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Registros recuperados: 23 | |
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Mendonça,Luciana B.; Anjos,Luiz dos. |
We investigated flower morphology, nectar features, and hummingbird visitation to Palicourea crocea (Rubiaceae), a common ornithophilous shrub found in the riparian forest understory in the Upper Paraná River floodplain, Brazil. Flowers are distylous and the style-stamen dimorphism is accompanied by other intermorph dimorphisms in corolla length, anther length, and stigma lobe length and form. We did not observe strict reciprocity in the positioning of stigma and anthers between floral morphs. Flowering occurred during the rainy season, October to December. Nectar standing crop per flowerwas relatively constant throughout the day, which apparently resulted in hummingbirds visiting the plant throughout the day. Energetic content of the nectar in each flower... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bird-plant interactions; Heterostyly; Pollination; Brazilian Atlantic forest; Riparian vegetation; Conservation. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000100006 |
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Anjos,Luiz dos. |
Bird communities were studied in two types of fragmented habitat of Atlantic forest in the State of Paraná, southern Brazil; one consisted of forest fragments that were created as a result of human activities (forest remnants), the other consisted of a set of naturally occurring forest fragments (forest patches). Using quantitative data obtained by the point counts method in 3 forest patches and 3 forest remnants during one year, species richness and relative abundance were compared in those habitats, considering species groups according to their general feeding habits. Insectivores, omnivores, and frugivores presented similar general tendencies in both habitats (decrease of species number with decreasing size and increasing isolation of forest fragment).... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Bioacoustics; Brazilian Atlantic forest; Conservation; Forest fragmentation. |
Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200036 |
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Santana,Cássius Ricardo; Anjos,Luiz dos. |
Agrupamentos de bambu têm sido considerados relativamente importantes para um grande número de espécies de aves, principalmente na Amazônia. No presente estudo avaliamos as variações na abundância de aves associadas ao bambu Chusquea sp. em áreas com diferentes disponibilidades deste microhábitat no interior de floresta nativa, na porção sul da Mata Atlântica, Estado do Paraná. Amostragens por ponto-de-escuta foram realizadas durante 25 dias em cinco trilhas, três em áreas com agrupamentos de bambu e duas em áreas onde este microhábitat estava ausente; as trilhas diferiram na disponibilidade de bambu. As áreas de estudos foram o Parque Estadual Mata dos Godoy e um fragmento florestal adjacente que, juntos, formam uma área maior que 2.000 ha no Norte do... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aves; Bambu; Chusquea; Mata Atlântica. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000200003 |
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Marques,Fernanda Cristina; Anjos,Luiz dos. |
In this study we investigated the relationship between the sensitivity to forest fragmentation of bird species and their habitat spatial distribution. We hypothesized that a homogenous spatial distribution is associated to habitat-generalist species, which would tend to be less sensitive to forest fragmentation; in contrast, a heterogeneous spatial distribution would drive to an increase of sensitivity to forest fragmentation. We concentrated on analyses of the suboscine birds, which are known to be closely associated to microhabitats. Field data was obtained in the Parque Estadual Mata dos Godoy (23°27′ S, 51°15′ W), southern Brazilian Atlantic forest. This reserve has high Biotic Integrity levels, with a relatively high number of recorded suboscines.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microhabitat; Habitat-specialization; Suboscine birds. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032014000300116 |
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Gimenes,Márcio Rodrigo; Anjos,Luiz dos. |
The aim of this study was to analyze the seasonal variations in habitat selection and abundance of Ciconiiformes species in four foraging habitats (rivers, channels, connected and disconnected lagoons) on the upper Paraná River floodplain, Brazil, and to conduct the surveys of wading birds in 2002 and 2003. The largest number of species and highest abundances of most species were observed in the connected lagoons. Snowy Egrets (Egretta thula), Wood Storks (Mycteria americana), Roseate Spoonbills (Platalea ajaja), and Jabirus (Jabiru mycteria) frequently used connected lagoons (habitat with the highest fish abundance) and abandoned the areas during floods, suggesting that they were able to find high quality patches for foraging. Cocoi Herons (Ardea cocoi),... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wading birds; Ciconiiformes; Prey availability; Floodplain; Paraná river. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000200025 |
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Anjos,Luiz dos; Volpato,Graziele H.; Lopes,Edson V.; Serafini,Patrícia P.; Poletto,Fabíola; Aleixo,Alexandre. |
We compared the composition and guild structure of bird communities of riparian and upland forest in an Atlantic forest reserve, the Godoy State Park (GP), in northern Paraná State, southern Brazil. Unlimited distance point counts were sampled monthly from September-December 2001, along four trails. Two trails in upland forest (TA and TB) were parallel to each other and about 300 m apart. Two trails in riparian forest (TC and TD) were along the Apertados River, about 100 m away from the river. A total of 145 species were recorded: 81 species were recorded in both upland and riparian forests, 19 species were recorded only in upland forest and 45 species were recorded exclusively in riparian forest. Among the 81 species occurring in both forest types, 18... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bird abundance; Bird guild species; Semi-deciduous forest. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752007000400027 |
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Fávaro,Fernando de L.; Anjos,Luiz dos; Lopes,Edson V.; Mendonça,Luciana B.; Volpato,Graziele H.. |
Variações na riqueza e abundância de Furnariidae florestais foram analisadas ao longo do gradiente altitudinal/latitudinal da bacia do rio Tibagi (BRT), Paraná, Brasil. A Floresta Ombrófila Mista (1060 m a.n.m.) é a formação dominante no sul da BRT, enquanto que a Floresta Estacional Semidecidual (298 m a.n.m.), ocorre no norte. O número total de espécies obtidas na BRT foi 14. A riqueza e a abundância de Furnariidae foram maiores no sul (12 espécies, IPA = 2,01) do que no norte (cinco espécies, IPA = 0,45) da BRT. As similaridades também foram altas entre o sul e o centro da BRT. A estrutura da comunidade de Furnariidae também apresentou correlação positiva entre o sul e o centro da BRT (coeficiente de correlação por postos de Spearman; r s = 0,96, r s =... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Altitude; Floresta estacional; Semidecidual; Floresta ombrófila mista; Latitude. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000100020 |
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Machado,Reginaldo Assêncio; Bernarde,Paulo Sérgio; Morato,Sérgio Augusto Abrahão; Anjos,Luiz dos. |
This study provides a list of anurans occuring in Londrina Municipality, north of Paraná, and analyses the difference in species richness between one well preserved forest area (Parque Estadual Mata dos Godoy) and another, altered area (Estação de Piscicultura da Universidade Estadual de Londrina). The greatest number of species was in the preserved area (24 species) when compared to the altered one (14 species). The occurence of true forest species (stenoics), such Crossodactylus sp., Eleutherodactylus binotatus, E. guentheri, and Hyalinobatrachium uranoscopum, only in the Parque Estadual Mata dos Godoy shows the conservation leveis of áreas and put in evidence the anurans as biological indicators of environmental quality. New registers for Paraná State... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anuran amphibians; New records; Habitats; Paraná; Brazil. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400009 |
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Fávaro,Fernando de Lima; Anjos,Luiz dos. |
Este estudo identifica quais variáveis caracterizam os microhabitats de Habia rubica (Vieillot, 1817) e Trichothraups melanops (Vieillot, 1818) e verifica o padrão de abundância dessas espécies em relação aos parâmetros de microhabitat. Análise de componentes principais mostrou as variáveis de microhabitat mais importantes para cada espécie. O microhabitat de H. rubica foi caracterizado pelo estrato médio aberto e sub-bosque denso e rico em samambaias, arvoretas, herbáceas e cipós; esta espécie apresentou maior abundância nos locais ricos em tais variáveis. Para T. melanops, as variáveis mais importantes foram samambaias, arbustos, arvoretas, herbáceas, cipós, árvores de grande porte e quantidade de árvores com briófitas; a abundância desta espécie não foi... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fragmentação florestal; Microhabitat; Paraná. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000100026 |
