Uptake and distribution of N, P and heavy metals in three dominant salt marsh macrophytes from Yangtze River estuary, China

Quan, Weimin; Han, J.D.; Shen, Anglv; Ping, Xianyin; Qian, Peng; Li, C.J.; Shi, Liyan; Chen, Y.Q.

doi:10.1016/j.marenvres.2006.12.005

Cited by 84 publications

(37 citation statements)

References 45 publications

(91 reference statements)

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“…Even though the rest of heavy metals principally remain in the roots and rhizomes, meaning they do not represent a critical problem as far as release to the environment is concerned, heavy-metal concentrations, as measured in aerial parts of the plants, were as high as several estuaries recognized as anthropically impacted (Burke et al 2000;Quan et al 2007). This fact allowed one to maintain that the mentioned levels (medium-salt marsh and high-salt marsh) must have the same exposition to heavy metal sources, similar physical-chemical conditions regulating metal distribution within the compartments on the salt marshes, or both mentioned processes simultaneously.…”

Section: Discussionmentioning

confidence: 99%

The role of the smooth cordgrass Spartina alterniflora and associated sediments in the heavy metal biogeochemical cycle within Bahía Blanca estuary salt marshes

et al. 2008

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Background, aim, and scope Bahía Blanca estuary is characterized by the occurrence of large intertidal areas, including both naked tidal flats and salt marshes densely vegetated with Spartina alterniflora. The estuary is strongly affected by human activities, including industrial and municipal discharges, harbor maintenance, cargo vessels and boat navigation, oil storage and processing, etc. Even numerous studies have reported the occurrence and distribution of heavy metals in sediments and biota from this estuary, although the function of the halophyte vegetation on metals distribution was at present not studied. The main objective of the present study was to understand the potential role of the salt marshes as a sink or source of metals to the estuary, considering both the obtained data on metal levels within sediments and plants from the studied areas at naked tidal as well as vegetated flats. Materials and methods The selected study area, named Villa del Mar, was located in the middle estuary coast. The sampling was carried out under low tide conditions, and the sampling area was divided into two parts: A (close to Villa del Mar) and B (north-westerly of Villa del Mar). In each part, two integrated samples of S. alterniflora (the first in the medium-salt marsh and the second in the higher one) were collected. Also sediments associated with the roots of S. alterniflora were taken at the same locations, in addition to another sediment sample from the naked zones of the tidal flats (without any vegetation). After corresponding treatment at the laboratory, plant and sediment samples were mineralized according to Marcovecchio and Ferrer, J Coast Res 21:826-834, 2005), in order to measure their metal concentrations by atomic absorption spectroscopy (AAS). Analytical quality (AQ) was checked against certified reference materials from NIES, Tsukuba (Japan). Results Most of the Spartina samples have shown highest Cd and Mn concentrations in the aerated parts of the plants, indicating an allocation process from the roots up to the leaves. Most of the samples have presented non-detectable Pb and Cr values. Cu, Fe, Ni, and Zn have presented highest concentrations in the underground parts of the plant, suggesting an accumulation process in the roots and rhizomes. In the case of sediments, samples from those sites

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Section: Discussionmentioning

confidence: 99%

The role of the smooth cordgrass Spartina alterniflora and associated sediments in the heavy metal biogeochemical cycle within Bahía Blanca estuary salt marshes

et al. 2008

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“…The aquatic plant species Phragmites australis is a perennial grass that naturally grows in wet habitats throughout the world. This plant can tolerate environmental stresses such as heavy metal pollution [60]. Phragmites australis plants are widely used in the construction of artificial wet sites for the treatment of industrial drainage water rich in its heavy metal contents [56].…”

Section: Phytoremediationmentioning

confidence: 99%

The Pollution of Water by Trace Elements Research Trends

Alakeel¹

2018

Advances in Bioremediation and Phytoremediation

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Water pollution has been a growing issue for the last decades. This is mainly because of the boost in human population, and the motivations that lead to technological advances for the welfare of the society. Water pollution originates from different sources such as agricultural, municipal, industrial, and landfills drainage waters. These pollutants, which are either organic, nutrient, or heavy metals pollutants, are very deleterious to the natural ecosystems and eventually harmful to humans. Different procedures have been proposed for handling heavy metals water pollution, which encompass electro-osmosis, ion exchange, electrokinetic, sludge activation, as well as phytoextraction. Water contaminants are also removed using flotation, membrane filtration, aeration, precipitation, coagulation-flocculation, ion exchange, and electrochemical treatment. These procedures are costly and have prompted the use of other techniques, such as phytoremediation. Phytoremediation involves the utilization of plant species to alleviate the impacts of environmental pollution. It could be implemented to eliminate pollutants from various natural ecosystems including water, soil, and air or to develop new vegetation growth on disturbed or barren ground. Different plant species have been used for phytoremediation. This chapter addresses trace elements pollution of natural water resources in details and the abilities of Aquatic plant communities such as Reed plants (Phragmites australis) to absorb soluble trace elements from water.

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“…Based on the research of Fiala (1976), the average annual value of net production of belowground reed tissues would be 45 % of the maximum aboveground biomass. The concentrations of TN and TP in the belowground tissues are relatively constant during the growing season (Quan et al, 2007). These two concentrations can be measured by experiment.…”

Section: Nutrient Balance Calculationmentioning

confidence: 99%

An optimisation approach for shallow lake restoration through macrophyte management

Yin

Zhang

2014

Hydrol. Earth Syst. Sci.

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Abstract. Lake eutrophication is a serious global environmental issue. Phytoremediation is a promising, costeffective, and environmentally friendly technology for water quality restoration. However, besides nutrient removal, macrophytes also deeply affect the hydrologic cycle of a lake system through evapotranspiration. Changes in hydrologic cycle caused by macrophytes have a great influence on lake water quality restoration. As a result of the two opposite effects of macrophytes on water quality restoration (i.e. an increase in macrophytes can increase nutrient removal and improve water quality while also increasing evapotranspiration, reducing water volume and consequently decreasing water quality), rational macrophyte control through planting and harvest is very important. In this study, a new approach is proposed to optimise the initial planting area and monthly harvest scheme of macrophytes for water quality restoration. The month-by-month effects of macrophyte management on lake water quality are considered. Baiyangdian Lake serves as a case study, using the common reed. It was found that water quality was closest to Grade III on the Chinese water quality scale when the reed planting area was 123 km 2 (40 % of the lake surface area) and most reeds would be harvested at the end of June. The optimisation approach proposed in this study will be a useful reference for lake restoration.

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Uptake and distribution of N, P and heavy metals in three dominant salt marsh macrophytes from Yangtze River estuary, China

Abstract: International audienc

Cited by 84 publications

References 45 publications

The role of the smooth cordgrass Spartina alterniflora and associated sediments in the heavy metal biogeochemical cycle within Bahía Blanca estuary salt marshes

The role of the smooth cordgrass Spartina alterniflora and associated sediments in the heavy metal biogeochemical cycle within Bahía Blanca estuary salt marshes

The Pollution of Water by Trace Elements Research Trends

An optimisation approach for shallow lake restoration through macrophyte management

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