scholarly journals Levantamento das cianobactérias psâmicas em sedimentos superficiais marginais da Lagoa Azul, Arraial do Cabo, Rio de Janeiro

2008 ◽  
Vol 31 (1) ◽  
pp. 24-29
Author(s):  
Loreine Hermida da Silva e Silva ◽  
Anderson Andrade Cavalcanti Iespa ◽  
Cynthia Moreira Damazio Iespa ◽  
Teresa Cristina Lopes Medeiros Faruolo
Keyword(s):  
Elevated Temperature ◽  
Coastal Area ◽  
Rio De Janeiro ◽  
Surface Sediments ◽  
High Salinity ◽  
Harsh Environment ◽  
The City ◽  
Plastic Containers ◽  
Opaque Plastic ◽  
Janeiro State

The coastal area of the Rio de Janeiro State presents a series of lagoons, dune fields and strand plains, which are the result of the paleogeographical evolution during Neogene. The lagoa Azul is situated at 22º56'52"S and 42º04'62"W in the Arraial do Cabo, located about 160 km far the city of Rio de Janeiro. It is a natural hypersaline coastal aquatic body which, parallel to Atlantic Ocean. The present work focused on the identification of psammic cyanobacteria in the surface sediments of the lagoa Azul. The samples were obtained by using plastic tubes and were later aconditiones in opaque plastic containers and conserved in a 4% solution of formaldehyde. With the material obtained, permanent slides were prepared so as to characterize them phycologically. Qualitative analysis showed the presence of 14 species and the occurrence of the families Chroococcaceae Nägeli 1849 (5 sp.), Phormidiaceae Anagnostidis & Komárek 1988 (4 sp.), Synechococcaceae Komárek & Anagnostidis 1995 (2 sp.), Nostocaceae Kützing 1843 (1 sp.), Oscillatoriaceae Gomont 1892 (1 sp.) and Pseudanabaenaceae Anagnostidis & Komárek 1988 (1 sp.). The incidence of these species is also recorded in other lagoons (Araruama, Pernambuco, Pitanguinha and Vermelha) in the northeast of Rio de Janeiro coast, such as the frequency of cyanobacteria is justified by the harsh environment, without predation, with high salinity, elevated temperature and low concentration of oxygen

scholarly journals Descriptions of three new species of jumping-spiders, genus Arnoliseus (Araneae, Salticidae), from Rio de Janeiro state, Brazil, with comments on their genital morphology and a key to species

2020 ◽  
Vol 96 (1) ◽  
pp. 73-90
Author(s):  
Renner Luiz Cerqueira Baptista ◽  
Pedro de Souza Castanheira ◽  
Gabriel Assunção Oliveira ◽  
André Wanderley do Prado
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Rio De Janeiro ◽  
Genital Morphology ◽  
Key To Species ◽  
Jumping Spider ◽  
Jumping Spiders ◽  
Three New Species ◽  
The City ◽  
Janeiro State

New data on the jumping-spider genus Arnoliseus are presented. Three new species from the Atlantic Forest in Rio de Janeiro state are described, based on both sexes: Arnoliseus cariocasp. nov. from the city of Rio de Janeiro, and Arnoliseus hastatussp. nov. and Arnoliseus falcatussp. nov. from the municipality of Cachoeiras de Macacu. The genus’ genital morphology is discussed in detail and new English terminology for their structures is created. An identification key for all Arnoliseus species is given.

scholarly journals Epidemiological profile of farmworkers from the state of Rio de Janeiro

2019 ◽  
Vol 72 (suppl 1) ◽  
pp. 122-128 ◽  
Author(s):  
Riva Schumacker Brust ◽  
Luíza Pereira Maia de Oliveira ◽  
Aline Cerqueira Santos Santana da Silva ◽  
Isabel Cristina Ribeiro Regazzi ◽  
Gilberto Santos de Aguiar ◽  
...  
Keyword(s):  
Elementary Education ◽  
Regional Differences ◽  
Rio De Janeiro ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Occupational Risks ◽  
The Family ◽  
Epidemiological Profile ◽  
The City ◽  
Janeiro State

ABSTRACT Objective: to describe the epidemiological profile of farmworkers exposed to pesticides in the city of Casimiro de Abreu, Rio de Janeiro State. Method: cross-sectional study, conducted through a questionnaire. The collected data were typed in spreadsheet and processed in the R software. Results: the predominance of female participants, between 40 and 60 years old, married, with some elementary education was observed. Furthermore, the family labor and the production for their own consumption and trade prevail. Herbicide is the most widely used pesticide. Most informants present poisoning symptoms, as they do not use Personal Protective Equipment nor sunscreen. Breast cancer is the most frequent in families; among the participants, 31% had hypertension and 6.4% diabetes. Conclusion: a population vulnerable to environmental and occupational risks, specially the middle-aged group and women, sets up a profile marked by regional differences.

