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| Registros recuperados: 22 | |
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| Catarino, L.; Martins, E.S.; Pinto Basto, M.F.; Diniz, M.A.. |
| A Checklist of Guinea-Bissau’s vascular flora is presented, based on the inventory of herbarium material and on recent collections. In addition to the name, we cite for each taxon the basionym and synonyms, the life form and habitat, as well as the chorology, Raunkiaer’s biological type, phenology and vernacular names if known. 1507 specific and infra-specific taxa were recorded, of which 1459 are autochthonous, belonging to 696 genera. This shows a higher diversity than the 1000 species estimated so far. In the autochthonous flora there are 22 species of Pteridophyta from 14 families; 1041 taxa of Dicotyledons from 107 families, and 396 taxa of Monocotyledons belonging to 33 families. Three taxa are probably endemic to the country. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Flora; Phytogeography; Ecology; Chorology; Vernacular names; Guinea-Bissau. |
| Ano: 2008 |
URL: http://www.repository.naturalis.nl/record/526088 |
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| MÁRQUEZ,EDJULY J.; FARIÑAS,MARIO R.; BRICEÑO,BENITO; RADA,FERMÍN J.. |
| In Venezuelan paramos grasses, after Asteraceae, are the second family in numerical importance. We studied their distribution in an altitudinal gradient located in Venezuela, Sierra de La Culata, between 2,500 and 4,200 m of altitude. Twenty one 32 m parallel line transects every 50 m were placed along the gradient, perpendicular to the main slope. Each line was divided into contiguous 50 x 50 cm sampling units. Grass species occurrence inside each sample unit was considered to determine their frequency in each line or altitude. The peak and altitudinal amplitude was determined through the weighted averaging method. A total of 47 grass species were found along the gradient. Agrostis was the best-represented genus in the gradient. Considering the... |
| Tipo: Journal article |
Palavras-chave: Altitudinal patterns; Phytogeography; Poaceae; South American Andes; Tropical high mountain. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000400008 |
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| Ribeiro,Tiago Maciel; Ivanauskas,Natália Macedo; Martins,Sebastião Venâncio; Polisel,Rodrigo Trassi; Santos,Rochelle Lima Ramos dos; Miranda Neto,Aurino. |
| The aim of this work was to evaluate the floristic composition, richness, and diversity of the upper and lower strata of a stretch of mixed rain forest near the city of Itaberá, in southeastern Brazil. We also investigated the differences between this conservation area and other stretches of mixed rain forest in southern and southeastern Brazil, as well as other nearby forest formations, in terms of their floristic relationships. For our survey of the upper stratum (diameter at breast height [DBH] > 15 cm), we established 50 permanent plots of 10 × 20 m. Within each of those plots, we designated five, randomly located, 1 × 1 m subplots, in order to survey the lower stratum (total height > 30 cm and DBH < 15 cm). In the upper stratum, we... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Araucaria angustifolia; Cluster analysis; Ecotone; Phytogeography; Phytosociology. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100010 |
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| LONGHI-WAGNER,HILDA M.; ZANIN,ANA. |
| No Brasil ocorrem 22 espécies de Stipa, com maior diversidade no Rio Grande do Sul, onde todas estão presentes, 12 destas atingindo Santa Catarina, sete o Paraná e apenas uma espécie, S. sellowiana Nees ex Trin. & Rupr., alcançando os campos de altitude da Serra da Mantiqueira, em Minas Gerais, limite norte de distribuição do gênero e da tribo Stipeae no Brasil. O trabalho apresenta uma análise da distribuição geográfica destas espécies, fornecendo mapas com os diferentes padrões de distribuição encontrados. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poaceae; Gramineae; Grasses; Stipa; Phytogeography. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041998000200009 |
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| Soares,Caio J. R. S.; Sampaio,Mauricio B.; Santos-Filho,Francisco S.; Martins,Fernando R.; Santos,Flavio A. M. dos. |
| ABSTRACT Patterns of species diversity are essential to understand community structure. We aimed to determine species diversity and patterns of beta diversity in different spatial scales. We sampled three thousand individuals between the coordinates 22°10'S to 22°16'S and 47°47'W to 48°00'W to assess species diversity in three spatial scales (maximum distances of 80 m, 1,400 m, and 12,000 m), using the point-centered-quarter method. We partitioned gamma diversity into alpha and beta components. Beta diversity was partitioned into dissimilarities produced by spatial species turnover and nestedness. The contribution of beta diversity to gamma diversity was greater than that of alpha diversity in all scales, although the patterns of species diversity were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beta diversity; Biogeography; Disturbance; Diversity partition; Local spatial scale; Nestedness; Phytogeography; Spatial species turnover. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100009 |
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| Iannuzzi,Roberto; Vieira,Carlos E. L.; Guerra-Sommer,Margot; Díaz-Martínez,Enrique; Grader,George W.. |
