Ecological Succession: Change is Good - Crash Course Ecology #6
In the world of ecology, the only constant is change - but change can be good. Today Hank explains ecological succession and how ecological communities change over time to become beautiful,...
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You remember back in the days right after the Permian-Triassic Extinction Event, when that giant flaming asteroid and those methane explosions killed almost all the organisms on the planet? No, of course you don't, because that happened 250 million years ago when mammals weren't a thing yet. But that's kind of the point of this episode: that asteroid was a disturbance to the ecology of the planet. The flora and fauna and soils were largely wiped out, leaving a blank canvas for the organisms that survived -- and there weren't really all that many of them -- to fill in as they could. What happened after the Permian-Triassic "disturbance" is a dramatic example of ecological succession, how the makeup of a community changes over time, sta...
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You remember back in the days right after the Permian-Triassic Extinction Event, when that giant flaming asteroid and those methane explosions killed almost all the organisms on the planet? No, of course you don't, because that happened 250 million years ago when mammals weren't a thing yet. But that's kind of the point of this episode: that asteroid was a disturbance to the ecology of the planet. The flora and fauna and soils were largely wiped out, leaving a blank canvas for the organisms that survived -- and there weren't really all that many of them -- to fill in as they could. What happened after the Permian-Triassic "disturbance" is a dramatic example of ecological succession, how the makeup of a community changes over time, sta...
