Mehlhorn, Horst and Francis, Brian and Wellburn, Alan (1988) Prediction of the probability of forest decline damage to Norway spruce using three simple site-independent diagnostic parameters. New Phytologist, 110 (4). pp. 525-534. ISSN 0028-646XFull text not available from this repository.
Survey data for Norway spruce (Picea abies I.) trees at 12 different forest sites across Europe have been analysed. Three variables (dry weight/fresh weight ratio differences between current and two-year-old needles, ethylene emissions and violaxanthin/antheraxanthin ratios) were found which together show a significant relationship to tree damage in areas affected by forest decline and which are independent of site effects (P < 0.001). Results are also presented that support the contention that atmospheric pollution, especially tropospheric ozone, is the major cause of this problem. After a four-year fumigation experiment, 12-year-old Norway spruce trees showed similar cellular changes as those found in the 30-to 40-year-old trees of the survey affected by forest decline. In the fumigation experiment, these changes were most pronounced in those plants exposed to a combination of treatments including ozone, sulphur dioxide and acid rain. The pollutant concentrations used in the four-year study were representative of those experienced by trees growing in affected areas.
|Journal or Publication Title:||New Phytologist|
|Uncontrolled Keywords:||Picea abies ; acid rain ; antheraxanthin ; ethylene ; generalized linear models ; ozone ; sulphur dioxide ; violaxanthin ; water content|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
Faculty of Science and Technology > Mathematics and Statistics
|Deposited On:||12 Oct 2011 11:53|
|Last Modified:||07 Jan 2015 16:56|
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