期刊
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
卷 37, 期 9, 页码 2439-2447出版社
WILEY
DOI: 10.1002/etc.4207
关键词
Meiofauna; Foraminifera; Lead; Mesocosm; Sediment
资金
- Programmi di Ricerca Scientifica di Rilevante Interesse Nazionale
- Ministero dell'Istruzione, dell'Universita e della Ricerca
Lead (Pb) is regarded as a highly toxic element that poses a serious threat to biota. A mesocosm experiment was performed to assess the influence of Pb on meiofaunal (metazoans within 45-500m) and benthic foraminiferal (protozoan) communities. To this end, sediments bearing such communities were incubated in mesocosms, exposed to different levels of Pb in seawater, and monitored for up to 8wk. Concentrations of Pb <1ppm in water did not promote a significant increase of this metal in sediments. Relatively high concentrations of Pb seemed to affect meiofaunal and benthic foraminiferal communities by reducing their richness or diversity, and the abundance of the most sensitive taxa. The mesocosm approach can be considered an effective method to document the responses of meiofaunal and benthic foraminiferal communities to various kinds and concentrations of pollutants over time. This approach allows the evaluation of dose-response relationships, validates the outcomes of field studies, and possibly confirms the sediment quality guidelines and thresholds. Environ Toxicol Chem 2018;37:2439-2447. (c) 2018 SETAC
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