Ecological Succession: Change is Good – Crash Course Ecology #6


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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, biodiverse mosaics.

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Table of Contents
1. Primary Succession 1:56:1
2. Secondary Succession 3:36
3. Climax Community Model 5:11
4. Intermediate Disturbance Hypothesis 7:25:1

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41 thoughts on “Ecological Succession: Change is Good – Crash Course Ecology #6

  1. #crashcourse #hankgreen, what are your thoughts on the opinions that the intermediate disturbance theory should be abandoned based on the multiple theoritical problems and lack of empirical support in studies? (Jeremy Fox's paper "The intermediate disturbance theory should be abandoned")

  2. and the current industrial kind of "agriculture" is keeping a monoculture as stable as it can. it's insane.

    you should do an episode on permaculture and teach everyone about that, too.

    let's heal the planet and us in the process!

  3. don't forget the humans who come in and cut damaged or sick trees down. Why leave a pinebeetle ravaged tree behind to catch fire and threaten the rest of the forest? If you give lumbermen the knowledge to take care of their forests they will do so. They have incentive because their livelihood and that of their children depends on there being trees for a long time to come. I like to think that if 3rd world loggers knew anything about succession they'd follow a similar pattern instead of clear cutting.

    Not to mention with dead or dying trees that you cut down, there's the possibility of burying them underground to decompose and maybe even stacking a few promising looking mushrooms or mushroom covered branches on top of them to encourage the fungi to do what they do naturally. We provide the muscle, the fungi feast and provide for the forest 🙂 its called hugelkultur or mound culture, used in midevil Germany to provide long term nourishment for the soil.

    If humans use their muscle we can help mother nature put the healing process on steroids.

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