Pampa Biome
Mostrando 13-24 de 41 artigos, teses e dissertações.
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13. Forage potential of native ecotypes of Paspalum notatum and P. guenoarum
ABSTRACT The Paspalum genus includes several species that are important for livestock in Rio Grande do Sul, such as P. notatum and P. guenoarum, typical of native pastures of the Pampa biome. The aim of this study was to investigate forage production and chemical composition of four ecotypes of these species in relation to the cv. ‘Pensacola’ (P. notatum
An. Acad. Bras. Ciênc.. Publicado em: 14/08/2017
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14. Selection, isolation, and identification of fungi for bioherbicide production
Abstract Production of a bioherbicide for biological control of weeds requires a series of steps, from selection of a suitable microbial strain to final formulation. Thus, this study aimed to select fungi for production of secondary metabolites with herbicidal activity using biological resources of the Brazilian Pampa biome. Phytopathogenic fungi were isolat
Braz. J. Microbiol.. Publicado em: 2017-03
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15. Replacement of native vegetation alters the soil microbial structure in the Pampa biome
ABSTRACT: Land use change is one of the the major factors related to soil degradation and alterations in soil microbial diversity and structure. In this study, we aimed to evaluate the microbial shifts caused by deforestation of a small area of a natural forest for the introduction of a pasture in the Brazilian Pampa. The microbial abundance and structure we
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-02
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16. Temporal profiles of vegetation indices for characterizing grazing intensity on natural grasslands in Pampa biome
ABSTRACT The Pampa biome is an important ecosystem in Brazil that is highly relevant to livestock production. The objective of this study was to analyze the potential use of vegetation indices to discriminate grazing intensities on natural grasslands in the Pampa biome. Moderate Resolution Imaging Spectroradiometer (MODIS) Normalized Difference Vegetation In
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-08
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17. Ethnobotany and antioxidant evaluation of commercialized medicinal plants from the Brazilian Pampa
Despite the importance of medicinal plants for the healthcare of local people, the knowledge about medicinal species used in the Pampa biome has been neglected over the years. In this study, an ethnobotanical survey was employed aiming to characterize the species richness and diversity of commercialized medicinal plant species in five cities within the Brazi
Acta Bot. Bras.. Publicado em: 2016-03
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18. Stichelia pelotensis (Lepidoptera, Riodinidae): conservation, notes, and rediscovery of an endangered butterfly from southern Brazil
ABSTRACT Stichelia pelotensis (Lepidoptera, Riodinidae) is an endemic and threatened butterfly from the Pampa biome in southern Brazil, and has not been recorded in its type locality in the last 56 years. Recently, a population was found in two sites from extreme south Brazil, Pelotas, Rio Grande do Sul state. These records are an important find given the co
Rev. Bras. entomol.. Publicado em: 2016-03
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19. Microbial quality of soil from the Pampa biome in response to different grazing pressures
The aim of this study was to evaluate the impact of different grazing pressures on the activity and diversity of soil bacteria. We performed a long-term experiment in Eldorado do Sul, southern Brazil, that assessed three levels of grazing pressure: high pressure (HP), with 4% herbage allowance (HA), moderate pressure (MP), with 12% HA, and low pressure (LP),
Genet. Mol. Biol.. Publicado em: 01/05/2015
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20. Seed longevity of Eragrostis plana Nees buried in natural grassland soil
The objective of this research was to evaluate the seed longevity of Eragrostis plana Nees buried at different soil depths, in a natural-grassland area in the Pampa biome (46 m altitude, 30º05´S and 51º40´W) of Rio Grande do Sul State, Brazil. The experimental design was a split-plot type in complete blocks with two factors: seeds buried at five differen
R. Bras. Zootec.. Publicado em: 2014-11
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21. LC/ESI-MS method applied to characterization of flavonoids glycosides in B. forficata subsp. pruinosa
Bauhinia forficata is used in folk medicine for its hypoglycemiant effect. In the south of Brazil, the subspecies pruinosa is found in a region with the characteristic flora, pampa biome. This species has been consumed by the local population as a tea for diabetes treatment. We studied the chemical composition of hydroethanolic extracts using LC/ESI-MS. The
Quím. Nova. Publicado em: 2014-06
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22. The role of phytophysiognomies and seasonality on the structure of ground-dwelling anuran (Amphibia) in the Pampa biome, southern Brazil
RESUMO Considerando que o uso do habitat pelos anfíbios está relacionado tanto com clima quanto com características ambientais, testamos as hipóteses de que taxocenoses de anuros encontradas em diferentes fitofisionomias e estações diferem em estrutura. Adicionalmente, buscamos espécies que podem ser indicadoras de habitat e estações. O estudo foi
An. Acad. Bras. Ciênc.. Publicado em: 30/07/2013
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23. Morphogenesis of native grasses of Pampa Biome under nitrogen fertilization
Morphogenetic and structural characteristics of the native grasses of the Pampa Biome Andropogon lateralis, Aristida laevis, Axonopus affinis, Erianthus angustifolius, Paspalum notatum, Paspalum plicatulum, Piptochaetium montevidense and Sorghastrum pellitum were evaluated as to the effect of nitrogen (N) fertilization (zero and 100 kg N/ha). The experimenta
R. Bras. Zootec.. Publicado em: 2013-01
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24. MORFOGÊNESE DE GRAMÍNEAS NATIVAS DO RIO GRANDE DO SUL (BRASIL) SUBMETIDAS A PASTOREIO ROTATIVO / MORPHOGENESIS OF RIO GRANDE DO SUL (BRAZIL) NATIVE GRASSES UNDER ROTATIONAL GRAZING
O conhecimento das respostas das plantas à desfolha, com ênfase para os processos de crescimento e senescência, é necessário a fim de melhorar o uso e eficiência das pastagens naturais. Com base nisso, o trabalho teve por objetivo estudar as características morfogênicas de gramíneas nativas predominantes na região central do Rio Grande do Sul (RS),
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012