Environmental Effects of Aluminum Used in Water Treatment Plants of Rio de Janeiro State, Brazil

1994 ◽  
Vol 29 (4) ◽  
pp. 571-580
Author(s):  
Jose M. Azcue ◽  
Olaf Malam ◽  
Wolfgang G. Pfeiffer
Keyword(s):  
Water Treatment ◽  
Rio De Janeiro ◽  
River System ◽  
Average Concentration ◽  
World Health ◽  
Water Treatment Plants ◽  
Alum Sludge ◽  
Health Organization ◽  
The City ◽  
Janeiro State

Abstract The effect of the extended use of alum on the concentration of aluminum in water treatment was investigated. Water from the Paraiba do Sul-Guandu River (PSR-GR) system, collected after conventional treatment, was analyzed from the six water treatment plants (WTPs). One of the WTPs, the Guandu WTP, supplies water to the city of Rio de Janeiro (11 million inhabitants) with a flow of 40 m3/s. The concentrations of aluminum found were near and sometimes over the values recommended by the World Health Organization (200 µg/L), with an average concentration of 306 µg/L, reaching seasonally maximum values of 877 µg/L at the WTP and 2,100 µg/L in household taps. The discharge of alum sludge back to the river system is the predominant pathway in the aluminum cycling in the study area, followed by sedimentation and enhanced availability to the biota.

scholarly journals Mapeamento geológico-geotécnico preliminar, utilizando geoprocessamento, no município de Campos dos Goytacazes, Estado do Rio de Janeiro

2008 ◽  
Vol 31 (1) ◽  
pp. 50-64
Author(s):  
Aline Nogueira Costa ◽  
Helena Polivanov ◽  
Maria Da Glória Alves
Keyword(s):  
Physical Environment ◽  
Rio De Janeiro ◽  
Data Bank ◽  
Environmental Problems ◽  
Future Generations ◽  
North Coast ◽  
The North ◽  
Field Information ◽  
The City ◽  
Janeiro State

Campos dos Goytacazes County is located on the north coast of Rio de Janeiro State. The city of Campos dos Goytacazes was developed on a flooding plain and due to the fragility of the physical environment; the city has been suffering serious environmental problems. The methodology used base in acquisition of data bank, remote sensoring techniques, Field Information and application of SIG ArcGis9. In a first step, the themes geology, pedology and geomorphology units was overlaying, where could obtain a Geological-Geotechnical Units Map, with lowed and elevated units, the which had been defined in accordance with its characteristics. The purpose of this map, as well as the objective of the work is to plan the territory for the future generations

scholarly journals Chironomid larvae inhabiting bromeliad phytotelmata in a fragment of the Atlantic Rainforest in Rio de Janeiro State

2010 ◽  
Vol 70 (3) ◽  
pp. 587-592 ◽  
Author(s):  
VM. Sodré ◽  
O. Rocha ◽  
MC. Messias
Keyword(s):  
Rain Forest ◽  
Rio De Janeiro ◽  
Metropolitan Areas ◽  
First Record ◽  
Atlantic Rain Forest ◽  
Chironomid Larvae ◽  
Numerical Abundance ◽  
The City ◽  
Janeiro State ◽  
Janeiro City

A study of chironomids (Diptera, Chironomidae) occurring in phytotelmata of Bromeliaceae was carried out in a fragment of the Atlantic Rain Forest in an area of the city of Magé, Pau Grande, one of the metropolitan areas of Rio de Janeiro City, during a period of 13 months between September 2006 and September 2007. Eight samplings were performed at intervals of 1 ½ months and the content of the phytotelmata of the bromeliad species Neoregelia concentrica (Vellozo) L.B. Smith, 1934 and Aechmea nudicaulis (Linnaeus) Grisebach, 1864, were examined. A taxonomical inventory and evaluation of the numerical abundance of Chironomidae larvae were performed in 50 specimens of the bromeliads, being 13 individuals of N. concentrica and 37 of A. nudicaulis. Three taxa of Chironomidae belonging to three distinct subfamilies were recorded: Polypedilum sp., Orthocladiinae genus A and Monopelopia sp. A total of 293 individuals of Chironomidae, were recorded, being 9 Polypedilum sp., 233 Orthocladiinae genus A, and 51 Monopelopia sp., the latter representing the first record of Monopelopia in phytotelmata in Rio de Janeiro State. Considering all samples, a mean density of 3.32 ± 2.62 chironomid larvae per phytotelmata was recorded. There was a positive relationship between the chironomid abundance and both precipitation and the volume of water in the phytotelmata. Apparently there is no preference by the chironomids regarding the colonistion of the bromeliad species.

