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| Registros recuperados: 34 | |
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| Cordeiro, Natielle Gomes; Pereira, Kelly Marianne Guimarães; Terra, Marcela de Castro Nunes Santos; Mello, José Márcio de. |
| The Cerrado has a wide diversity of fauna and flora, and the knowledge of its horizontal structure, in different time intervals allows the prediction of its structural and floristic characteristics. The aim of this study was to evaluate the changes in structure and composition of tree community in three fragments of Cerrado with low anthropization, in an interval of 11 years at Minas Gerais state. Rectangular plots of fixed size were sampled, measuring stem diameter and height of all living arboreal individuals with diameter at 1.30 meters above ground (DBH) ≥ 5 cm. The tree vegetation dynamics study of the areas was performed, as well as the floristic analysis and the diametric structure. Considering all fragments and years of measurement, the recruitment... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tree community dynamics; Diversity; Ingrowth; Recruitment; Similarity; Vegetation. tree community dynamics; Diversity; Ingrowth; Recruitment; Similarity; Vegetation.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/48357 |
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| Felisberto, Sirlene Aparecida; Universidade Federal de Goiás; Rodrigues, Liliana; Universidade Estadual de Maringá. |
| Periphytic algal community in artificial and natural substratum in a tributary of the Rosana reservoir (Corvo Stream, Paraná State, Brazil). This study evaluated the heterogeneity in periphytic algal community, under the influence of time colonization on artificial substratum. We also examined which abiotic variables most influenced the community in natural and artificial substratum. Egeria najas Planchon was used as natural substratum, and a plastic plant, as artificial. This experiment was carried out in a lateral arm from Rosana Reservoir, formed by Corvo Stream (Paranapanema river basin), in the period from November 21st to December 12nd, 2003, characterized as a warm and rainy period. Changes in species composition were assessed using the similarity... |
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Palavras-chave: 2.00.00.00-6; 2.05.02.00-1 Ecology; Colonization; Phycoperiphyton; Zygnemaphyceae; Similarity Ecologia Ecology; Colonization; Phycoperiphyton; Zygnemaphyceae; Similarity. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4627 |
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| SOBOLESKI,VANESSA F.; HIGUCHI,PEDRO; SILVA,ANA CAROLINA DA; SILVA,MARIELE A.F. DA; NUNES,AMANDA S.; LOEBENS,RODINELI; SOUZA,KARINE DE; FERRARI,JHENIFFER; LIMA,CARLA L.; KILCA,RICARDO V.. |
| ABSTRACT We aimed to investigate the taxonomic and functional variations of tree component of Araucaria Forest (AF) areas located along an altitudinal gradient (700, 900 and 1,600 m asl), in the southern region of Brazil. The functional traits determined were leaf area, specific leaf area, wood density, maximum potential height and dispersal syndromes and deciduousness. The data were analyzed through a functional and taxonomic dissimilarity dendrograms, community-weighted mean trait values, parametric and nonparametric tests, and Principal Component Analysis. The largest floristic-structural similarity was observed between the lower altitude areas (700 and 900 m asl), whose Bray-Curtis distance was 0.63. The area at 700 m asl was characterized by a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Functional traits; Altitude; Similarity; Subtropical forest. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502219 |
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| PADET,JACQUES; COTTA,RENATO M.; MLADIN,EMILIA C.; PADET,COLETTE. |
| This paper aims to renew interest on mixed thermal convection research and to emphasize three issues that arise from the present analysis: (i) a clear definition of the reference temperature in the Boussinesq approximation; (ii) a practical delimitation of the three convective modes, which are the forced convection (FC), mixed convection (MC) and natural (or free) convection (NC); (iii) and, finally, a uniform description of the set FC/MC/NC in the similarity framework. The planar case, for which analytical solutions are available, allows a detailed illustration of the answers here advanced to the above issues. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mixed convection; Boussinesq approximation; Similarity; Buoyancy forces; Entropy production; Reverse flow. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401865 |
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| Nettesheim,Felipe Cito; Menezes,Luis Fernando Tavares de; Carvalho,Daniel Costa de; Conde,Marilena Menezes Silva; Somner,Genise Vieira; Rodrigues,Guilherme de Assis; Araujo,Dorothy Sue Dunn de. |
