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| Registros recuperados: 109 | |
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| Silva,Jaomara Nascimento da; Ponciano,Niraldo José; Souza,Claudio Luiz Melo; Souza,Paulo Marcelo de; Viana,Leandro Hespanhol. |
| Abstract Viticulture is a recent activity in Rio de Janeiro, which has been well adapted to the edaphoclimatic conditions of the north and northwest regions of Rio de Janeiro. The aim of this study was to characterize the main socioenvironmental and technological aspects of grape production in these regions. Data were collected in 2017 and 2018, from the application of questionnaires to 16 grape producers in the regions, for descriptive statistical analysis and preparation of tables and graphs. In both regions small producers are the main investors. Most of them do not participate in associations and have technical assistance in particular. The region has favorable edaphoclimatic characteristics, mainly for the cultivation of rustic grapes, predominantly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Viticulture; Vitis labrusca; Rio de Janeiro. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000600501 |
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| Guedes,Gustavo H.S.; Salgado,Fernando L.K.; Uehara,Wagner; Ferreira,Débora L. de Paiva; Araújo,Francisco G.. |
| ABSTRACT Leptopanchax opalescens (Myers, 1942) is a small seasonal killifish endemic to coastal drainages in the state of Rio de Janeiro, Brazil. Leptopanchax opalescens was recaptured in temporary open vegetation pools (22°42.35’S, 43°41.59’W) in the hydrographic basin of the Guandu River, state of Rio de Janeiro, Brazil, after eight years without records. Information on habitat and population parameters (Capture per unit area (CPUA), size, sex ratio and length-weight relationship (LWR)) are given to provide subsidies for the conservation of this species. Specimens were captured during the rainy season (January-April 2020) in shallow pools (mean depth = 21 ± 12 s.d. cm), with relatively acidic pH (5.2 ± 0.8) and low concentrations of dissolved oxygen (3.5... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annual fish; Atlantic forest; Conservation; Rio de Janeiro; Southeast Brazil; Threatened fauna. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702020000100329 |
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| Zanon,Mariana S.; Vale,Mariana M.; Alves,Maria Alice S.. |
| The Tropical Mockingbird Mimus gilvus (Vieillot, 1808) is a widespread species in the Neotropics, but its southernmost populations in Brazil are ecologically (and possibly taxonomically) distinct, occurring only along the coast in restinga vegetation. Once considered the most common bird in restinga, it is becoming increasingly rare, likely due to habitat loss and illegal capture of nestlings. We conducted field surveys to provide an up-to-date distribution of the Tropical Mockingbird in the southernmost portion of the species' range, in the state of Rio de Janeiro, supplying an estimate of its current regional population size and conservation status. We surveyed 21 restinga remnants in Rio de Janeiro, covering all major restinga areas in the state. For... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Conservation status; IUCN; Restinga; Rio de Janeiro. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000100001 |
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| Viana,Alessandra da Fonseca; Vianna,Marcelo. |
| The stomach contents of the eyespot skate, Atlantoraja cyclophora (Regan, 1903), were examined with the goal to provide information about the diet of the species. Samples were collected off the southern coast of Rio de Janeiro, Brazil, near Ilha Grande, between January 2006 and August 2007, at a depth of about 60 m. The diet was analyzed by sex, maturity stages and quarterly to verify differences in the importance of food items. The latter were analyzed by: frequency of occurrence, percentage of weight and in the Alimentary Index. The trophic niche width was determined to assess the degree of specialization in the diet. Additionally, the degree of dietary overlap between males and females; juveniles and adults and periods of the year were defined. A total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diet; Elasmobranch; Trophic niche; Rajidae; Rio de Janeiro. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000200003 |
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| Souza,Raquel Pereira de. |
