective.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 5 |
| Biblioteca(s): Embrapa Agroenergia. |
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