| This study describes the tree and shrub component of the Atlantic Forest on the slopes of Marambaia Island, RJ. It further evaluates which species are found at threatened species lists and the similarity that the studied forest component has with other nearby locations with similar vegetation. Data gathering relied on the joint effort of arbitrary walks and sampling units known as Transect. The same sampling criterion was applied at both approaches (DBH greater than or equal to 5 cm). A similarity analysis, followed by a Cluster analysis, was used to compare the studied vegetation component. Similarity calculations were based in the Bray-Curtis coefficient. We detected a total of 235 species. These are divided in 134 genera and 52 families. The richest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dense ombrophilous forest; Floristic; Species richness; Similarity; Phytogeography. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000300021 |
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| Bolzan,Ana Maria Rigon; Saccol,Suélen Alves; Santos,Tiago Gomes dos. |
| Grassy biomes occupy about 20% of the earth's surface, and are characteristic of northern Australia, Africa and South America, being biodiversity in these environments poorly understood. The Área de Proteção Ambiental (APA) do Ibirapuitã includes areas with the best-preserved grassland areas in the Pampa biome in Rio Grande do Sul state, Brazil. This study aimed to determine anuran species richness, abundance, constancy of occurrence, and reproductive modes, and to compare the taxonomic composition in the APA with other localities within the grassland areas of the southernmost of South America. We collected frogs from September to November 2012 and in November 2013 by sampling of reproductive sites. We also examined specimens deposited in herpetological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anuran communities; Native grasslands; Tadpoles; Reproductive modes; Similarity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000200302 |
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| Santos,Karin dos; Kinoshita,Luiza Sumiko; Rezende,Andréia Alves. |
| In this study we evaluated floristic composition patterns of communities of climbers within ten inventories carried out in semideciduous forest fragments of southeastern Brazil. One of the inventories is original, being carried out for the present study in Ribeirão Cachoeira forest, Campinas, São Paulo State, Southeastern Brazil. This inventory was then pooled together to other nine climbers' inventories made in other forests of Southeastern Brazil to form a data base, which was examined regarding species richness, similarity, species distribution and climbing methods. The total number of species obtained was 355, belonging to 145 genera and 43 families. The ten most diverse families Bignoniaceae (45 species), Fabaceae (42), Malpighiaceae (36), Asteraceae... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lianas; Climbing mechanism; Floristic; Similarity; NMS. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000400018 |
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| Fabiano,Telma Luciana Trovó; Ávila,Bruna Helena Pinheiro de; Dias,Cleusa Cascaes; Maluta,Renato Pariz; Ávila,Fernando Antonio de. |
| One hundred and forty-three samples from human hands and hospital beds were collected at a teaching hospital in the city of Ribeirão Preto/SP by swabs, and placed in BHI broth. Following a 24 h incubation period at 37ºC, they were seeded on Petri dishes containing Agar "Staphylococcus Medium 110". Colonies typical of the genus Staphylococcus were collected and stored at 4ºC until tested for catalase, mannitol, hemolysis, DNAse and coagulase. Strains were analyzed by RAPD-PCR to verify their similarity, and tested for sensitivity to ten different antibiotics. From the ninety-two isolated strains, 67 (72,8%) were coagulase- negative and 25 (27,2%) coagulase-positive. Similarity analysis showed a great heterogeneity among strains, but some presented 100%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Similarity; RAPD-PCR; Multiresistance. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000400010 |
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| Lopes,Jader Silva; Rorato,Paulo Roberto Nogara; Weber,Tomás; Araújo,Ronyere Olegário de; Everling,Dionéia Magda; Bresolin,Tiago; Dornelles,Mariana de Almeida; Breda,Fernanda Cristina. |
| The objective of this study was to evaluate the genetic divergence among Nellore breed animals raised in 45 farms in the Southern Region of Brazil. The characteristic studied was weaning weight adjusted to 205 days of life (P205), from 10,874 animals sired by 425 bulls and 7,629 cows, collected between 1976 and 2001, and distributed in the states of Rio Grande do Sul (1,499), Santa Catarina (2,332) and Paraná (7,043). The animals were distributed by cluster analysis in eight genetic divergent groups, enabling this technique to be applied to organize the matings in order to obtain heterotic effect. The herd/farm groups were formed through the hierarchical Ward method, using the direct (VGD) and maternal (VGM) breeding values predicted by the REML method.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cluster analysis; Genetic diversity; Multivariate analysis; Similarity; Ward hierarchical method. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013000500020 |
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| Registros recuperados: 34 | |
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