Loss of habitat on a large scale.

The idea of loss of habitat resulting from climate change will usually bring to mind micro-organisms and smaller ecosystems being displaced.  While this is also the case, larger animals are also at risk for losing their habitats.  The melting ice is going to leave animals that live in this environment without a home and with little hope of survival.  The polar bear for instance, and underneath the home of the polar bear live whales and other sea creatures that also rely on the presence of the ice for their livelihoods.
Loss of the ice from these habitats will also cause a decline if not a complete depletion of the populations of large animals that reside in such areas.  This is a result that should be avoided at all cost as it would be a shame to allow such devastation to happen.