> letting an ecosystem manage itself What would that entail? The whole of the UK has been a human managed ecosystem for centuries. Deforestation was completed

> letting an ecosystem manage itself What would that entail? The whole of the UK has been a human managed ecosystem for centuries. Deforestation was completed about 400 years ago and the larges stand of contiguous trees is under 300 sq. mi. So many of the species that would have made up the old ecosystem are gone.