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The main objective of the research was to evaluate the incremental response of Douglas fir and Scots pine subjected to strong environmental stress to variable thermal and precipitation conditions. We also attempted to determine periods of tree−ring width reduction caused by strong anthropopressure associated with the activities of nearby industrial plants, which are burdensome for the environment...
European mistletoe (Viscum album L.) is a semi−parasitic plant attacking selected tree species. It adversely affects the functioning of its hosts especially at water management level. Scots pine infestation by mistletoe subspecies Viscum album ssp. austriacum becomes more and more common. Mistletoe has been proven to have a negative impact on Scots pine cones, seedlings and seeds quality. Thus, we...
The aim of this study was to i) determine similarities and differences in the increment reaction of silver firs growing at different elevation, ii) identify climatic factors, which caused these response, and iii) determine dendroclimatic zones and identify a site, where a tree grew on the basis of tree−ring widths series. Studied stands were located in the Ustroń Forest District at the elevation of:...
The aim of this study was to investigate differences in radial increment reaction of Norway spruces from the Beskidy Zachodnie Mountains (S Poland). Spruce stands were located at different altitudes and slope aspect. Two altitudinal zones were distinguished by a separating altitude of 900 m a.s.l. The den− drochronological belts, consistent in terms of radial increment, amount to 200−250 m in the...
Study was performed in multi−species stand located in the Świętokrzyski National Park (central Poland). Silver fir, Norway spruce and Scots pine trees that grew in a uniform habitat conditions were selected. The trees showed the differences and similarities of changes of the size of radial increment, which result from species−specific sensitivity to selected meteorological elements
In homogeneous climate conditions Scots pine trees at different sites have similar short−term incremental rhythm. It was determined by the temperature of early spring and precipitation in June. Differences in the growth pattern are caused by various sensitivities of pines from different habitats to the temperature in May and precipitation in February and April of the current year.
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