I spent a little bit of time reading up on and researching for my previous blog post. Reading up on awikipedia article for the Biosphere2, I came across something, that if it’s true, is quite disturbing:
<snip>Biosphere 2 suffered from CO2 levels that “fluctuated wildly” and most of the vertebratespecies and all of the pollinating insects died. Insect pests, like cockroaches, boomed. In practice,ants, a companion to one of the tree species (Cecropia) in the Rain Forest, had been introduced. By 1993 the tramp ant species Paratrechina longicornis, local to the area had been unintentionally sealed in and had come to dominate. Galagos reproduced in Biosphere 2, but a number of pollinating insects were lost to ant predation and several bird species were lost. However, many of the pollinating duties were performed by those ants and cockroaches.
The excerpt from the article at wikipedia seems a bit misleading. I did a little bit more investi-ma-gation and it appears that the various issues experienced weren’t exactly all related to each other. link