What allows secondary succession to occur after a wildfire?

Secondary succession occurs in environments that have experienced disturbances, such as wildfires, which leave the soil intact while destroying the above-ground biomass. In the aftermath of a wildfire, the return of nutrients to the soil from dead organisms significantly contributes to the process of secondary succession.

When organisms die, their decomposition adds organic matter to the soil, enriching it with nutrients essential for plant growth. This nutrient-rich soil supports the establishment of new plant communities, which can help stabilize the ecosystem and promote further growth. As these plants grow, they provide habitat for various animal species, contribute to soil development, and enhance biodiversity.

The dynamics of secondary succession can be quite rapid due to the pre-existing seed bank in the soil or the proximity of surviving plants which can regenerate quickly. Thus, the replenishment of soil nutrients is a crucial factor that supports the recovery and regrowth of vegetation after the disturbance caused by a wildfire.