By early 2009, 23 of the biggest European and American banks saw 90% of their market value evaporate.
This article titled “Insights from ecologists show ways of preventing economic disaster” was written by Larry Elliott, for The Guardian on Monday 18th April 2011 06.03 UTC
In the eight centuries from 1000-1800 AD the world's fish stocks and species numbers were stable and healthy. In the subsequent 200 years, 40% of the species in coastal waters collapsed, showing falls in their population by 90% or more.
There was a pattern to this story of decline. There was a much-less marked attrition in coastal regions with richly diverse marine ecosystems than in regions exhibiting low levels of diversity.