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| Registros recuperados: 115 | |
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| FELFILI,JEANINE MARIA; SILVA JUNIOR,MANOEL CLAUDIO DA; DIAS,BENEDITO JOSÉ; REZENDE,ALBA VALÉRIA. |
| Stryphnodendron adstringens, conhecida como barbatimão, é uma espécie de distribuição geográfica ampla no bioma cerrado, ocorrendo desde o Pará, pelo planalto central, até Minas Gerais e São Paulo. Sua casca e frutos contêm tanino e apresentam propriedades medicinais. É uma espécie de baixa exigência nutricional e não acumuladora de alumínio. É hermafrodita e polinizada por pequenos insetos, especialmente abelhas. Está entre as principais espécies lenhosas encontradas na área de estudo. O objetivo deste estudo foi avaliar os eventos fenológicos desta espécie, numa área de cerrado sensu stricto na Fazenda Água Limpa (15°56'S e 47°46'W), durante cinco anos (1987-1991). Dez árvores foram selecionadas e observadas de 18/01/1987 até 07/11/1991 a intervalos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phenology; Savanna; Cerrado; Fire; Stryphnodendron adstringens; Brazil. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000100011 |
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| Kolb,Rosana Marta; Pilon,Natashi Aparecida Lima; Durigan,Giselda. |
| Few studies address the ecology of herbs of Cerrado grasslands, which are ecosystems where the long dry season, high temperatures, insolation, fire and invasive grasses greatly influencing germination and the establishment of plants. We assessed germination of 13 species of Poaceae from Cerrado grasslands under nursery conditions or in germination chambers, the latter with i) recently collected seeds and seeds after six months storage, ii) under constant and alternating temperatures, and iii) in the presence and absence of light. Germinability, mean germination time (MGT) and required light were quantified to elucidate factors involved in successful germination. Germinability was low for most grasses, probably because of low seed viability. For most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Grasslands; Poaceae; Savanna; Seed storage; Seed viability. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100087 |
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| Batalha,Marco Antônio; Mantovani,Waldir. |
| We studied a 1225 ha area, composed mainly of cerrado, in Santa Rita do Passa Quatro, São Paulo State, southeastern Brazil (21°36-38'S, 47°36-39'W). In three cerrado physiognomies (campo cerrado -- a wooded savanna, cerrado sensu stricto -- a woodland, and cerradão -- a tall woodland), we collected all vascular plants in reproductive stage, and identified them to species level. We found 360 species, representing 236 genera and 69 families. The richest families were: Asteraceae, Fabaceae, Poaceae, and Rubiaceae. The savanna physiognomies were richer than the forest one. The ratio between herbaceous and woody species was approximately 2:1. We analysed the whole flora and its two components separately, woody and herbaceous, comparing them with other disjunct... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Savanna; Physiognomy; Floristics; Woody/herbaceous ratio. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062001000300001 |
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| Monteiro, Maria Do Socorro; Ferreira, Edson Chaves. |
| ESTE TRABALHO OBJETIVOU ANALISAR O PROCESSO DE OCUPAÇÃO E USO DO CERRADO PIAUIENSE, PARTICULARMENTE, DE PALMEIRA DO PIAUÍ RELATIVO À FORMAÇÃO E DINÂMICA DO MERCADO DE TERRAS. A OCUPAÇÃO DO CERRADO BRASILEIRO, DEU-SE EM 1950, DIFERENCIANDO-SE ENTRE AS UNIDADES DA FEDERAÇÃO, EM DECORRÊNCIA DAS ESPECIFICIDADES INSTITUCIONAL, POLÍTICA, ECONÔMICA E NATURAL. NO CERRADO PIAUIENSE, O PRÓPRIO ESTADO DISPONIBILIZOU VIA COMDEPI, TERRAS A PREÇOS INSIGNIFICANTES A GRANDES PRODUTORES RURAIS DO PAÍS. EM PALMEIRA DO PIAUÍ, A OCUPAÇÃO INICIOU A PARTIR DE 1996, CENTRANDO-SE NA PRODUÇÃO DE SOJA. SEGUNDO O CARTÓRIO DE IMÓVEIS DO MUNICÍPIO, ATÉ JUNHO DE 2007, FORAM EFETIVADAS 84 NEGOCIAÇÕES COM TERRAS, DAS QUAIS APENAS 08 CORRESPONDIAM A MAIS DE 50% DOS HECTARES NEGOCIADOS.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Cerrado; Cerrado piauiense; Mercado de terras; Savanna; The savanna of Piauí; Market for land; Land Economics/Use. |
| Ano: 2008 |
URL: http://purl.umn.edu/109810 |
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| SILVA,PAULO R.D. DA; STEFENON,VALDIR M.. |
| The plant species occurring in the savanna region of the Cerrado biome in Brazil present typical morphological and physiological adaptations to a dry climate with seasonal occurrence of wildfires. In this study, the histological features of the root system, the main sites of synthesis and storage of starch and the initial phases of the bud development were characterized inJacaranda ulei. The anatomical features observed in the root system of J. ulei are related to the needs of the species to survive in the Cerrado. The histochemical analyses demonstrated high synthesis of glucose and glycoprotein after the third day of in vitro culture, in the proximal cells of the cortical parenchyma of the exoderm. Meristematic primordia were observed in the ninth day... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado Biome; Histology; Savanna; Wildfire. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000100271 |
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| Abreu,Mariângela Fernandes; Pinto,José Roberto Rodrigues; Maracahipes,Leandro; Gomes,Letícia; Oliveira,Edmar Almeida de; Marimon,Beatriz Schwantes; Marimon Junior,Ben Hur; Farias,Josenilton de; Lenza,Eddie. |
| The present study analyzed the influence of edaphic variables on the floristic compositions and structures of the arboreal and shrub vegetation of typical cerrado (TC) and rocky outcrop cerrado (RC) communities in the Serra Negra mountain range in Piranhas Municipality, Goiás State, Brazil. Ten 20×50m plots were established in each community, and all individuals with minimum diameters ³5cm measured at 30cm above soil level were sampled. Composite soil samples were collected at 0-20cm depths in each plot for physical and chemical analyses. The proportions of above-ground rock cover work also estimated in each RC plot. A total of 2,009 individuals (83 species, 69 genera, and 34 families) were recorded. Qualea parviflora was the only species consistently... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Rocky outcrops; Savanna; Soils. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042012000300005 |
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| Registros recuperados: 115 | |
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