Políticas públicas para sustentabilidade: o caso do projeto Ipirá na usina hidrelétrica de Tucuruí‐Pa

Araújo, Eduardo André Duarte de

doi:10.1016/j.rege.2016.09.004

Cited by 4 publications

(13 citation statements)

References 3 publications

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“…It is, however, considered one of the main pollutants that act on aquatic ecosystems (Islam and Tanaka, 2004), accounting for 60% to 80% of the waste found in marine environments (Derraik, 2002;Moore, 2008). Regarding freshwater ecosystems, information is still sarce (Pinheiro et al, 2017), a fact corroborated by Guzzetti et al (2018), Blettler and Wantzen (2019), Prokić et al (2019) and Pagano et al (2019). These authors reinforce the need for research on this subject, although there is already a rush of researchers to develop studies on it.…”

Section: Introductionmentioning

confidence: 92%

“…Analysis of the food habits of fish allows us to outline several processes of ecology involved in their diets (Ribeiro et al, 2014). Thus, the investigation of diet based on stomach content analysis provides consistent information about the trophic organization of fish communities as well as species biology, and is an important asset in the evaluation of interactive processes in aquatic environments (Bennemann et al, 2006). Studies regarding diet can also highlight and elucidate the impacts to which aquatic ecosystems are subjected, such as impoundment, effluent discharge, and channeling, among others.…”

Section: Introductionmentioning

confidence: 99%

“…These authors reinforce the need for research on this subject, although there is already a rush of researchers to develop studies on it. This is justified by the strong evidence that the ingestion of plastic by aquatic organisms occurs globally (Azevedo- Santos et al, 2019). Studies have recently been conducted that highlight the contamination of freshwater ecosystems by microplastics (Wagner et al, 2014); however, information is still limited, and little has been disseminated regarding these environments and their biota.…”

Section: Introductionmentioning

confidence: 99%

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Food ecology and presence of microplastic in the stomach content of neotropical fish in an urban river of the upper Paraná River Basin

Oliveira¹,

Corrêa²,

Smith³

2020

Rev. ambiente água

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Plastic is a useful material; but along with its benefits also come several disadvantages. One of these is the consequences of the improper discarding of plastic in the environment and its eventual fragmentation into microplastics. Plastic can reach rivers and affect their biota as microparticles from its degradation. The entry of plastic into the food chain occurs by the consumption of fish or other organisms. Furthermore, persistent organic pollutants can accumulate, and the consumption of materials containing plastic pollutants can cause several physiological problems in animals. Such pollutants can reach man when water or fish is consumed. There are numerous studies in the marine environment that show that microplastics significantly interfere with marine biota; but there are relatively few studies addressing this topic in freshwater environments. This work characterized the diet of the most abundant fish species in an urban river of the Upper Paraná Brazil Watershed, investigating the occurrence of microplastic. As much as the studied river suffers from urban river syndrome, a wide variety of food consumed by fish was found. The stomach content of 220 individuals belonging to fourteen species was analyzed. In the stomach content analysis, 16 types of food items were found, most of them autochthonous. The species analyzed were grouped into four trophic categories, with iliophage as dominant one. The presence of microplastics was found in 2% of the studied individuals, two individuals of the species Rhamdia quelen, one specimen of Hoplosternum littorale and one specimen of Astyanax fasciatus.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Food ecology and presence of microplastic in the stomach content of neotropical fish in an urban river of the upper Paraná River Basin

Oliveira¹,

Corrêa²,

Smith³

2020

Rev. ambiente água

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“…Água vol. 14 n. 4, e2382 -Taubaté 2019 2017 hectares of water, whose production capacity is able to supply approximately 269 thousand tons of fish per year to the market (Araújo, 2016).…”

