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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
23/09/2021 |
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Data da última atualização: |
23/09/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BOAVISTA, L. da R.; TRINDADE, J. P. P.; OVERBECK, G. E.; MÜLLER, S. C. |
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Afiliação: |
LIDIANE DA ROSA BOAVISTA, UFRGS; JOSE PEDRO PEREIRA TRINDADE, CPPSUL; GERHARD ERNST OVERBECK, UFRGS; SANDRA CRISTINA MÜLLER, UFRGS. |
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Título: |
Effects of grazing regimes on the temporal dynamics of grassland communities. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Applied Vegetation Science, v. 22, n. 2, p. 326-335, Apr. 2019. |
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Idioma: |
Inglês |
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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 |
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Thesagro: |
Manejo; Pastagem; Pastejo. |
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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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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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| 1. |  | SAINZ, R. D.; MAGNABOSCO, C. de U. Analise de sistemas agropastoris. In: WORKSHOP INTERNACIONAL PROGRAMA DE INTEGRACAO AGRICULTURA E PECUARIA PARA O DESENVOLVIMENTO SUSTENTAVEL DAS SAVANAS TROPICAIS SULAMERICANAS, 2001, Santo Antonio de Goias. Anais... Santo Antonio de Goias: Embrapa Arroz e Feijao, 2001. p. 10-28| Biblioteca(s): Embrapa Cerrados. |
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| 3. | | MAGNABOSCO, C. de U.; MANICARDI, F.; BARBOSA, V.; ARAUJO, F. C. R.; SAINZ, R. D. Analise de caracteristicas de carcaca e crescimento em bovinos da raca Brahman criados na regiao do Mato Grosso- resultados preliminares. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 40., 2003, Santa Maria, RS. Otimizando a producao animal: anais. Santa Maria: SBZ: UFSM, 2003. 1 CD-ROM.| Biblioteca(s): Embrapa Cerrados. |
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| 4. | | SAINZ, R. D.; BARIONI, L. G.; PAULINO, P. V.; VALADARES FILHO, S. C.; OLTJEN, J. W. Growth patterns of Nellore vc British beef cattle breeds assessed using a dynamic, mechanistic model of cattle growth and composition. In: KEBREAB, E.; DIJKSTRA, J.; BANNINK, A.; GERRITS, W. J. J.; FRANCE, J. (Ed.). Nutrient digestion and utilization in farm animals: modelling approaches. Oxfordshire: CABI, 2006. p. 160-170.| Biblioteca(s): Embrapa Cerrados. |
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| 6. | | MAGNABOSCO, C. de U.; LOPES, F. B.; MIYAGI, E. S.; LÔBO, R. B.; SAINZ, R. D. Multivariate approach of inter-relationships among growth, consumption and carcass traits in nellore cattle. Revista Ciência Agronômica, v. 45, n. 1, p. 168-176, 2014. p. 168-176| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
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| 9. | | THOMPSON, V. A.; BARIONI, L. G.; RUMSEY, T. R.; FADEL, J. G.; SAINZ, R. D. The development of a dynamic, mechanistic, thermal balance model for Bos indicus and Bos taurus. Journal of Agricultural Science, Cambridge, v. 152, n. 3, p. 464-482, June 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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| 10. | | TEDESCHI, L. O.; FOX, D. G.; SAINZ, R. D.; BARIONI, L. G.; BOIN, C. Using mathematical models in ruminant nutrition. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 41., 2004, Campo Grande, MS. A produção animal e a segurança alimentar: anais dos simpósios. Campo Grande, MS: Sociedade Brasileira de Zootecnia: Embrapa Gado de Corte, 2004. p. 228-238.| Biblioteca(s): Embrapa Gado de Corte. |
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| 11. | | OLTJEN, J. W.; SAINZ, R. D.; BARIONI, L. G.; MEDEIROS, S. R. de. Rate of protein growth and energy for maintenance parameter changes in the Davis Growth Model. In: EAAP INTERNATIONAL SYMPOSIUM ON ENERGY AND PROTEIN METABOLISM AND NUTRITION, 5., 2016, Krakow, Poland. Proceedings... Wageningen, Reino dos Países Baixos: Wageningen Academic Pulbishers, 2016. p. 69-70 (EAAP publication, 137). Edited by: Jacek Skomial, Hélène Lapierre| Tipo: Artigo em Anais de Congresso |
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| 13. | | LOPES, F. B.; MAGNABOSCO, C. de U.; MAMEDE, M. M. S.; NAKAGAWA, A. F.; SAINZ, R. D. Ajustes de curvas de crescimento de um rebanho de bovinos da raça Nelore mocho. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 49., 2012, Brasília. A produção animal no mundo em transformação: anais. Brasília, DF: SBZ, 2012. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
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| 14. | | LOPES, F. B.; MAGNABOSCO, C. de U.; MAMEDE, M. M. S.; NAKAGAWA, A. F.; SAINZ, R. D. Abordagem multivariada das inter-relações entre características de crescimento e consumo alimentar de bovinos da raça Nelore mocho. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 49., 2012, Brasília. A produção animal no mundo em transformação: anais. Brasília, DF: SBZ, 2012. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
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| 15. | | PADUA, J. T.; SAINZ, R. D.; MIYAGI, E. S.; MAGNABOSCO, C. de O.; PRADO, C. S.; PACHECO, R. Avaliacao do desempenho e de caracteristicas de carcaca de bovinos de corte confinados, inteiros e castrados com e sem synovex-s. In: CONGRESSO BRASILEIRO DE CIENCIA E TECNOLOGIA DE CARNES, 1., 2001, Sao Pedro,SP. Carne: qualidade e seguranca para os consumidores do novo milenio: anais: palestras e trabalhos cientificos. Sao Pedro: CTG, 2001. p. 90-91.| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 92 | |
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