scholarly journals Mercury distribution in muscular tissues of a tropical carnivorous fish (Hoplias malabaricus) from four lakes in the North of Rio de Janeiro State, SE Brazil

2012 ◽  
Vol 7 (2) ◽  
pp. 37-42 ◽  
Author(s):  
T.B. Jesus ◽  
C.E.V. Carvalho ◽  
A.G. Ferreira ◽  
E.M. Siqueira ◽  
A.L.S. Machado
Keyword(s):  
Rio De Janeiro ◽  
Mercury Distribution ◽  
Carnivorous Fish ◽  
Hoplias Malabaricus ◽  
The North ◽  
Se Brazil ◽  
Janeiro State ◽  
Muscular Tissues

scholarly journals AN APPROACH TO THE CONTRIBUTION OF ANTHROPOGENIC ACTIONS FOR THE ARARUAMA LAGOONAL SYSTEM (SE BRAZIL) GEOMORPHOLOGICAL EVOLUTION / UMA ABORDAGEM SOBRE A INFLUÊNCIA ANTROPOGÊNICA NA EVOLUÇÃO GEOMORFOLÓGICA DO SISTEMA LAGUNAR DE ARARUAMA (SE, BRASIL)

2018 ◽  
Vol 3 (2) ◽  
pp. 108-120
Author(s):  
Olegário Nelson Azevedo Pereira ◽  
Maria Antonieta Da Conceição Rodrigues ◽  
João Manuel Alveirinho Dias
Keyword(s):  
Sea Level ◽  
Rio De Janeiro ◽  
Historical Documents ◽  
Before Present ◽  
Sea Level Changes ◽  
Economic Exploitation ◽  
Se Brazil ◽  
Geomorphological Evolution ◽  
Janeiro State ◽  
Cabo Frio

The first studies regarding the constitution of the Araruama lagoonal system, located in the Rio de Janeiro state (SE Brazil), were carried out by Alberto Ribeiro Lamego. This author supported the thesis that it had resulted from the formation of a sand barrier (called Massambaba) due to the longitudinal transport of large quantities of sediments through coastal drift currents, and the growth of spits parallel to the shoreline. However, most recent studies largely rejected it, sustaining that the confinement of these hydric environments was the result of the growth of two sand barriers during the Pleistocene and Holocene times (120.000 to 7.000 years before present - BP) due to the sea level changes. The hypothesis that we suggest, is that both propositions are acceptable and complementary. This study aims to demonstrate that, despite the opinions on the formation of the double sand barrier, deposition of sediments by coastal drift currents at the end of the Holocene, and especially in recent chronologies, also contributed to the establishment of this lagoon system. In our opinion, the increased sediment supplies due to human activities contributed to the formation of the inner spits and the nearby sea sandbar. Its orientation was influenced by the existence of the island of Cabo Frio, that allowed the formation of the tombolo that almost connected it to the continent. Through the analysis of historical and cartographic documents related to the colonization and economic exploitation of the region, it is evident that the anthropogenic actions played a significant role in the sandy spits formation. Of these, special emphasis is placed on the agriculture and deforestation that contributed to the increase of sedimentary accumulation. This work demonstrate that the analysis of historical documents can provide information and contribute to the understanding of recent coastal developments. ResumoOs primeiros estudos sobre a constituição do sistema lagunar de Araruama, localizado no estado do Rio de Janeiro (SE Brasil), foram realizados por Alberto Ribeiro Lamego. Este autor apoiou a tese de que este sistema lagunar resultou da formação de uma barreira arenosa (denominada Massambaba) na sequência do transporte longitudinal de grandes quantidades de sedimentos através das correntes costeiras de deriva litorânea e ao crescimento de flechas arenosas paralelas à linha de costa. No entanto, estudos mais recentes, rejeitaram amplamente esta hipótese, e sugeriram que o confinamento desses ambientes lagunares resultou do crescimento de duas barreiras arenosas na sequência de mudanças no nível do mar ocorridas durante os períodos Pleistocénicos e Holocênico (120.000 a 7.000 anos antes do presente - BP). A hipótese que sugerimos é que ambas as hipóteses são aceitáveis e complementares. Este estudo tem como objetivo demonstrar que, apesar das opiniões sobre a formação da dupla barreira de areia, a deposição de sedimentos por correntes de deriva costeira no final do Holoceno, e principalmente em cronologias recentes, também contribuiu para o estabelecimento deste sistema lagunar. Em nossa opinião, o aumento do fornecimento de sedimentos devido às atividades humanas contribuiu para a formação das flechas arenosas interiores e do banco de areia exterior, próximo do mar. A sua orientação foi influenciada pela existência da ilha de Cabo Frio, que permitiu a formação do tombolo que quase a conectou ao continente.Através da análise de documentos históricos e cartográficos relacionados com a colonização e exploração econômica da região, evidencia-se que as ações antropogênicas tiveram um papel significativo na formação das flechas arenosas. De entre estas, salienta-se especialmente a agricultura e o desmatamento que contribuíram para o aumento da acumulação sedimentar. Este trabalho evidencia que a análise de documentos históricos pode fornecer informações e contribuir para a compreensão da evolução recente do litoral.

