أعرض في EDS

Ecotoxicity Assessment of Contaminated Dredged Material with the Marine Amphipod Corophium volutator

التفاصيل البيبلوغرافية
العنوان: Ecotoxicity Assessment of Contaminated Dredged Material with the Marine Amphipod Corophium volutator
المؤلفون: N.M. van Straalen, S. Ciarelli, J. Stronkhorst, W. A. P. M. A. Vonck
المساهمون: Animal Ecology
المصدر: Ciarelli, S, Vonck, W A P M A, van Straalen, N M & Stronkhorst, J 1998, ' Ecotoxicity assessment of contaminated dredged material with the marine amphipod Corophium volutator. ', Archives of Environmental Contamination and Toxicology, vol. 34, pp. 350-356 . https://doi.org/10.1007/s002449900329
Archives of Environmental Contamination and Toxicology, 34, 350-356. Springer New York
بيانات النشر: Springer Science and Business Media LLC, 1998.
سنة النشر: 1998
مصطلحات موضوعية: SDG 16 - Peace, Amphipoda, Health, Toxicology and Mutagenesis, SDG 16 - Peace, Justice and Strong Institutions, Sediment, General Medicine, Biology, Toxicology, biology.organism_classification, Pollution, Justice and Strong Institutions, Dry weight, Toxicity, Ecotoxicology, SDG 14 - Life Below Water, Ecotoxicity, Corophium volutator, Water pollution
الوصف: The incorporation of toxicological data from bioas- says can improve the present system of sediment quality criteria in the Netherlands. The use of acute lethality toxicity tests alone does not however provide sufficient discrimination and sensitiv- ity for predicting ecological effects of slightly and moderately contaminated dredged material. Sublethal endpoints are needed for the assessment of environmental hazards of such dredged material. In this study, two approaches were used to identify toxicity of marine sediments collected from 16 locations classified as ''slightly and moderately contaminated'' on the basis of chemical data: (1) a comparison of growth vs. mortality as different endpoints in the marine amphipod Corophium volutator (Pallas); (2) an investigation on the use of sediment dilutions to characterize the degree of toxicity. The influence of sediment storage time on toxicity was also evaluated. In four out of 16 locations, mortality over 10 days of exposure ranged 80-100%; in two out of 16 locations mortality ranged 40-60%. In the other 10 locations, mortality was below 15%. Results on growth showed that in all locations final dry weight values were significantly lower (a factor of 1.5 to 3) than in controls. Results of dilution experiments showed that if sediments were diluted with a reference sediment of similar physicochemical character- istics, total concentrations of metals, mineral oil, and PAHs decreased as expected and so did the effects on C. volutator. In the 100% contaminated sediments growth was reduced by 32-60% compared to controls. The dilution rate necessary to reduce toxicity to the EC10 value for growth of C. volutator was considered an appropriate endpoint for the evaluation. When sediments were stored for a period of 3-5 months at 4°C and retested, effects on mortality and growth decreased, although some effects on growth were still measured after 5 months of storage. The experiments illustrate the usefulness of ecotoxicity assessment to evaluate contaminted dredged material. Chemical analyses are used to determine the concentration of contaminants in estuarine sediments, but the complexity of sediment-contaminant interactions makes it difficult to predict bioavailability and toxicity from chemical analysis alone (Schle- kat et al. 1992). Sediment toxicity tests have been developed for identifying contaminated areas by using whole sediments or sediment dilutions (DeWitt et al. 1989; Pastorak and Becker
تدمد: 1432-0703
0090-4341
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::456cf47b69765f9d95e74d1bd43cfd86
https://doi.org/10.1007/s002449900329
حقوق: CLOSED
رقم الأكسشن: edsair.doi.dedup.....456cf47b69765f9d95e74d1bd43cfd86
قاعدة البيانات: OpenAIRE
الوصف
تدمد:14320703
00904341