Attractors
States or patterns toward which a system tends to settle from many different starting points.
Why it matters now
Ecosystems have alternative attractors: clear lake or turbid lake, forest or savanna, kelp or urchin barren. Restoration is the work of pushing a system out of one basin and into another, and it explains why halfway measures often fail while a decisive push succeeds. It also explains why a degraded state can be so stubborn.
Where this is happening on Earth
- EuropeShallow lake restoration in the Netherlands and DenmarkLakes flip between clear and turbid states; partial nutrient cuts fail where decisive ones succeed.
- North AmericaKelp forest and urchin barren shifts along the Pacific coastTwo stable states separated by the presence of a single predator group.
- AfricaSavanna and woodland alternative states in Kruger, South AfricaFire and herbivory determine which attractor a landscape occupies.
- OceaniaCoral and algal reef states across the PacificOnce algae dominate, herbivore recovery must be substantial before coral returns.
- South AmericaAmazon forest and degraded pasture statesRestoration requires crossing back over a threshold rather than simply stopping clearance.
The idea itself
The encyclopedia entry first, then live searches at journals and magazines that keep returning current work on this specific idea.
Current reporting from around the world
Standing feeds at reputable periodicals. These stay fresh on their own, which is why they are here instead of a list of articles that would be out of date within a season.