000 02866cam  2200397za 4500
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008181030s1984    oncbd   ob   f000 0 eng d
020 |z0662133277|q(print)
040 |aCaOODSP|beng
041 |aeng|bfre
043 |an-cn-on
0861 |aEn36-503/131E-PDF|zEn36-503/131E
24503|aAn investigation of contaminants and benthic communities in the major rivers of the Hudson Bay Lowland, Ontario |h[electronic resource] / |cR.C. McCrea ... [et al.].
260 |aBurlington, Ont. : |bInland Waters Directorate, Ontario Region, Water Quality Branch, |c1984.
300 |av, 47 p. : |bchart, maps.
4901 |aTechnical bulletin ; |vno. 131
500 |aIssued also in French under title: Polluants et communautés benthiques des principales rivières des basses terres de la Baie d'Hudson (Ontario).
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references (p. 6-7).
5203 |a"A comprehensive water quality study was conducted June 4-11, 1981, near the mouths of the five major rivers of the Hudson Bay Lowland. A wide range of trace organic and trace metal contaminants were measured in water, fish, suspended and bottom sediments. Although levels of organochlorine pesticides were generally low in the water samples, a wide range of compounds were detected. Total PCB's (polychlorinated biphenyls), αz-BHC and p,p'-DDE were most often detected in fish and the concentrations of all of the compounds present were very low. Polychlorinated biphenyls were the only compounds detected in suspended sediment samples and all trace organic contaminants were below the detection limit in bottom sediment. The results of the survey conducted to determine benthic structure indicate that a large number of benthic species were present in each river, but that no one species predominated. The Chironomidae and Tubificidae families were the two major taxonomic groups in terms of numbers of individuals in each river"--Abstract, p. v.
546 |aIncludes abstract in French.
693 4|aWater quality
693 4|aWater pollution
693 4|aBenthos
693 4|aOntario, Northern
693 4|aHudson Bay Region
7001 |aMcCrea, R. C.
7101 |aCanada. |bEnvironment Canada.
7101 |aCanada. |bInland Waters Directorate. |bOntario Region. |bWater Quality Branch.
77508|tPolluants et communautés benthiques des principales rivières des basses terres de la Baie d'Hudson (Ontario) |w(CaOODSP)9.863896
830#0|aTechnical bulletin (Canada. Inland Waters Directorate)|vno. 131.|w(CaOODSP)9.861123
85640|qPDF|s1.48 MB|uhttps://publications.gc.ca/collections/collection_2018/eccc/en36-503/En36-503-131-eng.pdf