https://www.usgs.gov/publications/regional-contamination-versus-regional-dietary-differences-understanding-geographic
The relative contribution of regional contamination versus dietary differences to geographic variation in polar bear (Ursus maritimus) contaminant levels is...
geographic variationregionalcontaminationversusdietary
https://www.usgs.gov/publications/geographic-variation-pcb-congeners-polar-bears-ursus-maritimus-svalbard-east-chukchi
We present data on geographic variation in polychlorinated biphenyl (PCB) congeners in adult female polar bears (Ursus maritimus) from Svalbard eastward to the...
geographic variationpolar bearsursus maritimuspcbcongeners