Response patterns in adult forest trees to chronic ozone stress: identification of variations and consistencies.
The responsiveness of adult beech and spruce trees to chronic O(3) stress was studied at a free-air O(3) exposure experiment in Freising/Germany. Over three growing seasons, gas exchange characteristics, biochemical parameters, macroscopic O(3) injury and the phenology of leaf organs were investigated, along with assessments of branch and stem growth as indications of tree performance. To assess response pattern to chronic O(3) stress in adult forest trees, we introduce a new evaluation approach, which provides a comprehensive, readily accomplishable overview across several tree-internal scaling levels, different canopy regions and growing seasons. This new approach, based on a three-grade colour coding, combines statistical analysis and the proficient ability of the "human eye" in pattern recognition.
Nunn
Angela J
AJ
Ecophysiology of Plants, TU München, Am Hochanger 13, D-85354 Freising, Germany. nunn@wzw.tum.de
Reiter
Ilja M
IM
Häberle
Karl-Heinz
KH
Langebartels
Christian
C
Bahnweg
Günther
G
Pretzsch
Hans
H
Sandermann
Heinrich
H
Matyssek
Rainer
R
D000393:Air Pollutants / Q000633:toxicity*; D004784:Environmental Monitoring / Q000379:methods*; D029964:Fagus / Q000254:growth & development; D005858:Germany; D010126:Ozone / Q000633:toxicity*; D012621:Seasons; D064028:Tracheophyta / Q000254:growth & development; D014197:Trees / Q000254:growth & development*
D000393:Air Pollutants; D010126:Ozone