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Chapter VIII

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PRESENTATION OUTLINE

THE FOREST AND THE TREES

Global Warming and the Tropics

GLOBAL WARMING

“Look around you. Kill half of what you see. Or if you’re feeling generous, just kill about a quarter of what you see. That’s what we could be talking about.”

THE ARCTIC

“In the tropics 'evolution had a fair chance,' while in glaciated regions 'it had countless difficulties thrown in its way.' ”

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THE TROPICS

Photo by Theen ...

“What’s important about the tropics is that temperatures there are relatively stable. Thus tropical organisms tend to possess relatively narrow thermal tolerances, and even slight climatic differences, caused, say, by hills or valleys, can constitute insuperable barriers… Populations are thus more easily isolated, and speciation ensues.”

Photo by ozjimbob

“The variety of life is most impoverished at the poles and richest at low latitudes.”

CLIMATE CHANGES

“A version of the Amazon rainforest has existed for many millions of years, since before there even was an Amazon. Thus, in the tropics, there’s been lots of time for diversity to… accumulate.”

Photo by angela7dreams

CHANGING FAST

Photo by MattysFlicks

“If evolution works the way it usually does, then the extinction scenario…starts to look apocalyptic.”

"The countries most impacted are ones with the least ability to respond."

DOMINOES