title: Evaluation of phytotoxicity of seaport sediments aged artificially by rotary leaching in the framework of a quarry deposit scenario.
abstract: In the framework of an ecological risk assessment of seaport sediments for terrestrial ecosystems when deposited in quarries, we simulated the "ageing" of sediments exposed to rain. This experiment highlighted an inflection point at the solid/liquid ratio 1/25, after which the extraction of pollutants increases moderately. The raw sediments studied inhibited the germination of Lolium perenne and Armeria maritima (a halophytic species) seeds. Furthermore, they affected the early development of L.perenne. The same sediments, leached at a ratio of 1/25, presented a reduction of acute (germination) and chronic (growth) phytotoxicity. The bioconcentration factors of the metals studied decreased with the leached sediment, except for Cu which was still clearly identified in root parts. Thus rotary leaching tests and phytotoxicity bioassays can be used to provide an initial assessment of the ability of plants, particularly halophytes, to colonize deposits of dredged seaport sediments.
authors.affiliation: Université de Lyon; CNRS, UMR 5023 LEHNA; Université Lyon 1; ENTPE, Vaulx-en-Velin, 2 rue Maurice Audin, F-69518, France. Electronic address: bedell@entpe.fr.
authors.forename: J-P
authors.initials: JP
authors.lastname: Bedell
authors.affiliation: Université de Lyon; CNRS, UMR 5023 LEHNA; Université Lyon 1; ENTPE, Vaulx-en-Velin, 2 rue Maurice Audin, F-69518, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Ferro
authors.affiliation: POLDEN, 66 Bd du 11 Novembre, Bat. CEI, Villeurbanne F-69621, France.
authors.forename: C
authors.initials: C
authors.lastname: Bazin
authors.affiliation: Université de Lyon; CNRS, UMR 5023 LEHNA; Université Lyon 1; ENTPE, Vaulx-en-Velin, 2 rue Maurice Audin, F-69518, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Perrodin
mesh_terms: D019015:Geologic Sediments / Q000737:chemistry*; D018525:Germination / Q000187:drug effects; D015386:Hazardous Substances; D006801:Humans; D008129:Lolium / Q000187:drug effects / Q000502:physiology; D019216:Metals, Heavy / Q000032:analysis* / Q000633:toxicity; D029606:Plumbaginaceae / Q000187:drug effects / Q000502:physiology; D012037:Refuse Disposal / Q000379:methods*; D018570:Risk Assessment / Q000379:methods*; D012989:Soil Pollutants / Q000032:analysis* / Q000633:toxicity
chemical_list: D015386:Hazardous Substances; D019216:Metals, Heavy; D012989:Soil Pollutants
keywords: Ageing; Armeria maritima; Dredged seaport sediments; Leaching; Lolium perenne; Phytotoxicity