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| Registros recuperados: 44 | |
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| Scheffer-Basso, Simone Meredith; Priori, Bruna Carla. |
| abstract: The effect of the aluminum in root has been evaluated by linear and weight measurements, but remains to be understood about the influence of this element on branching configuration of the root system. This study had the objective to assess the aluminum toxicity in roots of 21-day-old seedlings of three forage legumes, Adesmia latifolia, Trifolium repens and T. pratense (Fabaceae), by topological analysis. The legumes were grown in Oxisol treated or not with dolomite lime, which resulted in two Al saturation and pH: (a) Al= 0 %, pH= 6.2; (b) Al= 16 %, pH= 4.8. Number of first-order roots, external links (magnitude), total links in the longest unique path (altitude), total links in the primary root (altitude of primary root), total exterior path... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.00.00.00-4 alumínio biometria raízes morfologia topologia Agronomia Adesmia; Altitude; Lotus; Magnitude; Path length; Trifolium. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18362 |
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| Siqueira,Carla C; Vrcibradic,Davor; Dorigo,Thiago A; Rocha,Carlos F. D. |
| The anurofauna inhabiting higher montane Atlantic forest areas in southeastern Brazil, which often attain heights of more than 2000 m, is still insufficiently known. In this study, we present data on anuran species composition and abundances in two high-altitude (i.e. > 1000 m) sites within the Parque Estadual dos Três Picos (PETP), in the state of Rio de Janeiro. Field surveys were done at altitudes between 1100 and 1900 m above sea level. We recorded 35 species during our study, adding 22 records to the set of anuran species previously known to occur within the PETP. The stability of the species accumulation curve, as well as the richness estimations, showed that the sampling methodology employed and the total sampling effort were appropriate to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Altitude; Amphibian; Community; Serra dos Órgãos mountains; Species richness. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000400007 |
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| Boldrini,Ilsi Iob; Miotto,Silvia T. S; Longhi-Wagner,Hilda M; Pillar,Valério De P; Marzall,Katia. |
| Estudou-se a variação da composição florística da vegetação campestre e suas relações com altitude e exposição no Morro da Polícia, de origem granítica, em Porto Alegre, Rio Grande do Sul, a 30ºS e 51 ºW. O levantamento foi realizado de novembro de 1992 a novembro de 1994. A presença e freqüência de espécies foi avaliada usando o método de pontos sobre transecções em 19 unidades de vegetação, as quais foram delimitadas com base na exposição da encosta (N, S, L, O) e altitude (160 a 280m). Os dados foram submetidos a análise multivariada de agrupamentos e ordenação. Nas transecções foram observadas 189 espécies, sendo Poaceae, Asteraceae e Apiaceae as famílias mais freqüentes e Trachypogon montufari e Schizachyrium tenerum as espécies dominantes. A análise... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Altitude; Análise multivariada; Exposição solar; Fitossociologia; Vegetação campestre. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33061998000100007 |
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| Costa,Luciana M.; Bergallo,Helena G.; Luz,Júlia L.; Esbérard,Carlos E. L.. |
| ABSTRACT We analyzed the bat assemblages found in protected areas in the state of Rio de Janeiro, Brazil, which is the best-sampled region of the Atlantic Forest. We selected 24 strict nature reserves and nine sustainable-use protected areas. We used data from inventories and complemented with data from the literature. We compared strict and sustainable-use protected areas, and tested whether the bat assemblages varied between habitat types. We tested the effect of geographic distance on the dissimilarity between bat assemblages, as well as the relationship between species composition and the size, mean altitude of the protected area, and capture effort. We compiled a total of 34,443 capture records, involving 67 species. Three species were captured only... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Altitude; Atlantic Forest; Chiroptera; Geographic distance; Types of habitat. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212020000100228 |
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| Moreno,Angel; Espinoza-Navarro,Omar. |
| The World Health Organization considers cigarette smoke as a major risk factor and causal agent of chronic obstructive pulmonary disease (COPD); however, smoke from biomass in poorly ventilated environments may be the major causative agent in developing countries. There is little epidemiological evidence of COPD in relation to the use of biomass fuels and altitude of the place of residence, and there is no record of the morphological and physiological characteristics of patients with COPD living at different altitudes. The objective of this research was to compare a) morphological characteristics: weight, height and body mass index (BMI) and b) physiological responses: spirometric record, heart rate, oxygen saturation and hemoglobin concentration in a... |
| Tipo: Journal article |
Palavras-chave: COPD; Altitude; Anthropometry; Elderly men; Chile. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200044 |
