Water Hyacinth
Mostrando 13-24 de 31 artigos, teses e dissertações.
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13. Desempenho de tanques vegetados em um ecossistema engenheirado para tratamento descentralizado de esgotos domiciliares na Ilha Grande, RJ / Performance of vegetated tanks in an engineered ecosystem for decentralized treatment of sewage in Grande Island, RJ
The lack of appropriate infrastructure for sewage collection and treatment affects several communities living under unhealthy conditions in coastal areas and in insular systems in Rio de Janeiro State. The objective of this study was to assess the performance of an engineering ecosystem for the descentralized treatment of domestic wastewater located at the C
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/03/2011
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14. Óxido nítrico e tolerância ao arsênio em aguapé / Nitric oxide and tolerance to arsenic in water hyacinth
Plantas de aguapé (Eichhornia crassipes (Mart.) Solms) foram submetidas a níveis tóxicos de arsênio (As) com o objetivo de induzir o estresse oxidativo e avaliar o papel do óxido nítrico (NO), fornecido via nitroprussiato de sódio (SNP), como agente atenuante desse estresse. As plantas foram tratadas com 20 μM de As, com ou sem SNP, na concentra�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2011
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15. Structural and ecophysiological alterations of the water hyacinth [Eichhornia crassipes (Mart.) Solms] due to anthropogenic stress in Brazilian rivers
In this work, the structural and ecophysiological alterations (chlorophyll a fluorescence and photosynthetic pigments), and quantification of Cr, Pb and Zn in the leaf limb, petiole and younger and older roots of water hyacinth from the lower, medium and upper Paraíba do Sul river (PSR) and Imbé river were evaluated. The plants from the medium and upper PS
Brazilian Archives of Biology and Technology. Publicado em: 2011-10
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16. Feeding patterns of the aquatic grasshopper Cornops aquaticum (Bruner) (Orthoptera: Acrididae) in the middle Paraná river, Argentina
The aquatic grasshopper Cornops aquaticum (Bruner) is native to South America and inhabits lowlands from southern Mexico to Central Argentina and Uruguay. This grasshopper is host-specific to aquatic plants of the genera Eichhornia and Pontederia. The objectives of this study were to analyze the feeding patterns of the aquatic grasshopper C. aquaticum in rel
Neotropical Entomology. Publicado em: 2011-04
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17. Cadmium-induced oxidative stress and antioxidative enzyme response in water hyacinth and salvinia
The reactive oxygen species generation, lipid peroxidation and antioxidative enzyme response of water hyacinth and salvinia to Cd were evaluated. Cadmium was absorbed/accumulated mainly in the roots, but significant amounts also translocated to the leaves. No Cd effect on dry weight was detected, although toxicity symptoms were visible. Superoxide and H2O2 c
Brazilian Journal of Plant Physiology. Publicado em: 2011
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18. Composição florística e fauna associada das ilhas flutuantes livres, Rio Paraguai, Corumbá, MS.
As ilhas flutuantes livres englobam várias espécies vegetais tais como camalotes e gramíneas. Nas folhas e raízes destas plantas encontra-se uma diversidade de organismos. Este trabalho teve como objetivo fazer o levantamento das espécies vegetais componentes das ilhas flutuantes livres e conhecer os organismos associados e seus hábitos alimentares. Fr
SIMPÓSIO SOBRE RECURSOS NATURAIS E SOCIOECONÔMICOS DO PANTANAL. Publicado em: 2011
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19. Ecophysiological adaptation and metal accumulation in water hyacinth from two tropical rivers
As adaptações ecofisiológicas de aguapé (hiperacumuladora de metais) sob condições ambientais adversas ainda não estão totalmente elucidadas. Este trabalho avaliou pigmentos fotossintéticos e fluorescência da clorofila a em aguapé coletados em diferentes regiões (alto, médio e baixo) do rio Paraíba do Sul (RPS) e no rio Imbé, Brasil. Adicional
Brazilian Journal of Plant Physiology. Publicado em: 2010
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20. AGUAPÉ (Eichhornia crassipes) COMO BIOADSORVENTE DO CORANTE TURQUESA REMAZOL / WATERY WINE (Eichhornia crassipes) AS BIOADSORVENTE OF THE CORANTE TURQUOISE REMAZOL
Neste trabalho, a raiz, o caule e a folha da Eichhornia crassipes foram utilizados na preparação de bioadsorventes para remoção do corante têxtil Turquesa Remazol, em meio aquoso. A biomassa do aguapé (raiz, caule e folha) foi triturada separadamente e tratada com uma solução de ácido nítrico, a 50C, seguida de cinco lavagens para a melhor extraç�
Publicado em: 2010
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21. Metaphase I orientation of Robertsonian trivalents in the water-hyacinth grasshopper, Cornops aquaticum (Acrididae, Orthoptera)
Trivalents resulting from polymorphic Robertsonian rearrangements must have a regular orientation in metaphase I if the polymorphisms are to be maintained. It has been argued that redistribution of proximal and interstitial chiasmata to more distal positions is necessary for a convergent orientation, the only one that produces viable gametes. Cornops aquatic
Genetics and Molecular Biology. Publicado em: 23/01/2009
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22. Physiological responses of Eichhornia crassipes [Mart.] Solms to the combined exposure to excess nutrients and Hg
In the present study the physiological response of water hyacinth (Eichhornia crassipes [Mart.] Solms) to the combined exposure of excess nutrients and Hg was examined. Young water hyacinth plants were exposed to a range of HgCl2 and KNO3 concentrations. After eight weeks, submerged plant tissues reached an Hg concentration of 4 mg g-1. The accumulation of P
Brazilian Journal of Plant Physiology. Publicado em: 2009
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23. Alometria foliar, biomassa e fitoacumulação de cromo em Eichhornia crassipes (Mart.) Solms
Nos ambientes aquáticos tropicais, o crescimento das macrófitas aquáticas é favorecido pelas altas temperaturas e elevada intensidade de radiação solar. Nestas condições, tal crescimento pode subsidiar efetivamente a manutenção das cadeias tróficas e os fluxos de energia dos ambientes aquáticos naturais ou até mesmo construídos. Considerando qu
Publicado em: 2008
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24. Tratamento de efluente de piscicultura orgÃnica utilizando macrÃfitas aquÃticas Eichhornia crassipes (mart. Solms) e Egeria densa (Planchon.) / Treatment of effluent of organic pisciculture using macrophytes aquatics eichhornia crassipes (mart. solms) e egeria densa (planchon.)
The objective of the recent research was to evaluate the efficiency of a system of aquatic treatment being used macrophytes Eichhornia crassipes (water hyacinth) and Egeria dense (egeria) in three times of hydraulic detention, the removal of pollutants of the effluent one of organic culture of tilÃpias of the Nile (Oreochromis niloticus), and to get given o
Publicado em: 2007