2011-02-18 08:38:25Vine growth
Paul D

chillcast@googlemail...
82.18.130.183

Vines taking over tropical rain forest (CO2 responsible??):

http://www.sciencedaily.com/releases/2011/02/110214083002.htm

2011-02-18 21:03:42
Rob Painting
Rob
paintingskeri@vodafone.co...
118.93.217.248

I remember reading a few Amazon studies about Lianas. After fires (largely set by humans in the dry season to clear forest for agriculture) Liana tend to dominate regrowth (over-burn areas). Which creates a rather large problem for all the fruit-eating animals in the regrowth areas, there's bugger all to eat once the woody vines take over. 

Be interesting to find out what is causing this forest-wide change.  

 

2011-02-21 05:24:56FYI
citizenschallenge
Peter Miesler
citizenschallenge7@gmail...
166.164.143.118

J.C. Moore Online
Current events from a science perspective.

"Experiments: It is difficult to do outdoor experiments on the effect of CO2 levels on crop growth, but a few have been done. One experiment found that wheat grown at higher CO2 levels has more leaf mass and more kernels; however, the kernels are smaller and have less nitrogen, making them less valuable as a food source. In another experiment, higher CO2 levels in wheat used for grazing correlated with lower nitrogen in the leaves, making the crop less suitable for grazing. Agriculture experts are saying that the result of increasing CO2 levels coupled with increasing temperatures will lower crop yields or quality. That has been found to be true in rice production, and rice is a staple for half the world. In an inadvertent experiment, we have found that some invasive species, such as Kudzu, are well adapted to the increasing temperatures and CO2 levels. They have prospered and are expanding their range northward.

Certainly, plants need CO2, but to say more CO2 will make all plants grow better is a great supposition and oversimplification."

~ ~ ~ ~ ~ ~ ~ 

 Are Rising Carbon Dioxide Levels Better For Plants?

By kerryg

Which Plants Benefit From Increased CO2 Levels?

 Studies have found, for example, that: