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008250926e199603##abcdb   ob   f000 0 eng d
020 |a0662247981|q(print)
040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn-ab|an-cn-bc
0861 |aR71-49/3-135E-PDF|zR71-49/3-135E
1001 |aDobson, Evan Peter,|d1966- |eauthor.
24510|aEcotoxicology of suspended and bottom sediments : |bAthabasca, Smoky and Peace Rivers, June 1995 / |cprepared for the Northern River Basins Study under project 2326-E1 by Evan Dobson, Kristin Day and T.B. Reynoldson.
264 1|aEdmonton, Alberta : |bNorthern River Basins Study, |cMarch 1996.
264 4|c©1996
300 |a1 online resource (64 pages in various pagings) : |bcharts, map.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aNorthern River Basins Study project report, |y1192-3571 ; |vno. 135
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references (pages 12-13).
520 |a"In June 1995, samples of whole sediment (five replicates per site) and suspended sediment (one sample per site) were collected from various locations in the Athabasca, Smoky and Peace Rivers, Alberta. Four species of benthic invertebrates, the chironomid Chironomus riparius, the amphipod Hyalella azteca, the mayfly Hexagenia spp. and the oligochaete worm Tubi/ex tubifex were exposed to these samples in 10 to 28 day chronic toxicity tests. The endpoints measured were survival and growth of C. riparius, H. azteca, and Hexagenia spp. and survival and reproduction of T. tubifex. With the exception of the chironomid, some or all of the other species had reduced survival, growth and/or reproductive output when exposed to whole sediments collected from sites AR1, AR5, AR8 and AR 9 in the Athabasca River. These effects were attributed to either the presence of elevated levels of metals (Cu and Ni) at some of the sites and/or the high sand content. Levels of Cu and Ni were slightly above the Lowest Effects Level (LEL) for sediments in Ontario established as a guideline for toxicity to benthic invertebrates"--Report summary.
530 |aIssued also in print format.
650 0|aRiver sediments|xToxicology|zAlberta|zAthabasca River.
650 0|aRiver sediments|xToxicology|zAlberta|zSmoky River.
650 0|aRiver sediments|xToxicology|zPeace River (B.C. and Alta.)
650 0|aAquatic invertebrates|xEffect of sediments on|zAlberta|zAthabasca River.
650 0|aAquatic invertebrates|xEffect of sediments on|zAlberta|zSmoky River.
650 0|aAquatic invertebrates|xEffect of sediments on|zPeace River (B.C. and Alta.)
650 6|aSédiments fluviaux|xToxicologie|zAlberta|zAthabasca, Rivière.
650 6|aSédiments fluviaux|xToxicologie|zAlberta|zSmoky, Rivière.
650 6|aSédiments fluviaux|xToxicologie|zPaix, Rivière de la (C.-B. et Alb.)
650 6|aInvertébrés aquatiques|xEffets des sédiments sur|zAlberta|zAthabasca, Rivière.
650 6|aInvertébrés aquatiques|xEffets des sédiments sur|zAlberta|zSmoky, Rivière.
650 6|aInvertébrés aquatiques|xEffets des sédiments sur|zPaix, Rivière de la (C.-B. et Alb.)
7102 |aNorthern River Basins Study (Canada)‏, |eissuing body.
7760#|tEcotoxicology of suspended and bottom sediments : |w(CaOODSP)9.613152
830#0|aNorthern River Basins Study project report ;|vno. 135.|w(CaOODSP)9.883506
85640|qPDF|s3128 KB|uhttps://publications.gc.ca/collections/collection_2025/eccc/r71/R71-49-3-135-eng.pdf