scholarly journals Isotopic niche of the catfishes Bagre bagre and Genidens barbus in a coastal area of south-eastern Brazil

2018 ◽  
Vol 18 (3) ◽  
Author(s):  
Ana Paula Madeira Di Beneditto ◽  
Maria Thereza Manhães Tavares ◽  
Leandro Rabello Monteiro
Keyword(s):  
Coastal Area ◽  
Rio De Janeiro ◽  
Niche Overlap ◽  
Isotopic Niche ◽  
Food Items ◽  
South Eastern ◽  
Eastern Brazil ◽  
Xiphopenaeus Kroyeri ◽  
The Mean ◽  
Janeiro State

Abstract: The isotopic niche of Bagre bagre and Genidens barbus target of commercial fisheries in a marine coastal area from northern Rio de Janeiro State (~21ºS), south-eastern Brazil was compared to evaluate the feeding assimilation and the trophic relationship. The mean isotopic values of the catfishes and their food items in the δ13C-δ15N space were coherent with their respective trophic positions. The relative contributions of the food items highlighted the shrimp Xiphopenaeus kroyeri as the most assimilated item in the diet of B. bagre, while for G. barbus the model highlighted the fish Porichthys porosissimus. The absence of niche overlap together with the trophic evenness point to a reduced feeding overlap between B. bagre and G. barbus in northern Rio de Janeiro State.

scholarly journals Spatial distribution of pollen grains and spores in surface sediments of Guanabara Bay, Rio de Janeiro, Brazil

2012 ◽  
Vol 84 (3) ◽  
pp. 627-644 ◽  
Author(s):  
Cintia F. Barreto ◽  
Claudia G. Vilela ◽  
José A. Baptista-Neto ◽  
Ortrud M. Barth
Keyword(s):  
Rio De Janeiro ◽  
Surface Sediments ◽  
Pollen Grains ◽  
Source Area ◽  
Guanabara Bay ◽  
Differential Distribution ◽  
Hydrographic Basin ◽  
River Transport ◽  
Pollen Types ◽  
Janeiro State

Aiming to investigate the deposition of pollen grains and spores in Guanabara Bay, Rio de Janeiro State, 61 surface sediment samples were analyzed. The results showed that the current deposition of palynomorphs in surface sediments of Guanabara Bay represents the regional vegetation of this hydrographic basin. The differential distribution of palynomorphs followed a pattern influenced by bathymetry, tidal currents speed, discharge of numerous rivers, and by human activity. The dominance of representatives of Field Vegetation reflects the changes of the original flora caused by intense human activities in the region. The continued presence and richness of pollen types of rain forest in the samples indicates that their source area might be the vegetation from riparian border of rivers in the western sector of the Bay, where the mangrove vegetation is being preserved. The large amount of damaged palynomorphs may be related to abrasion that occurs during river transport, indicating removal or reworking from their areas of origin.

scholarly journals The paradox of caught-in-the-act surveillance scenes: dilemmas of police video surveillance in Rio de Janeiro

2012 ◽  
Vol 10 (1) ◽  
pp. 51-64 ◽  
Author(s):  
Bruno de Vasconcelos Cardoso
Keyword(s):  
Video Surveillance ◽  
Rio De Janeiro ◽  
Field Research ◽  
Public Spaces ◽  
Control Center ◽  
And Control ◽  
The Military ◽  
The City ◽  
Different Levels ◽  
Janeiro State

This paper reports some of the issues raised by field research conducted in the official video surveillance system in public spaces that is operated by the Military Police on behalf of the Rio de Janeiro State Department of Public Security. The research was conducted at the Command and Control Center (CCC), where the images from all the cameras in the police battalions are brought together and at the police batallion at Copacabana (19thBPM), the first area at the city where surveillance cameras were installed. This system is treated as a sociotechnical network, formed by the interaction of individuals and technological elements, further increasing the importance of an observation from two different levels of this network. Special attention is drawed on what I called “the paradox of the caught in-the-act surveillance scenes”, dilemma emerged around the conflict between the work of surveillance and the aesthetics of surveillance, and also on a main videosurveillance problem: (human and/or technical) overdetermination.

scholarly journals Poisoning by Megathyrsus maximus (Sin. Panicum maximum) cv. Colonião in horses in the state of Rio de Janeiro

