|
|
|
| Registros recuperados: 56 | |
|
| |
|
| |
|
|
| VECHIA,J.F. DELLA; CRUZ,C.; SILVA,A.F.; CERVEIRAJR.,W.R.; GARLICH,N.. |
| ABSTRACT The objective of this study was to evaluate the feasibility of the use of macrophytes Lemna minor and Azolla caroliniana as biomarkers of exposure (acute toxicity) for atrazine, bentazon + imazamox and clomazone, insecticide alpha cypermethrin + teflubenzuron and fungicides pyraclostrobin and mixture pyraclostrobin + epoxiconazole, as well as the risk for environmental intoxication. For this purpose, four plants of L. minor and five of A. caroliniana were selected in a 50 mL Hoagland medium. For both plants, the following concentrations were used: 0.10; 1.07; 3.44; 11.16; 36.40 and 118.0 mg L-1 of each test product and a control with three replicates. The results of this study demonstrated higher sensitivity of L. minor to the tested pesticides,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioindication; Aquatic plants; Acute toxicity; Environmental monitoring; Pesticide. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000300597 |
| |
|
| |
|
|
| Davidson,I. |
| The large amounts of feathers produced by the poultry industry, that is considered as a waste was explored for possible uses in various industries, such as meals for animals, biofuels, biodegradable plastic materials, combating water pollution and more. That review mentions these uses, but concentrate on the utilization of feathers for the diagnosis of viral infections and for monitoring vaccine viruses in chickens after vaccination. The viral diseases in which diagnosis using nucleic acids extracted from the feather shafts was described are, Marek's disease virus, circoviruses, chicken anemia virus, fowlpox virus, avian retroviruses, avian influenza virus and infectious laryngotracheitis virus. In two cases, of Marek's disease virus and of infectious... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avian influenza virus; Avian retroviruses; Infectious laryngotracheitis virus; Circoviruses; Chicken; Chicken anemia virus; Diagnosis of avian viral diseases; Environmental monitoring; Feathers; Fowlpox virus; Marek's disease virus; Malformation of chick feathering; Stability of DNA viruses; Usage of feathers. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300001 |
| |
|
| |
|
| |
|
|
| 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 |
| |
|
| |
|
|
| SHIMANO,Yulie; CARDOSO,Mylena; JUEN,Leandro. |
| ABSTRACT The present study evaluated the potential for the reduction of sampling effort in studies of ephemeropteran nymphs in Brazilian Amazon streams, Pará State, Brazil, without the loss of ecological information (species composition, abundance, and richness), and the congruence of different levels of taxonomic resolution (morphospecies, genus, family and functional group). Test groups of 15, 10 and five subsamples were selected from the 20 subsamples collected per stream (40 streams sampled), and were compared in terms of their species richness and abundance (ANOVA), and composition (Procrustes). Taxonomic resolution was also analyzed in Procrustes. Species abundance (F(3, 156) = 25.426; p < 0.001) and richness (F(3, 156) = 13.866, p < 0.001)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Congruence; Environmental monitoring; Functional feeding group; Taxonomic resolution. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000200137 |
| |
|
|
| Fonseca, Iraúza Arroteia; UEM; Siqueira, Natália Silveira; UEM; Rodrigues, Liliana; UEM. |
| Este trabalho objetivou analisar a riqueza e a abundância de algas perifíticas nos rios do Corvo e Guairacá, tributários do reservatório de Rosana, quando da instalação de tanques-rede. Acreditava-se que o ponto logo à frente dos tanques-rede apresentaria menor riqueza e abundância de algas e que o reservatório influenciaria as estações a jusante dos tanques. Para isso, coletas foram realizadas a montante, em frente e a jusante da instalação de tanques-rede. Independentemente do ambiente, a estação que apresentou maior riqueza foi 1.000 m a montante. Diminuição na riqueza foi verificada nas estações 500 m a montante e 500 m a jusante. Quanto à densidade, em frente aos tanques, observou-se maior abundância, seguida pela estação a 1.000 m a jusante. Já, nas... |
|
Palavras-chave: Periphytic algae; Environmental monitoring; Reservoir; Net cage 2.00.00.00-6 Ciências Biológicas perifíton; Monitoramento ambiental; Aqüicultura; Estrutura de comunidade Ecologia. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2523 |
| |
|
|
