What change in the ecosystem by the course of succession

Physiological conditions, Under physiological conditions,
April 16, 2020
At what time the planet”s population reaches 10,000
April 17, 2020

What change in the ecosystem by the course of succession

Q. Throughout the summer of 1988 fires, burned much of Yellowstone national park, leaving a patchwork of burned and unburned areas. In the year following the fires, wildflowers sprouted in all burned areas, closely followed in subsequent years by seedlings of the trees that normally grow in the area, such as aspens and lodge poles pines.

What changes in the Ecosystem will take place all through the course of succession?