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| Registros recuperados: 13 | |
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| Mendonça, Jr.,Milton de S.; Schwertner,Cristiano Feldens; Grazia,Jocélia. |
| Riparian forests are important features of any ecosystem, especially on grassland and savannah vegetation types. However, riparian forests in southernmost Brazil have received much less attention than elsewhere. This is the first quantitative study of pentatomoid (Hemiptera) diversity in the Pampa biome, surveying riparian forests of brooks and rivers in the environs of the municipality of Bagé, Rio Grande do Sul state, southern Brazil. The aim was two-fold: taxonomic characterization of the fauna and a primary ecological study of bug diversity. Sweeping net and beating tray were used to sample trees and shrubs on the border of sampling sites; sampling was carried out during three consecutive days, from March 28th to 30th 2006. Overall 154 individuals of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acanthosomatidae; Corimelaenidae; Pentatomidae; Scutelleridae; Pampa biome. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000100026 |
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| Junges,João; Gottschalk,Marco Silva; Loreto,Elgion Lucio da Silva; Robe,Lizandra Jaqueline. |
| ABSTRACT There are approximately 130 species of MycodrosophilaOldenberg, 1914 worldwide, although only nine species were recorded in American countries so far, three of which are exclusively Nearctic, five exclusively Neotropical and one found in both biogeographic regions (Mycodrosophila projectans). Such a small number of American species is likely a consequence of collecting bias, which favors the capture of frugivorous drosophilids, and to the general absence of Neotropical Mycodrosophila studies in the last 50 years. Here, we describe two commonly sampled species of Mycodrosophila from the Amazonian and Pampa Brazilian biomes, which share morphological similarities with Mycodrosophila neoprojectans and M. projectans, respectively. We compared... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonian forest; Cytochrome oxidase subunit I; DNA barcoding; Mycophagous drosophilids; Pampa biome. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262016000100030 |
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| Mendes,Mayara Ferreira; Valer,Felipe Berti; Vieira,Júlia Gabriela Aleixo; Blauth,Monica Laner; Gottschalk,Marco Silva. |
| Abstract Although members of Drosophilidae are frequently the topic of ecological studies in Brazil, few have explored Restinga or, until only recently, Pampa biome environments. This study proposes to describe the diversity and temporal variation of the Drosophilidae assemblage from a Restinga forest of Rio Grande do Sul, Brazil. We performed monthly collections from February 2013 to January 2014 using yeasted banana-baited traps. A total of 25,093 individuals of 46 species were sampled. Drosophila simulans and the D. willistoni subgroup were the dominant taxa; D. polymorpha, D. immigrans, D. paraguayensis and Zygothrica orbitalis were of intermediate abundance, and the other 40 species were rare. Based on sampling effort estimators, our collections were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity analysis; Community ecology; New distribution record; Pampa biome; Taxonomic survey. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262017000300248 |
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| Medeiros,Renato Borges de; Focht,Telmo; Menegon,Leandro Luiz; Freitas,Mário Ruschel. |
| 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 different depth levels (soil surface and 2.5, 5, 10 and 20 cm) and seven exhumation dates. The blocks were allocated in natural grassland grazed by cattle, allocated in a 12-m-long transection. Fifty-four permeable nylon bags filled with 100 seeds in each division, with five vertical divisions, were buried in each row. Seven exhumation dates were used: the first on October 14, 2003 and the last on January 14, 2006.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological invasion; Invader species; Pampa biome; Recovered seeds; Seed bank; Surviving seeds. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014001100561 |
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| Focht,Telmo; Medeiros,Renato Borges de. |
| The objective of this research was to evaluate the effects of different types of disturbance on the ability of the natural grassland to avoid the invasion of Eragrostis plana Nees (South African lovegrass). The experiment was carried out in Dom Pedrito, Rio Grande do Sul, Brazil, in an area free of South African lovegrass, from Feb. 2004 to Apr. 2007. The treatments were: 1) grassland management regimes: exclusion; low grazing intensity (rotational grazing), ±10 cm; and high grazing intensity (continuous grazing), ±5 cm; 2) initial levels of soil disturbance: high grassland, ±10 cm; low grassland, ±5 cm height; and low grassland with scarified soil; 3) fertilization regimes: without fertilization; phosphorus; and nitrogen. The experimental design was a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Disturbance; Pampa biome; Pasture management; Resistance to invasion. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800003 |
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| Pinto,Marcelo Fett; Nabinger,Carlos; Boldrini,Ilsi Iob; Ferreira,Pedro Maria de Abreu; Setubal,Robberson Bernal; Trevisan,Rafael; Fedrigo,Jean Kássio; Carassai,Igor Justin. |
| Few studies have adequately described the floristic and structural features of natural grasslands associated with shallow basalt soils in southern Brazil. This study was carried out on natural grazing land used for livestock production in the municipality of Santana do Livramento, in the Campanha region of the state of Rio Grande do Sul, Brazil. The aim of the study was to describe the floristic and structural diversity of the area. The floristic list obtained comprises 229 plant taxa from 40 botanical families, with a predominance of the families Poaceae (62), Asteraceae (28), Fabaceae (16) and Cyperaceae (12). The estimated diversity and evenness in the community were 3.00 and 0.874, respectively. Bare soil and rock outcrops accounted for 19.3% of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diversity; Richness; Pampa biome; Forage species; Environmental gradient. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100017 |
