|
|
|
| Registros recuperados: 239 | |
|
| |
|
| |
|
|
| SENNA,MÔNICA C.A.; COSTA,MARCOS H.; DAVIDSON,ERIC A.; NOBRE,CARLOS A.. |
| Amazon tropical forests are being replaced by pasturelands and croplands, but they sometimes revert to regrowth forest when abandoned after a period of agricultural use. Research suggests that this secondary regrowth is limited by climate and nutrient availability and, using a coupled biosphere-atmosphere model, we investigated patterns in the regrowth of the Amazon rainforest after a full deforestation event, considering different types of nutrient stress. We found that, over a 50 year regrowth period, the reduction of precipitation caused by large-scale deforestation was not sufficient to prevent secondary forest regrowth, but this decrease in precipitation combined with nutrient limitation, due to logging and frequent fires, did indeed prevent forest... |
|
Palavras-chave: Amazon; Climate; Deforestation; Ecosystem model; Net primary production; Savannization. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200621 |
| |
|
| |
|
|
| Pastana,Murilo N. L.; Dagosta,Fernando C. P.. |
| Moenkhausia rubra, new species, is described from the upper rio Juruena, rio Tapajós basin, Mato Grosso, Brazil. The new species is distinguished from its congeners, except M. hemigrammoidesand M. nigromarginata, by the dark pigmentation on the anteriormost rays of both dorsal and anal fins. Moenkhausia rubrais distinguished from the aforementioned species by the number of branched anal-fin rays 17-20 (vs. 20-25), presence of a dark blotch on the caudal peduncle extending to middle caudal-fin rays, absence of longitudinal black zigzag stripes between longitudinal rows of scales on body, and other details of coloration. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Moenkhausia nigromarginata; Neotropical fishes; Ostariophysi; Tetra. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000200389 |
| |
|
|
| ABREU,NATÁLIA DO COUTO; BARBOSA,SUZANA MARQUES; GURGEL,ELY SIMONE CAJUEIRO; CARVALHO,WENDELL VILHENA DE. |
| ABSTRACT Garcinia madruno (Kunth) Hammel is a neotropical tree that naturally occurs in terra firme forests and is important as a source of income and medicine for Amazonian populations. This study describes and compares the morphoanatomical responses of plants under conditions of stress and normoxia. Young plants of Garcinia madruno were subjected to two water regimes: daily controlled irrigation and waterlogged for 84 days. Hypertrophic lenticels, adventitious roots and anatomical characteristics of the roots and leaves were evaluated on days 0, 21, 42, 63 and 84. There were no changes in leaf structure, but cracks and hypertrophic lenticels appeared on the stems, there was an increase in blackness of the roots and the plants formed adventitious roots to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Bacurizinho; Stress; Fruit; Histochemistry. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000500201 |
| |
|
|
| Torreias,Sharlene Roberta da Silva; Ferreira-Keppler,Ruth Leila; Godoy,Bruno Spacek; Hamada,Neusa. |
| Mosquitoes in the family Culicidae develop their immature forms in different environments depending on various circumstances. This study represents the first contribution to the ecological knowledge of culicids living in the bromeliad G. brasiliensis. The objectives of the study were to compare the Culicidae fauna of bromeliads in two seasonal periods, analyzing their abundance, richness and the influence of pH, conductivity and water volume, on the populations. Sampling was done at Reserva Adolpho Ducke, Manaus, Amazonas, Brazil between 2003 and 2005. Six samplings were done in the rainy season and six in the dry season. On each sampling day, six terrestrial and six epiphytic bromeliads, totaling 144 sampling units, were retrieved. A total of 444 immature... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Aquatic insects; Culex (Microculex); Phytotelmata; Wyeomyia. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000400013 |
| |
|
| |
|
|
| Perz, Stephen G.; Valho, Lucas Araujo Car; Passos, Veronica; Rocha, Karla; Silveira, Marcos. |
| Propomos aumentar o conhecimento sobre os impactos da construção e melhoramento em obras de infra-estrutura, nesse caso em particular das estradas, e nas relações entre as pessoas e a floresta. Este tema multifacetado será abordado por um complexo sistema de interações, com ênfase na dinâmica das redes ecológicas, sócio-econômicas e institucionais. Integraremos estes dados de pontos multi-temporais e espacialmente explícitos no sentido de compilar um banco de dados que promova um melhor entendimento da complexa dinâmica das mudanças trazidas por melhoria na infra-estrutura viária. Esta base de dados integrada permitirá modelagem espaço-temporal para comprovar várias expectativas sobre sistemas complexos, como por exemplo, impactos decorrentes de nova... |
| Tipo: Presentation |
Palavras-chave: Infra-estrutura; Resiliencia; Conectividade; Brasil; Amazonia; Infrastructure; Resilience; Connectivity; Brazil; Amazon; Community/Rural/Urban Development. |
| Ano: 2008 |
URL: http://purl.umn.edu/119004 |
| |
|
| |
|
|
| Monteiro,Thamillys Rayssa Marques; Rocha,Katarine de Souza; Mesquita,Gleiciane Schupp de Sena; Castro,Danniel Carvalho de; Miranda,Stefânia Araújo; Paz,Giselle Souza da; Langoni,Hélio; Moraes,Carla Cristina Guimarães de. |
