scholarly journals Assessing the histological changes in fish gills as environmental bioindicators in Paraty and Sepetiba bays in Rio de Janeiro, Brazil

2020 ◽  
Vol 48 (4) ◽  
pp. 590-601
Author(s):  
Thatiana Luiza Assis de Brito Carvalho ◽  
Aparecida Alves Do Nascimento ◽  
Caio Fábio Dos Santos Gonçalves ◽  
Marcos Antônio José Dos Santos ◽  
Armando Sales
Keyword(s):  
Environmental Impact ◽  
Fish Species ◽  
Rio De Janeiro ◽  
Health Conditions ◽  
Gill Epithelium ◽  
Monitoring Tool ◽  
Histological Changes ◽  
Sepetiba Bay ◽  
Conservation Condition ◽  
Micropogonias Furnieri

The use of fish species uses as bioindicators is an important environmental monitoring tool. Histological biomarkers are adopted to assess the health conditions of different organisms and to indicate an environmental hazard. Histology can be applied as an effective method to analyze the effects of pollutants and other stressors. Accordingly, histological changes in the gill epithelium were analyzed to assess the adoption of fish species Menticirrhus americanus (Linnaeus, 1758) and Micropogonias furnieri (Desmarest, 1823) as a bioindicator to measure environmental quality in Paraty and Sepetiba bays, in Rio de Janeiro. A random sample of 58 fish was collected from the assessed bays. We found Paraty Bay to be in good conservation condition, whereas Sepetiba Bay is contaminated. The fish species collected from Sepetiba Bay showed lesions such as epithelial lifting, aneurysm, and necrosis in the gills; thus, it was possible to suggest that histological biomarkers be used bioindicators to measure the environmental impact in these bays.

scholarly journals HOLOCENE CLOSURE OF A BARRIER BEACH IN SEPETIBA BAY AND ITS ENVIRONMENTAL IMPACT (RIO DE JANEIRO, BRAZIL)

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Anita Fernandes Souza Pinto ◽  
Maria Virgínia Alves Martins ◽  
Maria Clara Machado da Fonseca ◽  
Egberto Pereira ◽  
Denise Lara Terroso ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Rio De Janeiro ◽  
Barrier Beach ◽  
Sepetiba Bay

Sewage and Solids Disposal: Are Processes Such as Ocean Disposal Proper? The Case of Rio de Janeiro (Brazil)

1990 ◽  
Vol 22 (12) ◽  
pp. 33-43 ◽  
Author(s):  
Eduardo P. Jordão ◽  
Jorge R. Leitão
Keyword(s):  
Environmental Impact ◽  
Rio De Janeiro ◽  
Marine Ecosystem ◽  
Ecological Impact ◽  
Monitoring Program ◽  
Quality Criteria ◽  
Water Quality Criteria ◽  
Federal Regulations ◽  
Concrete Pipe ◽  
Ocean Disposal

In developing countries, as is the case of Brazil, solutions proposed for sewage and sludge treatment and disposal must meet not only public environmental demands and obey proper legal regulations, but also take into account the availability of funds for new investments and operation of existing systems. Brazilian federal regulations allow ocean disposal of sewage and solids, according to certain water quality criteria and specific standards. On the other hand, federal regulations require that submarine outfalls must be studied by means of an Environmental Impact Assessment, and that a Report on the Environmental Impact be produced. Such studies must demonstrate that the site will be protected and that ocean disposal will not impair the environment and the beneficial uses, such as fisihing, recreation, navigation, or propagation of marine life. The State of Rio de Janeiro has monitored its Ipanema Submarine Outfall since 1974, one year prior to going into operation. Present flow is 6m3/sec (140 mgd) of bar-screened domestic sewage. The submarine outfall is a 2.4m diameter concrete pipe, 4.3 km (2.7mi) long, and discharges at a depth of 27m (89ft). The paper presents and discusses existing regulations and data on the seawater monitoring program which is still in practice, having produced more than 90,000 analyses. Discussion covers the period 1974 - 1988, and shows that no adverse ecological impact has been noted on the marine ecosystem.

The Environmental Impact on Human Wellbeing: A Case Study on Residences in Quarry Area

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Emma Marinie Ahmad Zawawi ◽  
◽  
Wan Hasmirah Wan Ibrahim ◽  
Keyword(s):  
Quality Of Life ◽  
Environmental Impact ◽  
Biological Diversity ◽  
Local Population ◽  
Health Conditions ◽  
Human Wellbeing ◽  
The People ◽  
New Development

An Environmental Impact Assessment (EIA) is compulsory in all types of new development. EIA is important to ensure that biological diversity is maintained and that development will not have any affect on the people and other species in that area. The aim of this study is to investigate the environmental impact on human wellbeing in the vicinity of quarrying. It will increase the awareness of the local population of the important factors that might affect the quality of their lives. A set of questionnaires was distributed to the community at Bandar Saujana Putra and Taman Kajang Perdana, in Selangor. A total of 60 residents were involved in the study. The results reveal that the community was concerned about health conditions and safety. However, there is still a lack of strategies to mitigate the problem. This study provides suggestions for mitigation that could be considered by the residents to reduce the effect of poor air quality caused by incorrect control and monitoring of activities in the area. It is anticipated that this study could assist both residents and authorities in improving the quality of the air as well as the residents’ quality of life.

