Unformatted text preview: es can happen so fast that
species may not be able to migrate or evolve. Combination of ecological responses,
changes in distribution of species, and
evolutionary responses. Species are evolving
as their climate changes. We need to keep track of the idea of how are
species going to respond (migration vs.
adaptation/tolerance). 1 4/3/2013 1. Pronghorn “antelope”: migratory grazers
of open grassland (BIO120) This particular area is rich is natural gas.
Humans have a strong desire to extract it out
of the ground. Migration corridor of one herd: right
through Green River natural gas fields What pronghorn are good at: Fastest North American mammal—by far! Why they are so good at it:
went extinct 11,000 YBP Evolved to escape American cheetahs?
downside is that they are not very good at
getting through barb-wired fences that have
been put up to demarcate areas to be
explored for natural gas extraction. Skeleton convergently
similar to true African
cheetah, but mDNA
indicates more closely
related to American
cougar 2 4/3/2013 What pronghorn are bad at: Sad history of whole herds killed at fences in winter Climate change migrations will be hampered by
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