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| Registros recuperados: 29 | |
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| Souza,Maria Verônica de; Fontes,Maurício Paulo Ferreira; Fernandes,Raphael Bragança Alves. |
| The objective of this research was to determine the concentration of heavy metals in the blood (Pb, Ni and Cd), serum (Cu and Zn) and hair (Pb, Ni, Cd, Cu and Zn) of horses raised in non-industrial and industrial areas (with steel mill), and to verify the possibility to use these data as indicators of environmental pollution. The samples were collected during summer and winter, aiming to verify animal contamination related to environment and season of the year. Copper and Zn contents determined in the serum and Cd and Ni contents obtained in the blood indicated no contamination effects of industries. For some animals, contents of Pb in the blood were higher than those considered acceptable for the species, but without relationship with industrialization... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bio-indicators; Environmental monitoring; Environmental quality; Horses; Pollution. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000200002 |
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| Fujimoto, Rodrigo Yudi; Embrapa Tabuleiros Costeiros; Neves, Mikaelle de Souza; Universidade Federal do Pará; Santos, Rudã Fernandes Brandão; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Cruz, Claudinei da; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Diniz, Daniel Guerreiro; Universidade Federal do Pará; Eiras, Jorge Costa; Universidade do Porto. |
| Fish commonly known as acaris or plecos are freshwater armored catfish economically important as a food resource and as ornamental fish. Most of these species are captured in the Amazon region. However, despite its economic importance, there is a lack of knowledge about their biological aspects. Thus, this study aimed to characterize and evaluate the histopathological aspects of important organs as gills, liver, integument and kidney of seven species of armored freshwater ornamental catfish fromGuamáRiver,Pará State,Brazil. All organs showed typical characteristics of organs of other teleosts. In some species, gills and liver showed slight histopathological changes: telangiectasis, edema and morphological changes related to the presence of parasites... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Environmental quality; Acaris; Histology Histologia Animal. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/22423 |
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| Martins,Isabela; Sanches,Barbara; Kaufmann,Philip Robert; Hughes,Robert M.; Santos,Gilmar Bastos; Molozzi,Joseline; Callisto,Marcos. |
| Reservoirs are artificial ecosystems with multiple functions having direct and indirect benefits to humans; however, they also cause ecological changes and influence the composition and structure of aquatic biota. Our objectives were to: (1) assess the environmental condition of Nova Ponte Reservoir, Minas Gerais state, southeastern Brazil; and (2) determine how the aquatic biota respond to disturbances. A total of 40 sites in the littoral zone of the reservoir were sampled to characterize physical and chemical habitat, land use, and benthic macroinvertebrate and fish assemblages. The predominant type of land cover near the reservoir was natural vegetation. A total of 29 fish species and 39 macroinvertebrate taxa were collected, including eight alien... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reservoirs; Water quality; Bioindicators; Physical habitat; Environmental quality. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000100103 |
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| Azevêdo,Evaldo de Lira; Barbosa,José Etham de Lucena; Vidigal,Teofânia Heloisa Dutra Amorim; Marques,João Carlos; Callisto,Marcos; Molozzi,Joseline. |
| The introduction of exotic mollusk species has resulted in loss of biodiversity in semi-arid neotropical aquatic ecosystems. This study aims to relate the presence and density of Corbicula largillierti species to human disturbance, providing data for the conservation and management of aquatic ecosystems. Specimens were collected at Epitácio Pessoa reservoir in December 2011 and June 2012, presenting densities of 20.96 and 62.89 individuals per square meter, respectively. Anthropic disturbance metrics were calculated considering the presence, type and intensity of disturbance in littoral, riparian and flood zones. The occurrence of C. largillierti was mainly associated to the variables total phosphorus (261.05 ± 342.22 µg/L) and total nitrogen (440.79 ±... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Corbiculidae; Anthropic disturbance; Environmental quality. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000100107 |
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| Correa-Ramirez,Marco; Pacheco,Wilberto; Ricaurte-Villota,Constanza. |
| ABSTRACT To counteract the spread of the Covid-19 pandemic disease, the Colombian government decreed a quarantine period from March 24 to July 1, 2020, which forced the cessation of tourist activities and the closure of the main tourist destinations of the Colombian Caribbean: Santa Marta, Cartagena, and San Andrés. During this period, a significant increase in the environmental quality of these coastal zones was perceived. To quantify environmental changes in the coastal zone, the variation in chlorophyll concentration and total suspended solids observed by the Sentinel-3 satellite mission, 30 days before and after the start of the quarantine, was analyzed. The results showed a decrease in the concentration of chlorophyll (> 20 %) and suspended solids... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal zone; Environmental indices; Remote sensing; Environmental quality; Covid-19.. |
| Ano: 2021 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000200161 |
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| Registros recuperados: 29 | |
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