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| Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Pecuária Sul. |
Data corrente: |
23/09/2021 |
Data da última atualização: |
23/09/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BOAVISTA, L. da R.; TRINDADE, J. P. P.; OVERBECK, G. E.; MÜLLER, S. C. |
Afiliação: |
LIDIANE DA ROSA BOAVISTA, UFRGS; JOSE PEDRO PEREIRA TRINDADE, CPPSUL; GERHARD ERNST OVERBECK, UFRGS; SANDRA CRISTINA MÜLLER, UFRGS. |
Título: |
Effects of grazing regimes on the temporal dynamics of grassland communities. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Applied Vegetation Science, v. 22, n. 2, p. 326-335, Apr. 2019. |
Idioma: |
Inglês |
Conteúdo: |
Questions: Grazing management influences grassland community dynamics, but few studies exist on the effects of specific management regimes in subtropical grass- lands. Here, we ask how rotational and continuous grazing influences the composi- tion, diversity, and biomass production of natural grasslands in southern Brazil. Location: The study was conducted at four cattle farms within the south Brazilian grassland region (Campos Sulinos), in the upper area of the Camaquã river basin of Rio Grande do Sul, Brazil. Methods: On each farm, grassland that had previously been subjected to continuous grazing (freely grazed by cattle) was divided into two experimental units; one man- aged by rotational grazing and the other maintained under continuous grazing. In each experimental unit, 14 permanent plots were monitored over six years for spe- cies composition and species biomass. Data were analyzed using linear mixed models to evaluate the effects of grazing management strategies on composition dissimilar- ity, diversity indices, and plant biomass. Results: Grasslands under a rotational grazing regime changed steadily over the period of evaluation. Total biomass and species distribution patterns greatly differed from those in plots subjected to continuous grazing, leading to changes in species richness, dominance, and composition, as well as to an increase in overall plant biomass. Conclusions: Community changes during the six- year study period as a consequence of the distinct grazing treatments were evident. Grasslands under rotational grazing management benefitted from less selective grazing, enabling a more uniform growth of species within the communities, which in turn were richer at the end of the six- year experiment. In contrast, the proportion of grazing- resistant species or less- consumed species was higher under continuous grazing, where foraging by cattle appears to be more selective. Rotational grazing thus not only leads to higher species richness and diversity, but also to higher primary and, in consequence, secondary productivity MenosQuestions: Grazing management influences grassland community dynamics, but few studies exist on the effects of specific management regimes in subtropical grass- lands. Here, we ask how rotational and continuous grazing influences the composi- tion, diversity, and biomass production of natural grasslands in southern Brazil. Location: The study was conducted at four cattle farms within the south Brazilian grassland region (Campos Sulinos), in the upper area of the Camaquã river basin of Rio Grande do Sul, Brazil. Methods: On each farm, grassland that had previously been subjected to continuous grazing (freely grazed by cattle) was divided into two experimental units; one man- aged by rotational grazing and the other maintained under continuous grazing. In each experimental unit, 14 permanent plots were monitored over six years for spe- cies composition and species biomass. Data were analyzed using linear mixed models to evaluate the effects of grazing management strategies on composition dissimilar- ity, diversity indices, and plant biomass. Results: Grasslands under a rotational grazing regime changed steadily over the period of evaluation. Total biomass and species distribution patterns greatly differed from those in plots subjected to continuous grazing, leading to changes in species richness, dominance, and composition, as well as to an increase in overall plant biomass. Conclusions: Community changes during the six- year study period as a consequence of the distinct grazi... Mostrar Tudo |
Thesagro: |
Manejo; Pastagem; Pastejo. |
Categoria do assunto: |
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Marc: |
LEADER 02636naa a2200193 a 4500 001 2134724 005 2021-09-23 008 2019 bl uuuu u00u1 u #d 100 1 $aBOAVISTA, L. da R. 245 $aEffects of grazing regimes on the temporal dynamics of grassland communities.$h[electronic resource] 260 $c2019 520 $aQuestions: Grazing management influences grassland community dynamics, but few studies exist on the effects of specific management regimes in subtropical grass- lands. Here, we ask how rotational and continuous grazing influences the composi- tion, diversity, and biomass production of natural grasslands in southern Brazil. Location: The study was conducted at four cattle farms within the south Brazilian grassland region (Campos Sulinos), in the upper area of the Camaquã river basin of Rio Grande do Sul, Brazil. Methods: On each farm, grassland that had previously been subjected to continuous grazing (freely grazed by cattle) was divided into two experimental units; one man- aged by rotational grazing and the other maintained under continuous grazing. In each experimental unit, 14 permanent plots were monitored over six years for spe- cies composition and species biomass. Data were analyzed using linear mixed models to evaluate the effects of grazing management strategies on composition dissimilar- ity, diversity indices, and plant biomass. Results: Grasslands under a rotational grazing regime changed steadily over the period of evaluation. Total biomass and species distribution patterns greatly differed from those in plots subjected to continuous grazing, leading to changes in species richness, dominance, and composition, as well as to an increase in overall plant biomass. Conclusions: Community changes during the six- year study period as a consequence of the distinct grazing treatments were evident. Grasslands under rotational grazing management benefitted from less selective grazing, enabling a more uniform growth of species within the communities, which in turn were richer at the end of the six- year experiment. In contrast, the proportion of grazing- resistant species or less- consumed species was higher under continuous grazing, where foraging by cattle appears to be more selective. Rotational grazing thus not only leads to higher species richness and diversity, but also to higher primary and, in consequence, secondary productivity 650 $aManejo 650 $aPastagem 650 $aPastejo 700 1 $aTRINDADE, J. P. P. 700 1 $aOVERBECK, G. E. 700 1 $aMÜLLER, S. C. 773 $tApplied Vegetation Science$gv. 22, n. 2, p. 326-335, Apr. 2019.
