Since shade is known to influence specific leaf area (SLA; Wuytack et al., 2011) we collected birch leaves from different branches of the sun crown in the end of July 2010 when leaves were fully developed and not yet affected by senescence
Since shade is known to influence specific leaf area (SLA;Wuytack et al., 2011) we collected birch leaves from differentbranches of the sun crown in the end of July 2010 when leaves werefully developed and not yet affected by senescence