Influence of annual weather on growth of pedunculate oak in southern Sweden

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Influence of annual weather on growth of pedunculate oak in southern Sweden

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Publication Article, peer reviewed scientific
Title Influence of annual weather on growth of pedunculate oak in southern Sweden
Author(s) Drobyshev, Igor ; Niklasson, Mats ; Eggertsson, Olafur ; Linderson, Hans ; Sonesson, Kerstin
Date 2008
English abstract
A network of oak (Quercus robur L.) chronologies containing 49 sites and 635 single trees was analysed to identify weather variables affecting annual tree-ring increment dynamics in southern Sweden during 1860-2000. We analysed (1) the growth response of oak to non-extreme weather, and (2) the temporal and spatial patterns of regional growth anomalies (pointer years) and associated climatic extremes resolved on a monthly scale. Growth was controlled by precipitation in the current (June-July) and the previous growing season (August) in 48% and 22% of all sites, respectively. Temperature during July of the current year and August of the previous year was negatively correlated with growth in 29% and 43% of the sites, respectively. Growth was positively correlated with temperature in October of the previous season in 72% of the sites. The most extensive growth anomaly occured in 1965 and was probably caused by intrusion of cold Artic air masses into the region at the end of March that year. During the climatically non-extreme years, oak growth is driven mostly by the dynamics of summer precipitation. Many of the negative growth anomalies, however, were associated with temperature extremes. Southern Swedish oak pointer years tend not to coincide with the pan-European pointer years.
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Publisher INRA, EDP Sciences
Host/Issue Annals of forest science;5
Volume 65
ISSN 1297-966X
Pages 512
Language eng (iso)
Subject(s) climatic variability
extreme events
Research Subject Categories::FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING::Plant production
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