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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
31/05/1996 |
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Data da última atualização: |
31/05/1996 |
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Autoria: |
UHL, C.; CLARK, K.; CLARK, H.; MURPHY, P. |
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Título: |
Early plant succession after cutting and burning in the upper Rio Negro region of the Amazon Basin. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
Journal of Ecology, v.69, n.2, p.631-649, 1981. |
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Idioma: |
Inglês |
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Conteúdo: |
(1) Changes in vegetation structure, species composition, and species dominance were studied over the first twenty-two months of succession after the cutting and burning of several mature tierra firme (i.e. non-flooded) forest sites in south Venezuela in the upper Rio Negro region of the Amazon Basin. To explain the observed succession, additional field investigations were undertaken.
(2) Four months after burning the density of plants was less than 1 m-2. The density of successional woody plants, forbs, and grasses increased rapidly from the fourth to the tenth month of succession. There was little change in plant density between the tenth and twenty-second month, but a large change in vegetation height occurred during this time. By the twenthy-second month a loose canopy of Cecropia spp. was present at 5 m height.
(3) many of the forest tree species sprouted from the stump when cut, but burning killed sprouts and significantly reduced the size of the seed bank. Nevertheles, the first successional woody colinizers establioshed from seed which survived the burn. The first forb and grass colonizers established from seeds dispoersed onto the site after the burn.
(4) The common successional woody species had bat- or bird-dispersed seeds. Many forbs and grasses had wind-dispersed seeds.
(5) Poapulation densities were low during the first months of succession because of the low density of propagules and because the low rainfall during this time was not favourable for seedling germination or establishment. The rapid increase in plant density after about the fourth month occurred because the early colonizers had then begun to produce, and disperse loacally, large numbers of seeds.
(6) There were six distinct microhabitat types present on the sites after burning. Most species tested showed distinct microhabitat preferences. Menos(1) Changes in vegetation structure, species composition, and species dominance were studied over the first twenty-two months of succession after the cutting and burning of several mature tierra firme (i.e. non-flooded) forest sites in south Venezuela in the upper Rio Negro region of the Amazon Basin. To explain the observed succession, additional field investigations were undertaken.
(2) Four months after burning the density of plants was less than 1 m-2. The density of successional woody plants, forbs, and grasses increased rapidly from the fourth to the tenth month of succession. There was little change in plant density between the tenth and twenty-second month, but a large change in vegetation height occurred during this time. By the twenthy-second month a loose canopy of Cecropia spp. was present at 5 m height.
(3) many of the forest tree species sprouted from the stump when cut, but burning killed sprouts and significantly reduced the size of the seed bank. Nevertheles, the first successional woody colinizers establioshed from seed which survived the burn. The first forb and grass colonizers established from seeds dispoersed onto the site after the burn.
(4) The common successional woody species had bat- or bird-dispersed seeds. Many forbs and grasses had wind-dispersed seeds.
(5) Poapulation densities were low during the first months of succession because of the low density of propagules and because the low rainfall during this time was not favourable for seedling ge... Mostrar Tudo |
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Palavras-Chave: |
Bacia Amazonica; Plant; Queima; Regiao do Rio Negro; Region of the Amazon Basin; Succession; Sucesao. |
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Thesagro: |
Corte; Planta. |
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Thesaurus Nal: |
burning; cutting. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02591naa a2200289 a 4500
001 1788950
005 1996-05-31
008 1981 bl --- 0-- u #d
100 1 $aUHL, C.
245 $aEarly plant succession after cutting and burning in the upper Rio Negro region of the Amazon Basin.
