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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
30/06/1995 |
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Data da última atualização: |
05/04/2017 |
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Autoria: |
STEUTER, A. A. |
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Título: |
C3/C4 production shift on seasonal burns-northern mixed prairie. |
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Ano de publicação: |
1987 |
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Fonte/Imprenta: |
Journal of Range Management, v.40, n.1, p.27-31, 1987. |
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Idioma: |
Inglês |
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Conteúdo: |
This study investigates the potential of fire to manipulate the balance of C3 (cool-season) and C4 (warm-season) herbage in 2 northern Mixed Prairie communities. The xeric high prairie community and mesic low prairie community were chosen to represent regional moisture extremes. Treatments includ dormant spring burn, mid-summer burn, dormant fall burn, and untreated. The high prairie community appears to be a C3-dominant type. All 3 burn treatments increased the C3 herbage fraction relative to untreated sites. Total production, however, was unaffected by treatment. The C3/C4 ratio of high prairie communities appears to be the result of long-term adaptation rather than short-term adjustments to fire or weather effects. Spring burning shifted low prairie communities towards C4 herbage relative to other treatments. This was due to an increase in C4 herbage (and total) rather than to a decrease in C3 herbage. The C3/C4 ratio of low prairie communities did appear to respond to short-term adjustments in moisture, temperature and light caused by the spring burn. The response of low prairie C3/C4 ratios to mid-summer and dormant fall buns appeared to be related to phenological and indirect weather effects rather than to changes in site microclimate caused by the fires. |
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Palavras-Chave: |
Comunidade nativa; Efeito; Effect; Fire; Native community; Native pasture; Potencia; Potential; Production. |
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Thesagro: |
Fogo; Pastagem Nativa; Produção; Queimada. |
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Thesaurus Nal: |
burning. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01996naa a2200289 a 4500
001 1784728
005 2017-04-05
008 1987 bl --- 0-- u #d
100 1 $aSTEUTER, A. A.
245 $aC3/C4 production shift on seasonal burns-northern mixed prairie.
260 $c1987
520 $aThis study investigates the potential of fire to manipulate the balance of C3 (cool-season) and C4 (warm-season) herbage in 2 northern Mixed Prairie communities. The xeric high prairie community and mesic low prairie community were chosen to represent regional moisture extremes. Treatments includ dormant spring burn, mid-summer burn, dormant fall burn, and untreated. The high prairie community appears to be a C3-dominant type. All 3 burn treatments increased the C3 herbage fraction relative to untreated sites. Total production, however, was unaffected by treatment. The C3/C4 ratio of high prairie communities appears to be the result of long-term adaptation rather than short-term adjustments to fire or weather effects. Spring burning shifted low prairie communities towards C4 herbage relative to other treatments. This was due to an increase in C4 herbage (and total) rather than to a decrease in C3 herbage. The C3/C4 ratio of low prairie communities did appear to respond to short-term adjustments in moisture, temperature and light caused by the spring burn. The response of low prairie C3/C4 ratios to mid-summer and dormant fall buns appeared to be related to phenological and indirect weather effects rather than to changes in site microclimate caused by the fires.
650 $aburning
650 $aFogo
650 $aPastagem Nativa
650 $aProdução
650 $aQueimada
653 $aComunidade nativa
653 $aEfeito
653 $aEffect
653 $aFire
653 $aNative community
653 $aNative pasture
653 $aPotencia
653 $aPotential
653 $aProduction
773 $tJournal of Range Management$gv.40, n.1, p.27-31, 1987.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| 161. |  | OLIVEIRA, A. A. R. Seleção de genótipos resistentes à gomose de Phytophthora. In: SOARES FILHO, W. dos S. (Ed.). Reunião técnica: obtenção, seleção e manejo de variedades porta-enxerto de citros adaptadas a estresses abióticos. Cruz das Almas: Embrapa Mandioca e Fruticultura, 2012. (Embrapa Mandioca e Fruticultura. Documentos, 200).| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 165. | | MAGALHÃES, A. A. de. Irrigação por sulcos. Petrolina: EMBRAPA-CPATSA, 1982. Não paginado. Trabalho apresentado no I Curso sobre Manejo de Solo e Água em Propriedades Agrícolas do Trópico Semi-Árido, 1982, out. Petrolina.| Tipo: Folder/Folheto/Cartilha |
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| Registros recuperados : 174.347 | |
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