By: Kamaya Hayes
Summary. Studies have shown that the most prominent reason of habitat loss is climate change. Due to that, there has been a 40% decline in polar bears at the Southern Beaufort Sea. Nearly all of the 19 sub populations of polar bears from the Beaufort sea to the Siberian Arctic, would face being wiped out because of the loss of sea ice. With more sea ice melting each year the bears are forced onto land, away from their food supply. Ice melting can lead to prolonged fast and reduced nursing of cubs by mother. Also, the mothers not being able to eat properly can cause them to be underweight. Being underweight leads to less cubs being born and the ones that are born are much smaller than usual. Some of the polar bears remain on the ice year round, but most areas are melting in the spring and summer, which forces them ashore as well. As the regions warm, ice in the summer has declined by about 13 percent per decade, compared to 1981-2010 averages. In 2010, 120 million acres of northern Alaska was declared as critical habitat for polar bears under the Endangered Species Act. Temperature in the Arctic is rising at least twice a week and sea ice coverage is diminishing by nearly four percent per decade. Polar bears could become nearly extinct by the end of the century due to shrinking of ice, if global warming continues. So as you can tell the polar bears are at a very vulnerable state.
Why we should care? I think you should care about this topic because animals homes are being destroyed. You should take into consideration as if it were your family losing their home. Also, climate change and global warming are effecting us everyday as well.
I found this topic interesting because i love animals. I think we should treat them with the same respect as we do each other. Animals have families just like us humans and the fact that we played a part in the decline is unsettling. So we should do everything we can to make matters better for them. There isn’t just one type of polar bear, there are several different bears that live numerous parts of the world and there all at a decline. So think its time we all try and figure out a solution to help the beautiful creatures.
Science in Action.
Dr. Andrew Derocher is a Professor of Biology at the University of Alberta in Edmonton, Canada.
Dr. Andrew Derocher studies the Artic, polar bears, carnivores, ecology, behavior, and climate change. His current research interest are conservation, ecology, and management of large mammals (mainly polar bears). He currently asses the effects of climate change and toxic chemicals on polar bears. He believes his research is to improve ones understanding of large carnivores with specific reference to how they are affected by human activities. For over 38 years his focus has been on polar bears, but he is still invested in his other studies. His research is revenant to my topic because that’s what my summary is about. It’s about climate change and how it caused loss of polar bear habitat.