| ABSTRACT: Although, serological studies for leptospirosis in iguanas have already been performed, there is no report in the Amazon region. Therefore, the present study aimed to investigate the presence of anti-Leptospira sp. in free living Iguanas-verdes (Iguana iguana) of Mangal das Garças Park, metropolitan region of Belém, Pará, Northern region of Brazil. Twenty-nine blood samples of Iguana-verde (I. iguana) were collected from Mangal das Garças Park. For the serological diagnosis of Leptospira sp. it was employed microscopic agglutination test (MAT) with 25 live antigens of Leptospira sp. as antigens. It was observed that all samples were non-reactive, suggesting no exposure to the agent. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reptiles; Leptospirosis; Wild animals; Amazon. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900452 |
| |
|
| |
|
|
| Gonçalves,Alessandra Q.; Bóia,Márcio N.; Coura,José R.; Pinto,Roberto M.. |
| Four nematodes and one cestode species from three Brazilian agoutis - two Dasyprocta fuliginosa Wagler, 1832 and one Dasyprocta leporina (Linnaeus, 1758) - and six pacas - Agouti paca (Linnaeus, 1766) - captured in tributaries rivers in the middle and high Rio Negro microregion, State of Amazonas, Brazil, were studied. The nematodes Physaloptera torresi (Travassos, 1920) Ortlepp, 1922, Physocephalus mediospiralis (Molin, 1859) Hall, 1916 and the cestode Raillietina (R.) trinitatae (Cameron & Reesal, 1951) Baer & Sandars, 1956 are reported from the State of Amazonas for the first time. The studied helminths (the nematodes P. torresi, P. mediospiralis, Trichuris gracilis (Rud., 1819) Hall, 1916, Helminthoxys urichi (Cameron & Reesal,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon; Cestodes; Mammals; Nematodes; Rain forest. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000300016 |
| |
|
| |
|
|
| BRANDÃO,Marcus Vinicius; SEBASTIÃO,Harley; KUNIY,Adriana Akemi; CAVALIERI,Soraya; GODOY,Leandro Perez. |
| ABSTRACT Monodelphis glirina is endemic to the Amazon and its life habits and natural history are poorly known. Data on the species were collected in northern Mato Grosso, Brazil, including observations on its behavior and simpatry with congeners. During 10 expeditions and with an effort of 3,680 buckets-day, 29 M. glirina, three M. saci and one M. emiliae individuals were captured. Adults accounted for 82.8% of M. glirina captures, with a sex ratio of three males for each female. Capture of young and lactating females was seasonal, as both were captured only in the rainy season. We observed three events of M. glirina preying on rodents in pitfall traps, all with the same feeding behavior. We also report an individual climbing a tree at night, including a... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Amazon; Biology; Mato Grosso; Amazonian red-sided opossum; Monodelphis saci; Monodelphis emiliae. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000400309 |
| |
|
|
| Siviero, Amauri; Abreu, Lucimar Santiago; Mendes, Roberval; Gomes, Francisco Carlos Rocha. |
| O crescimento na produção de alimentos agroecológicos no Brasil e no mundo tem sido provocado por fatores chaves como, demanda dos consumidores urbanos e a crescente consciência da sociedade sobre os problemas ambientais decorrentes do uso inadequado dos recursos naturais, e em especial pelas preocupações dos indivíduos com a saúde. A tendência atual para o produto agroecológico em termos de mercado é de ampliar as vendas e a distribuição deixando de atender somente o mercado de nicho direcionando a produção para diversos mercados. Atualmente os produtos agroecológicos podem ser encontrados tanto em lojas secundárias, feiras livres, supermercados como até podem ser recebidos em cestas a domicilio, ou seja, as vendas podem atingir o mercado de massa. O... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Agroecologia; Consumidores; Venda direta; Amazônia; Agriculture organic; Sustainable consumption; Selling direct; Amazon; Farm Management. |
| Ano: 2008 |
URL: http://purl.umn.edu/109586 |
| |
|
| |
|
|
| Clarkson,Bruno; Almeida,Lúcia M.. |
| Abstract As an add-on to the work of Clarkson et al. (2016), new distributional data on species of Helobata Bergroth, 1888 (Hydrophilidae: Acidocerinae) from Brazil is provided. Helobata amazonensis Clarkson, Santos & Ferreira-Jr., 2016, is recorded for the first time for Roraima State and its female is recorded for the first time. Helobata quatipuru Fernández & Bachmann, 1987 and H. larvalis (Horn, 1873) are recorded for the first time for Minas Gerais, Cerrado Biome area. The genus is recorded for the first time for Goiás State. Additions and modifications in the previously published key to Brazilian species are provided. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acidocerinae; Amazon; Cerrado; Hydrophiloidea; Neotropical Region. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492018000100233 |
| |
|
|
| ADIS,Joachim; PAARMANN,Wilfried; AMORIM,Maristela A.; ARNDT,Erik; FONSECA,Claudio R. V. da. |
| Over a seven year period from 1991 to 1997, 22 species of tiger beetles, representing nine genera, were recorded near Manaus, Brazil. In the Whitewaterfloodplains along the Rio Solimões-Amazonas (Ilha de Marchantaria), three diurnal species inhabit inundation forests and six species (two diurnal, four nocturnal) live in open areas. Data on their natural history and adaptation to living conditions in floodplains are presented. Fifteen species were located on non-flooded uplands (Reserva Florestal A. Ducke). Five diurnal species inhabit the forest floor, two species are canopy dwellers, and eight species (seven diurnal, one nocturnal) live in open areas on whitesand or laterite. Only one species, Pentacomia lacordairei, was found in both floodplain and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tiger beetles; Floodplains; Várzea; Terra firme; Amazon; Neotropics. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671998000300247 |
| |
|
| |
| Registros recuperados: 239 | |
|
|
|