| Montes, Caroline da Silva; UFPR; Ferreira, Maria Auxiliadora Pantoja; UFPR; Santos, Simone do Socorro Damasceno; UFPR; Ledebur, Esther Iris C. Freifrau Von; UFPR; Rocha, Rossineide Martins; UFPR. |
| This work analyzes the morphological alterations in Brachyplatystoma rousseauxii gills and evaluates whether this species can be considered an environmental monitoring biomarker of Guajará Bay. Sampling was carried out in four areas around Belém, Brazil, in four annual periods: dry/wet season, wet season, wet/dry season and dry season. Water pH, temperature and suspended material were evaluated. A total of 36 specimens were collected. The second right gill arch of each animal was removed and immediately fixed and processed for histopathology analysis with light microscopy. The physicochemical analysis of the water during the study period showed slight acidity, temperature and material in suspension within normal levels. Histopathological analysis of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomarkers; Environmental monitoring; Histological alterations; Fish Morfologia biomarkers; Environmental monitoring; Histological alterations; Fish Histologia. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4800 |
| |
|
|
| Cunha,Davi G. F.; Grull,Doron; Damato,Murilo; Blum,José R. C.; Eiger,Sergio; Lutti,José E.I.; Mancuso,Pedro C. S.. |
| The management of urban water resources plays an important role for developing countries. The Tietê and Pinheiros Rivers (São Paulo, Brazil) are affected by domestic and industrial effluents and by the diffuse pollution. This research aimed to quantify 134 variables in the water of Tietê and Pinheiros Rivers (approximately 7,200 and 6,600 analyses, respectively) from August 2007 to December 2008. The idea was to verify if the fact that both rivers are located in the same basin is enough to consider the application of a single management plan for both. Data showed that the rivers presented significant anthropogenic interference. The results suggested that such rivers must be subjected to individual management plans since there were exclusive occurrences... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental monitoring; Metropolitan region of São Paulo (MRSP); Urban rivers; Water pollution; Water quality; Watershed management. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000400032 |
| |
|
|
| Calaça,Analice; Faria,Michel Barros; Silva,Diego Afonso; Fialho,Áquila Oliveira; Melo,Fabiano Rodrigues de. |
| Abstract: The Amazonian rainforest harbors one of the most diverse mammal faunas found anywhere in the world, although this fauna is still poorly known. Inventories are essential for the understanding of the biology and ecology of species, and provide basic data for conservation. Over 15 years of sampling in the Saracá-Taquera National Forest, we recorded 72 species of small (nonvolant), medium, and large mammals belonging to 30 families in 10 orders. These taxa included 29 species endemic to the Amazon biome, and 14 classified as threatened with extinction. Overall, the mammalian species richness recorded in the present study was equal to or greater than that recorded in other Amazonian studies, reflecting high levels of diversity on a biogeographic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trombetas; Oriximiná; Amazonia; Species richness; Environmental monitoring; Species list. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000400305 |
| |
|
| |
|
|
| Cordeiro,Rossana A; Brilhante,Raimunda SN; Pantoja,Lydia DM; Moreira Filho,Renato E; Vieira,Patrícia RN; Rocha,Marcos FG; Monteiro,André J; Sidrim,José JC. |
| This paper reports the results of environmental surveillance of yeasts in specific areas of two tertiary local hospitals. From March 2007 to February 2008, samples from the air of two public hospitals were collected on a monthly basis. The samples were collected through passive sedimentation method (day and night exposure) of Petri dishes. A total of 240 air samples from 10 hospital environments were analyzed. These environments presented similar contamination levels, from which 80 fungi isolates were isolated: Candida parapsilosis (n = 34), Rhodotorula spp. (19), Trichosporon asahii (11), C. tropicalis (8), C. albicans (4), C. glabrata (1), C. guilliermondii (1), C. krusei (1) and Saccharomyces spp. (1). Regarding the presence of yeasts and climatic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental monitoring; Air contamination; Yeasts; Hospitals. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000100007 |
| |
| Registros recuperados: 56 | |
|
|
|
