Increased growth in elevated [CO2]: an early, short-term response? Export

@article{Jnl177483826, abstract = {Saplings of four clones of Sitka spruce and cherry were grown for three and two growing seasons, respectively, in open top chambers at two CO2 concentrations (about 350 and 700 mol mol?1) to determine whether the increase in total biomass brought about by enhanced [CO2] is a result of a transient or persistent effect in nonlimiting conditions. Classical growth analysis was applied to both species and mean current relative growth rate of total dry mass (RT) and leaf dry mass (RL), and period relative growth rate of total dry mass (RTt) and leaf dry mass (RLt) were calculated. Sitka spruce saplings and cherry seedlings showed a positive growth response to elevated [CO2], and at the end of the experiments both species were 40\% larger in elevated [CO2] than in ambient [CO2]. As a result, the period mean RTt and RLt were significantly higher in elevated [CO2]. The differences in plant dry mass at the end of the experiments were a consequence of the more rapid growth in the early phase of exposure to elevated [CO2]. After this initial phase mean RT and RL were similar or even lower in elevated [CO2] than in ambient [CO2]. NAR of both species was much higher in elevated [CO2], whereas both LAR, SLA, and LMR showed the opposite trend. The higher LAR and SLA of plants in ambient [CO2] contributed to a compensation by which they maintained RT similar to that of elevated [CO2] saplings despite lower NAR and Photosynthetic rate. However, when the same size the trees were similar amongst the [CO2] treatments, indicating that one of the main effect of elevated [CO2] on tree growth is to speed-up early development in all aspects.}, author = {Centritto, M. and Lee, H. S. J. and Jarvis, P. G.}, citeulike-article-id = {730009}, journal = {Global Change Biology}, key = {Key177483826}, keywords = {acclimation, co2, conifer, growth\_rate, mdb, seedlings}, number = {6}, pages = {623--633}, posted-at = {2006-07-02 15:03:09}, priority = {2}, title = {Increased growth in elevated [CO2]: an early, short-term response?}, volume = {5}, year = {1999} }

TY - JOUR ID - Jnl177483826 L3 - citeulike-article-id:730009 N2 - Saplings of four clones of Sitka spruce and cherry were grown for three and two growing seasons, respectively, in open top chambers at two CO2 concentrations (about 350 and 700 mol mol?1) to determine whether the increase in total biomass brought about by enhanced [CO2] is a result of a transient or persistent effect in nonlimiting conditions. Classical growth analysis was applied to both species and mean current relative growth rate of total dry mass (RT) and leaf dry mass (RL), and period relative growth rate of total dry mass (RTt) and leaf dry mass (RLt) were calculated. Sitka spruce saplings and cherry seedlings showed a positive growth response to elevated [CO2], and at the end of the experiments both species were 40% larger in elevated [CO2] than in ambient [CO2]. As a result, the period mean RTt and RLt were significantly higher in elevated [CO2]. The differences in plant dry mass at the end of the experiments were a consequence of the more rapid growth in the early phase of exposure to elevated [CO2]. After this initial phase mean RT and RL were similar or even lower in elevated [CO2] than in ambient [CO2]. NAR of both species was much higher in elevated [CO2], whereas both LAR, SLA, and LMR showed the opposite trend. The higher LAR and SLA of plants in ambient [CO2] contributed to a compensation by which they maintained RT similar to that of elevated [CO2] saplings despite lower NAR and Photosynthetic rate. However, when the same size the trees were similar amongst the [CO2] treatments, indicating that one of the main effect of elevated [CO2] on tree growth is to speed-up early development in all aspects. IS - 6 JF - Global Change Biology EP - 633 TI - Increased growth in elevated [CO2]: an early, short-term response? VL - 5 SP - 623 KW - acclimation KW - co2 KW - conifer KW - growth_rate KW - mdb KW - seedlings AU - Centritto, M AU - Lee, HSJ AU - Jarvis, PG PY - 1999/// ER -