A group of researchers say they have established a new biomarker for how stressed polar bears are about climate change.
Last year, a team reported that fluctuations in climate and ice cover are closely related to stress among polar bears in East Greenland as indicated by levels of the stress hormone cortisol in hair samples. The team is hopeful this type of analysis will be beneficial once others learn that it can now be done with much greater reliability.
"Nobody else has done this so far," says Jerrold Meyer of the University of Massachusetts Amherst, who calls himself a behavioral endocrinologist. "We've not only been one of the key developers of the technique but we have also have worked very hard to demonstrate its reliability and validity. In collaboration with Melinda Novak, chair of the psychology department, we were among the first to show in a major controlled study that a prolonged or major life stress does lead to a demonstrable increase in cortisol in hair. Now we're making the technique available to others and we hope it spurs new collaborations with our lab."
Monday, January 27, 2014
Maybe the bears were stressed by warmists chasing them around with tweezers.
Posted by traderrob at 6:24 AM