| Resumo: A pequena importância econômica da agropecuária para o estado do Rio de Janeiro não implica na inexistência de áreas rurais, mas, sim, que as áreas rurais do estado estejam diante de uma realidade em que outras funções dos espaços rurais estejam presentes (lazer, turismo) e que essa ruralidade seja capaz de fornecer processos virtuosos de desenvolvimento rural. Dessa forma, o presente artigo tem por objetivo analisar e comparar os processos de desenvolvimento rural no estado do Rio de Janeiro a partir de indicadores multidimensionais de desenvolvimento rural, resgatando seus determinantes. Para tanto, foi realizada uma adaptação da metodologia proposta por Kageyama (2008). Os dados necessários à construção dos indicadores foram coletados... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Indicadores; Desenvolvimento rural; Rio de Janeiro; Análise de clusters. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-20032019000100109 |
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| Porto,Gabriele R.; Piratelli,Augusto. |
| O objetivo deste trabalho foi estudar padrões comportamentais de Molothrus bonariensis (Gmelin, 1789) em condições naturais, traçando seu etograma. As coletas de dados foram efetuadas em Seropédica, no Estado do Rio de Janeiro, através de observações naturalísticas contínuas e animal-focal, utilizando-se binóculos 10 x 50 principalmente pela manhã até às 07:00h e à tarde após as 16:00h. Foram detectadas 25 condutas, agrupadas em sete categorias comportamentais: locomoção (n = 7), manutenção (n = 5), social não-agonístico (n = 5), alimentação (n = 2), social-agonístico (n = 2), vigilância (n = 2) e sonora (n = 2). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Comportamento; Locomoção; Manutenção; Rio de Janeiro. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000200002 |
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| Absalão,Ricardo Silva; Roberg,Renata Alves Pinheiro. |
| The Littorina ziczac (Gmelin, 1791) species complex was studied in Rio de Janeiro State, southeastern Brazil. The occurrence of three species was confirmed, through the analysis of penis morphology: L. ziczac (Gmelin, 1791), L. lineata d'Orbigny, 1841 and L. lineolata d'Orbigny, 1840. There is a correlation between the morphology of the penis and shell shape, thus it was possible to make a discrimination model based in conchologic data, with an efficiency of 75%. However, this model cannot be applied to others samples that weren't included in its formulation, due to phenotypic plasticity of the shell caused by biotic and abiotic factors. In the 9 areas studied L. lineolata was always the most abundam species. No vertical stratification in the distribution... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Littorina; Species complex; Vertical distribution; Biochemistiy; Rio de Janeiro; Brazil. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000200005 |
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| Santos,Sonia Barbosa dos; Monteiro,Daniele Pedrosa. |
| A survey of the Ilha Grande land snails was carried out in order to compare the diversity and similarity among two regions of secondary Atlantic Rain Forest. The diversity was estimated using the richness and the equitatibility; the alpha diversity was calculated using the Simpson index (γ). The Sörensen and Jaccard indexes were used to calculate the similarity. A quantitative survey of two 600 m² area, one in each studied region, recorded 336 individuals snails distributed in 23 species and 13 families. The region with more altered secondary forest showed higher richness (17) and diversity (γ = 3,6) than the region more preserved (richness = 14; γ = 2,78), but, the same equitatibility (0,20). The similarity was medium by Jaccard index (IJ = 0,52) and low... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Terrestrial gastropods; Diversity; Ecology; Rio de Janeiro; Brazil. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000500014 |
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| Monteiro,Daniele Pedrosa; Santos,Sônia Barbosa dos. |
| Thirty shells of Tamayoa (Tamayops) banghaasi (Thiele, 1927) from Ilha Grande, Rio de Janeiro, were analyzed with a stereomicroscop showing the following characteristics: discoid shell, without macrosculptures; ovate-lunate aperture without teeth. Thin, sharp and not-reflected lip; umbilicus with 1/5 of the shell's diameter; impressed suture, total whorls from 4 to 5.5; protoconch with 1.5 to 2 whorls; yellowish-amber, translucent and glossy periostracum. The morphology of the shells were discussed, as well as the shell's dimensions. The conchomorphological patterns are important for systematic studies of mollusks and this work presents data that can be used in future studies about the family. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Systrophiidae; Tamayoa (Tamayops) banghaasi; Conchomorphology; Taxonomy; Rio de Janeiro. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000400002 |
