Heavy metal contamination of brown seaweed and sediments from the UK coastline between the Wear river and the Tees river

Giusti, Lorenzo

doi:10.1016/s0160-4120(00)00117-3

Cited by 92 publications

(40 citation statements)

References 35 publications

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“…This feature has been reported previously (Leal et al, 1997;Giusti, 2001;Villares et al, 2001;Tabudravu et al, 2002), and has important ecological implications. Being at the base of the trophic web, macroalgae may be responsible for the transfer of mercury from the environment to the biota, and ) and % of particulate mercury to total mercury in the water column in the sampling sites, in relation to distance from mercury source.…”

Section: Discussionsupporting

confidence: 83%

“…Heavy metal biomonitoring with macroalgal species is frequent, despite some problems associated with seasonal variations, temperature and salinity conditions and intrinsic factors such as age and growth rate (Leal et al, 1997;Giusti, 2001;Villares et al, 2001;Barreiro et al, 2002;Caliceti et al, 2002;Tabudravu et al, 2002). However, studies specifically focused on mercury contamination are scarce, and have focused mainly on mercury uptake and kinetics by microalgae species (Miles et al, 2001;Moye et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Macroalgae response to a mercury contamination gradient in a temperate coastal lagoon (Ria de Aveiro, Portugal)

Coelho

Pereira

Duarte

et al. 2005

Estuarine, Coastal and Shelf Science

114

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Primary producers represent an important pathway for mercury incorporation in aquatic food webs. With eutrophication processes occurring worldwide, macroalgae may represent a substantial pool of mercury, as a result of its high growth rate and capacity to bind trace metals. The main aim of this work was to evaluate the response of the macroalgae to a human-induced environmental mercury gradient in a temperate coastal lagoon, by assessing the total and organic mercury contamination levels of the dominant species (Enteromorpha, Fucus and Gracilaria). Total mercury in the plant tissues ranged from 0.02 to 2.1 mg g ÿ1 dwt. Fucus was the most contaminated algae, followed by Gracilaria and Enteromorpha. As a whole, organic mercury never exceeded 15% of total mercury content, but tended to increase with distance to metal source on all macroalgae indicating complex physiological responses from these primary producers in areas of high and low mercury concentrations. Sessile macroalgae may be important mercury immobilisation agents, while free-floating algae (Enteromorpha) play an important role in mercury transport from contaminated areas (G10 g ha ÿ1 ) to other areas of the lagoon and even to coastal waters. Based on the present results the use of macroalgal biomass from contaminated areas for direct or indirect human use (e.g. agricultural, industrial and food purposes) may result in health risks, due to the high bioaccumulation capacity (as high as 10 4 the dissolved mercury concentrations).

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Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Macroalgae response to a mercury contamination gradient in a temperate coastal lagoon (Ria de Aveiro, Portugal)

Coelho

Pereira

Duarte

et al. 2005

Estuarine, Coastal and Shelf Science

114

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“…Metal accumulation by Chlorella vulgaris were shown to be in an order of Cu 2+ >Co 2+ >Zn 2+ . The ability of microalgae to accumulate metals from aqueous solution is well-documented (Fathi and Falkner, 1997;Fathi et al, 2000;Giusti, 2001) as well as the possibility of using microbial biomass to remove metals from effluents (Macaskie, 1991;Hamdy, 2000). Algae take metals up both passively and actively.…”

Section: Resultsmentioning

confidence: 99%

Toxicological Response of the Green Alga <i>Chlorella vulgaris</i>, to Some Heavy Metals

