Science & Life Skills

Learn how nature rebuilds itself after disasters and why change is good for ecosystems.

We learned that ecological succession is how communities change over time after disturbances, and that these changes actually make ecosystems better in the long run.

We learned about primary succession, which happens when organisms populate a completely lifeless area for the first time, like after an asteroid hit or volcano.

We learned that pioneer species are the first to move into lifeless areas because there's no competition, and that plants are the most important part of succession.

We learned that succession never really stops because change is constant, and that even small disturbances like a falling tree can create new microclimates in the forest.

We learned about the intermediate disturbance hypothesis, which says that medium-sized disturbances create the most biodiversity because they create many different niches.

We learned that preventing forest fires for too long led to catastrophic fires like the one in Yellowstone, but now those areas have recovered with beautiful biodiversity.

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