1.0Climate Change Dispatchhttps://climatechangedispatch.comThomas Richardhttps://climatechangedispatch.com/author/ccdeditor/Unstable thinking about polar-bear habitatrich600338<blockquote class="wp-embedded-content" data-secret="cV0lxfK6GE"><a href="https://climatechangedispatch.com/unstable-thinking-about-polar-bear-habitat/">Unstable thinking about polar-bear habitat</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://climatechangedispatch.com/unstable-thinking-about-polar-bear-habitat/embed/#?secret=cV0lxfK6GE" width="600" height="338" title="“Unstable thinking about polar-bear habitat” — Climate Change Dispatch" data-secret="cV0lxfK6GE" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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We are told that summer sea-ice extent is declining and that this threatens the health and population size of polar bears. Ringed seals, the primary prey of polar bears, are likely to also be affected. What we are not told is that thick sea ice in late winter and early spring have caused greater devastation to polar-bear populations than recent summer sea ice declines. Wide variations in spring sea-ice habitat are a natural phenomenon and some have been known about for hundreds of years. They occur independently of any summer sea-ice changes that may be due to human-caused global warming.https://climatechangedispatch.com/wp-content/uploads/images_pics8_polar_bears.jpg