Afkar¹

2010

American Journal of Environmental Sciences

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Problems statement:The disturbance of aquatic ecosystems provoked by heavy metals pollution from industrial and domestic sources, has as consequence the loss of biological diversity, as well as increased bioaccumulation and magnification of toxicants in the food chain. The aim of this study was to evaluate the effect of some heavy metals on some physiological activities of Chlorella vulgaris beyerinck with special references to metal bioaccumulation. Approach: Chlorella vulgaris Beyerinck was isolated from Al-Asfar Lake, Al-Hassa, Saudi Arabia. A standard initial inoculum of the isolated algae was inoculated to culture flasks. The culture flasks were supplied with various concentrations of Cobalt, Copper and Zinc ranging from 10 −6 -10 −9 M. At the end of the incubation period cultures were filtered and washed several times by distilled water for measurements the various experimental parameters. Results: The data show that the lower doses of the three tested metals had stimulatory effect in biomass yield of Chlorella vulgaris, whereas the higher doses were inhibitory depending on the type of the metal. The inhibitory effect of copper to the growth parameters of Chlorella vulgaris was more pronounced than other two tested metals. The total protein content, total carbohydrate and the total free amino acids of the tested green alga Chlorella vulgaris gradually decreased in a manner dependent on the metal concentration in the medium. On the other hand, bioaccumulation of cobalt, copper and zinc by Chlorella vulgaris cells were parallel to increasing the concentrations in the culture medium. Conclusion: The inhibitory and stimulatory effects of either of the used heavy metals depend on concentration. Different organisms, however, have different sensitivities to the same metal and the same organisms may be more or less damaged by different metals. The uptake of an element from the surrounding medium is seldom exactly proportional to the amount present in the water.

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“…Sediment has also been recognized as one of the important indicators of metal contamination for ecosystem quality assessment (Giusti 2001;Birch and Taylor 2002;Rate et al 2000) and has drawn wide attention in recent years (Liu et al 2009;Chen et al 2009Chen et al , 2000He et al 2009;Zhao et al 2008). Those metals can be released by various processes under favorable conditions, and aquatic organisms might be exposed to a high level of heavy metals, which may cause potential health risks to the local inhabitants through food webs (Ghregat et al 2011;Cui et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Assessment of heavy metal contamination in the sediments from the Yellow River Wetland National Nature Reserve (the Sanmenxia section), China

Cheng

Wang

Huang

et al. 2015

Environ Sci Pollut Res

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The Yellow River Wetland National Nature Reserve (the Sanmenxia section) is an important area of the Yellow River for two important hydrologic gauging stations: the Sanmenxia reservoir and the Xiaolangdi reservoir. Seven sites along the section were selected: Jiziling, Dinghuwan, Houdi, Canglonghu, Shangcun, Wangguan, and Nancun. After the microwave digestion with aqua regia, concentrations of Cu, Pb, Cd, Cr, Zn, and Mn in the sediments were analyzed by flame atomic absorption spectrometry with air-acetylene flame. The results showed that all the concentrations of Cr detected were from the lithogenic source, and 63 % Mn, 48 % Pb, 41 % Cu, 20 % Cd, and 12 % Zn were from the anthropogenic source. The values of the index of geoaccumulation pointed out that there was moderate contamination of Mn at the Dinghuwan (1.04) and Houdi (1.00) sites (class 2), while the modified degree of contamination denoted that the contamination at the Houdi site (2.02) was moderate, nil to very low at the Nancun and Shangcun sites and low at the other sites, consisting with the tendency of pollution load index. For metal toxicity, the sediment pollution index indicated that the sediments of the Canglonghu site were low polluted, that of the Houdi site is nearly slightly contaminated, and those of others were natural and uncontaminated. It was vital to evaluate the degree of contamination with individual and overall elements and even with the metal toxicity. Cu, Pb, and Mn contaminations were aggravated in the Sanmenxia section, and there maybe was one of the main anthropogenic sources of these metals along the Yellow River. The findings were expected to update the current status of the heavy metal pollution in the Sanmenxia section as well as to create awareness concerning the sound condition of the whole reaches of the Yellow River.

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Heavy metal contamination of brown seaweed and sediments from the UK coastline between the Wear river and the Tees river

Cited by 92 publications

References 35 publications

Macroalgae response to a mercury contamination gradient in a temperate coastal lagoon (Ria de Aveiro, Portugal)

Macroalgae response to a mercury contamination gradient in a temperate coastal lagoon (Ria de Aveiro, Portugal)

Toxicological Response of the Green Alga <i>Chlorella vulgaris</i>, to Some Heavy Metals

Assessment of heavy metal contamination in the sediments from the Yellow River Wetland National Nature Reserve (the Sanmenxia section), China

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