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Embrapa Pecuária Sul (CPPSUL) |
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Registro Completo
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
17/12/2007 |
Data da última atualização: |
18/08/2023 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Autoria: |
SARMENTO, C. A. R.; LEDO, C. A. da S.; SILVA, S. de O. e; OLIVEIRA, M. M. de; MENDES, E. da S.; OLIVEIRA, M. L. A. |
Afiliação: |
Claudia Andrade Ribeiro Sarmento, UFRB; Carlos Alberto da Silva Ledo, CNPMF; Sebastião de Oliveira e Silva, CNPMF; Mayana Matos de Oliveira, UFRB; Evanéia da Silva Mendes, UFRB. |
Título: |
Avaliação da germinação de sementes de diplóides (AA) melhorados de bananeira. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: SIMPÓSIO BAIANO DE EDUCAÇÃO AMBIENTAL, 1., 2007, Cruz das Almas. Reciclando conceitos para desenvolver ações educativas com princípios ambientalistas. Cruz das Almas: [s.n.], [2007?]. |
Idioma: |
Português |
Notas: |
Mariana Lays Andrade Oliveira, UFRB. |
Conteúdo: |
A bananeira (Musa spp.) pertence à família botânica Musaceae e é originária do Extremo Oriente. A planta se caracteriza por apresentar caule suculento e subterrâneo (rizoma), cujo Falso tronco é formado pelas bases superpostas das folhas, folhas grandes e folhas em cachos que surgem em série à partir do chamado coração da bananeira. É uma planta tipicamente tropical, exige calor constante, precipitações bem distribuídas e elevada umidade para o seu bom desenvolvimento e produção. Sua altura pode variar de 1,8m a 8,0m. Dada a característica de emitir sempre novos rebentos o bananal é permanente na área, porém com as plantas se renovando ciclicamente. A banana é a fruta mais consumida no mundo e no Brasil, sendo um alimento energético, rico em carboidratos, sais minerais, como sódio, magnésio, fósforo e, especialmente, potássio. Apresenta predominância de vitamina A e C, contendo também as vitaminas B1, B2 e B6 contém pouca proteína e gordura. |
Thesagro: |
Banana; Fruta Tropical; Melhoramento Genético Vegetal. |
Categoria do assunto: |
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Marc: |
LEADER 01824nam a2200217 a 4500 001 1654230 005 2023-08-18 008 2007 bl uuuu u00u1 u #d 100 1 $aSARMENTO, C. A. R. 245 $aAvaliação da germinação de sementes de diplóides (AA) melhorados de bananeira.$h[electronic resource] 260 $aIn: SIMPÓSIO BAIANO DE EDUCAÇÃO AMBIENTAL, 1., 2007, Cruz das Almas. Reciclando conceitos para desenvolver ações educativas com princípios ambientalistas. Cruz das Almas: [s.n.], [2007?].$c2007 500 $aMariana Lays Andrade Oliveira, UFRB. 520 $aA bananeira (Musa spp.) pertence à família botânica Musaceae e é originária do Extremo Oriente. A planta se caracteriza por apresentar caule suculento e subterrâneo (rizoma), cujo Falso tronco é formado pelas bases superpostas das folhas, folhas grandes e folhas em cachos que surgem em série à partir do chamado coração da bananeira. É uma planta tipicamente tropical, exige calor constante, precipitações bem distribuídas e elevada umidade para o seu bom desenvolvimento e produção. Sua altura pode variar de 1,8m a 8,0m. Dada a característica de emitir sempre novos rebentos o bananal é permanente na área, porém com as plantas se renovando ciclicamente. A banana é a fruta mais consumida no mundo e no Brasil, sendo um alimento energético, rico em carboidratos, sais minerais, como sódio, magnésio, fósforo e, especialmente, potássio. Apresenta predominância de vitamina A e C, contendo também as vitaminas B1, B2 e B6 contém pouca proteína e gordura. 650 $aBanana 650 $aFruta Tropical 650 $aMelhoramento Genético Vegetal 700 1 $aLEDO, C. A. da S. 700 1 $aSILVA, S. de O. e 700 1 $aOLIVEIRA, M. M. de 700 1 $aMENDES, E. da S. 700 1 $aOLIVEIRA, M. L. A.
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