An examination of spatial variation in mercury concentrations in otter (Lutra canadensis) in south-central Ontario

Autor:	MacDonald, K. S., Evans, R. D., Joachim, D. G., Addison, E. M, Villenueve, J. Y.
Předmět:	*Bioaccumulation *Mercury North American river otter Spatial variation
Zdroj:	Science of the Total Environment. 1998, Vol. 213 Issue 1-3, p239. 0p.
Abstrakt:	Hair samples were collected from otter (Lutra canadensis) trapped inseveral parts of south-central Ontario, Canada. The concentrations of total Hg in hair were compared with methyl mercury concentrations in liver tissues from the same individuals to determine if hair is a suitable monitoring tissue. Hg in the two tissues was significantly correlated. Hair was used to monitor Hg in 51 individuals from four townships. The concentrations of total Hg in hair ranged from 4 to 20 micro g/g. No significant variation among the four sample regions existed, Generally the highest concentrations were found in the youngest members of the population. Some possible explanations for the observations are presented. [ABSTRACT FROM AUTHOR]
Databáze:	GreenFILE
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