Abstract
A major role in terms of danger to the aquatic ecosystem is played by heavy metals, which stand out by their persistence and accumulability. In this study an overview on recent monitoring (2003-2005) of some heavy metals (Cu, Zn, Cd, Pb) analyzed in fish species, plants and benthic macro invertebrates from Danube Delta Biosphere Reserve.In the system of contamination classes elaborated by (Wachs B. 2000), for the grading of the situation of ecosystems in term of heavy metal content, of all the various compartments, fish constitute the only critical part. The fish organs - in particular the muscles – show a very wide spread of concentration. Fish are very sensitive to cadmium and lead poisoning, but certain species, for example roach, perch and gibbel carp in aquatic ecosystem from Danube Delta was found with high concentration of cadmium and lead. The accumulation of contaminants in aquatic organisms can prove harmful to a number of fish species during sensitive stages within the lifecycle. Concentrations in aquatic plants was higher special in Ceratophyllum demersum Cd (1.89 mg/kg wet substance) and Pb (23,2 mg/kg w.s.).Variations of heavy metal concentrations from different sampling stations are discussed. Results indicate that the levels of lead and cadmium were highest concentration
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References
Boyden, C.R., Phillips D.J.H., (1981). “Seasonal variation and inherent variability of trace elements in oysters and their implications for indicator studies.” Mar. Ecol. Prog. 5: 29–40.
Goodyear, K.L., McNeill S., (1999). “Bioaccumulation of heavy metals by aquatic macroinvertebrates of different feeding guilds: a review.” Science of the Total Environment 229: 1–19.
Maletin S., D.N. (1992). “Heavy metal content in fish from Backwater Tisza (Biser island).” Tiscia 26: 25–28.
Otchere, F.A. (2003). “Heavy metals concentrations and burden in the bivalves (Anadara (Senilia) senilis, Crassostea tulipa and Perna perna) from lagoons in Ghana: Model to describe mechanism of accumulation/excretion.” African Journal of Biotechnology Vol. 2(9)(1684–5315): 280–287.
Timmermans, K.R., Spijkerman E., Tonkes M., (1992). “Cadmium and zinc uptake by two species of aquatic invertebrate predators from dietary and aqueous sources.” Can J. Fish Aquatic Science 49: 655–662.
Wachs B. (2000). “Heavy metal content in Danubian fish.” Arch. Hydrobiol. Suppl. 115/4: 533–556.
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TUDOR, MI., TUDOR, M., DAVID, C., TEODOROF, L., TUDOR, D., IBRAM, O. (2006). HEAVY METALS CONCENTRATIONS IN AQUATIC ENVIRONMENT AND LIVING ORGANISMS IN THE DANUBE DELTA, ROMANIA. In: Simeonov, L., Chirila, E. (eds) Chemicals as Intentional and Accidental Global Environmental Threats. NATO Security through Science Series. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5098-5_40
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DOI: https://doi.org/10.1007/978-1-4020-5098-5_40
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-5096-1
Online ISBN: 978-1-4020-5098-5
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