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Registros recuperados: 7
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Chemical properties and mineralogy of soils with plinthite and petroplinthite in Iranduba (AM), Brazil Rev. Bras. Ciênc. Solo
Garcia,Cira Hortensia Pérez; Lima,Hedinaldo Narciso; Silva,Francisco Weliton Rocha; Neves Junior,Afrânio Ferreira; Teixeira,Wenceslau Geraldes; Macedo,Rodrigo Santana; Tavares,Sérgio Guimarães.
Large areas of Plinthosols with ferruginous materials such as plinthite and/or petroplinthite are fairly common in the Brazilian Amazon basin. This work was carried out to investigate the chemical behavior, mineralogical composition and weathering stage of four representative soil profiles with plinthite and petroplinthite, in Iranduba, AM (Central Amazon). Three well-drained soil profiles at high elevations were studied (P1, Plinthic Vetic Ferralsol; P2 and P3, Vetic Endopetric Plinthosol) and a contrasting poorly drained soil (P4 Haplic Plinthosol), located at low elevation. After profile descriptions, soil samples were collected from each horizon, air-dried, sieved (2 mm), and analyzed for particle-size distribution, pH, exchangeable cations (Al3+,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plinthosol; Soil fertility; XRD; Weathering degree; Central Amazon.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000400011
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Comunidade de formigas que nidificam em pequenos galhos da serrapilheira em floresta da Amazônia Central, Brasil Rev. Bras. entomol.
Carvalho,Karine S.; Vasconcelos,Heraldo L..
Community of ants that nest in dead twigs on the ground of Central Amazonian forest, Brazil. A total area of 2,880 m² in four forest sites, near Manaus, Brazil, was searched for ant colonies nesting in dead twigs on the ground. An amount of 3,706 twigs (0.5-5 cm in diameter) were gathered, of which only 623 (16.8%) had ants, which is equivalent to a density of 0.22 nests per m². Seventy species have been found. The predominant genera were Pheidole (Westwood), Crematogaster (Lund), and Solenopsis (Westwood). For most species, many of the nests found had only workers and brood, suggesting that colonies either use multiple twigs to nest or do not live exclusively in the twigs, using other types of substrate (e.g., leaf-litter, soil, fruit pods) to nest. Most...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ants; Central Amazon; Formicidae; Litter invertebrates; Tropics.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262002000200002
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Occurrence of Aelurostrongylus abstrusus (Railliet, 1898) larvae (Nematoda: Metastrongylidae) infecting Achatina (Lissachatina) fulica Bowdich, 1822 (Mollusca: Gastropoda) in the Amazon region Acta Amazonica
Andrade-Porto,Sanny Maria de; Souza,Kelly Cristina Pereira de; Cárdenas,Melissa Querido; Roque,Rosemary A.; Pimpão,Daniel Mansur; Araújo,Cleusa Suzana; Malta,José Celso de Oliveira.
Achatina fulica or "giant African snail" is an exotic species, considered to be one of the world's hundred most invasive species, causing serious environmental damages. In the present study we report, for the first time, the occurrence of Aelurostrongylus abstrusus infecting A.fulica in the Amazon region. This nematode is described parasitizing mainly the pulmonary system of felines, which causes "aelurostrongilose", also known as feline cardio-pulmonary strongyloidosis. New morphometric data of third stage larvae are presented herein. The present study demonstrated that 40% of all the snails were infected by A. abstrusus. Achatina fulica specimens were collected from three different areas in Manaus namely: rural; east and west areas. The east area...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Giant african snail; Parasitology; Nematode larvae; Helminth; Central Amazon.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672012000200010
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Phylogenetic relationships of the family Tarumaniidae (Characiformes) based on nuclear and mitochondrial data Neotropical Ichthyology
Arcila,Dahiana; Petry,Paulo; Ortí,Guillermo.
ABSTRACT Characiformes is an order of freshwater fishes that includes many commercially important and emblematic species from South America and Africa, such as the popular piranhas, hatchetfishes, African tiger fishes and tetras. The order is split into two suborders with a total of 24 families, 282 genera and ca. 2,100 species. Here, we present an expanded phylogeny of characiform fishes, including data for 520 species and three genes (12S, 16S and RAG1), and the recently described family Tarumaniidae, which has not been examined by previous molecular analysis. Although our genetic coverage is limited to three gene fragments, the tree inferred based on maximum likelihood and Bayesian inference supports the monophyly of all characiform families and is...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Central Amazon; Erythrinoidea; Freshwater fishes; Ostariophysi; Tarumania.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000300301
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Physical, chemical and mineralogical characteristics of soils with anthropics horizons (Terra Preta de Índio) in the floodplains of Solimões River in the Central Amazon-Brazil. Repositório Alice
MACEDO, R. S.; TEIXEIRA, W. G.; LIMA, H. N.; NEVES, E. G..
Tipo: Anais e Proceedings de eventos Palavras-chave: Central Amazon; Terra Preta de Índio; Solimões River.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/876078
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Soil phosphorus properties and management for perennial crops in the central Amazon. Repositório Alice
CRAVO, M. S.; LEHMANN, J.; MACEDO, J. L. V. de.
Predominant soils in the Brazilian Amazon. Phosphorus constraints to continuous soil use in the Brazilian Amazon. Phosphorus fertilization to perennial crops in the central Amazon. Phosphorus budgets in perennial crop plantations.
Tipo: Parte de livro Palavras-chave: Central Amazon; Nutrient Cycling; Perennial Crops; P Fixation.; Phosphorus; Soil types..
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/997396
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Strategies of the small-scale fisheries on the Central Amazon floodplain Acta Amazonica
FREITAS,Carlos Edwar de Carvalho; BATISTA,Vandick da Silva; INHAMUNS,Antonio José.
A multivariate approach was applied to data of small-scale fisheries developed in Central Amazon, using information about catch composition, environment, fishing gear and season of the hydrological cycle. The correspondence analysis demonstrated to be a good tool for the analysis related multispecies fisheries. The analysis identified patterns of use of fisheries resources by the riverine communities, showing the correlation between the environmental factors and the fishing strategy for the capture of target fish species, indicating the high level of empiric knowledge about the environment and fisheries.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Small-scale fisheries; Central Amazon; Multivariate analysis; Patterns.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672002000100101
Registros recuperados: 7
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