Competition increasingly dominates the responsiveness of juvenile beech and spruce to elevated CO₂ and/or O₃ concentrations throughout two subsequent growing seasons

• Published in: Global change biology Vol. 11; no. 9; pp. 1387 - 1401
• Main Authors: Kozovits, A.R, Matyssek, R, Blaschke, H, Gottlein, A, Grams, T.E.E
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Science Ltd 01.09.2005; Blackwell Publishing Ltd
• Subjects: air pollution; allometry; Biomass; Botany; Carbon dioxide; Competition; elevated atmospheric gases; European beech (Fagus sylvatica); Fagus sylvatica; Gas exchange; Growing season; growth chambers; interspecific competition; juvenility; Monoculture; nitrogen content; Norway spruce (Picea abies); Ozone; partitioning; Picea abies; plant competition; plant nutrition; Resource availability; tree growth; Trees; whole-plant nitrogen status

Saplings of Fagus sylvatica and Picea abies were grown in mono‐ and mixed cultures in a 2‐year phytotron study under all four combinations of ambient and elevated ozone (O3) and carbon dioxide (CO2) concentrations. The hypotheses tested were (1) that the competitiveness of beech rather than spruce i...