260 $c1981
520 $a(1) Changes in vegetation structure, species composition, and species dominance were studied over the first twenty-two months of succession after the cutting and burning of several mature tierra firme (i.e. non-flooded) forest sites in south Venezuela in the upper Rio Negro region of the Amazon Basin. To explain the observed succession, additional field investigations were undertaken. (2) Four months after burning the density of plants was less than 1 m-2. The density of successional woody plants, forbs, and grasses increased rapidly from the fourth to the tenth month of succession. There was little change in plant density between the tenth and twenty-second month, but a large change in vegetation height occurred during this time. By the twenthy-second month a loose canopy of Cecropia spp. was present at 5 m height. (3) many of the forest tree species sprouted from the stump when cut, but burning killed sprouts and significantly reduced the size of the seed bank. Nevertheles, the first successional woody colinizers establioshed from seed which survived the burn. The first forb and grass colonizers established from seeds dispoersed onto the site after the burn. (4) The common successional woody species had bat- or bird-dispersed seeds. Many forbs and grasses had wind-dispersed seeds. (5) Poapulation densities were low during the first months of succession because of the low density of propagules and because the low rainfall during this time was not favourable for seedling germination or establishment. The rapid increase in plant density after about the fourth month occurred because the early colonizers had then begun to produce, and disperse loacally, large numbers of seeds. (6) There were six distinct microhabitat types present on the sites after burning. Most species tested showed distinct microhabitat preferences.
650 $aburning
650 $acutting
650 $aCorte
650 $aPlanta
653 $aBacia Amazonica
653 $aPlant
653 $aQueima
653 $aRegiao do Rio Negro
653 $aRegion of the Amazon Basin
653 $aSuccession
653 $aSucesao
700 1 $aCLARK, K.
700 1 $aCLARK, H.
700 1 $aMURPHY, P.
773 $tJournal of Ecology$gv.69, n.2, p.631-649, 1981.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| Registros recuperados : 360 | |
| 2. |  | GONCALVES, A. O. Caracterização climática. In: PRADO, R. B.; FIDALGO, E. C. C.; BONNET, A. (Ed.). Monitoramento da revegetação do COMPERJ: etapa inicial. Brasília, DF: Embrapa, 2014. cap. 4, p. 65-82.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Solos. |
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| 13. | | MARCHIORO, E.; FERNANDES, N. F.; MACEDO, J. R. de; BHERING, S. B.; GONCALVES, A. O. Aplicação do código florestal brasileiro como subsídio para o planejamento ambiental: um estudo de caso na região noroeste do estado do Rio de Janeiro. Sociedade & Natureza, Uberlândia, v. 22, n. 1, p. 11-21, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Solos. |
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| 14. | | SCIENCIA, M. C. M; GONCALVES, A. O.; FIGUEIREDO, R. de O.; MARIN, F. R. Análise comparativa entre dados de precipitação observados (superfície) e estimados pelo satélite TRMM em Itaí-SP. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 20.; SIMPÓSIO DE MUDANÇAS CLIMÁTICAS E DESERTIFICAÇÃO DO SEMIÁRIDO BRASILEIRO, 5., 2017, Petrolina, Juazeiro. A agrometeorologia na solução de problemas multiescala: anais. Petrolina: Embrapa Semiárido: Sociedade Brasileira de Agrometeorologia; Juazeiro: UNIVASF, 2017.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente; Embrapa Solos. |
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| 17. | | SHINZATO, E.; TEIXEIRA, W. G.; GONCALVES, A. O.; FONTANA, A.; CARDOSO, J. H.; MANSUR, K. Caracterização geoquímica do sambaqui da Fazenda Campos Novos - Cabo Frio (RJ). In: CONGRESSO BRASILEIRO DE GEOLOGIA, 48., 2016, Porto Alegre. As geotecnologias e o século XXI: anais... São Paulo: Sociedade Brasileira de Geologia, 2016.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Solos. |
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| 20. | | TEIXEIRA, W. G.; PACKER, A. P.; GONÇALVES, A. O.; POLIDORO, J. C. Dinâmica de íons nitrogenados na solução do solo num cafezal em Santo Antônio do Jardim - SP. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 32.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 16.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 14.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 11., 2016, Goiânia. Rumo aos novos desafios: anais... Goiânia: Sociedade Brasileira de Ciência do Solo, 2016. p. 442.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| Registros recuperados : 360 | |
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