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Abundance of two Dendrocincla woodcreepers (aves: Dendrocolaptidae) in relation to forest structure in Central Amazonia Acta Amazonica
Cintra,Renato; Maruoka,Adrianny Erika; Naka,Luciano Nicolas.
Few studies have been conducted to verify how the structure of the forest affects the occurence and abundance of neotropical birds. Our research was undertaken between January 2002 and July 2004 at the Reserva Ducke, near Manaus (02º55',03º01'S; 59º53',59º59'W) in central Amazonia, to verify how the forest structure affects the occurrence and abundance of two bird species: the Plain-brown Woodcreeper Dendrocincla fuliginosa and the White-chinned Woodcreeper Dendrocincla merula. Bird species occurrence was recorded using lines of 20 mist-nets (one sample unit), along 51 1-km transects distributed along 9 pararel 8 km trails covering an area of 6400 ha. Along these transects, we placed 50 x 50m plots where we recorded forest structure components (tree...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abundance; Distribution; Birds; Dendrocolaptidae; Dendrocincla; Amazon forest.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672006000200011
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Activity patterns of frugivorous phyllostomid bats in an urban fragment in southwest Amazonia, Brazil Iheringia, Sér. Zool.
Verde,Rair S.; Silva,Richarlly C.; Calouro,Armando M..
ABSTRACT: The habitat fragmentation modifies the pattern of animal activity. This study aimed to determine the activity pattern of frugivorous bat species in an urban forest fragment in southwestern Amazonia. The study was conducted from August 2013 to September 2014 with 10 mist nets (9m x 2.5m), opened at ground level throughout all the night and totaling 64,800 m².hour/net. Two hundred and sixty-one captures of bats from 28 species were recorded. The period with the highest capture rate and species of bats was the first period of the night (until 00:00). The species with the highest incidence of catches were, in ascending order, Carollia brevicauda (Schinz, 1821), Carollia perpicillata (Linnaeus, 1758), Artibeus planirostris (Spix, 1823), and Artibeus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon forest; Forest fragmentation; Fruit-eating; Pattern hourly activity; Phyllostomidae.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100216
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Allometric models to estimate tree height in northern Amazonian ecotone forests Acta Amazonica
BARBOSA,Reinaldo Imbrozio; RAMÍREZ-NARVÁEZ,Perla Natalia; FEARNSIDE,Philip Martin; VILLACORTA,Carlos Darwin Angulo; CARVALHO,Lidiany Camila da Silva.
ABSTRACT Allometric models defining the relationship between stem diameter and total tree height in the Amazon basin are important because they refine the estimates of tree carbon stocks and flow in the region. This study tests different allometric models to estimate the total tree height from the stem diameter in an ecotone zone between ombrophilous and seasonal forests in the Brazilian state of Roraima, in northern Amazonia. Stem diameter and total height were measured directly in 65 recently fallen trees (live or dead). Linear and nonlinear regressions were tested to represent the D:H relation in this specific ecotone zone. Criteria for model selection were the standard error of the estimate (Syx) and the adjusted coefficient of determination (R²adj),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allometry; Amazon forest; Hypsometric relationships; Dendrometry; Seasonal forest.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000200081
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Draft genome sequence of Bradyrhizobium manausense strain BR 3351T, an effective symbiont isolated from Amazon rainforest BJM
Simões-Araújo,Jean Luiz; Rumjanek,Norma Gouvêa; Xavier,Gustavo Ribeiro; Zilli,Jerri Édson.
ABSTRACT The strain BR 3351T (Bradyrhizobium manausense) was obtained from nodules of cowpea (Vigna unguiculata L. Walp) growing in soil collected from Amazon rainforest. Furthermore, it was observed that the strain has high capacity to fix nitrogen symbiotically in symbioses with cowpea. We report here the draft genome sequence of strain BR 3351T. The information presented will be important for comparative analysis of nodulation and nitrogen fixation for diazotrophic bacteria. A draft genome with 9,145,311 bp and 62.9% of GC content was assembled in 127 scaffolds using 100 bp pair-end Illumina MiSeq system. The RAST annotation identified 8603 coding sequences, 51 RNAs genes, classified in 504 subsystems.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon forest; Biological nitrogen fixation; Next generation sequencing; Nodulation; Cowpea.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400610
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Eufriesea pulchra smith (Hymenoptera: Apidae: Euglossini): extended geographic distribution and filling gaps in Mato Grosso state, Brazil Neotropical Entomology
Anjos-Silva,Evandson J dos.
