00000000cam 2200000za 4500
0019.855885
003CaOODSP
00520241203113642
007cr |||||||||||
008180426s1986    onca|||#o    f00| 0 eng d
040 |aCaOODSP|beng
043 |an-cn-on
0861 |aCW69-1/56E-PDF
1001 |aBarr, J. F. |q(Jack Francis)
24510|aPopulation dynamics of the common loon (Gavia immer) associated with mercury-contaminated waters in northwestern Ontario |h[electronic resource] / |cJ.F. Barr.
260 |a[Ottawa] : |bCanadian Wildlife Service, |cc1986.
300 |a25 p. : |bill.
4901 |aOccasional paper ; |vno. 56
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
500 |aIssued also in French under title: La dynamique des populations de huards à collier (Gavia immer) et les eaux contaminées au mercure dans le nord-ouest de l'Ontario.
504 |aIncludes bibliographical references.
5203 |a"Common Loons on lakes of the Wabigoon-English River system, northwestern Ontario, were adversely affected by unnatural, unpredictable water-Ievel fluctuations and turbidity, and by mercury contamination. Extensive, man-induced water-level changes resulted in increased desertion and predation of clutches. Increasing turbidity resulted primarily in a decrease in the number of potential territories occupied. A strong negative correlation existed between the successful use of territories by breeding loons and mercury contamination"--Abstract.
69207|2gccst|aAquatic birds
69207|2gccst|aMercury
69207|2gccst|aEnvironmental impact
693 4|aLoons
7101 |aCanada. |bEnvironment Canada.
7102 |aCanadian Wildlife Service.
77508|tLa dynamique des populations de Huards à collier (Gavia immer) et les eaux contaminées au mercure dans le nord-ouest de l'Ontario |w(CaOODSP)9.856571
830#0|aOccasional paper (Canadian Wildlife Service)|vno. 56|w(CaOODSP)9.504780
85640|qPDF|s3.85 MB|uhttps://publications.gc.ca/collections/collection_2018/eccc/CW69-1-56-eng.pdf