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Climate Change and Speciation

Climate Change and Speciation. How Species Respond to Changes in Climate and How News Species From. Migration. Behavior Change. Reindeer expected to disappear from current range by end of century Marmots end hibernation 3 weeks earlier than they did 30 years ago

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Climate Change and Speciation

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  1. Climate Change and Speciation How Species Respond to Changes in Climate and How News Species From

  2. Migration

  3. Behavior Change • Reindeer expected to disappear from current range by end of century • Marmots end hibernation 3 weeks earlier than they did 30 years ago • Canadian red squirrels breeding about 18 days earlier • Red foxes spreading north -- territory occupied by their arctic cousins • Polar bears thinner than those of 20 years ago • Elephant seal pups leaner because prey is migrating to cooler waters • Loggerhead sea turtles laying eggs 10 days earlier than 15 years ago • Rising temp affect the sex of Hawkbill turtle hatchlings—more females • Warm water organisms (barnacles, mollusks, tidal snails) moving north • Fish species moving north in search of cooler waters • Tree swallows laying eggs about nine days earlier 40 years ago • Common murres breeding 24 days earlier than a decade ago • Plants thriving in areas where growth was limited before • Plants like columbines and wild geraniums blooming earlier • Edith's checkerspot butterflies are moving northward

  4. Example • Horses in Oregon

  5. Punctuated Equilibrium

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