scholarly journals Geo-enviromental diagnoses of the são francisco de itabapoana city in the north of Rio de Janeiro state

2020 ◽  
Vol 6 (5) ◽  
pp. 26764-26775
Author(s):  
Graziele Arantes Reis ◽  
Iago Matheus Lopes Macêdo ◽  
Rodson de Abreu Marques
Keyword(s):  
Rio De Janeiro ◽  
The North ◽  
Janeiro State

scholarly journals Glomalin in soil aggregates under different forest and pasture systems in the North of Rio de Janeiro state, Brazil

2020 ◽  
Vol 8 ◽  
pp. 100088
Author(s):  
Alessandro Santos ◽  
Cristiane Figueira da Silva ◽  
Emanuela Forestieri Gama-Rodrigues ◽  
Antonio Carlos Gama-Rodrigues ◽  
Marcus Sales ◽  
...  
Keyword(s):  
Rio De Janeiro ◽  
Soil Aggregates ◽  
The North ◽  
Janeiro State

Macrofauna associated to Mycale microsigmatosa (Porifera, Demospongiae) in Rio de Janeiro State, SE Brazil

2003 ◽  
Vol 57 (5-6) ◽  
pp. 951-959 ◽  
Author(s):  
Suzi M. Ribeiro ◽  
Elianne P. Omena ◽  
Guilherme Muricy
Keyword(s):  
Rio De Janeiro ◽  
Se Brazil ◽  
Janeiro State

ARRANJO POPULACIONAL PARA A VARIEDADE UENF-14 DE MILHO PIPOCA

2017 ◽  
Vol 16 (3) ◽  
pp. 401
Author(s):  
CÁSSIO VITORAZZI ◽  
ANTONIO TEIXEIRA AMARAL JÚNIOR ◽  
LILIAM SILVIA CANDIDO ◽  
ISMAEL LOURENÇO DE JESUS FREITAS ◽  
THIAGO RODRIGUES DA CONCEIÇÃO SILVA
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Rio De Janeiro ◽  
Zea Mays L ◽  
Block Design ◽  
Grain Production ◽  
Maize Population ◽  
The North ◽  
Randomized Complete Block Design ◽  
Janeiro State

 RESUMO - A adequação do arranjo populacional está entre as técnicas que podem maximizar a produtividade da cultura do milho. Daí a importância das pesquisas que buscam estudar o desempenho de cultivares de milho e milhos especiais, a fim de determinar o arranjo de plantas ideal. O objetivo deste trabalho foi avaliar o desempenho da variedade UENF-14, de milho pipoca, cultivada em diferentes arranjos populacionais, na safra e safrinha, para otimizar a recomendação fitotécnica para os produtores rurais do Norte Fluminense. Foram instalados dois experimentos em Campos dos Goytacazes-RJ. Um na safrinha 2011 utilizando a variedade UENF-14 e o híbrido experimental P2 x P9, e o outro na safra 2011-2012, com a variedade UENF-14 e o híbrido comercial IAC-112. O delineamento experimental, nos dois experimentos, foi o de blocos casualizados arranjados em parcelas subsubdivididas, em que as parcelas foram compostas pelos genótipos, as subparcelas constituídas pelos espaçamentos entre linhas de semeadura (0,45, 0,60 e 0,90 m) e as subsubparcelas compostas pelas densidades de plantas (60.000, 75.000 e 90.000 plantas ha-1). A UENF-14 apresentou desempenho superior aos híbridos, demonstrando seu potencial para cultivo na região Norte Fluminense. Houve aumento do rendimento de grãos com a diminuição do espaçamento entre linhas de plantio. Para a variedade UENF-14, a redução do espaçamento entre linhas de plantio foi vantajosa para a produção de grãos, independentemente da época de semeadura.Palavras-chave: Zea mays L., densidade de semeadura, espaçamento entre linhas, épocas de semeadura.  POPULATION ARRANGEMENT FOR THE VARIETY OF POPCORN UENF-14 ABSTRACT - The adequacy of the maize population arrangement is among the most important techniques for obtaining higher yields. Therefore, many researchers have been conducting an attempt to study the performance of corn and specialty corn. The objective was to evaluate the performance of the popcorn variety UENF-14 in different population arrangements, in the harvest season and off-season. Two experiments were carried out in Campos dos Goytacazes, North of Rio de Janeiro State, Brazil, in the off-season 2011, using the UENF-14 variety and the experimental hybrid P2 x P9, and in the season 2011-2012 using UENF-14 and the commercial hybrid IAC-112. The treatments were arranged in randomized complete block design with split plots, in which plots were composed by popcorn genotypes, the subplots consisting of three spacings between sowing lines (0.45, 0.60 and 0.90 m) and the subsubplots composed of three plants per hectare densities (60,000, 75,000 and 90,000 plants.ha-1). The variety UENF-14 presented higher performance than the hybrids, demonstrating its potential for recommendation to the North of Rio de Janeiro State. There was an increase of grain yield by reducing the spacing between the plants rows. The cultivation of the variety UENF-14 reducing the spacing between rows was advantageous for grain production, regardless of planting date.Keywords: Zea mays L., densities of plants, spacing between rows, sowing times.

