Overall, however, the degree of mercury exposure observed was low for songbirds breeding in the subarctic. ![]() There was an indication that mercury concentrations of breeding songbirds may vary by diet composition, with non-invertivorous species possibly tending towards lower mercury concentrations. Most species sampled showed relatively low mercury, but some individuals had high enough concentrations to be subject to adverse physiological and behavioral effects. In this limited sample of songbird feathers, mercury concentrations ranged from near zero to 6.34 μg/g. ![]() ![]() Mercury levels found in feathers indicates exposure during the period of feather growth, which we assume largely took place on the breeding ground. Overall, we analyzed 343 feather samples collected in 2015–2017 for their total mercury content. In this preliminary study, we examined mercury exposure in 12 migratory songbird species breeding in Denali National Park & Preserve, in subarctic interior Alaska. Passerines appear to have a greater sensitivity to mercury than other avian orders, and little data exists for mercury exposure in songbirds breeding at high latitudes. Please note* There are some walking canes that come to us with custom tips that are built into theĬane.A preliminary assessment of mercury in the feathers of migratory songbirds breeding in the North American subarctic Abstract Canes can always be shortened but may not be Please alwaysĬheck the item upon delivery to confirm the requested size. PleaseĬontact customer service to be sure your cane is able to be custom sized or for more instructions. Please keep in mind that most canes can be cut easily at home. Up to 1/4” in length from requested size. To the exact requested measurement, cane handle shapes and cane shaft variations will make the cut length vary In most cases, sized canes will ship the same day. USED LIKE A CRUTCH FOR FULL WEIGHT SUPPORT, CANES ARE INTENDED ONLY FOR BALANCE. THIS INFORMATION IN NO WAY REPLACES A MEDICAL PROFESSIONAL'S RECOMMENDATION. The estimated cane length would be 33.5 inches for the above example.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |