2017-03-16. Hawaiian biodiversity has been declining for millions of years.

posted Mar 22, 2017, 9:55 AM by Alan Gould
By Robert Sanders, UC Berkeley News. For GSS Losing Biodiversity chapter 1. Excerpt: Hawaii’s unique animal and plant diversity has been declining on all but the Big Island for millions of years, long before humans arrived, according to a new analysis of species diversity on the islands by University of California, Berkeley, evolutionary biologists. The team concluded that the shrinking land areas of the older islands began putting stress on the flora and fauna several million years after the islands formed. Today, all of the islands except the Big Island of Hawaii – the only island still growing – have experienced a decrease in species diversity, albeit imperceptibly on human time scales, since even before the extinction caused by human activity. They reached this conclusion with a new method for analyzing the species diversity on the different islands in the multiple-island chain, deducing the history of diversification on each island with their new approach for 14 different groups, or clades, of birds, insects, spiders and plants....  http://news.berkeley.edu/2017/03/16/hawaiian-biodiversity-has-been-declining-for-millions-of-years/