| influence of carbon and lipid sources on variation of mercury and other trace elements in polar bears (ursus maritimus). | in the present study, the authors investigated the influence of carbon and lipid sources on regional differences in liver trace element (as, cd, cu, total hg, mn, pb, rb, se, and zn) concentrations measured in polar bears (ursus maritimus) (n = 121) from 10 alaskan, canadian arctic, and east greenland subpopulations. carbon and lipid sources were assessed using δ(13) c in muscle tissue and fatty acid (fa) profiles in subcutaneous adipose tissue as chemical tracers. a negative relationship betwee ... | 2012 | 22987581 |
| supplementary diet components of little auk chicks in two contrasting regions on the west spitsbergen coast. | the complete diet composition structure of the most numerous planktivorous sea bird, little auk (alle alle), in the european arctic, is still not fully recognized. although regular constituents of little auk chick diets, the copepods, calanus glacialis and c. finmarchicus have been previously relatively well described, more taxa were frequent ingredients of the bird's meals. therefore, the role of the little auks supplementary diet components (sdcs) at two colonies in the svalbard archipelago, h ... | 2017 | 26069395 |
| the acute toxicity of chemically and physically dispersed crude oil to key arctic species under arctic conditions during the open water season. | the acute toxicity of physically and chemically dispersed crude oil and the dispersant corexit 9500 were evaluated for key arctic species. the copepod calanus glacialis, juvenile arctic cod (boreogadus saida), and larval sculpin (myoxocephalus sp.) were tested under conditions representative of the beaufort and chukchi seas during the ice-free season. the toxicity of 3 water-accommodated fractions (waf) of alaska north slope crude oil was examined with spiked, declining exposures. a dispersant-o ... | 2013 | 23765555 |