Influence of photoperiod on the uptake of nitrogen and phosphorus in the water by Eichhornia crassipes and Salvinia auriculata

Petrucio, M. M.; Esteves, Francisco A.

doi:10.1590/s0034-71082000000300002

Cited by 20 publications

(9 citation statements)

References 13 publications

(13 reference statements)

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“…(Adesodun et al 2010 ; Mazumdar and Das 2015 ; Zhang et al 2010a , 2010b ) . Eichhornia crassipes was found to efficiently remove NO 3 − , Fe, Zn, Cu, Cd, and Cr while Cyperus rotundus uptook Cd and Cr from contaminated water and soil, respectively (Petrucio and Esteves 2000 ; Sood et al 2012 ; Swamy 2014 ). Ricinus communis was found to accumulate Cd, Pb, Ni, As, and Cu from contaminated soil (Bauddh et al 2015 ).…”

Section: Resultsmentioning

confidence: 99%

Assessment of macrophyte, heavy metal, and nutrient concentrations in the water of the Nairobi River, Kenya

Njuguna

Xue

Gituru

et al. 2017

Environ Monit Assess

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Nairobi River tributaries are the main source of the Athi River. The Athi River basin is the fourth largest and important drainage system in Kenya covering 650 km and with a drainage area of 70,000 km2. Its water is used downstream by about four million people not only for irrigation but also for domestic purposes. However, its industrial, raw sewer, and agricultural pollution is alarming. In order to understand distribution and concentration of heavy metals and nutrients in the water of Nairobi River, 28 water samples were collected in the rainy season (October) of 2015 and dry season (June) of 2016. Cd, Cu, Cr, Zn, As, Pb, Fe, Ni, Mn, NO3 −, and TP were analyzed. Only Cr, Pb, Fe, and Mn had concentrations exceeding the WHO permissible limit for drinking water. Out of the 28 sites examined in the study, one site had Pb exceeding the WHO recommended level. Similarly, three sites exceeded the same level for Cr. Only three sites were within the WHO permissible limits for drinking water for Mn while just four sites were within USEPA limit for Fe. Industrial effluent, domestic sewerage, agricultural activities, and solid waste were the main sources of pollution. Significant spatial variation of both heavy metals and nutrients concentration was observed and emanated from point source pollution. Eleven out of 31 macrophytes species that were identified along the river and its tributaries are effective heavy metal and nutrient bioaccumulators and may be used in phytoremediation.

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Section: Resultsmentioning

confidence: 99%

Assessment of macrophyte, heavy metal, and nutrient concentrations in the water of the Nairobi River, Kenya

Njuguna

Xue

Gituru

et al. 2017

Environ Monit Assess

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“…Various nitrogen forms have different effects on growth and nitrogen uptake of plants. Several studies have shown that aquatic macrophytes grow well when NH 4 + is the main nitrogen source probably because less energy is needed for NH 4 + uptake and assimilation compared to NO 3 − nutrition (Room and Thomas, 1986;Petrucio and Esteves, 2000;Fang et al, 2007;Jampeetong and Brix, 2009a;Konnerup and Brix, 2010). Despite the fact that many tropical plants have been used in water treatment systems (Boonsong and Chansiri, 2008;Kantawanichkul et al, 2009;Konnerup et al, 2009), their nitrogen nutrition is not well understood.…”

Section: Introductionmentioning

confidence: 99%

Effects of inorganic nitrogen forms on growth, morphology, nitrogen uptake capacity and nutrient allocation of four tropical aquatic macrophytes (Salvinia cucullata, Ipomoea aquatica, Cyperus involucratus and Vetiveria zizanioides)