scholarly journals RELATIVE SEA LEVEL RISE EFFECTS AT THE MARAMBAIA BARRIER ISLAND AND GUARATIBA MANGROVE: SEPETIBA BAY (SE BRAZIL)

2019 ◽  
Vol 4 (3) ◽  
pp. 249-262
Author(s):  
Carolina Santana da Costa Santos ◽  
Fábio Ferreira Dias ◽  
Barbara Franz ◽  
Paulo Roberto Alves dos Santos ◽  
Thalita Da Fonseca Rodrigues ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Rio De Janeiro ◽  
Central Area ◽  
Barrier Island ◽  
Aerial Images ◽  
Relative Sea Level ◽  
Sepetiba Bay ◽  
Se Brazil ◽  
Relative Sea Level Rise

Human activities change coastal ecosystems, but they are also altered by natural causes, such as the relative sea level rise. This work analyzes the influence of changes of the relative sea level at Guaratiba mangrove and Marambaia barrier island, in Sepetiba Bay, Rio de Janeiro State (SE, Brazil), based on photo interpretation. The objective of this study is to analyze the morphodynamics of Marambaia coastal sand barrier, estimating the rate of the shoreline change by mapping the vegetation line position, variations of dune extension and overwash processes. The Marambaia barrier island and Guaratiba mangrove are highly vulnerable to sea level rise. The mangrove is suffering pressure from the relative sea level rising and urbanization. The mangrove migration towards the continent is evident through the analyses of aerial images from 1976 to 2005. If the current erosion process continues in the Marambaia barrier island, a disruption in the central area of the sand bank should occur, which will create a new communication between Sepetiba Bay and the ocean. This break will change the present internal circulation of the bay and modify the ecosystems. Also considering the anthropic pressure, if the Marambaia barrier island breaks, the mangrove area will be reduced or disappear. The sea level rise and the sedimentation rate lowering will result in the migration and marine transgression in Marambaia barrier island and Guaratiba mangrove. EFEITOS DO AUMENTO RELATIVO DO NÍVEL DO MAR NA ILHA BARREIRA DE MARAMBAIA E DO MANGUEZAL DE GUARATIBA: BAÍA DE SEPETIBA (SE BRASIL) ResumoAs atividades humanas alteram os ecossistemas costeiros, mas estes também são alterados por causas naturais, como por exemplo, o aumento relativo do nível do mar. Este trabalho analisa a influência das mudanças relativas do nível do mar no manguezal de Guaratiba e na ilha barreira de Marambaia, na Baía de Sepetiba, localizada no Estado do Rio de Janeiro (SE, Brasil), com base na fotointerpretação. O objetivo deste estudo é analisar a morfodinâmica da barreira costeira de areia de Marambaia, estimando a taxa de variação da linha de costa, mapeando a posição da linha de vegetação, variações da extensão dunar e os processos de overwash. A ilha barreira de Marambaia e o manguezal de Guaratiba são altamente vulneráveis à elevação do nível do mar. O manguezal está sofrendo pressão do aumento relativo do nível do mar e da urbanização. A migração do manguezal para o continente é evidente através da análise de imagens aéreas de 1976 a 2005. Se continuar o processo atual de erosão na ilha barreira de Marambaia, deverá ocorrer uma ruptura na área central do banco de areia, o que dará origem a uma nova comunicação entre a Baía de Sepetiba e a oceano. Essa quebra vai mudar a atual circulação interna da baía e modificar os ecossistemas. Se a ilha barreira de Marambaia se romper, a área de manguezal irá ser reduzida ou desaparecerá. Este efeito é tanto mais provável se for considerada também a pressão antrópica. A elevação do nível do mar e a redução da taxa de sedimentação resultarão na migração e transgressão marinha na barreira de Marambaia e no mangue de Guaratiba. Palavras-chave: Ilha da Barreira. Manguezal. Elevação do nível relativo do mar. Erosão costeira. Galgamento oceânico.

scholarly journals Terrestrial invertebrates in environmental assessments: A decade of environmental impact studies in the influence area of the Atlantic Rainforest in Rio de Janeiro State, Brazil

2019 ◽  
Vol 6 (14) ◽  
pp. 1039-1050
Author(s):  
Rafael Alves Esteves ◽  
Ronilson José da Paz
Keyword(s):  
Environmental Impact ◽  
Biodiversity Conservation ◽  
Rio De Janeiro ◽  
Atlantic Rainforest ◽  
Conservation Strategies ◽  
Public Authorities ◽  
Animal Group ◽  
Terrestrial Invertebrates ◽  
Influence Area ◽  
Janeiro State