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| Gasperi,Diego De; Silveira,Eduardo Almeida da; Silva,Diego Rafael Palma da; Pereira,Roberta Carneiro da Fontoura; Portela,Luiz Osório Cruz; Brass,Karin Erica; De La Corte,Flávio Desessards. |
| Os níveis séricos de cortisol, resposta glicêmica e secreção de insulina foram avaliados em equinos não exercitados submetidos a sessões de hipóxia normobárica. Cavalos adultos sadios (n=8) foram selecionados após exame físico e submetidos ao teste de tolerância à glicose intravenosa (0,5g kg-1) (TTGIV). Amostras de sangue (n=11) foram coletadas entre 0 e 180 minutos após a administração de glicose para avaliar a resposta glicêmica e a secreção de insulina. Os animais foram então expostos a sessões de uma hora de hipóxia duas vezes ao dia, totalizando 43 sessões, com concentração decrescente de O2 de 17 a 12%. A frequência cardíaca e as amostras sanguíneas para a determinação do cortisol sérico foram coletadas antes e a cada 15 minutos durante as sessões... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cavalos; Hipóxia intermitente; Glicemia; Estresse; Altitude. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000300016 |
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| Tessmer,Magda Andréia; Antoniolli,Lucimara Rogéria; Appezzato-da-Glória,Beatriz. |
| This study aimed to analyze the cuticle thickness and pattern of epicuticular wax deposition in 'Gala' and 'Galaxy' apple cultivars (Malus domestica Borkh,) from three Brazilian producing areas: Vacaria (RS), Fraiburgo (SC) and São Joaquim (SC) with altitudes of 971, 1,048 and 1,353m, respectively. Harvested fruit were kept under two storage conditions: regular atmosphere (RA) (0 ºC and 90% RH) and controlled atmosphere (CA) (1.5% O2, 2.5% CO2, 0ºC and 90% RH). Cuticle thickness measurements were made using LM and the deposition pattern of epicuticular wax observed with a SEM. Altitude among the apple producing areas was not a factor in deposition pattern of waxes between the cultivars but at higher altitudes, the cuticle was thicker in both the cultivars.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malus domestica Borkh; Altitude; Cold storage; Controlled atmosphere; Light microscope. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000500010 |
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| Gonzaga,Anne Priscila Dias; Oliveira Filho,Ary Teixeira de; Machado,Evandro Luiz Mendonça; Hargreaves,Peter; Machado,José Nivaldo de Menezes. |
| O presente estudo descreve a composição de espécies e estrutura fisionômica do componente arbóreo de uma área de Floresta Estacional Semidecídua Inferomontana/Altomontana situada na serra de São José, Tiradentes, Minas Gerais, Brasil. São feitas comparações florísticas e estruturais com outras 23 áreas de floresta da região do Alto Rio Grande, utilizando análise de correspondência canônica e discriminando as relações com variáveis ambientais e espaciais. As análises florísticas indicaram que, apesar de seu caráter de transição entre florestas inferomontanas e altomontanas, a flora arbórea da serra de São José tem laços mais fortes com as primeiras. As variações florísticas e estruturais entre as 24 florestas se relacionaram significativamente com a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Altitude; Análise multivariada; Clima; Geoestatística; Floresta semidecídua; Solos. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062008000200018 |
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| Lens, F.; Luteyn, J.L.; Smets, E.; Jansen, S.. |
| The ecological wood anatomy of 128 vaccinioid wood samples (including 115 species, 35 genera), collected between 39°S and 60°N latitude and 10 m to 3400 m altitude is studied. Several wood anatomical features within the subfamily, viz. tangential vessel diameter, average length of tracheary elements, height of multiseriate rays, and presence of prismatic crystals are negatively correlated with increasing latitude, while vessel density and helical thickenings show a positive correlation with increasing latitude. Similar latitudinal trends are found within the genus Vaccinium (31 species studied). The correlation between various wood anatomical features and latitude is surprisingly high despite the fact that most tropical species grow in montane regions,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Altitude; Ecological and functional wood anatomy; Ericaceae; Latitude; Vaccinioideae; Vaccinium; 42.58. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/424624 |
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| Fávaro,Fernando de L.; Anjos,Luiz dos; Lopes,Edson V.; Mendonça,Luciana B.; Volpato,Graziele H.. |
| Variações na riqueza e abundância de Furnariidae florestais foram analisadas ao longo do gradiente altitudinal/latitudinal da bacia do rio Tibagi (BRT), Paraná, Brasil. A Floresta Ombrófila Mista (1060 m a.n.m.) é a formação dominante no sul da BRT, enquanto que a Floresta Estacional Semidecidual (298 m a.n.m.), ocorre no norte. O número total de espécies obtidas na BRT foi 14. A riqueza e a abundância de Furnariidae foram maiores no sul (12 espécies, IPA = 2,01) do que no norte (cinco espécies, IPA = 0,45) da BRT. As similaridades também foram altas entre o sul e o centro da BRT. A estrutura da comunidade de Furnariidae também apresentou correlação positiva entre o sul e o centro da BRT (coeficiente de correlação por postos de Spearman; r s = 0,96, r s =... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Altitude; Floresta estacional; Semidecidual; Floresta ombrófila mista; Latitude. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000100020 |
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| Espinoza-Navarro,O; Diaz,J; Rodríguez,H; Moreno,A. |