| Fossil plants belonging to the morphogenera Glossopteris, Pecopteris and Asterotheca were collected from the upper part of the Chutani Formation (Titicaca Group), near the town of San Pablo de Tiquina, on the southeastern shore of Lake Titicaca (northern Altiplano, Bolivia). This paper presents the first description of specimens of the morphogenus Glossopteris from Bolivia. The Bolivian specimens of Glossopteris consist of poorly-preserved impressions, although they present the diagnostic features of this morphogenus. They are fragments of leaves with secondary veins of taeniopterid-type, typical of glossopterids from Late Permian deposits of Gondwana. The only species of Pecopteris confirmed in the first part of this study, i.e. P. dolianitii Rösler and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Altiplano of Bolivia; Permian; Glossopteris; Phytogeography. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000100011 |
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| ARRUDA,DANIEL M.; FERREIRA-JUNIOR,WALNIR G.; DUQUE-BRASIL,REINALDO; SCHAEFER,CARLOS E.R.. |
| The Deciduous Complex that occurs in northern Minas Gerais State, Brazil, raises questions about the floristic affinities of these formations in relation to neighboring phytogeographical domains. Little is known about the identity of the seasonal forest formations that comprise this complex, or about its relationships to abiotic components, such as soils, topography and climate. This study aimed to recognize the patterns of floristic similarity of all studied fragments of dry forest of northern Minas Gerais with soil and climate attributes, based on the available database. Cluster analysis indicated the existence of two floristic groups that had clear associations with either the Koppen's BSh (semi-arid) or Aw (seasonal tropical) climates. Likewise, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climate; Deciduous seasonal forest; Ecotone; Phytogeography; Soil. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200623 |
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| Rocha,Pedro Luís B. da; Queiroz,Luciano P. de; Pirani,José Rubens. |
| One dune habitat in the semi-arid Caatinga Biome, rich in endemisms, is described based on plant species composition, woody plant density, mean height and phenology and a multivariate analysis of the micro-habitats generated by variables associated to plants and topography. The local flora is composed mainly by typically sand-dweller species of Caatinga, suggesting the existence of a phytogeographic unity related to the sandy areas in the Caatinga biome, which seems to be corroborated by faunal distribution. Moreover, some species are probably endemic from the dunes, a pattern also found in vertebrates. The plant distribution is patchy, there is no conspicuous herbaceous layer and almost 50% of the ground represents exposed sand. Phenology is not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Density; Endemic species; Phenology; Phytogeography; Semiarid. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042004000400013 |
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| Gröger,Andreas; Huber,Otto. |
| The Guayana Shield, located in north-eastern South America, consists of a highly complex and composite mosaic of landscape elements. Amongst these, inselbergs are very conspicuous, because of their peculiar shape and their unusual associated vegetation. Geologically, these rock outcrops are part of the underlying ancient igneous-metamorphic basement and occur mainly in the lowlands of the periphery of the shield. As azonal habitats, inselbergs harbour a highly specialized flora. The characteristic vegetation is composed of lithophytic and savanna-like plant communities, as well as low dry forests. As a whole, the vegetation of an inselberg may be interpreted as a mosaic of marginal habitats. Therefore a large number of taxa find suitable niches in a quite... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endemism; Flora; Guayana Shield; Inselberg; Phytogeography; Venezuela. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042007000400006 |
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| Gradstein, S.R.; Reenen, G.B.A. van; Griffin, D.. |
| Based on data from the ECOANDES project, a phytogeographical analysis has been made of the bryophyte flora along the wet, foggy western slope (1000-4500 m) and the drier eastern slope (500-4500 m) of the Colombian Central Cordillera at the ‘Parque de los Nevados’. Species richness increases with altitude to the upper montane forest, which holds the largest diversity. Liverworts outnumber mosses in the upper submontane and montane forests on the western slope, but elsewhere, in drier environments, their number is lower and falls to below that of mosses. Furthermore, it appears that at lower altitudes, below 3000 m, wide-ranging tropical species prevail whereas narrowranging tropical species (andean and endemic element) and species of temperate origin are... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Phytogeography; Species richness; Altitudinal zonation; Andes; Bryophytes. |
| Ano: 1988 |
URL: http://www.repository.naturalis.nl/record/535268 |
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| Kurtz,Bruno Coutinho; Gomes,Jorge Caruzo; Scarano,Fabio Rubio. |
| Swamp forests are associated with soils that are saturated or inundated because of a high water table. In Brazil, little is known about the plant ecology of such forests. In this paper, we aimed to describe the phytosociological structure of the tree layer of swamp forests in Restinga de Jurubatiba National Park, in the northern part of the state of Rio de Janeiro, and to evaluate the floristic similarities between these forests and some other possibly related types of vegetation formations in Brazil. The sampling included 84 species, within 62 genera and 34 families. The Shannon diversity index was 3.42, and the Shannon evenness index was 0.77. The forests studied showed an oligarchic structure; Tapirira guianensis, Calophyllum brasiliense and Protium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest biome; Jaccard similarity coefficient; Phytogeography; Phytosociology; Coastal sand plain. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000400002 |
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| Registros recuperados: 22 | |
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