2021 ◽  
Vol 41 ◽  
Author(s):  
Ticiana N. França ◽  
Stephni M. Carletti ◽  
Juliana F. Rocha ◽  
Bartolomeu B.N. Santos ◽  
Mariana C. Oliveira ◽  
...  
Keyword(s):  
Rio De Janeiro ◽  
Clinical Signs ◽  
Intestinal Wall ◽  
Panicum Maximum ◽  
Prophylactic Measure ◽  
Climate Conditions ◽  
The North ◽  
The City ◽  
Submucosal Edema ◽  
Janeiro State

ABSTRACT: Colic outbreaks in horses have been associated with the grazing of several Megathyrsus maximus (Sin. Panicum maximum) cultivars in the North and Central-West regions of Brazil. In this paper, we report a horse colic outbreak in the Southeast region of Brazil caused by ingestion of the “Colonião” cultivar of M. maximus, which has not previously been considered as toxic. The five affected horses belonged to the Veterinary Platoon based at the Central Ammunition Deposit of the Brazilian Army in the city of Paracambi, Rio de Janeiro state, Brazil. The horses had access to treated water and commercial concentrate, and were located in a field of M. maximus at the time of the outbreak. All horses exhibited clinical signs of colic and bloat, and three of them died. The extend of the clinical course ranged from four to five days in the three animals that died; in the two animals that recovered from the colic episodes, the extend of the clinical courses were 10 and 15 days. Necropsy findings revealed intestinal and gastric bloating and hemorrhages involving the intestinal wall. Light microscopy showed moderate diffuse lymphoplasmacytic and eosinophilic enteritis with multifocal erosions, in addition to submucosal edema associated with multifocal vasculitis. The pathogenesis of colic caused by M. maximus ingestion in horses has not yet been elucidated. Some authors have suggested that higher starch concentrations in M. maximus during the rainy season may be responsible for the toxicity of this plant. However, the findings of this study do not support this hypothesis. As a prophylactic measure, it is suggested that horses do not graze exclusively M. maximus at the beginning of rainy periods, in which regrowth of this grass occurs. In Brazil, outbreaks of horse colic associated with ingestion of varieties of Megathyrsus can also occur outside the North and Midwest regions, under specific climate conditions.

scholarly journals Cianobactérias Psâmicas Marinhas da Praia das Flexeiras, Estado do Rio de Janeiro, Sudeste do Brasil

2011 ◽  
Vol 34 (1) ◽  
pp. 46-51
Author(s):  
Loreine Hermida da Silva e Silva ◽  
Siglia Andressa Pinto Monteiro do Nascimento Alves ◽  
Fernanda Campante Magina ◽  
Sinda Beatriz Vianna Carvalhal Gomes ◽  
Ricardo Da Silva Cardoso ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Grain Size ◽  
Rio De Janeiro ◽  
Microbial Mats ◽  
Chlorophyll Concentration ◽  
Fine Sand ◽  
Internal Diameter ◽  
Southern Coast ◽  
Opaque Plastic ◽  
Janeiro State

Flexeiras beach (22º56' S, 43º53'W) is located at Ilha de Itacuruçá (Itacuruçá Island) in Sepetiba Bay, on the southern coast of Rio de Janeiro State. It is a protected beach in relation to wave exposition, due to its geographic position, which faces the opening Bay. This work aims at contributing with the knowledge of abundance of psamic cyanobacteria species, which compound Brazilian sea-communities. It had occurred monthly collections, from December 2006 to January 2008, during syzygy's low tide. Samples were obtained through PVC pipes, measuring 1,5 cm of internal diameter and 6 cm length. They were also fractionated into 3 segments, 2 cm distant. After that, samples had been places in opaque plastic flasks referring to each segment and preserved in a 4% formol aqueous solution. Flexeiras beach has sediments made by sand, presenting grain size varying from 0,22 to 0,32 mm (fine sand). Estimated average declivity was of 1/21,4m (À 4,07) and 1/28,7m (À 15,8), respectively, for two transects. The water chlorophyll concentration in interdital areas presented an average of 3,03 g/L (À2,29) and total Phosphorus presented an average of 0,12 mg/L (À 0,04). Average salinity was of 35%, don't having considerable oscillations during the months studied. The qualitative analysis has detected the presence of 12 psamic cyanobacteria tax. Family Chroococcaceae Nägeli 1849 is the most frequent, responsible for 33,4% of encountered species. The geological importance of psamic cyanobacteria is intrinsically associated to the fact of them composing the first unconsolidated substract for microbial mats' formation, essential structures in this group preservation.

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