Influence of macroalgal diversity on accumulation of radionuclides and heavy metals in Bulgarian Black Sea ecosystems

Strezov, A.; Nonova, Tzvetana

doi:10.1016/j.jenvrad.2008.09.007

Cited by 29 publications

(13 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The algae represent the first link in the food chain, their interaction with the environment being realised through chemical and biological processes, including bioaccumulation, excretion, organic matter production and decomposition [27]. Due to their high capacity for heavy metals bioaccumulation, the algae are often used in assessment of marine ecosystems, being considered very good bio-indicators.…”

Section: Heavy Metals Accumulation In Algaementioning

confidence: 99%

“…According to a study focused on macroalgae within the Black Sea, along the Bulgarian coastline, during 1996-2004, heavy metals concentration levels were higher in the green algae, emphasizing that, these organisms are good indicators for the environmental contamination with heavy metals. The highest concentrations of heavy metals in the NW of Black Sea are caused by the Danube, Dnieper and Dniester tributaries [27].…”

Section: Heavy Metals Accumulation In Algaementioning

confidence: 99%

See 1 more Smart Citation

Bioaccumulation of heavy metals in marine organisms from the Romanian sector of the Black Sea

Jitar¹,

Teodosiu²,

Oros³

et al. 2015

New Biotechnology

174

View full text Add to dashboard Cite

The aim of this research was to study the accumulation of heavy metals (cadmium - Cd, lead - Pb, chromium - Cr, nickel - Ni, and copper - Cu) from water and sediments into living tissues of relevant marine species from different trophic levels of a food web, representative for shallow waters of the Romanian Black Sea Coast where the main anthropogenic impacts exist. The heavy metals concentrations were analysed by using an Atomic Absorption Spectrometer with graphite furnace, the results being further used to calculate the bioconcentration factors for a few key taxa like green and red algae, molluscs and fishes. Seven sampling sites influenced by anthropogenic pollution sources (municipal wastewater treatment plants and diffuse sources) were considered and a total of 300 samples were analysed for the period 2011-2012, this being the first unitary study for the Romanian Black Sea marine ecosystem. In 2011 and 2012 there were no significant differences between the sampling areas considering the heavy metals concentrations in water. For the sediments significant differences were observed between sampling sites for some heavy metals, namely Pb in 2011 and Pb, Cu and Cd in 2012, the highest concentrations being registered in the southern sector of the Romanian Black Sea shore, where the anthropogenic pollution sources are represented by the harbour and wastewater treatment plants. The values of the bioaccumulation factors (BCFsed) shows that algae are good accumulators for Cu>Pb>Ni>Cr>Cd, in comparison with BCFwater where the order of heavy metal accumulation was different: Cr>Ni>Pb>Cd>Cu. Molluscs have higher bioconcentration factors for Cu and Cd for sediments and for Cu and Ni for water. Rapana venosa accumulated more Cd and Cu. For fishes, Pb, Cu and Ni had the highest values in the tissues of benthonic species Mullus barbatus. In bivalve molluscs and fishes, in the majority of cases, there were not recorded exceeding mean concentrations as compared to the maximum allowed concentrations for Cd and Pb.

show abstract

Section: Heavy Metals Accumulation In Algaementioning

confidence: 99%

Section: Heavy Metals Accumulation In Algaementioning

confidence: 99%

Bioaccumulation of heavy metals in marine organisms from the Romanian sector of the Black Sea

Jitar¹,

Teodosiu²,

Oros³

et al. 2015

New Biotechnology

174

View full text Add to dashboard Cite

show abstract

“…Studies carried out in the Black Sea ecosystems [20] showed that the red algae species (Rhodophyta) accumulate more heavy metals than the other phyla (except for Fe whose values were higher in green algae). The data confirmed that algae are valuable indicators of the environmental contamination.…”

Section: Discussionmentioning

confidence: 99%

Concentrations of heavy metals in macroalgae in the tropical western Atlantic

Macêdo¹,

Calado²,

Koening³

et al. 2009

WIT Transactions on Ecology and the Environment

View full text Add to dashboard Cite

Studies of heavy metal (copper, lead, zinc and iron) in two species of red macroalgae Gracilariopsis carolinensis Liao and Hommersand and Hypnea musciformis (Wulfen) Lamouroux were carried out to monitor the level of bioavailable metals in coastal areas. The macroalgae and hydrological data were sampled in two areas, at the north and south littoral of Pernambuco (Brazil). The metal concentrations were measured by Atomic Emission Spectrophotometer with Inductive Coupled Plasma. Water temperature ranged from 28 to 31 o C, salinity from 26.4 to 36.9 UPS and dissolved oxygen from 2.43 to 6.37 mL.L -1 . Higher metal concentrations were detected in the south coast, where Hypnea musciformis presented greater retention capacity. A Principal Components Analysis was performed and explained 50.45% of the total data variability. Rainfall presented an important role in the algae metal content. The median metal concentrations of G. carolinensis in the North area were: iron 141 g. . No significant (p<0.05) seasonal changes in metal concentration and no distribution pattern were observed in the studied area.

show abstract

“…With regard to heavy metals, which are potentially hazardous to the environment, numerous benthic plant species, characterized by highly effective bioaccumulation ability, are considered for application as cleaning agents in aqueous reservoirs [15, 16]. However, primarily, benthic plants are used as bioindicators for monitoring surveys of environmental pollutants [10, 12, 17–20]. …”

Section: Introductionmentioning

confidence: 99%

Distribution of 137Cs in benthic plants along depth profiles in the outer Puck Bay (Baltic Sea)

Zalewska

2012

J Radioanal Nucl Chem

View full text Add to dashboard Cite

A study was conducted on three macroalgae species: Polysiphonia fucoides and Furcellaria lumbricalis, the species of the red algae division, and Cladophora glomerata, representing the green algae division, as well as Zostera marina, representing vascular plants. The main aim of the study was to recognize the level of 137Cs concentrations in the plants, which could be used as a measurement of bioaccumulation efficiency in the selected macrophytes at varying depths, and in the seasonal resolution of the vegetation period: spring–summer and autumnal. The plants’ biomass clearly showed seasonal variability, as did the 137Cs concentrations in the plants. Cesium activity also changed with depth. Seasonal variability in radionuclide content in the plants, as well as the differences in its activity determined along the depth profile, were related mainly to the plant biomass and the dilution effect caused by the biomass increment and reflected the growth dynamics. P. fucoides showed much greater bioaccumulation ability at each depth as compared to C. glomerata, a green algae. Lower concentrations of 137Cs were also identified in F. lumbricalis and in Z. marina, mostly as a result of differences in morphology and physiology. P. fucoides can be recommended as a bioindicator for the monitoring of 137Cs contamination due to the high efficiency of bioaccumulation and the available biomass along the depth profile, as well as the occurrence throughout the entire vegetation season.

show abstract

Influence of macroalgal diversity on accumulation of radionuclides and heavy metals in Bulgarian Black Sea ecosystems

Cited by 29 publications

References 23 publications

Bioaccumulation of heavy metals in marine organisms from the Romanian sector of the Black Sea

Bioaccumulation of heavy metals in marine organisms from the Romanian sector of the Black Sea

Concentrations of heavy metals in macroalgae in the tropical western Atlantic

Distribution of 137Cs in benthic plants along depth profiles in the outer Puck Bay (Baltic Sea)

Contact Info

Product

Resources

About