00000nam 2200000zi 4500 9.880800 CaOODSP 20241203113652 m o d f cr bn||||||||| 191018s1984 ykcab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-yk x8x8 En40-240/84-19E-PDF Allan, R. B., author. Water quality and biological survey of five streams in the vicinity of Stokes Point, Yukon - Beaufort Sea coast / by R.B. Allan and G.R. MacKenzie-Grieve. [Whitehorse, Yukon Territory] : Environment Canada, Environmental Protection Service, Pacific Region, Yukon Branch, 1984. 1 online resource (viii, 56 pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Regional program report ; no. 84-19 "October 1984." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 20-21). "A baseline inventory of water chemistry, sediment, and biological conditions on five streams near Stokes Point and King Point was undertaken by the Environmental Protection Service. The streams investigated included Deep Creek, Babbage, Trail, Crow, and Spring Rivers. Sampling was conducted in August 1982 and August 1983. The streams surveyed had been previously categorized as being either a mountain or tundra stream based on the origin of the headwaters region. The water chemistry of mountain streams was typically higher in pH, conductivity, filterable residue, alkalinity and hardness. This difference was further supported by higher concentrations of extractable calcium and magnesium in both the water and sediment samples from mountain streams. Thirty-five species of benthic invertebrates were identified. Dipterans were the most dominant group both in terms of number of species and number of individuals collected. A new species of amphipod, Synurella sp., was collected. Bottom fauna data indicated that higher densities were associated with clean, gravel substrates and sampling did not show any noticeable differences between the mountain and tundra stream types"--Abstract, page i. Issued also in print format. Includes abstracts in English and French. gccst Watercourses gccst Water quality gccst Sediments gccst Aquatic animals Mackenzie-Grieve, George, author. Canada. Environment Canada. Canada. Environmental Protection Service. Pacific Region. Yukon Branch. Regional program report (Canada. Environmental Protection Service. Pacific Region) no. 84-19. (CaOODSP)9.879151 PDF 2.06 MB https://publications.gc.ca/collections/collection_2019/eccc/en40-240/En40-240-84-19-eng.pdf