On 28/01/2013 9:00 AM, Tony Langdon wrote:
I'm not so sure there either. There was an interesting story on Catalyst about CSIRO research into the effects of increased CO2 on plants, and one thing they did see what that because there is an abundance of food for plants (CO2 and sunlight), plants are able to put more energy into _protecting_ themselves from being eaten, whether that be manufacturing poisons, physical structures to prevent them being eaten or whatever. So, the net result of increased CO2 on food production? We don't know, there are still unknown variables.
I remember that too but I thought the amount of CO2 increase was substantially higher than the current increase we were seeing in the atmosphere. Does anyone remember the amount? If it was additionally increased to represent some other effect (perhaps time)? The Wiki article on the topic looks quite good: http://en.wikipedia.org/wiki/Carbon_dioxide_in_Earth%27s_atmosphere Well, to me but I wouldn't know any better. Cheers, Mike