Altitudinal Variation
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Fitossociologia de um brejo de altitude no semiárido brasileiro: variação das espécies dominantes ao longo do gradiente altitudinal
Resumo Neste estudo, objetivou-se caracterizar a composição e estrutura da comunidade arbórea da Serra dos Cavalos, em Pernambuco, buscando inferir sobre a influência do gradiente altitudinal na variação das espécies de maior Valor de Importância (VI). Para isto, foi realizado um estudo fitossociológico em que foram mensurados todos os indivíduos v
Ciênc. Florest.. Publicado em: 30/09/2019
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2. Floristic-functional variation of tree component along an altitudinal gradient in araucaria forest areas, in Southern Brazil
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 de
An. Acad. Bras. Ciênc.. Publicado em: 24/07/2017
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3. Genesis and Classification of Soils from Subtropical Mountain Regions of Southern Brazil
ABSTRACT Soils formed in high mountainous regions in southern Brazil are characterized by great accumulation of organic matter (OM) in the surface horizons and variation in the degree of development. We hypothesized that soil properties and genesis are influenced by the interaction of parent materials and climate factors, which differ depending on the locati
Rev. Bras. Ciênc. Solo. Publicado em: 03/11/2016
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4. Sandfly species diversity in association with human activities in the Kani tribe settlements of the Western Ghats, Thiruvananthapuram, Kerala, India
Sandfly prevalence in the Kani tribe settlements of Western Ghats in India was investigated. A total of 1,279 sandflies comprising 17 species was obtained. Sandfly abundance showed a negative correlation (r = -0.97, p = 0.003) with increase in altitudinal ranges from 0-1,000 m. When sandfly samples were grouped according to landscape characteristics of the l
Mem. Inst. Oswaldo Cruz. Publicado em: 31/03/2015
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5. Environmental parameters affecting the structure of leaf-litter frog (Amphibia: Anura) communities in tropical forests: a case study from an Atlantic Rainforest area in southeastern Brazil
Despite a recent increase of information on leaf litter frog communities from Atlantic rainforests, few studies have analyzed the relationship between environmental parameters and community structure of these animals. We analyzed the effects of some environmental factors on a leaf litter frog community at an Atlantic Rainforest area in southeastern Brazil. D
Zoologia (Curitiba). Publicado em: 2014-04
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6. Modelos de distribuição de espécies de vellozia (Velloziaceae) endêmicas da Cadeia do Espinhaço e o efeito amostral sobre os mapas preditivos
The effectiveness of conservation actions depends on the knowledge of the geographical distribution of species. However, this knowledge is far from being achieved for most species, especially those occurring in mountainous tropical environments, such as the rocky fields (campos rupestres) of the Espinhaço Range, characterized by forming islands of vegetatio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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7. Height-diameter relationships of tropical Atlantic moist forest trees in southeastern Brazil
Site-specific height-diameter models may be used to improve biomass estimates for forest inventories where only diameter at breast height (DBH) measurements are available. In this study, we fit height-diameter models for vegetation types of a tropical Atlantic forest using field measurements of height across plots along an altitudinal gradient. To fit height
Scientia Agricola. Publicado em: 2012-02
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8. Variação geográfica de Hylaeamys yunganus (Thomas, 1902) na América do Sul (Rodentia: Sigmodontinae) / Geographic variation and phylogeography of Hylaeamys yunganus (Thomas, 1902) (Rodentia: Sigmodontinae)
Hylaeamys yunganus is a rodent of the Oryzomyini tribe presenting samples distributed through the Amazon rainforests and occupies a wide altitudinal gradient, which extends from sea level up to ca. 2,000m. Information available in the literature suggests that populations of H. yunganus from Venezuela, Colombia, Ecuador, Peru and western Brazil have large bod
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/09/2011
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9. Variações altitudinais na diversidade e composição em espécies de vespas e abelhas (Hymenoptera: Aculeata)
Distribution patterns of insects along elevational gradients have been described for many tropical mountains. According to the hypothesis of elevational gradient, species richness and abundance of species tend to decrease in higher altitudes. Aculeata is considered a monophyletic lineage of Hymenoptera order. They are important pollinators, but there are few
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2011
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10. Sub-regiões fitogeográficas da floresta atlântica entre as bacias dos rios São Francisco e Uruguai baseadas na análise dos padrões de distribuição espacial da flora arbórea e do clima / Phytogeographic subregions of the Atlantic Forests between São Francisco and Uruguay River basins based on the analysis of spatial distribution patterns of the tree flora and climate
The spatial variation in the composition of the tree flora of some Atlantic forest areas distributed in the East Atlantic basins, Southeastern and Southern Brazil, extended to Paraguay and Argentina, was investigated under four main aspects: (1) to evaluate the level of floristic differentiation of tropical and subtropical forests along their latitudinal, al
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2011
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11. Malaria vector species in Colombia: a review
Here we present a comprehensive review of the literature on the vectorial importance of the major Anopheles malaria vectors in Colombia. We provide basic information on the geographical distribution, altitudinal range, immature habitats, adult behaviour, feeding preferences and anthropophily, endophily and infectivity rates. We additionally review informatio
Memórias do Instituto Oswaldo Cruz. Publicado em: 2011-08
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12. Chromosomal inversion polymorphism in Drosophila mediopunctata : seasonal, altitudinal, and latitudinal variation
The most polymorphic chromosome for inversions in Drosophila mediopunctata is the chromosome II, where 17 inversions have been found, eight of which occurring in the distal region and nine in the proximal region. We present an analysis of the chromosome II inversion polymorphism with respect to seasonal, altitudinal and latitudinal variation. In D. mediopunc
Publicado em: 2010