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| Durigon,Jaqueline; Sperotto,Patrícia; Ferreira,Priscila Porto Alegre; Dettke,Greta Aline; Záchia,Renato Aquino; Farinaccio,Maria Ana; Seger,Guilherme Dubal dos Santos; Miotto,Silvia Teresinha Sfoggia. |
| ABSTRACT Most studies concerning climbing plants have focused on lianas, forest ecosystems, and tropical regions. Thus, the majority of existing information is not relevant to all climbing plants (lianas and vines) or all ecoregions of the world (forested and non-forested). We provide an update on floristic and distributional data available for climbing plants in Rio Grande do Sul, Brazil’s southernmost state, which is located within subtropical and temperate zones and includes a variety of forest and non-forest vegetation types. A total of 448 climbing plant species were confirmed and documented by voucher specimens, revealing a diversity similar to that registered for trees in the state (533). The significant contribution of climbing species to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest biome; Climbers; Lianas; Non-forest ecosystems; Pampa biome; Subtropical flora; Vines. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000400644 |
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| Teixeira,Marianne Pinheiro; Cruz,Litiele; Franco,Jeferson Luis; Vieira,Renara Bittencourt; Stefenon,Valdir Marcos. |
| 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 Brazilian Pampa. Additionally, among the listed plants, ten species were selected for in vitro testing of their potential antioxidant activity. A total of 56 plant species belonging to 33 botanical families were listed by the 115 interviewees. No significant difference in commercialized medicinal plant species, and very similar species richness was observed among the cities, indicating that the local... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ethnobiology; Ethnopharmacology; Gaúcho; Oxidative stress; Pampa biome. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100047 |
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| CONTERATO,IONARA F.; SCHIFINO-WITTMANN,MARIA TERESA; GUERRA,DIVANILDE; BÜTTOW,MIRIAM V.; AGNOL,MIGUEL DALL’; DAHMER,NAIR. |
| ABSTRACT Trifolium polymorphum Poir. is an amphicarpic forage legume from southern Brazil, Uruguay, Argentina, Paraguay and Chile. Information on the genetic diversity of natural populations in natural grasslands in southern Brazil is limited. In order to increase the knowledge about this species, an analysis of the genetic diversity was carried out in 10 natural populations of T. polymorphum with the use of 20 microsatellite markers. The expected heterozygosity in T. polymorphum populations ranged from 0.40 to 0.43, with a mean of 0.42. A total of 193 alleles were detected with a mean of 9.3 alleles per locus and polymorphic information content (PIC) for these markers of 0.62 to 0.89 with a mean of 0.84.The grouping based on the Jaccard’s coefficient of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genetic variability; Microsatellites; Natural grasslands; Pampa biome. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401685 |
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| MENEZES,LUCIANA S.; MÜLLER,SANDRA C.; OVERBECK,GERHARD E.. |
| ABSTRACT The natural vegetation of Southern Brazil's coastal region includes grasslands formations that are poorly considered in conservation policy, due to the lack of knowledge about these systems. This study reports results from a regional-scale survey of coastal grasslands vegetation along a 536 km gradient on southern Brazil. We sampled 16 sites along the coastal plain with 15 plots (1 m²) per site. All sites were grazed by cattle. We estimated plant species cover, vegetation height, percentage of bare soil, litter and manure, and classified species according to their growth forms. We found 221 species, 14 of them exotic and two threatened. The prostate grasses: Axonopus aff.affinis, Paspalum notatum and P. pumilumwere among the most important... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pampa biome; Campos; Conservation; Grazing; Sandy soil. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502081 |
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| Soares,Émerson Mendes; Quadros,Fernando Luiz Ferreira de; Carvalho,Régis Maximiliano Roos de; Oliveira,Leandro Bittencourt de; Jochims,Felipe; Dutra,Gabriela Machado; Fernandes,Augusto Miranda; Trindade,José Pedro Pereira; Ilha,Gustavo Freitas. |
| The aim of this study was to evaluate the performance of beef heifers in natural grassland under continuous and rotational grazing during the autumn-winter period. The treatments were distributed in a completely randomized design and conducted using the forage mass above eight cm and 50% of the leaf blades mass of tussocks. The animals were Brangus beef heifers with initial body weight of 258kg. The variables evaluated were available forage mass (FMa), leaf blades mass of tussocks (LBMt), real forage allowance (FAr), sward height of the lower stratum (HLS), crude protein (CP), neutral detergent fiber (NDF), organic matter digestibility (OMD), total digestible nutrients (TDN), average daily gain (ADG), body condition score (BCS), reproductive tract score... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pampa biome; Reproductive tract score; Grazing methods; Heifers rearing; Sward height.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001859 |
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| Registros recuperados: 13 | |
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