Lably
Skip to content

Ecological restoration

Scientific study of renewing and restoring ecosystems

  • 25 min read
  • 10 chapters
a small area of wetland regeneration in south-eastern Australia, recently constructed.
Nick carson at English Wikipedia · Public domain

Learn it on Lably

Habitat restoration involves the deliberate rehabilitation of a specific area to reestablish a functional ecosystem. This may differ from historical baselines (the ecosystem's original condition at a particular point in time). To achieve successful habitat restoration, it is essential to understand the life cycles and interactions of species, as well as the essential elements such as food, water, nutrients, space, and shelter needed to support species populations.

Scientists estimate that the current species extinction rate, or the rate of the Holocene extinction, is 1,000 to 10,000 times higher than the normal, background rate. Habitat loss is a leading cause of species extinctions and ecosystem service decline. Two methods have been identified to slow the rate of species extinction and ecosystem service decline: conservation of quality habitat and restoration of degraded habitat. The number and size of ecological restoration projects have increased exponentially in recent years, with hundreds of thousands of projects across the globe.

Restoration goals reflect political choices, and differ by place and culture. On a global level, the concept of nature-positive has emerged as a societal goal to achieve full nature recovery by 2050, including through restoration of degraded ecosystems to reverse biodiversity loss.

Ecological restoration has become an important global strategy for conserving biodiversity, and maintaining ecosystem services. Restoration initiatives often aim to return ecosystems to their original conditions, or improve an ecosystem's ecological integrity and function.

Definition

The Society for Ecological Restoration defines restoration as "the process of assisting the recovery of an ecosystem that has been degraded, damaged, or destroyed." Restoration ecology is the academic study of the science of restoration, whereas ecological restoration is the implementation by practitioners. Ecological restoration includes a wide diversity of methods including erosion control, reforestation, removal of non-native species and weeds, revegetation of disturbed areas, daylighting streams, the reintroduction of native species, habitat and range improvement for targeted species and establishing wildlife corridors. Many scholars and practitioners argue that ecological restoration must include local communities and stakeholders: they call this process the "social-ecological restoration".

The goal of ecosystem restoration depends on the specific context of each location. Traditionally, the aim has been to return ecosystems to a past state (historic baseline), based on the idea that past conditions represent a 'pristine' or ideal functioning state. However, this approach is now questioned because human-driven environmental changes, including climate change, continuously alter ecosystems, resulting in a shifting baseline. Today, it's widely recognized that there may be several possible targets for restoration, based on a range of factors. Targets are set based on factors such as the level of ecosystem degradation, how much ecosystem functionality can realistically be restored, local community views, and the costs of restoration efforts.

Restoration efforts aim to support self sustaining ecological processes, and further support interactions within ecosystems.

Sign in to keep reading

9 more chapters are free with a Lably account.

More in Biology