 It is also projected that the annual mean air temperature will increase by 1 °C by 2020, 2 to 3 °C by 2050, and 4 to 5 °C by 2080 (Huntington & Weller 2005).Our current scientific understand still has a long way to go to truly understand the implications for these projections.Top predators must coordinate their activities with their immediate lower prey on the trophic exchange.