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Lopes,Edson V.; Volpato,Graziele H.; Mendonça,Luciana B.; Fávaro,Fernando de L.; Anjos,Luiz dos. |
Neste estudo a riqueza e a abundância de Thamnophilidae foram avaliadas e correlacionadas com parâmetros ambientais em quatro áreas de floresta da bacia do rio Tibagi (B1, M1, A1 e A2) dispostas em um gradiente ambiental. Em cada área, foi caracterizada a vegetação e, para cada espécie, foram analisados: 1) o microhabitat, 2) a distribuição espacial e 3) o tempo investido em cada local de forrageio. O número de espécies foi semelhante entre as áreas, contudo, em B1 foi registrada maior abundância. A vegetação desta área apresentou valor de correlação relativamente baixo quando comparada as outras três, que apresentaram valores maiores entre si. Emaranhados de cipó em todos os estratos, estrato médio e superior denso e ocorrência de clareiras foram... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Distribuição espacial; Duração do forrageio; Floresta Atlântica; Microhabitat. |
Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000200013 |
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Anjos,Luiz dos; Vielliard,Jacques M. E.. |
The vocal repertoire of the Azure Jay Cyanocorax caeruleus (Vieillot, 1818) is approached from a quali-quantitative point of view. The qualitative analysis was carried out both in the field and in captivity: the quantitative analysis was made only in captivity. Social acoustic communication in the Azure Jay is achieved through the use of two types of call: basic and intermediate calls. Fourteen basic calls are identified and presented through sonograms: the sotto voce song (courtship call) is related only to courtship and the social call is interpreted as the song in the Azure Jay. The intermediate calls are recombinations of the basic calls uttered during an alteration in motivation level. Examples of them are presented through sonograms of vocalizations... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aves; Corvidae; Cyanocorax caeruleus; Repertoire; Behavior. |
Ano: 1993 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000400011 |
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Anjos,Luiz dos; Graf,Vinalto. |
Two hundred and eighty eight bird species were registered in Santa Rita Farm, east of Paraná State in Brazil (28º18'S,49º48'W), from February 1990 to January 1991. Eighty four species were registered in all 12 months and eighty three were registered once during this period. October was the richest in number of species (220) and July was the poorest (137). The natural landscape of the Santa Rita farm is composed of open field with several patches of araucaria forest (from 10 to 40 ha) and some small areas of marshland. Two hundred and eight species occurred only in one of these habitats: 163 in the forest, 35 in the open field and 10 in the marshland. The others often occurred in both forest and open field; there is a gradient of occurrence between them.... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Richness; Distribution; Paraná; Brazil. |
Ano: 1993 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000400013 |
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Anjos,Luiz dos. |
Observations and recordings of Picumnus nebulosus Sundevall, 1866 were carried out at Santa Rita farm (21º15'S, 50º00'), municipality of Palmeira, state of Paraná, southern Brazil, from 1984 to 1991. The song of this species (0.25 s to 0.64 s total time) is composed by a series of four to six high pitched (6.3 to 7.8 kHz) and short (0.03 to 0.05 s) notes (n=23). The fight call is a series of very short notes emitted between 2 to 8 kHz during 0.23 s to 0.32 s (n=34). The drum, a sequence of pulses, is emitted during 3.5 to 7.2 s (n=42); the four sequences in the begining are composed by four pulses and the rest by three pulses. P. nebulosus was more abundant in forest patches than in continuous forest. It was usually watched foraging in branches 1 to 4 mm... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Picumnus nebulosus; Sounds; Habitat; Abundance; Araucaria forest. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000200009 |
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Registros recuperados: 23 | |
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