On 28/01/13 12:51 AM, Andrew McGlashan wrote:
On 27/01/2013 11:02 PM, Mark Trickett wrote:
I am not cheerful, I am worried. Let's see how worried you are in 20 years time, perhaps 10 years.
I believe that for food production, we are actually CO2 poor. There have been times in our history where CO2 have been far greater. Producing food, which everyone needs, benefits greatly from increased CO2.
http://www.co2science.org/education/reports/foodsecurity/GlobalFoodProductio... 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. -- 73 de Tony VK3JED http://vkradio.com