ORIGINAL RESEARCH
Interpopulation Variation of Individual Tree
Response to Pollution: Evidence from Scots Pine
Dendrochronological Data
Adomas Vitas
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Faculty of Nature Sciences, Centre of Environmental Research, Group of Dendroclimatology and Radiometrics,
Vytautas Magnus University, Ž.E. Žilibero 2, LT-46324 Kaunas, Lithuania
Pol. J. Environ. Stud. 2011;20(1):209-214
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ABSTRACT
The results of a dendrochronological investigation carried out on Scots pine (Pinus sylvestris L.) in the
vicinity of JSC ‘Achema’ are presented. We found that pines sensitive and resistant to pollution exist in the
population. Trees judged to be sensitive to pollution grew much faster in the period before the pollution
occurred in comparison to resistant trees (p=0.00). We found that the dominant and codominant crown classes
are more common among sensitive pines, while emergent crowns are twice as common among resistant
trees. However, the differences are not statistically significant. We did not find an obvious difference between
morphological bark forms of pines in respect to their sensitivity to pollution. The frequency of missing rings
during the strongest depression period is much higher for sensitive pines (p=0.00).