What is the daily calorie usage of a conifer?

Question

ie.

a pine tree; How many calories of their photosynthesized glucose are subsequently burned in their mitochondria in ONE average 24 hour period?

Answer 1

This depends on the age of the tree and the time in the growing season.

Caloric Values of Pinus Virginiana as Affected by Time of Sampling, Tree Age, and Position in Stand

http://www.jstor.org/pss/1933639

Estimated carbon uptake for a year in for slash pine (Pinus elliottii) was 1236 g/sq m

maintenance respiration was 523 g/sq m

growth respiration was 91 g/sq m http://www.sciencedirect.com/science?_ob...

30 yr old beech tree annual respiration ~ 325g carbon/sq m

~ 50% attributed to growth

http://www.jstor.org/pss/1513918

Douglas fir

http://www.amjbot.org/cgi/content/full/8...