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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
09/01/1998 |
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Data da última atualização: |
05/04/2017 |
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Autoria: |
PAINTER, E. L; DETLING, J. K.; STEINGRAEBER, D. A. |
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Título: |
Plant morphology and grazing history: relationships between native grasses and herbivores. |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Vegetatio, v.106, p.37-62, 1993. |
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Idioma: |
Inglês |
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Conteúdo: |
Grazing-related, intraspecific, morphological variation was studied in four North American grasses (Bouteloua gracilis, Agropyron smithii, Schizachrium scoparium, and Andropogon gerardii) from eight locales in Wind Cave National Park, South Dakota: three locales currently occupied and heavily grazed by prairie dogs (Cynomys ludovicianus), colonized (since settlement) for 2-100 years, where native ungulates concentrate grazing activities; an extinct colony locale from which prairie dogs were removed 30 yeras previously, moderately to lightly grazed by ungulates; two noncolony locales, moderately to lightly grazed by ungulates; and two locales from within a 50-yeras-old grazing exclosure, with no known history of grazing by prairie dogs nor any recent grazing by ungulates. Data were collected both in situ and in common environments. Active-colony plants were more frequently and more heavily grazed than those at other grazed localles. In situ, plants from heavily grazed populations were smaller and more prostrate than those from populations, with little or no grazing (including the extinct colony) and interpopulation variation corresponded to current grazer use. After several growing seasons in common environments, there were still significant interpopulations differences; however, variationn often corresponded with grazing history. Although differences between active-colony and noncolony plants were somewhat reduced (indicanting some phenotypic plasticity), active-colony plants were still smaller and more prostrate. However , extinct-colony plants more closely resembled active-colony plants than noncolony plants. Morphological variation among these populations is the result of more than simple grazer use; historical factors and the dynamics nature of the grazing regimes are also contributing factors. MenosGrazing-related, intraspecific, morphological variation was studied in four North American grasses (Bouteloua gracilis, Agropyron smithii, Schizachrium scoparium, and Andropogon gerardii) from eight locales in Wind Cave National Park, South Dakota: three locales currently occupied and heavily grazed by prairie dogs (Cynomys ludovicianus), colonized (since settlement) for 2-100 years, where native ungulates concentrate grazing activities; an extinct colony locale from which prairie dogs were removed 30 yeras previously, moderately to lightly grazed by ungulates; two noncolony locales, moderately to lightly grazed by ungulates; and two locales from within a 50-yeras-old grazing exclosure, with no known history of grazing by prairie dogs nor any recent grazing by ungulates. Data were collected both in situ and in common environments. Active-colony plants were more frequently and more heavily grazed than those at other grazed localles. In situ, plants from heavily grazed populations were smaller and more prostrate than those from populations, with little or no grazing (including the extinct colony) and interpopulation variation corresponded to current grazer use. After several growing seasons in common environments, there were still significant interpopulations differences; however, variationn often corresponded with grazing history. Although differences between active-colony and noncolony plants were somewhat reduced (indicanting some phenotypic plasticity), active-colony plant... Mostrar Tudo |
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Palavras-Chave: |
America do Norte; Ecotypic differentiation; Free-roaming ungulates; Herbivoro; Herbivory; Interpopulation variation; Morfologia; Morphology; Native grasses; Plant; Prairie-dog colonies. |
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Thesagro: |
Pastagem Nativa; Planta. |
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Thesaurus Nal: |
North America. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02678naa a2200313 a 4500
001 1791978
005 2017-04-05
008 1993 bl --- 0-- u #d
100 1 $aPAINTER, E. L
245 $aPlant morphology and grazing history$brelationships between native grasses and herbivores.
260 $c1993
520 $aGrazing-related, intraspecific, morphological variation was studied in four North American grasses (Bouteloua gracilis, Agropyron smithii, Schizachrium scoparium, and Andropogon gerardii) from eight locales in Wind Cave National Park, South Dakota: three locales currently occupied and heavily grazed by prairie dogs (Cynomys ludovicianus), colonized (since settlement) for 2-100 years, where native ungulates concentrate grazing activities; an extinct colony locale from which prairie dogs were removed 30 yeras previously, moderately to lightly grazed by ungulates; two noncolony locales, moderately to lightly grazed by ungulates; and two locales from within a 50-yeras-old grazing exclosure, with no known history of grazing by prairie dogs nor any recent grazing by ungulates. Data were collected both in situ and in common environments. Active-colony plants were more frequently and more heavily grazed than those at other grazed localles. In situ, plants from heavily grazed populations were smaller and more prostrate than those from populations, with little or no grazing (including the extinct colony) and interpopulation variation corresponded to current grazer use. After several growing seasons in common environments, there were still significant interpopulations differences; however, variationn often corresponded with grazing history. Although differences between active-colony and noncolony plants were somewhat reduced (indicanting some phenotypic plasticity), active-colony plants were still smaller and more prostrate. However , extinct-colony plants more closely resembled active-colony plants than noncolony plants. Morphological variation among these populations is the result of more than simple grazer use; historical factors and the dynamics nature of the grazing regimes are also contributing factors.
650 $aNorth America
650 $aPastagem Nativa
650 $aPlanta
653 $aAmerica do Norte
653 $aEcotypic differentiation
653 $aFree-roaming ungulates
653 $aHerbivoro
653 $aHerbivory
653 $aInterpopulation variation
653 $aMorfologia
653 $aMorphology
653 $aNative grasses
653 $aPlant
653 $aPrairie-dog colonies
700 1 $aDETLING, J. K.
700 1 $aSTEINGRAEBER, D. A.
773 $tVegetatio$gv.106, p.37-62, 1993.
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Registro original: |
Embrapa Pantanal (CPAP) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
26/03/2008 |
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Data da última atualização: |
12/04/2010 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SILVA, L. A. C.; COSTA, C.; SANTOS, S. A.; COMASTRI FILHO, J. A.; GARCIA, J. B. |
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Afiliação: |
Laura Aparecida Carvalho da Silva, CAPES; Ciniro Costa, UNESP; Sandra Aparecida Santos, Embrapa Pantanal; José Anibal Comastri Filho, Embrapa Pantanal; João Batista Garcia, Embrapa Pantanal. |
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Título: |
Germinabilidade das sementes da gramínia nativa Mesosetum chasease, sub-região da Nhecolândia, Pantanal. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: MOSTRA CIENTÍFICA DE CIENTÍFICAS AGRÁRIAS, 3.; MOSTRA CIENTÍFICA DA FMVZ, 11.; REUNIÃO CIENTÍFICA DA FAZENDA LAGEADO, 14. Botucatu, 2007. [Resumos]...[Botucatu]: [Unesp], 2007. |
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Idioma: |
Português |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00626naa a2200157 a 4500
001 1783926
005 2010-04-12
008 2007 bl --- 0-- u #d
100 1 $aSILVA, L. A. C.
245 $aGerminabilidade das sementes da gramínia nativa Mesosetum chasease, sub-região da Nhecolândia, Pantanal.
260 $c2007
700 1 $aCOSTA, C.
700 1 $aSANTOS, S. A.
700 1 $aCOMASTRI FILHO, J. A.
700 1 $aGARCIA, J. B.
773 $tIn: MOSTRA CIENTÍFICA DE CIENTÍFICAS AGRÁRIAS, 3.; MOSTRA CIENTÍFICA DA FMVZ, 11.; REUNIÃO CIENTÍFICA DA FAZENDA LAGEADO, 14. Botucatu, 2007. [Resumos]...[Botucatu]: [Unesp], 2007.
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