00000nam 2200000za 4500 9.611191 CaOODSP 20250430120454 ta 150406|1993||||xxc||||| f|0| 0 eng d 0-662-21122-7 1192-3571 CaOODSP eng n-cn--- R71-49/3-21E Northern River Basins Study (Canada)‏. Benthos field collections under-ice sampling : Athabasca River, February and March, 1993 / by M. Dunnigan and S. Millar. Edmonton - Alberta : Northern River Basins Study 1993. 148p. in various pagings. : graphs, illus., maps, references, tables ; 28 cm. Northern River Basins Study project report 1192-3571 No. 21 "The objective of this project was to obtain samples of selected aquatic biota (i.e., invertebrates, "biofilm", and forage fish) from nine sites in the Athabasca River for contaminants analyses and quantitative analyses of invertebrate and biofilm abundance and biomass. Samples for contaminant analyses were destined for organic contaminant (e.g., dioxins, furans, chlorophenols, and polyaromatic hydrocarbons), metal (e.g., arsenic, vanadium, copper, chromium lead, zinc, and methyl mercury) and stable isotope (e.g., carbon, nitrogen, sulphur analyses). Quantitative samples of aquatic invertebrates were required for estimates of abundance and biomass. Quantitative biofilm samples were collected for chlorophyll A and loss on ignition; samples were also retained for taxonomic identification."--Executive summary. The objective of this project was to obtain samples of selected aquatic biota (i.e., invertebrates, biofilm, and forage fish) from nine sites in the Athabasca River for contaminants analyses and quantitative analyses of invertebrate and biofilm abundance and biomass. Samples for contaminant analyses were destined for organic contaminant (e.g., dioxins, furans, chlorophenols, and polyaromatic hydrocarbons), metal (e.g., arsenic, vanadium, copper, chromium lead, zinc, and methyl mercury) and stable isotope (e.g., carbon, nitrogen, sulphur analyses). Quantitative samples of aquatic invertebrates were required for estimates of abundance and biomass. Quantitative biofilm samples were collected for chlorophyll A and loss on ignition; samples were also retained for taxonomic identification.--Executive summary Ring binding Water pollution gcpds Dunnigan, M. Millar, S. Benthos field collections : under-ice sampling, Athabasca River, February and March, 1993 / (CaOODSP)9.950639 Northern River Basins Study project report, 1192-3571 No. 21 (CaOODSP)9.514881