Would this pure CO2 increase or decrease the preformance of plants in a pressurized environment? What plants would most efficently process this CO2 into oxygen?
You must remember that they need oxygen for respiration.
That said, the net O2 production atstart, of not enough to sustain the respiration process would result in a very fast declining process, and the final death of the plant.
Plants would quickly produce enough O2 from the Calvin cycle to support the O2 requirements of the TCA cycle, I think. However the big problem would be acidification with such high levels of CO2.
Plant grow in elevated levels of CO2 can lead to:
1. The reduce use of water,
2. Change the growth rate, including the yields of crops
3. The change of chemicals/compounds in plants, including Nitrogen,
4. The change of chemicals/compounds in plants indirectly affect the nutrients which human, animal and insets are using, such as the decrease of 'nitrogen' uptake will influence the protein production
Please refer to the article below from the Nature group for good research data and information. The research was conducted under Free-Air Carbon dioxide Enrichment (FACE) environment. Free-air carbon dioxide enrichment allows experiments with controlled atmospheric concentrations of carbon dioxide to be conducted in the field and avoids potential experimental artifacts from growing plants in enclosed chambers (see attached picture):
Title: Effects of Rising Atmospheric Concentrations of Carbon Dioxide on Plants
http://www.nature.com/scitable/knowledge/library/effects-of-rising-atmospheric-concentrations-of-carbon-13254108
The point is elevated CO2 levels or a atmosphere of CO2 only?
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