<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Black alder (Alnus glutinosa (L.) Gaertn.) is a widespread tree species in Europe and the western part of the temperate climate zone. The area of forest in Latvia dominated by this tree species has substantially decreased due to wide-spread forest drainage. To predict future changes due to environmental change, it is extremely important to understand the function of ecosystems with black alder and their dynamics. Tree rings can be used as a proxy of past environmental factors. The aim of the study was to determine the effects of meteorological and hydrological factors on radial growth of black alder at two study sites (Dursupe and Raķupe) in Latvia. The response of black alder trees to the influence of climatic and hydrological factors was found to depend on site conditions, i.e. a climatic effect was observed in conditions when the water level was low. Spatial variation in the strength of the relationship of black alder growth to temperature, precipitation, and river level suggests that alder growth is more susceptible to drought stress on higher river banks, where the water table is deeper. Black alder trees growing on low river banks can potentially be used to reconstruct past water-levels.</p></abstract>

Black alder (Alnus glutinosa (L.) Gaertn.) is a widespread tree species in Europe and the western part of the temperate climate zone. The area of forest in Latvia dominated by this tree species has substantially decreased due to wide-spread forest drainage. To predict future changes due to environmental change, it is extremely important to understand the function of ecosystems with black alder and their dynamics. Tree rings can be used as a proxy of past environmental factors. The aim of the study was to determine the effects of meteorological and hydrological factors on radial growth of black alder at two study sites (Dursupe and Raķupe) in Latvia. The response of black alder trees to the influence of climatic and hydrological factors was found to depend on site conditions, i.e. a climatic effect was observed in conditions when the water level was low. Spatial variation in the strength of the relationship of black alder growth to temperature, precipitation, and river level suggests that alder growth is more susceptible to drought stress on higher river banks, where the water table is deeper. Black alder trees growing on low river banks can potentially be used to reconstruct past water-levels.

Effect of water level and climatic factors on the radial growth of black alder

Faculty of Biology, University of Latvia, Kronvalda bulv. 4, Rīga LV-1586, LATVIA

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

{"article-title":"Effect of water level and climatic factors on the radial growth of black alder"}

Black alder (Alnus glutinosa (L.) Gaertn.) is a widespread tree species in Europe and the western part of the temperate climate zone. The area of forest in...

Effect of water level and climatic factors on the radial growth of black alder

Publié en ligne: 28 juin 2012

Pages: 164 - 169

DOI: https://doi.org/10.2478/v10046-011-0032-2

Mots clés
black alder, tree rings, river water level, dendroclimatology

This content is open access.

Effect of water level and climatic factors on the radial growth of black alder

Publié en ligne: 28 juin 2012

Pages: 164 - 169

DOI: https://doi.org/10.2478/v10046-011-0032-2

Mots clésblack alder, tree rings, river water level, dendroclimatology

This content is open access.

Mots clés
black alder, tree rings, river water level, dendroclimatology