| The aim of the study was to compare anthropometric and physiological patterns in a sample of 522 Aymara and non-Aymara individuals from Parinacota, Chile (3.700m). After signing voluntary informed consent forms, the residents were separated in two age groups. Groups A: 18 to 35 years, and Group B: 36 to 65 years, by sex and Aymara and non-Aymara ethnicity. The results of this study determined that anthropometric anteroposterior diameter (DAP) are higher in Aymara population. Biacromial diameter (DBA) is significantly lower in the Aymara population. Aymara males between 18 and 35 years are smaller than non-Aymara males. Aymara women had significantly lower heart rates. The respiratory rate is significantly lower in Aymara males and females from 18 to 35... |
| Tipo: Journal article |
Palavras-chave: Aymara; Altitude; Anthropometry; Physiological patterns. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000100005 |
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| Espinoza-Navarro,O; Graú,S. |
| High altitude hypoxia is a stress that triggers several adaptive mechanisms, one of which is how the brain responds to lack of oxygen. The aim of this study was to determine changes in morphological and physiological patterns and in the attention capacity and perception in student populations from the highlands and from a sea level location. Eighty students, aged 14 to 16 years old, both sexes, from the Municipalities of Putre (3500 m.a.s.l.) and Arica (2 m.a.s.l.) participated in this study, with each group composed of 20 women and 20 men. After informed consent was obtained and with the students acceptance, parameters such as weight, height, BMI, heart rate, systolic and diastolic blood pressures were obtained. Subsequently, a psychometric test of... |
| Tipo: Journal article |
Palavras-chave: Altitude; Andean highlands; Attentional capacity; Psychometrics; Chile. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000200036 |
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| Vega,Emil C.; Jara,Jorge C.. |
| Em duas zonas de latitudes similares e com diferentes altitudes, tais como Portoviejo (Região Costa) e Riobamba (Região Andina) no Equador, procurou-se ajustar os modelos de Holdridge (Ho) e Hargreaves-Samani (H-S) e com três modificações (modelos com constantes C HO e KE e KT Diário, Mensal e Anual, respectivamente) com o propósito de estimar a evapotranspiração de referência (ETo), em diferentes níveis das médias móveis do tempo, para o período de três dias. Uma vez ajustados os coeficientes C HO, KE e KT, estimou-se a ETo e foram validados os resultados mediante comparação com as mensurações da ETo, utilizando-se da evaporação do tanque Classe A com seu respectivo coeficiente (ETo Pan). Nos coeficientes C HO (Ho) e KE (H-S), o melhor desempenho foi... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Evapotranspiração de referência (ETo); Altitude; Temperatura; Déficit de pressão de vapor; Hargreaves-Samani. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162009000300006 |
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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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| Coelho,Marcel Serra; Carneiro,Marco Antônio Alves; Branco,Cristina; Borges,Rafael Augusto Xavier; Fernandes,Geraldo Wilson. |
| Gall-inducing insects are very specious in vegetations of southeastern Brazil. Our goal was describe the gall richness by characterizing their external forms and their patterns of occurrence on host plants. Samples were collected from Campos de Altitude at four regions of the Mantiqueira Range: 1) Parque Estadual da Serra do Brigadeiro, 2) Parque Nacional do Caparaó, 3) Parque Estadual do Ibitipoca, 4) Parque Nacional do Itatiaia. We found 93 gall species within 13 families, 30 genera and 50 host plant species. We recorded 38 gall species in Parque Estadual da Serra do Brigadeiro, 21 in Parque Nacional do Caparaó, 23 in Parque Estadual do Ibitipoca and 20 in Parque Nacional do Itatiaia. Asteraceae represented 33% of the species collected, followed by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodiversity; Biogeography; Herbivory; Host plant; Altitude. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400139 |
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| OSTOJIC,HRVOJ; MONGE-C,CARLOS; CIFUENTES,VERONICA. |
| Blood oxygen affinity and red blood cell properties were measured in three subspecies of genus Bufo: Bufo spinulosus limensis, collected at sea level and at an average day temperature of 20ºC; Bufo spinulosus trifolium, from 3100 m, average day temperature of 15ºC; and Bufo spinulosus flavolineatus, from 4100 m, average day temperature of 10ºC. Electrophoresis of the hemoglobin showed the same component in each of the three subspecies. At 20ºC the blood oxygen affinities (P50) showed small differences between Bufo spinulosus limensis and Bufo spinulosus trifolium, whereas the value for Bufo spinulosus flavolineatus was markedly lower. At 10ºC, the ambient temperature of Bufo spinulosus flavolineatus, the P50 was extremely low compared with the other two... |
| Tipo: Journal article |
Palavras-chave: Adaptations; Altitude; Amphibians; Bufo spinulosus limensis; Bufo spinulosus trifolium; Bufo spinulosus flavolineatus; Hemoglobin affinity; Hematocrits; Oxygen binding; Toads. |
| Ano: 2000 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602000000100007 |
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| Registros recuperados: 44 | |
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