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Growth trends and climate responses of Norway spruce along elevational gradients in East-Central Europe
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SYSNO ASEP 0473130 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Growth trends and climate responses of Norway spruce along elevational gradients in East-Central Europe Author(s) Ponočná, T. (CZ)
Spyt, B. (PL)
Kaczka, R. J. (PL)
Büntgen, Ulf (UEK-B) RID, ORCID, SAI
Treml, V. (CZ)Number of authors 5 Source Title Trees: structure and function. - : Springer - ISSN 0931-1890
Roč. 30, č. 5 (2016), s. 1633-1646Number of pages 14 s. Language eng - English Country DE - Germany Keywords abies l. karst. ; tree-ring chronologies ; basal area increment ; radial growth ; forest growth ; altitudinal gradient ; sudetes mountains ; northern europe ; tatra mountains ; alps ; climate change ; mountain forests ; picea abies ; radial growth ; rree rings ; trend preservation Subject RIV GK - Forestry R&D Projects EE2.3.20.0248 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support RVO:67179843 - RVO:67179843 UT WOS 000384406000014 EID SCOPUS 84963649859 DOI https://doi.org/10.1007/s00468-016-1396-3 Annotation Decadal growth variability of Norway spruce increases with elevation. Recent temperature sensitivity and growth enhancement are limited to trees growing in the zone adjacent to timberline. Growth trends and climate responses of forest trees along elevational gradients are not fully understood. A deeper insight is, however, fundamental for predicting ecosystem functioning and productivity under future climate change. Supplementary to the effects of elevation and regional provenance on tree growth are sample depth, uneven representation of sample age and varying site conditions. Furthermore, there is only a limited number of studies addressing growth changes along elevational gradients, while at the same time applying tree-ring standardization methods that are sensitive to trend preservation. Here, we introduce 12 novel tree-ring width chronologies of Norway spruce (Picea abies[L.] Karst.) from four elevational belts encompassing montane forests and the local timberline in three regions in East-Central Europe between 15A degrees and 19A degrees E. Each chronology is characterized by sufficient sample replication and a comparable age structure between 1906 and 2010. Tree growth near timberline revealed substantial medium-frequency variability and sharply increasing ring widths since the 1980s. Medium-frequency growth variability of lower elevation trees was, however, relatively small, and growth rates over the last decade were either stable or even decreased. During the last four decades, Norway spruce from higher elevations exhibited a reduced response to autumn temperatures preceding ring formation. In contrast, trees from the lower-montane zone increased their sensitivity to drought during the same time. Our results emphasize not only different but also instable growth trends and climate responses of forest trees along altitudinal gradients, which should be considered in future forest management strategies. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2017
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