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| Moraes,Luzia A. F. de; Andreata,José V. |
| This study gives information on the feeding habits of 1,015 specimens, belonging to the five most abundant fish species in the Jacarepagua Lagoon, captured between March 1990 and February 1991, using trawl net. A feeding index was introduced to compare the relative importance of various food items, according to species standard length. A clustering analysis was calculated by using numerical coefficient of food items and defined two main groups: The 1 st represented by Xenomelaniris brasiliensis (Quoy & Gaimard, 1824) and Jenynsia lineata (Jenyns, 1842) considered omnivorous, fed mainly on insects, and the second including Tilapia rendalli (Boulenger, 1896), Phalloptychus januarius (Hensel, 1868) and Poecilia vivipara (Bloch & Schneider,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fishes; Feeding habits; Jacarepagua Lagoon; Rio de Janeiro; Brazil. |
| Ano: 1994 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000400020 |
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| Paiva,Melquíades Pinto; Falcão,Ana Paula da Costa. |
| This paper deals with the schooling structure of Brazilian-sardine, Sardinella brasiliensis (Steindachner, 1879), in coastal waters of Rio de Janeiro State (Brazil). Samples were obtained from schools caught by commercial fishery in the area of Angra dos Reis (23º-24ºS, 44º-45ºW), from autumn/1999 to summer/2000, comprising 2,278 fishes. In average, males had total lengths and weights lower than those of females, with major differences in weights. Seasonal fluctuations of average total weights are associated with the annual reproduction cycle and condition factor, mainly in females. Sex-ratio was around 1:1, except in winter, when females were in majority. Mature males and females were found all along the year, with a peak in the spring-summer, showing a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian-sardine; Sardinella brasiliensis; Schooling structure; Rio de Janeiro; Southeast Brazil. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000600009 |
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| Souza,Alexandre Santos de; Oliveira,Sebastião José de; Couri,Márcia Souto. |
| Female mosquitoes (Culicidae) were collected in human bait weekly between March 1997 to February 1998, in three different areas of the oceanic region of Niterói city, Rio de Janeiro State, in southeastern coast of Brazil. The results indicated the presence of 16 species: Anopheles aquasalis, Aedes scapularis, A. taeniorhynchus, A. albopictus, A. aegypti, Haemagogus leucocelaenus, Psorophora ferox, P. conffinis, P. cingulata, Culex quinquefasciatus, C. nigripalpus, Coquillettidia venezuelensis, Uranotaenia calosomata, Limatus durhami, Weyomyia oblita and Phoniomyia sp. A statistical analysis between monthly female frequencies and temperature, air humidity and precipitation monthly indices was done, using Sperman correlation in Statistica 4.2 program. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diptera; Culicidae; Ecology; Niterói; Rio de Janeiro. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200027 |
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| Imbassahy,Caio Amitrano de Alencar; Costa,Denise Pinheiro da; Araujo,Dorothy Sue Dunn de. |
| Este trabalho representa uma síntese do conhecimento florístico de briófitas do Parque Nacional da Restinga de Jurubatiba, com resultados de campo, material de herbário e publicações. Foram registrados 61 táxons de briófitas, pertencentes a 15 famílias e 33 gêneros. Para cada táxon foram analisados a distribuição geográfica, o tipo de substrato e a forma de vida. A família predominante foi Lejeuneaceae (25 espécies), seguida de Jubulaceae (sete), Calymperaceae (quatro) e Sphagnaceae (quatro). Entre as espécies, predominaram as de distribuição Neotropical (35%). Com relação ao substrato preferencial, a maior parte dos táxons é corticícola. A forma de vida predominante foi o tapete, seguido pelo tufo e a trama. O Parque possui brioflora bastante... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Florística; Hepáticas; Musgos; Restinga; Rio de Janeiro. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000200028 |
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| Registros recuperados: 109 | |
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