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How does active restoration change or speed up ecological succession?
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ecological restoration
Wetland restoration along the Târnava Mică (Tîrnava Mică) River in Romania. A former gravel mine (left) was transformed into a functional wetland (right).
Active restoration is employed when an ecosystem has crossed a threshold of degradation, rendering it unable to recover on its own or causing it to recover too slowly through natural ecological succession.1
By intervening, restorationists can initiate or accelerate the recovery process or actively alter the trajectory of succession. This is achieved through several key strategies:1
- Soil and Land Rehabilitation: Specialists restore the original chemical, biological, and physical characteristics of the environment. This includes adjusting pH levels, inoculating soil with beneficial microorganisms, and using tilling to improve aeration and root penetration.1
- Stabilization: Tools such as physical structures, mulch blankets, and strategic plantings are used to control erosion and stabilize slopes, creating a stable foundation for new growth.1
- Revegetation: After site preparation, restorationists select specific seeds, seedlings, or cuttings to rebuild the plant community. By choosing species suited to local conditions, they guide the site toward a desired ecological state.1
- Process Reestablishment: To ensure long-term sustainability, restorationists may reintroduce natural disturbances, such as flooding or prescribed fire, which are essential for maintaining certain ecosystems.1