This study was conducted in the Cotriguaçu district, situated on the bank of the Juruena River, in Mato Grosso state. The collects were carried out from August 22 to 25, 2007 with chemical baits to attract male orchid bees. The bees were captured on a daily basis, from 8 a.m. to 12 p.m. Of the 89 males captured three belonged to Eufriesea pulchra Smith. Before the present study, E.pulchra had been reported in the states of Pará, Amazonas, Amapá, (dubiously) São Paulo, and Maranhão. This occurrence extends its geographical distribution range by 900 to 2,000 km southwards in South America, as it is now recorded in the Amazon and Platina basins.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Apinae; Orchid bee; Amazon forest.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000100019
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First capture of Micronycteris homezi Pirlot (Chiroptera, Phyllostomidae) in Brazil Zoologia
Bernard,Enrico.
The first capture of the phyllostomid bat Micronycteris homezi Pirlot, 1867 in Brazil is reported. An adult male was captured in a forest fragment in Alter do Chão, Santarám, Pará State, in May 7th , 1998. A description of the species, previously reported only in Venezuela and French Guiana, is given, as well as the measures of the captured specimen. After this report, the bat fauna of Brazil is composed by 139 species.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chiroptera; Phyllostomidae; Micronycteris homezi; Amazon forest; Bats; Biodiversity; Brazil.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200032
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First description of the worker of Planicapritermes longilabrum with notes on the nest of Planicapritermes planiceps (Blattaria: Isoptera: Termitidae) Acta Amazonica
ALMEIDA-AZEVEDO,Rayssa; AZEVEDO,Renato Almeida de; SOBRAL,Rafael; MORAIS,José Wellington de.
ABSTRACT Planicapritermes Emerson, 1949 is a South American termite genus with two nominal species: Planicapritermes planiceps (Emerson, 1925) and Planicapritermes longilabrum Constantino, 1998. The soldiers of this genus are characterized by strongly asymmetrical mandibles. Planicapritermes planiceps was described from soldiers and workers, and P. longilabrum only from soldiers. Here we describe and illustrate workers of P. longilabrum based on specimens collected in Rondônia state, Brazil. We also present a comparison between workers and soldiers of P. planiceps and P. longilabrum, and describe the nest of P. planiceps.
Tipo: Info:eu-repo/semantics/report Palavras-chave: Amazon forest; Gut anatomy; Taxonomy; Termites.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000100063
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Hypatropis inermis (Hemiptera, Pentatomidae): first record on rice crops Rev. Bras. entomol.
Krinski,Diones; Foerster,Luís Amilton; Grazia,Jocélia.
This study reports for the first time the occurrence of Hypatropis inermis on upland rice crops (variety Cambará), in Novo Progresso, state of Pará, Brazil (7°07'45.71"S 55°23'21.13"W). The inventory of insect pests was conducted between November 2010 and March 2011 with entomological sweep nets and visual search on stems of rice plants. This record indicates that rice crops may represent important feeding and mating sites for this species.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon forest; Insect pest; Integrated pest management; Small rice stem stink bug.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262015000100012
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Levels of leaf Herbivory in Amazonian trees from different stages In forest regeneration Acta Amazonica
VASCONCELOS,Heraldo L..
Leaves from 120 canopy trees and 60 understory tree saplings growing in primary and secondary forests near Manaus, Brazil, were collected for determination of standing levels of herbivory (percent leaf area lost). Overall, levels of herbivory on leaves of central Amazonian trees were low. About one quarter of the leaves examined (n = 855) had no damage at all. In most other Neotropical sites studied the mean percentage of herbivory was found to vary between 5.7 and 13.1%, whereas in Manaus it was only 3.1%. The data presented here support the contention that levels of herbivore damage are positively related to soil fertility. No significant difference was found in herbivory levels between canopy trees and understory saplings. Also, there was no difference...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ants; Atta laevigata; Herbivory; Insect-plant interactions; Amazon forest.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671999000400615
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Microsatellite markers for Ceiba pentandra (Bombacaceae), an endangered tree species of the amazon forest Repositório Alice
BRONDANI, R. P. V.; GAIOTTO, F. A.; MISSIAGGIA, A. A.; KIRST, M.; GRIBELS, R.; GRATTAPAGLIA, D..
Tipo: Separatas Palavras-chave: Microsatelite; Arvore tropical; Microsatellite; Tropical tree; Amazon forest; Bombacaceae; Ceiba Pentandra; Floresta Tropical.
Ano: 2003 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/184931
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Neisseria meningitidis: a neglected cause of infectious haemorrhagic fever in the amazon rainforest BJID
Barroso,David E.; Silva,Luciete A..
Neisseria meningitidis has not been seen as a significant cause of infectious haemorrhagic fever in the Amazon inlands; most reported cases are from the city of Manaus, the capital of the State of Amazonas. This picture is sustained by the lack of reliable microbiology laboratories, the perception of the health care workers, and the difficult to reach medical assistance; thus the number of confirmed cases is even lower with no reference of the strains phenotype. We report here the investigation of a case of suspected meningococcemia and his close contacts in a rural community in the Coari Lake, up the Amazon River.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neisseria meningitidis; Meningococcal disease; Haemorrhagic fever; Amazon forest.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000600014
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Palm community transitions along a topographic gradient from floodplain to terra firme in the eastern Amazon Acta Amazonica
SALM,Rodolfo; PRATES,Anderson; SIMÕES,Nadson RESSYÉ; FEDER,Lisa.
