Heavy Metals in the Burrowing Bivalve Scrobicularia Plana From Contaminated and Uncontaminated Estuaries

1978 ◽  
Vol 58 (2) ◽  
pp. 401-419 ◽  
Author(s):  
G. W. Bryan ◽  
L. G. Hummerstone
Keyword(s):  
Heavy Metals ◽  
Life Span ◽  
Mytilus Edulis ◽  
Shell Length ◽  
Estuarine Sediments ◽  
Biological Availability ◽  
The South ◽  
Scrobicularia Plana ◽  
Deposit Feeding

Analysis of the deposit-feeding bivalve Scrobicularia plana (da Costa) has been proposed as a method of assessing the biological availability of heavy metals in estuarine sediments (Bryan & Hummerstone, 1977; Bryan & Uysal, 1978). Scrobicularia has a number of attributes which are useful in this type of indicator: (i) it is common in many British estuaries, particularly in the south, and often penetrates much farther upstream than other common bivalves such as Mytilus edulis; (ii) it is a convenient size for analysis and, during its life span of perhaps 10 years, reaches a shell length of 40-50 mm (Green, 1957; Hughes, 1970); (iii) it is a good accumulator of metals and appears to reflect changes in their biological availability.

Factors controlling the availability of sediment-bound lead to the estuarine bivalve scrobicularia plana

1978 ◽  
Vol 58 (4) ◽  
pp. 793-802 ◽  
Author(s):  
Samuel N. Luoma ◽  
G. W. Bryan
Keyword(s):  
Hydrochloric Acid ◽  
Surface Sediments ◽  
Soft Tissues ◽  
Physicochemical Characteristics ◽  
Biological Availability ◽  
North West ◽  
Scrobicularia Plana ◽  
Deposit Feeding

Concentrations of lead in the soft tissues of the deposit-feeding bivalve Scrobicularia plana have been compared with the physicochemical characteristics of sediments in 20 estuaries in southern and western England and one in north-west France. The results indicate that the biological availability of lead in the sediment is controlled mainly by the concentration of iron, and that the concentration of lead in the bivalve may be predicted from the Pb/Fe ratio in 1 N hydrochloric acid extracts of surface sediments.

Assessment of ex-situ chemical washing of heavy metals from estuarine sediments around an industrial harbor in Southern Taiwan

2019 ◽  
Vol 19 (7) ◽  
pp. 3108-3122 ◽  
Author(s):  
Yu-Jen Shih ◽  
Syuan-Yao Syu ◽  
Chiu-Wen Chen ◽  
Chih-Feng Chen ◽  
Cheng-Di Dong
Keyword(s):  
Heavy Metals ◽  
Estuarine Sediments ◽  
Ex Situ ◽  
Chemical Washing ◽  
Southern Taiwan

scholarly journals Bioavailability of heavy metals bound to estuarine sediments as a function of pH and salinity values

2003 ◽  
Vol 15 (4) ◽  
pp. 101-114 ◽  
Author(s):  
I. Riba ◽  
E. García-Luque ◽  
J. Blasco ◽  
T. A. DelValls
Keyword(s):  
Heavy Metals ◽  
Estuarine Sediments

scholarly journals Accumulation of heavy metals in birch and pine forest roadside phytocenoses in the south of Tyumen region

2018 ◽  
Vol 26 (3) ◽  
pp. 233-238
Author(s):  
E. I. Popova
Keyword(s):  
Heavy Metals ◽  
Plant Communities ◽  
Betula Pendula ◽  
Absorption Efficiency ◽  
Pine Forests ◽  
The South ◽  
Natural Ecosystems ◽  
Complex Investigation ◽  
Betula Pendula Roth ◽  
The Stability

We conducted a complex investigation of anthropogenic roadside phytocoenoses. For the study, 8 plots (birch and pine forests) were selected, close to roads in the south of Tyumen region within the five administrative districts: Uporovsky, Zavodoukovsky, Yalutorovskiy, Yarkovsky, and Tobolsk. As a result of the studies, 75 species of vascular plants from 21 families were noted in the plant communities. It was found that the majority of the total projective cover of the plant communities was provided by synanthropic species. In the synanthropic fraction of the flora, 33 species belonging to 11 families were identified, those with the most species being: Scrophulariaceae, Compositeae, Rubiaceae, Poaceae, Fabaceae, Polygonaceae, Umbellíferae. The index of synanthropization of the flora of the studied phytocenoses is in the range from 43% to 64%. Among the identified pollutants accumulated in the phytocenoses, the group of heavy metals was identified (Cr, Cu, Ni, Pb, Sr, Zn). Needles of Pinus sylvestris L. mainly accumulate Cr, Cu, Ni, Sr. The greatest concentration of Pb and Zn was found in the leaves of Betula pendula Roth. The content of other heavy metals in the leaves of Betula pendula Roth. during the growing season was relatively stable. Accumulation of heavy metals in the studied components of forest ecosystems can be displayed structurally: soil > leaves < phytomass (birch forests), soil < needles > phytomass (pine forests). Methodological approaches to conducting a complex of long-term observations of natural ecosystems have been formulated, substantiated and justified. To evaluate the absorption efficiency of heavy metals, the biological absorption coefficient was calculated. The obtained results can be used as a control in the study of migration and accumulation of heavy metals and for assessing the degree of anthropogenic load on phytocenoses of roadside ecosystems and predict the extent of probable changes in them. The forecast of the results will facilitate the elaboration of a necessary system of measures aimed at increasing the stability of plant communities.

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