Tree-ring chronologies of Norway-spruce on west-east longitudinal gradient in the mountain ranges of central Europe
| Autor: | Ponocná, Tereza |
|---|---|
| Přispěvatelé: | Treml, Václav, Kolář, Tomáš, Vejpustková, Monika |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
East-Central Europe
radial growth dendrochronology climate change letokruhy klimatická rekonstrukce Norway spruce growth response climate reconstruction střední Evropa ekoton horní hranice lesa treeline ecotone radiální růst dendrochronologie změna klimatu tree rings smrk ztepilý odezva růstu stromů |
| Popis: | The Earth's climate system has recently experienced substantial warming which likely impacts temperature-limited communities close to their distribution margins. The alpine treeline ecotone represents upper distributional limit of montane/subalpine forests. This biogeographic boundary relies mainly on decreasing temperature with increasing elevation. Surprisingly the response of treeline ecotone to ongoing warming has varied a lot and the reasons of this variability are poorly understood. The aim of this dissertation thesis is the assessment of growth trends and tree ring response of Norway spruce (Picea abies[L.] Karst.) to climatic oscillations at treelines and montane forests of East-Central Europe. This dissertation deals with both inter-regional and intra-regional (aspect, elevation) variability of tree growth. The presented results are based on an extensive data set of growth curves for almost 1400 trees. All study sites revealed close relationship between tree ring widths and growing season temperatures as well as the temperatures of October preceding to ring formation season. The main site-dependent differences in growth trends and temperature responses were attributed to elevation, the effect of aspect was relatively less significant. At treelines between the Krkonoše Mts. and Nízké Tatry... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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