Palms show clear niche segregation patterns along topographic gradients in tropical forests, with some species associated to terra firme and others to seasonally flooded areas. The aim of this study was to quantitatively describe the fine-scale spatial variation within a palm community, tracking the changes in species' abundance along environmental gradients associated with a perennial stream the eastern Amazon. The study of palm communities was based on 60 forest plots in which all adult palms were counted. We found a total of 566 palms in a community containing 11 species. Furthermore, we found a significant separation in the palm community between seasonally-flooded and terra firme forests. We found a gradient with various densities of the three most...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon forest; Fine-scale distribution; Xingu River.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000100065
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Patterns of biodiversity response along a gradient of forest use in Eastern Amazonia, Brazil. Repositório Alice
MILHEIRAS, S. G.; GUEDES, M. C.; SILVA, F. A. B.; APARÍCIO, P.; MACE, G. M..
The preservation of tropical forests is increasingly at risk, including forests located within human-modified landscapes that retain high conservation value. People modify and interact with these landscapes through a wide range of uses. However, our knowledge of how different forest uses affect biodiversity is limited. Here, we analyse the responses of different taxa to four distinct categories of forest management, namely oldgrowth forest, Brazil nut extraction areas, reduced impact logging areas, and eucalyptus plantations. Within six independent replicates of each category, we sampled three taxa (fruit-feeding butterflies, dung beetles, and trees) in eastern Amazonia. Forests under moderate use (Brazil nut extraction and reduced-impact logging) had...
Tipo: Artigo de periódico Palavras-chave: Scarabaeinae; Selective logging; Manejo florestal; Amazon forest; Floresta Tropical; Castanha; Forest management; Nymphalidae; Brazil nuts.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1128305
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PEDO-TRANSFER FUNCTIONS FOR ESTIMATING SOIL BULK DENSITY IN CENTRAL AMAZONIA Rev. Bras. Ciênc. Solo
Barros,Henrique Seixas; Fearnside,Philip Martin.
Under field conditions in the Amazon forest, soil bulk density is difficult to measure. Rigorous methodological criteria must be applied to obtain reliable inventories of C stocks and soil nutrients, making this process expensive and sometimes unfeasible. This study aimed to generate models to estimate soil bulk density based on parameters that can be easily and reliably measured in the field and that are available in many soil-related inventories. Stepwise regression models to predict bulk density were developed using data on soil C content, clay content and pH in water from 140 permanent plots in terra firme (upland) forests near Manaus, Amazonas State, Brazil. The model results were interpreted according to the coefficient of determination (R2) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon forest; Terra firme (upland); Manaus; Brazil; Soil carbon stocks.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000200397
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Pollen morphology of the genera Irlbachia, Tachia, Voyria and Voyriella (Gentianaceae Juss.) found in the Reserva Florestal Adolpho Ducke (Amazonas, Brazil) Acta Botanica
Ferreira,Marcos Gonçalves; Absy,Maria Lúcia; Gonçalves-Esteves,Vânia.
A pollen morphology study of the Gentianaceae Juss. of Reserva Florestal Adolpho Ducke (Manaus, Brazil) was performed. The pollen grains of the studied species varied morphologically in their pollen units (tetrads or monads), size (small, medium and large), shape (oblate, suboblate, oblate spheroidal, spheroidal, prolate spheroidal and prolate), polarity (heteropolar, isopolar or subisopolar), symmetry (bilateral or radial) and number and type of aperture (3-colporate and 1-3porate). In relation to ornamentation, pollen grains had a sexine that was psilate in the Voyria species, microreticulate in Voyriella parviflora and reticulate heterobrochate in Tachia grandiflora and Irlbachia alata. The exine in I. alata showed great variability in the size and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon forest; Neotropical species; Palynology; Taxonomy.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000400020
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Species list of bats (Mammalia, Chiroptera) of Santarém area, Pará State, Brazil Zoologia
Bernard,Enrico.
Despite its enormous area, diversity of habitat, and bat species, studies in the Brazilian Amazon represent just a small portion of the bat research in the South América. Consequently, the distribution of the major part of the bat species in the Brazilian Amazon remains incompletely documented. Conservation strategies involving bat species in the Brazilian Amazon may be difficult without more information about geographic distribution, status, roost, food preferences, and reproduction of the species. Here is presented an updated list of species of bats of Alter do Chão, and complete this list with data from the nearby Amazon National Park, providing a list of bats in the Santarém area. This list includes at least 55 species of bats, representing 34 genera,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chiroptera; Species list; Amazon forest; Bats; Biodiversity; Tapajós river; Santarém; Brazil.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200016
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