Section: Introductionmentioning

confidence: 99%

Water quality in Ponte Pensa Aquaculture Park, Solteira Island Reservoir, SP, Brazil, where fish are cultivated under great-volume cage system

et al. 2019

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This study analyzes spatial and temporal variations in physical and chemical water variables due to the influence of fish culture in a cage system (20x20x3 m) in Ponte Pensa Aquaculture Park (Solteira Island Reservoir), before and after cage installation. Water samples were collected on a monthly basis in the subsurface of three sampling sites (August/2011 to July/2013): downstream from the farming site (S1), at the farming site (S2), and upstream from the farming site (S3) (n = 72). Water temperature, pH, dissolved oxygen, transparency, turbidity, electrical conductivity, ammonium ion and total phosphorus were assessed. The principal component analysis (PCA) was applied to joint analysis data. PCA results explained the 61% joint variability in data of the first two components. Fish farming in cages caused significant temporal changes, mainly in January 2013, as well as sudden spatial changes in water physical and chemical variables. Fish culture influenced the quality of the water; such influence was mainly indicated by variations in ammonium ions and in total phosphorus concentrations, which were confirmed through PCA application. PCA results showed two distinct temporal phases: Phase 1 -prior to fish-cage farming, when limnological conditions were characterized by the highest dissolved oxygen concentrations and by high temperatures; Phase 2 -post-production period, when limnological conditions were characterized by the highest total phosphorus and ammonium ion concentrations.Edna Ferreira Rosini et al. Influência da piscicultura em tanques-redes de grande volume na qualidade da água do Parque Aquícola Ponte Pensa, Reservatório IlhaSolteira, SP, Brasil RESUMO O objetivo do presente estudo é analisar a variação espacial e temporal das variáveis físicas e químicas da água na zona de influência da tilapicultura em tanques-redes (20x20x3 m) no parque aquícola Ponte Pensa (Reservatório de Ilha Solteira), abrangendo os períodos pré e pósintrodução da produção. Amostras da água foram obtidas mensalmente (agosto/2011 a julho/2013) na subsuperfície em três estações de amostragem: jusante da área de criação (S1), local de criação (S2) e a montante (S3) (n=72). Foram avaliadas a temperatura da água, pH, oxigênio dissolvido, transparência, turbidez, condutividade elétrica, íon amônio e fósforo total. Utilizou-se a PCA para análise conjunta dos dados. A PCA explicou 61% da variabilidade conjunta dos dados nos dois primeiros componentes. As atividades da piscicultura em tanquesrede provocaram alterações temporais, detectadas especialmente a partir de janeiro de 2013, e sutis alterações espaciais nas variáveis físicas e química da água. O íon amônio e o fósforo total foram as variáveis que mais indicaram a influência desta atividade na qualidade da água, confirmados pela PCA que demostrou duas fases temporais distintas: Fase 1-em que as condições limnológicas antes da produção de peixes em tanques-rede foram caracterizadas pelas maiores concentrações de oxigênio dissolvido e altas temperaturas; e Fase 2período pós-produção, q...

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“…The first aquaculture parks to become operational were located in Itaipu (PR), Castanhao (CE), Solteira Island (MS, MG and SP), Furnas (MG), Tres Marias (MG) and Tucurui (PA) reservoirs. These six reservoirs rely on 42 aquaculture parks that together comprise 28,500 hectares of water, whose production capacity is able to supply approximately 269 thousand tons of fish per year to the market (Araújo, 2016).…”

Section: Introductionmentioning

confidence: 99%

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2019

Rev. ambiente água

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With the goal of assessing possible impacts of fish farming in great-volume cage systems on the water quality of a reservoir, the authors provided abiotic data from 72 samples obtained before and after farming site implementation. The figure shows the principal components analysis results for seven limnological variables. The highest dissolved oxygen (OD) concentrations were observed before the fish farm became operational. During the post-production period, the highest phosphorous (PT) and ammonium (NH4) concentrations were observed as well as high conductivity and turbidity values. Authors concluded that fish farming in cage systems located in Solteira Island Reservoir, Brazil, caused significant temporal and sudden spatial changes in water physical and chemical variables. Source: ROSINI, E. F. et al. Water quality in Ponte Pensa Aquaculture Park, Solteira Island Reservoir, SP, Brazil, where fish are cultivated under greatvolume cage system.

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Políticas públicas para sustentabilidade: o caso do projeto Ipirá na usina hidrelétrica de Tucuruí‐Pa

Cited by 4 publications

References 3 publications

Food ecology and presence of microplastic in the stomach content of neotropical fish in an urban river of the upper Paraná River Basin

Food ecology and presence of microplastic in the stomach content of neotropical fish in an urban river of the upper Paraná River Basin

Water quality in Ponte Pensa Aquaculture Park, Solteira Island Reservoir, SP, Brazil, where fish are cultivated under great-volume cage system

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