http://greghardwick.com.au/blog/2007/03/12/climate-change-more-co2-means-greater-plant-growth/ specialising in environmental journalism, photography and CMS web design Tue, 22 Jun 2010 22:55:11 +0000 hourly 1 http://wordpress.org/?v=abc http://greghardwick.com.au/blog/2007/03/12/climate-change-more-co2-means-greater-plant-growth/comment-page-1/#comment-42 Greg Hardwick Sat, 02 Jun 2007 04:56:00 +0000 http://greghardwick.com.au/climate-change-more-co2-means-greater-plant-growth/#comment-42 Thanks for the comment Carl. I've noticed that there have been some recent studies here in Australia regarding CO2 uptake amongst the eucalyptus species which dominate this continent. Plants such as these have been adapted for higher temperatures for many thousands of years. It would appear they have a better ability to absorb higher CO2 amounts as they have evolved to cater for high Australian temperatures and therefore their stomata tend to stay open even if temperatures are extreme. The plants which have limited adaptability would be those which have traditionally grown in mild climates, especially if these climates are now warming. But, it was interesting what you said about nutrients being the limiting factor amongst aquarium plants.<br/>regards<br/>Greg Thanks for the comment Carl. I’ve noticed that there have been some recent studies here in Australia regarding CO2 uptake amongst the eucalyptus species which dominate this continent. Plants such as these have been adapted for higher temperatures for many thousands of years. It would appear they have a better ability to absorb higher CO2 amounts as they have evolved to cater for high Australian temperatures and therefore their stomata tend to stay open even if temperatures are extreme. The plants which have limited adaptability would be those which have traditionally grown in mild climates, especially if these climates are now warming. But, it was interesting what you said about nutrients being the limiting factor amongst aquarium plants.
regards
Greg

]]> http://greghardwick.com.au/blog/2007/03/12/climate-change-more-co2-means-greater-plant-growth/comment-page-1/#comment-41 Carl Sat, 02 Jun 2007 02:46:00 +0000 http://greghardwick.com.au/climate-change-more-co2-means-greater-plant-growth/#comment-41 I have used in <a HREF="http://www.americanaquariumproducts.com/AquariumPlants.html" REL="nofollow">CO2 systems</a> with for aquariums personally and for my clients. There is a point (usually over 25 ppm) when CO2 starts becoming a problem for the fish, however the more CO2 added the faster the plants grow. Lack of nurients are the only other limiting factor, and that is rarely a problem. The ceiling for CO2 and plant growth is quite high, much higher than is often suggested. I have used in CO2 systems with for aquariums personally and for my clients. There is a point (usually over 25 ppm) when CO2 starts becoming a problem for the fish, however the more CO2 added the faster the plants grow. Lack of nurients are the only other limiting factor, and that is rarely a problem. The ceiling for CO2 and plant growth is quite high, much higher than is often suggested.

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