This year-to-year change was most relevant for PIEN (853 and 988 m 2 ) and PILO (538 and 584 m 2 ) at SSH, while at the SSL site it was still evident for PIFL (910 vs. At the subalpine sites, lumen area showed an opposite trend compared to the montane site, since mean LA tr increased from 2011 to 2012 for all species (Fig. A similar reduction in lumen areas was found for PIFL between 2011 (609 m 2 ) and 2012 (453 m 2 ). 3a), since mean LA tr was 991 m 2 for ABCO and 989 m 2 for PSME, while in 2012 cellular elements were smaller (LA was 736 for ABCO and 781 m for PSME). Larger tracheid lumens were observed in 2011 (Fig. 3) for most of the measured parameters at the montane site showed similarities between ABCO and PSME in both years. Precipitation during June–September was higher in 2012 than in 2011 at both sites and arrived mostly after mid-July (Fig. Total precipitation from January to May 2011 accounted for 62% (322 mm) and 60% (406 mm) of total annual precipitation at SM and SS respectively, whereas in 2012 it amounted to 185 mm and 248 mm (42% and 40% of total annual precipitation Table 3). Precipitation in 2011 included abundant winter–spring snowfall, whereas 2012 showed a more pronounced summer precipitation pattern (Table 3 and Fig. The June–September period was instead characterized by slightly cooler temperatures in 2011 at both sites. ![]() Mean daily temperature during the winter–spring period (January–May) was lower during 2011 than 2012 ( Table 3). and precipitation at the montane and subalpine sites showed differences between 20.
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