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| Registros recuperados: 115 | |
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| Railsback, L. Bruce; Brook, George A.; Liang, Fuyuan; Marais, Eugene; Cheng, Hai; Edwards, R. Lawrence. |
| Stalagmite Orum-1 from a cave near Orumana in northwestern Namibia provides a multi-proxy record of regional drying with increasing global-scale warmth over the last 47 kyr, in a region with few long well-dated location specific paleoclimate records. Data from Stalagmite Orum-1 include carbon and oxygen stable isotope ratios, proportions of aragonite and calcite, pronouncedly differing petrographic fabrics, positions of layer-bounding surfaces, variation in layer-specific width, and changes in layer thickness, all of which combine to support change from wetter to drier conditions. Combined with fourteen U-Th ages, they suggest that climate was wetter in northwestern Namibia during globally cold MIS 3 than it is today, and with more grass than is present... |
| Tipo: Text |
Palavras-chave: Namibia; Paleoclimate; Pleistocene; Holocene; Savanna; Stalagmite. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00421/53213/54862.pdf |
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| Sampaio,Daniela; Castro Souza,Vinicius. |
| ABSTRACT The genus Sloanea is comprised of 150 species, of which about 50 occur in Brazil among several vegetation types but mainly the Amazon and Atlantic forests. The present work provides a synopsis of the Neotropical species of Sloanea in the extra-Amazonian region based on a recent revision of the genus. In general, morphologically Sloanea comprises large trees endowed with buttressed roots; simple leaves; flowers with sepals that may or may not cover the reproductive organs in pre-anthesis phases; stamens with the connective prolonged into an awn that is acuminate, acute or aristate and fruit covered with rigid or flexible bristles or sometimes unarmed. This synopsis describes 17 species, and provides an identification key, illustrations and comments... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Brazil; Diversity; Savanna; Taxonomy. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000300371 |
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| VARGAS, M. A. T.; PERES, J. R. R.; SUHET, A. R.. |
| A soja é considerada a maior fonte de proteínas para a alimentação animal e humana e seus subprodutos oferecem grande diversidade de emprego na indústria química. A expansão dessa cultura no Brasil acentou-se a partir de 1973, quando ocorreu uma grande elevação de seu preço no mercado internacional. A sua participação na pauta de exploração tem sido muito expressiva. Em 1979 contribuiu com cerca de 2 bilhões de dólares em divisas. Ocupa atualmente cerca de 20% de área cultivada no País. Nos cerrados, a partir de uma produção pouco expressiva, em 1975, foram colhidos na safra 1979/80 cerca de 1,9 milhão de toneladas de grãos de soja, equivalendo a 12,6% da produção do País. Essa produção representou um aumento de 66% em relação a safra anterior. Como o... |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: Adubação nitrogenada; Brasil; Cultivo; Fertilização; Fertilizer; Inoculation; Savanna; Soybean.; Adubação; Cerrado; Fertilizante Nitrogenado; Glycine Max; Grão; Inoculação; Nitrogênio; Produção; Rhizobium Japonicum; Solo.; Soja; Pennisetum; Inoculation methods; Nitrogen fertilizers; Nitrogen; Soil.. |
| Ano: 1982 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/547538 |
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| Lima,Janaina Reis Ferreira; Lima,Jucivaldo Dias; Lima,Soraia Dias; Silva,Raullyan Borja Lima; Andrade,Gilda Vasconcellos de. |
| Abstract Amphibian research has grown steadily in recent years in the Amazon region, especially in the Brazilian states of Amazonas, Pará, Rondônia, and Amapá, and neighboring areas of the Guiana Shield. Even so, few data are available for the Amazonian savannas of Brazil. To contribute to the understanding of the diversity of the amphibians of these savannas, we surveyed 15 temporary ponds, six located in open areas, seven on the edge of savanna forest, and two within the forest, in the savanna of the Rio Curiaú Environmental Protection Area (EPA) in Macapá, in the state of Amapá, northern Brazil. Sampling occurred from May 2013 to August 2014 during periods when the ponds contained water. Amphibians were sampled through visual and auditory surveys... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amphibians; Amazonian; Amapá; Savanna; Savanna forest; Species list. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000200301 |
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| Freitas,André V.L.; Barbosa,Eduardo P.; Zacca,Thamara; Marín,Mario Alejandro; Beirão,Marina V.; Silva,André R.M.; Casagrande,Mirna M.; Espeland,Marianne; Willmott,Keith R.. |
| Abstract A new genus, Nhambikuara Freitas, Barbosa & Zacca gen. nov., and species, Nhambikuara cerradensis Freitas, Barbosa & Zacca sp. nov., of the highly diverse Neotropical butterfly subtribe Euptychiina are described. Nhambikuara cerradensis sp. nov. is the type species for the genus, and Euptychia mima Butler, 1867 is also transferred to the new genus, as Nhambikuara mima (Butler, 1867) comb. nov., from the genus Zischkaia Forster, 1964. The taxonomy, phylogenetic relationships, geographic distribution and natural history of species of the genus are also discussed.http://zoobank.org/urn:lsid:zoobank.org:pub:41AD7568-3490-4F63-A019-32D5592A8C44 |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Paryphthimoides; Savanna; Splendeuptychia; Zischkaia. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262018000200148 |
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| FREITAS,CRISTIANE V.; OLIVEIRA,PAULO E.. |
