Biologia plantarum 54:773-776, 2010 | DOI: 10.1007/s10535-010-0140-x
Stem respiration of Norway spruce trees under elevated CO2 concentration
- 1 Institute of Systems Biology and Ecology, Academy of Sciences of the Czech Republic, Brno, Czech Republic
Measurements of stem respiration were conducted for a period of four years (1999-2002) in 14-year old Norway spruce (Picea abies [L.] Karst) trees exposed to ambient (CA) and elevated CO2 concentration (CE; ambient plus 350 μmol mol-1). Stem respiration measurements of six trees per treatment were carried out 2-3 times per month during the growing season. Stem respiration in CE treatment was higher (up to 16 %) than in CA treatment. Temperature response of stem respiration (Q10) for the whole experimental period ranged between 1.65-2.57 in CA treatment and 2.24-2.56 in CE treatment. The mean stem respiration rate normalized to 10 °C (R10) in CA and CE treatments ranged between 1.67-1.95 and 2.19-2.72 μmol(CO2) m-2 s-1, respectively. Seasonal variations in stem respiration were related to temperature and tree growth.
Keywords: glass lamellas domes; R10; tree growth
Subjects: CO2 concentration, elevated; Norway spruce; Picea abies; respiration
Received: June 26, 2009; Accepted: January 26, 2010; Published: December 1, 2010Show citation
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