Invertebrates constitute a megadiverse animal group and abundant in virtually every terrestrial and aquatic ecosystem, performing functions and providing services indispensable to the environment. In this paper, we evaluated how terrestrial invertebrates were treated in the Environmental Impact Assessments submitted to the environmental agency in Rio de Janeiro, state fully inserted at Atlantic Rainforest biome. We analyzed environmental studies developed by companies with new industrial projects presenting potential environmental impact in the period of 2008 to 2018. Only ten (14%) studies considered terrestrial invertebrates in the biotic diagnostic assessments of fauna. Arthropoda was the only one Phylum considered as terrestrial invertebrates in the studies analyzed, with Class Insecta present in all of them, and Arachnida present in two studies. The insects of the Orders Diptera, Hymenoptera, Coleoptera, Lepidopetra, Hemipetra, Orthopetra and Odonata were the most frequent in the studies. The lack of interest in the conservation of terrestrial invertebrates demonstrates the fragility of the public authorities in issues related to biodiversity conservation strategies of these animals and exposes the urgent need for investment in the formation of human resources specialized in biodiversity conservation.

scholarly journals Metal bioavailability and distribution in the fish community in a tropical estuary, Sepetiba Bay, Rio de Janeiro, Brazil

2021 ◽  
Vol 35 (1) ◽  
pp. 17-38
Author(s):  
Vinícius Kütter ◽  
Vanessa Moreira ◽  
Mateus Kütter ◽  
Emmanoel Silva-Filho ◽  
Eduardo Marques ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
Fish Species ◽  
Fish Muscle ◽  
Human Consumption ◽  
Brazilian Coast ◽  
Industrial Emissions ◽  
Sepetiba Bay ◽  
Suspended Particulate ◽  
Citharichthys Spilopterus

Sepetiba Bay has a wealth of fish species (total 148) as well as a vast area of mangroves and numerous rocky islands, which are important sites of reproduction for marine life. This peculiar environment of the Brazilian coast hosts one of the most important industrial centres of south-eastern Brazil. This site has been impacted for decades by the release of industrial emissions and effluents with high metal loads by the steel industry. The ranges of metal concentrations in fish muscle from the species Micropogonias furnieri, Genidens genidens, Cathorops spixii, Notarius grandicassis, Diapterus rhombeus, Selene vomer, Prionotus punctatus, Citharichthys spilopterus, Achirus lineatus, Trinectes paulistanus, Symphurus tessellatus and Hypanus guttatus were measured (Al: 0.02-555.9 µg g-1 d.w., As: 0.0002-20.1 µg g-1 d.w., Cd: <0.0002-0.2 µg g-1 d.w., Cu: 0.2-2.3 µg g-1 d.w., Fe: <0.02-244.9 µg g-1 d.w., Zn: 0.5-227.3 µg g-1 d.w. and Pb: <0.001-1.3 µg g-1 d.w.). The Kruskal-Wallis test revealed significant differences (p<0.05) in the As, Cu, Fe, Pb and Zn contents among fish species. The monitoring of suspended particulate matter during dredging operation revealed the mean metal values for Al (6059±6268 µg g-1), Cd (0.2±0.5 µg g-1), Cu (29±29 µg g-1), Zn (332±892 µg g-1), and Pb (52±70 µg g-1). The results of bioaccumulation in fish calculated from the bioavailable sediment fractions and suspended particulate matter showed lower values than those in fish muscle. Arsenic was found at levels above the maximum limit for human consumption according to Brazilian legislation. However, the estimated probability and risk of metal intake via fish consumption showed that the consumption of all species presented low risk.

Benthic ciliates from Sepetiba Bay (Rio de Janeiro, Brazil) with description of Pseudokeronopsis sepetibensis n. sp. (Spirotrichea: Urostylida)

Zootaxa ◽  
2004 ◽  
Vol 587 (1) ◽  
pp. 1 ◽  
Author(s):  
Rodrigo C. Wanick ◽  
Inácio D.D. Silva-Neto
Keyword(s):  
Rio De Janeiro ◽  
Unique Combination ◽  
Constant Number ◽  
The South ◽  
Sepetiba Bay ◽  
Oral Region ◽  
Water And Sediment ◽  
Contractile Vacuoles ◽  
Janeiro State ◽  
Benthic Ciliates

During the period from 2001 to 2002, we examined samples of water and sediment from five stations in Sepetiba Bay, located in the south region of Rio de Janeiro state, Brazil. We identified 32 species of ciliate protists representing seven classes: Karyorelictea, Heterotrichea, Spirotrichea, Litostomatea, Phyllopharyngea, Protostomatea and Oligohymenophorea. Among the Spirotrichea, we discovered Pseudokeronopsis sepetibensis n. sp., characterized by a unique combination of three features: 3 contractile vacuoles, an inconspicuous mid-ventral row, and 4 5 frontoterminal cirri. It showed yellow-greenish coloration and elongated body outline (100 140 m x 20 26 m). On average, there were 44 adoral membranelles, 50 left marginal cirri, 48 right marginal cirri and 41 mid-ventral cirri disposed in a straight row past the level of the oral region. Other features include 4 frontoterminal cirri and a constant number of 3 transverse cirri; 8 frontal cirri (4 anterior and 4 posterior arranged as an atypical bicorone).

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