Levels of Hg, Cd, Pb, Cu, Zn, Fe, and Mn were assessed by using Posidonia oceanica as a bioindicator in the Gulf of Naples (southern Italy). Lepidochronology, which enables retroactive dating of scales and rhizomes of this seagrass, was combined with atomic spectrometry to assess temporal trends of trace elements in dated scales and rhizomes over a 10-year period. Lepidochronology occasionally has been used to monitor Hg in dated scales, but never has been used to determine concentrations of other trace elements in dated rhizomes. Data were compared between various structural parts of seagrass and between sampling sites. Concentrations of some elements found in dated scales or rhizomes showed a similar trend in most of the sites; increasing for Hg and Cu and decreasing for Pb, Fe, and Zn. Contaminant levels indicated by seagrass meadows varied from metal to metal. Concentrations of Hg, Cd, and Pb fell within the ranges measured in other areas considered to have low levels of heavy metal pollution, whereas Cu, Mn, and Zn had higher concentrations only in some years. However, on the basis of other studies, none of the sampling sites are considered to have high contamination levels.
Scheda prodotto non validato
Scheda prodotto in fase di analisi da parte dello staff di validazione
|Titolo:||Posidonia oceanica as a biomonitor of trace elements in the gulf of Naples: temporal trends by lepidochronology|
|Citazione:||Ancora, S., Bianchi, N., Butini, A., Buia, M.C., Gambi, M.C., & Leonzio, C. (2004). Posidonia oceanica as a biomonitor of trace elements in the gulf of Naples: temporal trends by lepidochronology. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, 23(5), 1093-1099.|
|Appare nelle tipologie:||1.1 Articolo in rivista|