| Copaifera langsdorffii Desf. é uma espécie da família Leguminosae, subfamília Caesalpinioideae, de ampla distribuição no Brasil. O estudo da biologia reprodutiva desta espécie foi realizado numa área de cerradão aberto para pastagem da Fazenda Capim Branco, Uberlândia, MG. A espécie floresce durante o período das chuvas e dispersa suas sementes na época seca. As flores são branco-esverdeadas, com cerca de 0,5 cm de diâmetro, fracamente zigomorfas e estão reunidas em inflorescência paniculada. Apresentam um forte odor adocicado e duram apenas um dia. A antese inicia-se por volta das 5:00 h. Os recursos oferecidos aos visitantes são pólen e néctar. Produzem pouco néctar (0,2 ml) com concentração média de 49% de equivalentes de sacarose. Os visitantes mais... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Savanna; Bee pollination; Self-sterility; Inbreeding depression. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002000300007 |
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| Lucindo,Anderson da Silva; Antunes,Alexsander Zamorano; Kanashiro,Marina Mitsue; Dias,Manoel Martins. |
| In the state of São Paulo, southeastern Brazil, the phytophysiognomy known as Cerrado takes less than 1% of its original cover. Thus, the establishment and management of protected areas are essential to save a significant sample of biodiversity of this environment in the region. The Santa Bárbara Ecological Station is one of the largest protected areas in São Paulo, and one of the few ones to cover a mosaic with most of the vegetation types of Cerrado. This article aims to increase the knowledge of avifauna in the reserve, showing new bird records and evaluating the association of species to their physiognomies. We carried out surveys from 2008 to 2013, which resulted in the record of 226 species, or 246 when in regard to Willis & Oniki’s works (1981,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Protected area; Management; Savanna. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000400203 |
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| Martins,Lucas Pereira; Araujo Junior,Elias da Costa; Martins,Ananda Regina Pereira; Colins,Mairla Santos; Almeida,Gabriela Cristina Fonseca; Azevedo,Gisele Garcia. |
| Abstract Species inventories are important tools to evaluate biodiversity losses and contribute to the conservation of endangered areas. The Amazon and Cerrado are the largest Brazilian biomes and represent some of the most threatened regions of the country. Due to its location between these biomes, the state of Maranhão, Northeast Brazil, possesses a great variety of habitats and a high local diversity. Nonetheless, few faunistic inventories of diversified groups have been performed in the state. In the specific case of butterflies, a well-known biological indicator, no inventories have been published in the past years. This study aimed to expand the knowledge on the composition of butterflies in Amazon and Cerrado remnants of Maranhão. Butterflies were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tropical forest; Diversity; Lepidoptera; Neotropical region; Savanna. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000300303 |
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| Silva,Daniela Mariano Lopes da; Ometto,Jean Pierre Henry Balbaud; Lobo,Gré de Araújo; Lima,Walter de Paula; Scaranello,Marcos Augusto; Mazzi,Edmar; Rocha,Humberto Ribeiro da. |
| Several studies in tropical watersheds have evaluated the impact of urbanization and agricultural practices on water quality. In Brazil, savannas (known regionally as Cerrados) represent 23% of the country's surface, representing an important share to the national primary growth product, especially due to intense agriculture. The purpose of this study is to present a comprehensive evaluation, on a yearly basis, of carbon, nitrogen and major ion fluxes in streams crossing areas under different land use (natural vegetation, sugar cane and eucalyptus) in a savanna region of SE Brazil. Eucalyptus and sugar cane alter the transport of the investigated elements in small watersheds. The highest concentration of all parameters (abiotic parameters, ions, dissolved... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Savanna; Nutrients; Watershed; Sugar cane; Eucalyptus. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400002 |
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| Brandão,Carlos Roberto F.; Silva,Rogério R.; Feitosa,Rodrigo M.. |
| Large-scale agricultural production in Brazil preferentially occupies plateaus reclaimed from areas originally covered by Cerrado (savanna). Depending on the region, a percentage of the pristine vegetation coverage must be preserved by law, resulting in the creation of fragmented legal Cerrado reserves. The geometry of these relatively small legal reserves creates new habitat edges and ecotones, whose effects on the invertebrate fauna are poorly understood. This study aimed to assess the effects of abrupt edges resulting from soy production on ground-dwelling ant assemblages in the Brazilian Cerrado. The study sites are located within the Amazon region, in the state of Maranhão, northern Brazil, but were covered by Cerrado on a relatively low plateau,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Consevation; Diversity; Legal reserves; Savanna; Soy production. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000300012 |
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| AQUINO, F. de G.; ALBUQUERQUE, L. B. de; ALONSO, A. M.; LIMA, J. E. F. W.; SOUSA, E. dos S. de. |
| A vegetação é parte importante no equilíbrio da Terra, pois permite manter a vida dos animais, a qualidade do solo e da água. Devido a sua importância, esta cartilha apresenta conceitos e técnicas para conservar e recuperar um tipo particular de vegetação, as matas de galeria, importantes para a preservação de rios que fazem parte das bacias hidrográficas no Cerrado. |
| Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) |
Palavras-chave: Mata de galeria; Restauração; Riparian vegetation; Gallery forest; Restoration; Enviroment; Savanna; Nature conservation; Ciliar vegetation.; Flora; Mata Ciliar; Meio Ambiente.. |
| Ano: 2012 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/920222 |
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| Registros recuperados: 115 | |
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