2012

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This study assesses the growth and morphological responses, nitrogen uptake and nutrient allocation in four aquatic macrophytes when supplied with different inorganic nitrogen treatments (1) NH 4 + , (2) NO 3 − , or (3) both NH 4 + and NO 3 −. Two free-floating species (Salvinia cucullata Roxb. ex Bory and Ipomoea aquatica Forssk.) and two emergent species (Cyperus involucratus Rottb. and Vetiveria zizanioides (L.) Nash ex Small) were grown with these N treatments at equimolar concentrations (500 M). Overall, the plants responded well to NH 4 +. Growth as RGR was highest in S. cucullata (0.12 ± 0.003 d −1) followed by I. aquatica (0.035 ± 0.002 d −1), C. involucratus (0.03 ± 0.002 d −1) and V. zizanioides (0.02 ± 0.003 d −1). The NH 4 + uptake rate was significantly higher than the NO 3 − uptake rate. The free-floating species had higher nitrogen uptake rates than the emergent species. The N-uptake rate differed between plant species and seemed to be correlated to growth rate. All species had a high NO 3 − uptake rate when supplied with only NO 3 −. It seems that the NO 3 − transporters in the plasma membrane of the root cells and nitrate reductase activity were induced by external NO 3 −. Tissue mineral contents varied with species and tissue, but differences between treatments were generally small. We conclude, that the free-floating S. cucullata and I. aquatica are good candidate species for use in constructed wetland systems to remove N from polluted water. The rooted emergent plants can be used in subsurface flow constructed wetland systems as they grow well on any form of nitrogen and as they can develop a deep and dense root system.

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“…The Imboassica Lagoon has been classified as oligohaline and considered a well-buffered environment because of its alkalinity, a characteristic attributed to the strong influence of the ocean (Petrucio, 1998). The general abiotic conditions of the lagoon have been shown to favor the development of large stands of Charophytes, which often cover the entire benthic region of the lagoon (Petrucio & Esteves, 1998).…”

Section: Introductionmentioning

confidence: 99%

Charophytes as a nutrient and energy reservoir in a tropical coastal lagoon impacted by humans (RJ, Brazil)

2004

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In the Imboassica Lagoon (22 degrees 24'S and 42 degrees 42'W) (Macaé, RJ, Brazil), two species of macroalgae of the genus Chara (C. angolensis and C. fibrosa) registered in large areas were identified. The lagoon is subject to several relevant anthropic impacts, of which untreated sewage is one of the most important. Results of the biomass distribution as analyzed in different areas of the lagoon showed values ranging from 172 to 510 gDW x m(-2). As for the nutrient concentration, the results presented large fluctuations, with carbon values ranging from 325 to 392 mg x g(-1)DW, those of nitrogen, from 14 to 27 mg x g DW, and of phosphorus from 0.45 to 0.85 mg.g(-1) DW. This led to large fluctuations of the C:N:P ratio (from 387:24:1 to 872:47:1). The minimum and maximum energetic values of the biomass were 9.54 e 12.34 kJ x g(-1)DW. Smaller C:N:P ratios tended to occur in more eutrophic areas. The association between biomass and nutrient concentration showed that the highest quantities in the beds are found in oligotrophic areas. The Spearman correlation between nutrient concentration in the water column and biomass was r(s) = 0.45 (p < 0.05) for nitrogen and r(s) = 0.50 (p < 0.01) for phosphorus (n = 30). The large total biomass associated with nutrient concentration and energy content indicates that Charophytes are an important biological compartment in the structure and metabolism of the lagoon.

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Influence of photoperiod on the uptake of nitrogen and phosphorus in the water by Eichhornia crassipes and Salvinia auriculata

Cited by 20 publications

References 13 publications

Assessment of macrophyte, heavy metal, and nutrient concentrations in the water of the Nairobi River, Kenya

Assessment of macrophyte, heavy metal, and nutrient concentrations in the water of the Nairobi River, Kenya

Effects of inorganic nitrogen forms on growth, morphology, nitrogen uptake capacity and nutrient allocation of four tropical aquatic macrophytes (Salvinia cucullata, Ipomoea aquatica, Cyperus involucratus and Vetiveria zizanioides)

Charophytes as a nutrient and energy reservoir in a tropical coastal lagoon impacted by humans (RJ, Brazil)

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