Mass- and area-based contents in nitrogen, proteins, and chlorophyll within crowns of balsam fir (Abies balsamea) and black spruce (Picea mariana) trees located along a temperature gradient

The variation in nitrogen, insoluble and soluble proteins, and chlorophyll concentrations (mg·g−1) and contents per unit leaf area (mg·cm−2) as a function of specific leaf area (SLA) was examined in leaves sampled at the bottom, middle, and upper sections of the crowns of balsam fir (Abies balsamea)... View More