Climate change affect By: hayden frank and chris NOeun

Climate change has affected many of Earth's species. With higher temperatures and less ice caps many species are being greatly affected; and with the average global sea level expected to rise 7 - 23 inches before the end of the century many species might go extinct.

One animal that would be greatly affected by climate change are polar bears. Polar bear's main prey is seals and without sea ice polar bears cannot enough seals. Polar bears are raised and taught to sit and wait at a air pocket in ice for a seal to come up and then attack, and since polar bears struggle to get food any other way ice melting is a very bad thing for them. Without eating enough seals they are unlikely to gain enough weight to survive their autum to summer fast. Without human intervention polar bears are predicted to be extinct in 30 - 40 years.

Why the population is declining? The bears eat little to nothing on land because they are taught at a yong age only how to hunt on ice, but since 70 years ago the ice free period on the Hudson Bay is giving them less time to hunt during the critical season when seal pups are born.
Over the past 50 years, the west coast of the Antarctic Peninsula has been one of the most rapidly-warming parts of the planet, the British Antarctic survey reports. Here, annual mean air tempatures have risen by nearly 3*C, with the greatest warming occurring in the winter season.

Affect on Emperor Penguins.

Pack ice extent reaches its minimum in late summer. At this time, however, ice is still essential as a platform for creched chicks before they fledge, and later, for adults so that they can successfully moult. The platform is needed for growing chicks and for moulting adults as they are unable to survive without their waterproof feathers. Early ice break-up in warm years has caused chicks to be swept into the ocean and drown.

Should global temperatures increase by 2*C, scientist estimate that colonies to the north of 70 S would become unavailable. This means that 40 percent of all the colonies, and almost 40 percent of the total breeding population of Emperor Penguins would be affected.

Not only are polar bears and emperor penguins affected, but also various species of seabirds such as sooty terns and black noddies that nest at the Great Barrier Reef. As global temperatures rise scientists predict that the sea level will rise a total of 3 feet within this century because of the melting glaciers due to climate change.

Due to the rising waters many seabird species nesting grounds may be destroyed due to rainfall as well as the the rising waters of the ocean. Many seabirds on the Great Barrier Reef reside in low vegetation and schrubs, but a majority lay their eggs on the ground. As sea levels rise this will cause erosion to the land threatening the growth of vegetation and plant growth which are the main sources of nutrients for many seabirds and also the nesting grounds used by a majority of birds. Once the nesting grounds have been destroyed by rising waters and erosion the birds have nowhere else to nest which in turn would cause a dangerous drop in the seabird population.

Credits:

Created with images by skeeze - "polar bear ice arctic" • MemoryCatcher - "emperor penguins antarctic life" • Unsplash - "chinstrap penguin penguins antarctica" • HarmonyonPlanetEarth - "Black Noddy | CBC Midway | 2012-12-20at16-55-00"

Report Abuse

If you feel that this video content violates the Adobe Terms of Use, you may report this content by filling out this quick form.

To report a Copyright Violation, please follow Section 17 in the Terms of Use.