We compared ascorbate contents of current-year Picea abies needles with respect to tree
age and crown position. To exclude microclimatic influences, potted seedlings were …

Cumulative ozone (O3) uptake and O3 flux were related to physiological, morphological and
biochemical characteristics of Norway spruce (Picea abies (L.) Karst.) trees of different ages …

The objective of the present study was to investigate whether peak concentrations of ozone
can deplete the apoplastic ascorbate pool of needles from Norway spruce trees (Picea abies …

The uptake of air pollutants depends both on pollutant concentration and on stomatal
conductance. This paper deals with the uptake of ozone (O 3) from the air into the needles of …

To investigate the effects of ozone exposure and soil drought, singly and in combination, on
gas exchange, antioxidant contents and pigments in current-year needles of Norway spruce …

The effect of free-air ozone fumigation and crown position on antioxidants were determined
in old-growth spruce (Picea abies) trees in the seasonal course of two consecutive years …

The broad range in plant responses to chronic O3 exposure compels a search for
integrative, underlying principles. One such approach is the unifying theory proposed by …

The goal of the present study was to examine the effects of slow and rapid changes of ozone
(O3) concentrations on the physiological behaviour of current‐year needles of Norway …

Nine-year-old Norway spruce from two clones and beech grown in open-top chambers were
exposed to both drought and elevated (ambient+ 0.05 μl l− 1) ozone. Beech was less …

In order to study the combined effects of CO2, ozone, and drought, we simulated in a
controlled environment the climatic conditions of a German oak stand with high ozone …