scholarly journals A solitary rough-toothed dolphin (Steno bredanensis) in a superport area on northern Rio de Janeiro State, SE Brazil

2020 ◽  
Vol 20 (3) ◽  
Author(s):  
Ana Paula Madeira Di Beneditto ◽  
Salvatore Siciliano
Keyword(s):  
Mobile Phone ◽  
Rio De Janeiro ◽  
Internal Channel ◽  
Open Sea ◽  
Se Brazil ◽  
Steno Bredanensis ◽  
Solitary Behavior ◽  
Peculiar Behavior ◽  
Janeiro State

Abstract: The solitary behavior is an unusual and peculiar behavior reported in a few sociable dolphin species. This study presents the solitary behavior of an adult rough-toothed dolphin, Steno bredanensis, in the Açu Superport (21º49’S; 041º00’W), northern Rio de Janeiro State, SE Brazil. Data about the dolphin were obtained from mobile phone videos and reports by local professionals. Probably, the same dolphin was there since 2017-2018 up to April 2020 (at least). In general, the solitary dolphin swims next to supply boats navigating along the port internal channel, and it rarely continues towards open sea. The dolphin plays with buoys and containment barriers, rubs itself against hulls, and bow-rides and jumps. There is no report of people swimming with this solitary dolphin, touching it, or offering it food in the Açu Superport. Thus, there seems to be no threats to the animal’s integrity locally.

scholarly journals Tropical Viticulture Diagnosis in the North and Northwest Fluminense

2021 ◽  
Vol 13 (5) ◽  
pp. 171
Author(s):  
Jaomara Nascimento da Silva ◽  
Niraldo José Ponciano ◽  
Paulo Marcelo Souza ◽  
Claudio Luiz Melo de Souza ◽  
Leandro Hespanhol Viana ◽  
...  
Keyword(s):  
Rio De Janeiro ◽  
Skilled Labor ◽  
Average Area ◽  
Climatic Variations ◽  
The North ◽  
Wine Market ◽  
Production Areas ◽  
Janeiro State ◽  
Outer Environment

Viticulture has proved to be an alternative for farmers in the northen and northwestern Rio de Janeiro State; however, the activity is still very recent and requires the development of agronomic and managerial techniques. Therefore, the objective of this work was to diagnose the production areas and the characteristics inherent to the inner and outer environment of this farming enterprise. It was observed that the grape-growing farms predominate in an average area of 1 hectare, with productivity between 20 and 25 t/ha, with offer in the harvest and in the off-season. The inner points are stronger than the weak ones, and can be adjusted with the joint execution of the viticulturists allied to the opportunities, such as agrotourism and the diversification of available cultivars that allow a greater offer of the product and minimize the inherent threats observed, such as climatic variations and the shortage of skilled labor. These identified points may indicate competitiveness strategies for the wine market in the studied regions.

scholarly journals Anurofauna of an Atlantic Rainforest fragment and its surroundings in Northern Rio de Janeiro State, Brazil

2010 ◽  
Vol 70 (3 suppl) ◽  
pp. 871-877 ◽  
Author(s):  
M Almeida-Gomes ◽  
M Almeida-Santos ◽  
P Goyannes-Araújo ◽  
VNT Borges-Júnior ◽  
D Vrcibradic ◽  
...  
Keyword(s):  
Rio De Janeiro ◽  
Abundant Species ◽  
The State ◽  
Forest Fragments ◽  
Forest Fragment ◽  
The North ◽  
Surrounding Matrix ◽  
Plot Sampling ◽  
Northern Portion ◽  
Janeiro State

We carried out a study on the anurofaunal community from an Atlantic Forest fragment (Monte Verde mountains) and the surrounding area in Cambuci municipality, Rio de Janeiro State, Brazil, which constitutes one of the largest fragments remaining in the largely deforested landscape of the northern portion of the State. We combined three sampling methods: plot sampling, transects and pit-fall traps. We recorded twenty species of amphibians, of which only eleven were found within the forest fragment (and five of these also occurred in the surrounding matrix). Two of the species recorded in the present study (Crossodactylus sp. and Ischnocnema cf. parva) may represent undescribed taxa. Our records expand the distribution range of one species (Scinax trapicheiroi) to the north, and fill a geographic distribution gap for another one (Ischnocnema oea). The estimated overall density of frogs living in the leaf litter of the fragment (based on results of plot sampling) was 3.1 individuals/100 m², with Haddadus binotatus being the most abundant species (2.4 individuals/100 m²). Comparisons of our data with those of other studies suggest that anuran communities in forest fragments ca. 1,000 ha or smaller may be severely limited in their richness, and often include a large proportion of species tolerant to open areas, such as many hylids. Our results show the importance of increasing knowledge about the anurofaunal community of the northern portion of the State of Rio de Janeiro and preserve the forest remnants that still exist in the region.

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