Composição específica e distribuição da comunidade de macrófitas aquáticas no reservatório de aimorés

Pitelli, R.L.C.M.; Pitelli-Merenda, A.M.C.M.; Pitelli, Robinson Antônio; Siqueira, Rômmulo Celly Lima; Barbosa, Helena; Jesus, Liliane Silva De

doi:10.1590/s0100-83582014000300002

Cited by 9 publications

(3 citation statements)

References 8 publications

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“…(Tryon and Tryon, 1982). These plants are floating aquatic macrophytes, originating in South America, acaules, rhizomatous and, under favorable conditions, form an enormous vegetative mass on the water surface (Pitelli et al, 2014), especially Salvinia recognized by verticillate fronds, of which two are floating, whole and green and one submerged, with many divisions, like a no chlorophyll root (Prado, 2006). Among the most common species S. auriculata Aubl., S. minima Baker, S. natans (L.) All.…”

Section: Introductionmentioning

confidence: 99%

Accumulation of copper by the aquatic macrophyte Salvinia biloba Raddi (Salviniaceae)

et al. 2017

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Aquatic macrophytes have properties and mechanisms which are useful for the removal of substances in solution, commonly used in phytoremediation processes in aquatic environments. This study evaluated the performance of copper (Cu) accumulation by Salvinia biloba Raddi (Salviniaceae) in different metal concentrations (1, 3 and 5 µg mL -1 ), as well as the control treatment, measured at intervals of 0, 7 and 14 days under laboratory conditions, with control as to pH and luminosity. After the experiment, the S. biloba biomass was washed, kiln dried, crushed and subjected to the process of digestion, and subsequently the accumulated copper content was determined by atomic absorption spectroscopy. The results showed that S. biloba is apt at accumulating copper, varying significantly between different treatments and days of exposure to the contaminant, as well as its interaction (treatment × days). The highest accumulation values were observed in treatment with 5 µg mL -1 , which at 14 days, with 11,861 µg g-1 of copper. We observed symptoms of toxicity and mortality in plants, probably indicating the effect of copper on the species when at high levels. Salvinia biloba is an efficient species in the removal of copper in solution, its recommendation as a remediating agent in aquatic ecosystems being possible.Keywords: aquatic ecosystems, phytoremediation, aquatic plants, bioaccumulation, water resources.Acumulação de cobre pela macrófita aquática Salvinia biloba Raddi (Salviniaceae) ResumoMacrófitas aquáticas apresentam propriedades e mecanismos úteis à remoção de substâncias presentes em solução, comumente, utilizadas em processos de fitorremediação de ambientes aquáticos. Este estudo avaliou o desempenho de acumulação de cobre (Cu) por Salvinia biloba Raddi (Salviniaceae) em diferentes concentrações do metal (1, 3 e 5 µg mL), além do tratamento controle, avaliados em intervalos de 0, 7 e 14 dias, sob condições laboratoriais, com controle de pH e luminosidade. Após o experimento a biomassa de S. biloba, foi lavada, seca em estufa, triturada e submetida ao processo de digestão, sendo, posteriormente, o teor de cobre acumulado determinado por espectroscopia de absorção atômica. Os resultados evidenciaram que S. biloba é hábil em acumular cobre em sua biomassa, variando significativamente entre os diferentes tratamentos e dias de exposição ao contaminante, bem como por sua interação (tratamentos × dias). Os maiores teores de acúmulo foram observados no tratamento com 5 µg mL -1 , que aos 14 dias apresentou até 11.861 µg g -1 de Cu. Observamos sintomas de toxicidade e mortalidade nas plantas, evidenciando, provavelmente, o efeito do cobre sobre a espécie quando em elevados níveis. Salvinia biloba é uma espécie eficiente na remoção do cobre em solução, sendo possível sua recomendação como agente de remediação em ecossistemas aquáticos.Palavras-chave: ecossistemas aquáticos, fitorremediação, plantas aquáticas, bioacumulação, recursos hídricos. Freitas, F. et al.

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Section: Introductionmentioning

confidence: 99%

Accumulation of copper by the aquatic macrophyte Salvinia biloba Raddi (Salviniaceae)

et al. 2017

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“…The Salviniaceae are comprised of floating aquatic macrophytes, native to South America, which are very productive in these environments (Pitelli et al, 2014;Maria et al, 2018). Salvinia are popularly known as moss or water fern, is an annual macrophyte, heterosporate pteridophyte, whose reproduction occurs either by way of spores or vegetatively (Freitas et al, 2018a).…”

Section: Plant Materialsmentioning

confidence: 99%

Copper accumulation by the root and leaf biomass of Salvinia natans (L.) All. (Salviniaceae)

et al. 2021

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Aquatic plants are often exposed to metal contamination. The study evaluated the bioaccumulation of copper (Cu) ions in aqueous solution by the biomass of leaves and roots of the macrophyte Salvinia natans. Plants of S. natans were submitted to culture solutions with different concentrations of Cu ions, evaluated at intervals of seven days. The leaf and root samples were separately subjected to atomic absorption spectroscopy with flame atomization to assess the concentration of copper accumulated in its biomass. The results demonstrated a pattern of accumulation dependent on the concentration of the metal in the culture medium and the time of exposure of the plants to the contamination. The accumulation was greater in the biomass of the roots when compared to the leaves. Throughout the experiment, toxicity symptoms were observed in the morphology of plants subjected to all copper concentrations, demonstrating the macrophyte's viability for bioindicating the toxicity of this metal in aquatic environments. A high accumulation of copper ions was obtained both in the biomass of the roots and leaves of the plants, confirming their potential bioaccumulator of Cu. The analysis of biomass suggests an important characteristic of metal compartmentalization by the plant, associating the absorption by the roots and the possible transfer to the leaves. In general, our results show that S. natans is an organism with a potential bioindicator and bioaccumulator of Cu and consists of a viable cost-effective option for phytoremediation of aquatic environments contaminated by metals

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“…Entre elas pode-se citar a correção do ambiente, inimigos naturais, controle químico e mecânico, além de métodos de inundação [Pitelli(2000)]. No entanto, a aplicação dessas técnicas muitas vezes esbarra nas limitações ecológicas, sociais e econômicas [Vellini(2000)] recaindo em gastos elevados.…”

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Aplicação das Cadeias de Markov no estudo do controle biológico da planta aquática Eichhornia azurea

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2015

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Composição específica e distribuição da comunidade de macrófitas aquáticas no reservatório de aimorés

Cited by 9 publications

References 8 publications

Accumulation of copper by the aquatic macrophyte Salvinia biloba Raddi (Salviniaceae)

Accumulation of copper by the aquatic macrophyte Salvinia biloba Raddi (Salviniaceae)

Copper accumulation by the root and leaf biomass of Salvinia natans (L.) All. (Salviniaceae)

Aplicação das Cadeias de Markov no estudo do controle biológico da planta aquática Eichhornia azurea

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