books.google.co.nz - We all know that our planet is losing its biological diversity at an alarming rate, with frightening implications for our future. But when does an ecosystem hit the breaking point? In this important book, Princeton biologist Simon Levin offers general readers the first look at how the new science of...http://books.google.co.nz/books/about/Fragile_Dominion.html?id=FUJsj2KOEeoC&q=relationship&utm_source=gb-gplus-shareFragile Dominion