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Crown architecture and light-harvesting efficiency (Ea) were compared in seedlings of eight Quercus species from contrasting environments. Several morphological variables were measured after one year of growth under the same environmental conditions. Ea was estimated with the 3-D model Y-plant. The species were classified in four groups according to their Ea: Q. rubra-Q. alba > Q. faginea-Q. pyrenaica > Q. robur-Q. ilex-Q. coccifera > Q. suber. Principal component analysis revealed that the constraining morphological variables for maximizing Ea were the total number of leaves and the variability of internode length. Two contrasting growth models were associated with distinct environments and significantly different Ea: evergreen, Mediterranean species (e.g. Q. suber), which showed a multilayered crown of many small leaves rendering low Ea, versus deciduous, non-Mediterranean temperate species (e.g. Q. rubra), which showed the opposite characteristics.

annals of forest science

Crown architecture and leaf habit are associated with intrinsically different light-harvesting efficiencies in<i>Quercus</i>seedlings from contrasting environments

Crown architecture and leaf habit are associated with intrinsically different light-harvesting efficiencies inQuercusseedlings from contrasting environments