| levels and temporal trends (1988-1999) of polybrominated diphenyl ethers in beluga whales (delphinapterus leucas) from the st. lawrence estuary, canada. | polybrominated diphenyl ethers (pbdes) were determined in blubber samples of 54 stranded adult beluga whales (delphinapterus leucas) collected between 1988 and 1999 in the st. lawrence estuary (sle), quebec, canada. summed concentrations of 10 pbde congeners (sigmapbdes) measured in beluga samples varied between 20 and almost 1000 ng/g wet weight. according to the pbde concentrations in marine mammals reported in the scientific literature, sle belugas appear to be relatively lightly contaminated ... | 2004 | 15224724 |
| spatial and temporal trends of contaminants in canadian arctic freshwater and terrestrial ecosystems: a review. | the state of knowledge of contaminants in canadian arctic biota of the freshwater and terrestrial ecosystems has advanced enormously since the publication of the first major reviews by lockhart et al. and thomas et al. in the science of the total environment in 1992. the most significant gains are new knowledge of spatial trends of organochlorines and heavy metal contaminants in terrestrial animals, such as caribou and mink, and in waterfowl, where no information was previously available. spatia ... | 1999 | 10466229 |