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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
21/05/1996 |
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Data da última atualização: |
21/05/1996 |
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Autoria: |
PHILLIPS, J. F. |
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Título: |
Fire: its influence on biotic communities and physical factors in South and East Africa. |
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Ano de publicação: |
1930 |
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Fonte/Imprenta: |
South African Journal of Science, v.27, p.352-367, Nov.1930. |
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Idioma: |
Inglês |
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Conteúdo: |
In South and East Africa the influences of the age-old practice of firing vegetation are of the first biological and economic importance. Despite the popular interest exhibited in the effects of burning vegetation, our scientific information requires augmenting considerably. An attempt is made to ouline the more important, more easily discernible changes in the vegetation following firing, in (i) Climax Grassland, (ii) Tree-and-Grass Savanna developing to either Deciduous or Evergreen Scrub Climaxes, (iii) Macchia or "Fijnbosch," (iv) Sub- tropical and Tropical Evergreen Forest. That vast stretches of Southern and Eastern Afri- ca have their vegetation kept in an "open" or non-climax condition, by annual and perio- dic fires seems plain from the evidence upon the ground. It is held that fire in the Tree-and Grass Savannas has played no little part in the development of certain growth-forms in plants. Firing in the Savanna regions profoundly affects the behaviour of the animals asso- ciated with the vegetation. From the relatively small amount of intensive work that has be- en accomplished, no matter what portion of the world is considered, it seems that firing, according to climate, soil and vegetational conditions obtaining within a region, brings about changes of far-reaching consequences in the physical, chemical and biological conditions in soils. Suggestions regarding probable fruitful lines for future research include quadrat and experimental studies in various climatic, soil and vegetational types, investiga- tion of certain fundamentally important soil characteristics, collection of data upon "fire" plant-indicators, and application of all information won to practical problems in vegetation management.In reviewing the state of our knowledge as to the influences of firing, it is held that neither those who consider firing as having no evil effects nor yet those who state it to have no merits are correct. Controlled firing is a useful and oftentimes necessary agent in veld management and in Tsetse-fly control. It is urged that generalisations regar- ding the influences of firing should be made only after the local circumstances have been examined. MenosIn South and East Africa the influences of the age-old practice of firing vegetation are of the first biological and economic importance. Despite the popular interest exhibited in the effects of burning vegetation, our scientific information requires augmenting considerably. An attempt is made to ouline the more important, more easily discernible changes in the vegetation following firing, in (i) Climax Grassland, (ii) Tree-and-Grass Savanna developing to either Deciduous or Evergreen Scrub Climaxes, (iii) Macchia or "Fijnbosch," (iv) Sub- tropical and Tropical Evergreen Forest. That vast stretches of Southern and Eastern Afri- ca have their vegetation kept in an "open" or non-climax condition, by annual and perio- dic fires seems plain from the evidence upon the ground. It is held that fire in the Tree-and Grass Savannas has played no little part in the development of certain growth-forms in plants. Firing in the Savanna regions profoundly affects the behaviour of the animals asso- ciated with the vegetation. From the relatively small amount of intensive work that has be- en accomplished, no matter what portion of the world is considered, it seems that firing, according to climate, soil and vegetational conditions obtaining within a region, brings about changes of far-reaching consequences in the physical, chemical and biological conditions in soils. Suggestions regarding probable fruitful lines for future research include quadrat and experimental studies in various climati... Mostrar Tudo |
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Palavras-Chave: |
Biotic communities; Comunidade biotica; Fator fisico; Fire; Influences; Influencia; Physical factors; South and East Africa. |
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Thesagro: |
Fogo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02831naa a2200229 a 4500
001 1788518
005 1996-05-21
008 1930 bl --- 0-- u #d
100 1 $aPHILLIPS, J. F.
245 $aFire$bits influence on biotic communities and physical factors in South and East Africa.
