This is a climax community. a forest to be exact. It's full of wildlife, including the oak trees, woodpeckers, tree frogs, humming birds, deer, and many others. It's a nice ecosystem. It'd be a shame if something bad happened to it.
OH NO! A wildfire has broke out! Now it is burning everything in it's path, killing dozens of animals and harming the trees and ecosystem. This is the disturbance that will cause primary succesion.
Some more pioneer species
The once lively ecosystem, now lays in a silent hush. The soil is not gone but empty. It is covered in rocks and soil now. Then the pioneer species comes in, that species is wildflowers, which was planted after some birds dropped them by accident.
A new climax community.
The first animal species has moved in! The woodpecker, who happens to love wildflowers, has moved in. Fortunately, a tree has started growing for that woodpecker. That tree is an oak tree
The oak tree, now fully grown, attracts tree rats. It's been raining a lot, causing a small pond to form. Thankfully there hasn't been a flood. The pond attracts frogs, and the tree rats attract red foxes.
Carried by some crows, more seeds have been planted. The rose begins to blossom, attracting many insects, including bees. The crows have moved in as well, unfortunately. Some more oak trees have grown over the past 20-100 years, and the community is now thriving.