00000nam 2200000za 4500 9.613117 CaOODSP 20250909162049 ta 150406|1996||||xxc||||| f|0| 0 eng d 0-662-24712-4 1192-3571 CaOODSP eng n-cn--- R71-49/3-97E Northern River Basins Study (Canada)‏. Assessment of trophic position and food sources using stable isotopes of sulfur, carbon and nitrogen : Peace and Athabasca rivers 1992 and 1993 / by R. H. Hesslein and P. S. Ramlal. Edmonton - Alberta : Northern River Basins Study 1996. 37p. in various pagings. : graphs, map, references, tables ; 28 cm. Northern River Basins Study project report 1192-3571 No. 97 "A study was carried out of the stable isotope composition of sulphur, carbon, and nitrogen in the tissues of fish from two locations in the Athabasca River, 630km, near the town of Athabasca, and 300km, near the town of Fort McMurray, and two locations in the Peace River, site IS1 near Many Islands, about 950 km from the mouth, and IS11 just upstream from the confluence with the Slave River. Fish species analyzed consisted of burbot, walleye, mountain whitefish, northern pike, goldeye, longnose sucker, trout perch, emerald shiner, flathead chub, and lake chub. A set of examples (Sample Set#1) provided by the Northern River Basins Study consisting of biofilm, invertebrates, and fish from the upper Athabasca River was also analyzed. Water samples from the winter oxygen survey of the Athabasca River and its tributaries carried out by Alberta Environment were analyzed for sulfer isotopes in dissolved sulfate and carbon isotopes in dissolved organic carbon. The purpose of the study was to extend the data base on feeding and movement of the fish which could be derived from the sulphur and carbon isotope data, and to use the nitrogen isotope data to define the trophic positions of the organisms."--Report Summary. Issued also in electronic format. A study was carried out of the stable isotope composition of sulphur, carbon, and nitrogen in the tissues of fish from two locations in the Athabasca River, 630km, near the town of Athabasca, and 300km, near the town of Fort McMurray, and two locations in the Peace River, site IS1 near Many Islands, about 950 km from the mouth, and IS11 just upstream from the confluence with the Slave River. Fish species analyzed consisted of burbot, walleye, mountain whitefish, northern pike, goldeye, longnose sucker, trout perch, emerald shiner, flathead chub, and lake chub. A set of examples (Sample Set#1) provided by the Northern River Basins Study consisting of biofilm, invertebrates, and fish from the upper Athabasca River was also analyzed. Water samples from the winter oxygen survey of the Athabasca River and its tributaries carried out by Alberta Environment were analyzed for sulfer isotopes in dissolved sulfate and carbon isotopes in dissolved organic carbon. The purpose of the study was to extend the data base on feeding and movement of the fish which could be derived from the sulphur and carbon isotope data, and to use the nitrogen isotope data to define the trophic positions of the organisms.--Report Summary Ring binding 96-28 1996-07-12 Fish gcpds Ramlal, P. S. Hesslein, R. H. Assessment of trophic position and food sources using stable isotopes of sulfur, carbon and nitrogen : (CaOODSP)9.955020 Northern River Basins Study project report, 1192-3571 No. 97 (CaOODSP)9.514881 Project 3131-C1