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DROUGHT IMPACT ON FOREST TREES IN FOUR NATURE PROTECTED AREAS IN SERBIA

Rita Horák ; University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Novi Sad, Serbia
Milan Borišev ; University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Novi Sad, Serbia
Andrej Pilipović ; Univesity of Novi Sad, Institute of Lowland Forestry and Environment,Novi Sad, Serbia
Saša Orlović ; Univesity of Novi Sad, Institute of Lowland Forestry and Environment,Novi Sad, Serbia
Slobodanka Pajević ; University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Novi Sad, Serbia
Nataša Nikolić ; University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Novi Sad, Serbia

Sažetak

Important predictions of climate change propose a correlated increase in frequency of extreme temperature and precipitation patterns. Period of extremely low precipitation occurred during the vegetation season of 2011 at four mountain forest localities of the Balkan region. Influence of this extreme event was correlated with photosynthetic and transpiration intensity, and content of photosynthetic pigments in forest populations of beech (Fagus sylvatica L.), spruce (Picea abies (L.) Karsten) and fir (Abies alba Mill) on four sites, with specific locality properties. Significant reductions in CO₂ assimilation along with decrease in water use efficiency, were determined by water deficit. It seems that drought occurrence will influence forests in site specific manner, having the most negative impact on forest populations located in the altitude proximity of mountain reefs and peaks. This process leads to decrease in tree mass and reduced forest cover on such sites. Such environmental conditions will lessen possible acclimation of trees to elevated atmospheric CO₂ concentration and upward migration to higher altitudes determined by global temperature increase.

Ključne riječi

climate change; water deficit; beech; common spruce; silver fir

Hrčak ID:

125675

URI

https://hrcak.srce.hr/125675

Datum izdavanja:

30.6.2014.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.762 *