260 $c1930
520 $aIn South and East Africa the influences of the age-old practice of firing vegetation are of the first biological and economic importance. Despite the popular interest exhibited in the effects of burning vegetation, our scientific information requires augmenting considerably. An attempt is made to ouline the more important, more easily discernible changes in the vegetation following firing, in (i) Climax Grassland, (ii) Tree-and-Grass Savanna developing to either Deciduous or Evergreen Scrub Climaxes, (iii) Macchia or "Fijnbosch," (iv) Sub- tropical and Tropical Evergreen Forest. That vast stretches of Southern and Eastern Afri- ca have their vegetation kept in an "open" or non-climax condition, by annual and perio- dic fires seems plain from the evidence upon the ground. It is held that fire in the Tree-and Grass Savannas has played no little part in the development of certain growth-forms in plants. Firing in the Savanna regions profoundly affects the behaviour of the animals asso- ciated with the vegetation. From the relatively small amount of intensive work that has be- en accomplished, no matter what portion of the world is considered, it seems that firing, according to climate, soil and vegetational conditions obtaining within a region, brings about changes of far-reaching consequences in the physical, chemical and biological conditions in soils. Suggestions regarding probable fruitful lines for future research include quadrat and experimental studies in various climatic, soil and vegetational types, investiga- tion of certain fundamentally important soil characteristics, collection of data upon "fire" plant-indicators, and application of all information won to practical problems in vegetation management.In reviewing the state of our knowledge as to the influences of firing, it is held that neither those who consider firing as having no evil effects nor yet those who state it to have no merits are correct. Controlled firing is a useful and oftentimes necessary agent in veld management and in Tsetse-fly control. It is urged that generalisations regar- ding the influences of firing should be made only after the local circumstances have been examined.
650 $aFogo
653 $aBiotic communities
653 $aComunidade biotica
653 $aFator fisico
653 $aFire
653 $aInfluences
653 $aInfluencia
653 $aPhysical factors
653 $aSouth and East Africa
773 $tSouth African Journal of Science$gv.27, p.352-367, Nov.1930.
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Registro original: |
Embrapa Pantanal (CPAP) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
25/01/2012 |
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Data da última atualização: |
25/01/2012 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
GUADAGNIN, J. P.; RODRIGUES, L. R.; CARGNELUTTI FILHO, A.; EMYGDIO, B. M.; MACHADO, J. R. de A.; AMES, C. G.; BUZZETTI, D.; SANTOS, F. M. dos; GARRAFA, R.; TRENTIN, R. |
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Afiliação: |
JOSÉ PAULO GUADAGNIN, FEPAGRO; LIA ROSANE RODRIGUES, FEPAGRO; ALBERTO CARGNELUTTI FILHO; BEATRIZ MARTI EMYGDIO, CPACT; JANE RODRIGUES DE ASSIS MACHADO, CNPMS; CLAUDEMIR G. AMES, EMATER; DEJAMO BUZZETTI, EMATER; FERNANDO MACHADO DOS SANTOS, IFRS; RENATO GARRAFA, SOCIEDADE EDUCACIONAL TRÊS DE MAIO.; RENATO TRENTIN, MONSANTO. |
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Título: |
Avaliação de cultivares de milho de ciclo superprecoce para indicação no estado do Rio Grande do Sul - safra 2010/2011. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: REUNIÃO TÉCNICA ANUAL DO MILHO, 56.; REUNIÃO TÉCNICA ANUAL DO SORGO, 39., 2011, Ijui. Atas e resumos. Porto Alegre: FEPAGRO, 2011. p. 15. |
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Idioma: |
Português |
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Thesagro: |
Variedade; Zea Mays. |
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Thesaurus NAL: |
Varieties. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/52913/1/Avaliacao-cultivares-6.pdf
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Marc: |
LEADER 00849nam a2200241 a 4500
001 1913450
005 2012-01-25
008 2011 bl uuuu u00u1 u #d
100 1 $aGUADAGNIN, J. P.
245 $aAvaliação de cultivares de milho de ciclo superprecoce para indicação no estado do Rio Grande do Sul - safra 2010/2011.$h[electronic resource]
260 $aIn: REUNIÃO TÉCNICA ANUAL DO MILHO, 56.; REUNIÃO TÉCNICA ANUAL DO SORGO, 39., 2011, Ijui. Atas e resumos. Porto Alegre: FEPAGRO, 2011. p. 15.$c2011
650 $aVarieties
650 $aVariedade
650 $aZea Mays
700 1 $aRODRIGUES, L. R.
700 1 $aCARGNELUTTI FILHO, A.
700 1 $aEMYGDIO, B. M.
700 1 $aMACHADO, J. R. de A.
700 1 $aAMES, C. G.
700 1 $aBUZZETTI, D.
700 1 $aSANTOS, F. M. dos
700 1 $aGARRAFA, R.
700 1 $aTRENTIN, R.
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Embrapa Milho e Sorgo (CNPMS) |
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