Registro Completo |
Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
24/06/1997 |
Data da última atualização: |
31/03/2017 |
Autoria: |
VINTON, M. A.; HARTNETT, D. C.; FINCK, E. J.; BRIGGS, J. M. |
Título: |
Interactive effects of fire, bison (Bison bison) grazing and plant community composition in talgrass prairie. |
Ano de publicação: |
1993 |
Fonte/Imprenta: |
American Midland Naturalist, v.129, n.1, p.10-18, 1993. |
Idioma: |
Inglês |
Conteúdo: |
Fire and native large herbivore grazing were two important influences on the structure and function of North American grasslands. In 1998 and 1989 the inflkuence of fire regime on grazing patterns of North America bison (Bison bison) was studied on the Konza Prairie in northeastern Kansas. Bison grazing was spatially and temporally nonrandom and was influenced by fire regime and local plant community composition. During the growing season, bison were observed up to 3 x more frequently than expected on watersheds burned in the spring. Summer grazing was concentrated in large watershed areas (79-119 ha) dominated by warm-season, perennial, C4 grasses. During the autumm and winter, bison grazed both burned and unburned watersheds more uniformly but grazed most intensively in areas with large stands of cool-season, C3 grasses. On a smaller spatial scale (5-10 m2), bison selected patches during the growing season with low forb cover dominated by the perennial C4 grass, Andropogon gerardii. Grazed patches were larger on frequently burned than on infrequently burned watersheds. The importance of fire history in determining patterns of bison grazing over the landscape indicates that interactions between bison grazing and fire regime may be important to the composition and spatial heterogeneity of tallgrass prairie vegetation. |
Palavras-Chave: |
Community; Comunidade; Fire; Plant; Tallgras prairie. |
Thesagro: |
Fogo; Pastagem; Planta. |
Thesaurus Nal: |
Andropogon gerardii; Bison bison; grazing. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02104naa a2200289 a 4500 001 1791199 005 2017-03-31 008 1993 bl --- 0-- u #d 100 1 $aVINTON, M. A. 245 $aInteractive effects of fire, bison (Bison bison) grazing and plant community composition in talgrass prairie. 260 $c1993 520 $aFire and native large herbivore grazing were two important influences on the structure and function of North American grasslands. In 1998 and 1989 the inflkuence of fire regime on grazing patterns of North America bison (Bison bison) was studied on the Konza Prairie in northeastern Kansas. Bison grazing was spatially and temporally nonrandom and was influenced by fire regime and local plant community composition. During the growing season, bison were observed up to 3 x more frequently than expected on watersheds burned in the spring. Summer grazing was concentrated in large watershed areas (79-119 ha) dominated by warm-season, perennial, C4 grasses. During the autumm and winter, bison grazed both burned and unburned watersheds more uniformly but grazed most intensively in areas with large stands of cool-season, C3 grasses. On a smaller spatial scale (5-10 m2), bison selected patches during the growing season with low forb cover dominated by the perennial C4 grass, Andropogon gerardii. Grazed patches were larger on frequently burned than on infrequently burned watersheds. The importance of fire history in determining patterns of bison grazing over the landscape indicates that interactions between bison grazing and fire regime may be important to the composition and spatial heterogeneity of tallgrass prairie vegetation. 650 $aAndropogon gerardii 650 $aBison bison 650 $agrazing 650 $aFogo 650 $aPastagem 650 $aPlanta 653 $aCommunity 653 $aComunidade 653 $aFire 653 $aPlant 653 $aTallgras prairie 700 1 $aHARTNETT, D. C. 700 1 $aFINCK, E. J. 700 1 $aBRIGGS, J. M. 773 $tAmerican Midland Naturalist$gv.129, n.1, p.10-18, 1993.
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Embrapa Pantanal (CPAP) |
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