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Effects of elevation-dependent climate warming on intra- and inter-specific growth synchrony in mixed mountain forests
del Rio, Miren (Author), Vergarecheaa, Marta (Author), Hilmers, Torben (Author), Aldaye, Josu G (Author), Avdagić, Admir (Author), Binderhh, Franz (Author), Bošela, Michal (Author), Dobor, Laura (Author), Forrester, David I. (Author), Halilović, Velid (Author), Ibrahimspahić, Aida (Author), Klopčič, Matija (Author), Lévesque, Mathieu (Author), Nagel, Thomas Andrew (Author), Sitkova, Zuzana (Author), Schütze, Gerhard (Author), Stajić, Branko (Author), Stojanović, Dejan (Author), Uhl, Enno (Author), Zlatanov, Tzvetan (Author), Tognetti, Roberto (Author), Pretzsch, Hans (Author)

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Abstract
Spruce-fir-beech mixed forests cover a large area in European mountain regions, with high ecological and socio-economic importance. As elevation-zone systems they are highly affected by climate change, which is modifying species growth patterns and productivity shifts among species. The extent to which associated tree species can access resources and grow asynchronously may affect their resistance and persistence under climate change. Intra-specific synchrony in annual tree growth is a good indicator of species specific dependence on environmental conditions variability. However, little attention has been paid to explore the role of the inter-specific growth asynchrony in the adaptation of mixed forests to climate change. Here we used a database of 1790 tree-ring series collected from 28 experimental plots in spruce-fir-beech mixed forests across Europe to explore how spatio-temporal patterns of the intra- and inter-specific growth synchrony relate to climate variation during the past century. We further examined whether synchrony in growth response to inter-annual environmental fluctuations depended on site conditions. We found that the inter-specific growth synchrony was always lower than the intra-specific synchrony, for both high (inter-annual fluctuations) and low frequency (mid- to long-term) growth variation, suggesting between species niche complementarity at both temporal levels. Intra- and inter-specific synchronies in inter-annual growth fluctuations significantly changed along elevation, being greater at higher elevations. Moreover, the climate warming likely induced temporal changes in synchrony, but the effect varied along the elevation gradient. The synchrony strongly intensified at lower elevations likely due to climate warming and drying conditions. Our results suggest that intra- and inter-specific growth synchrony can be used as an indicator of temporal niche complementarity among species. We conclude that spruce-fir-beech mixtures should be preferred against mono-specific forests to buffer climate change impacts in mountain regions.

Language:English
Keywords:species asynchrony, tree ring, growth variation, climate change
Work type:Article (dk_c)
Tipology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Year:2021
Number of pages:10 str.
Numbering:Vol. 479, article 118587
UDC:630*56:630*111
ISSN on article:1872-7042
DOI:10.1016/j.foreco.2020.118587 Link is opened in a new window
COBISS.SI-ID:32976387 Link is opened in a new window
License:CC BY 4.0
This work is available under this license: Creative Commons Attribution 4.0 International
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Record is a part of a journal

Title:Forest Ecology and Management
Publisher:Elsevier
ISSN:1872-7042
COBISS.SI-ID:23393541 This link opens in a new window

Document is financed by a project

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project no.:J4-1765
Name:Razvoj gozdnih ekosistemov in klimatske spremembe: učinki ujm večjega obsega in segrevanja ozračja

Secondary language

Language:Slovenian
Keywords:rasne spremembe, dendrokronologija, podnebne spremembe

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