Friday, September 30, 2011

Carbon Science - There is More Phytosynthesis Occurring!

It is not all doom.....recent experiments and measurements have shown that current phytosynthesis - globally - is about 25% more than has previously been calculated.

The work is based on isotopic analysis of atmospheric carbon dioxide, but essentially follows flows of oxygen and carbon dioxide in and out and through the atmosphere.

Plants take up CO2 and emit oxygen, and from that, using isotope analysis total phytosynthesis is estimated..........and it is a lot more than previously thought.

It will have considerable effect on the performance of the climate change models, but this nett phytosynthesis increase still has to be incorporated into the large and complex models used.

Read more details here in a CSIRO media release- it possibly related to more CO2 in the atmosphere boosting plant utilisation, seen as a response to more CO2 in the atmosphere? That is not mentioned.

And there is more as well - with this story also reporting an increase in plant productivity via uptake of carbon - essentially the same data as above but reported in a different way, referring to productivity of land plants. Remember, they produce oxygen!

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