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Species-specific growth and transpiration response to changing environmental conditions in floodplain forest
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SYSNO ASEP 0558024 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Species-specific growth and transpiration response to changing environmental conditions in floodplain forest Author(s) Szatniewska, Justyna (UEK-B) SAI, RID, ORCID
Zavadilová, Ina (UEK-B) RID, SAI, ORCID
Nezval, Ondřej (UEK-B) SAI, RID, ORCID
Krejza, Jan (UEK-B) RID, ORCID, SAI
Petrik, Peter (UEK-B) RID, ORCID, SAI
Čater, M. (SI)
Stojanović, Marko (UEK-B) ORCID, RID, SAINumber of authors 7 Article number 120248 Source Title Forest Ecology and Management. - : Elsevier - ISSN 0378-1127
Roč. 516, JUL (2022)Number of pages 14 s. Language eng - English Country NL - Netherlands Keywords sap flow measurements ; fraxinus-angustifolia ; quercus-robur ; norway spruce ; carbohydrate reserves ; stomatal conductance ; fagus-sylvatica ; water storage ; tree ; soil ; Sap flow ; Stem radial growth ; Tree water deficit ; Growth-based water use efficiency ; Ring-porous species ; Drought stress Subject RIV GK - Forestry OECD category Forestry R&D Projects LM2018123 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UEK-B - RVO:86652079 UT WOS 000799148900007 EID SCOPUS 85129265793 DOI 10.1016/j.foreco.2022.120248 Annotation Recent changes in the floodplain forests of Central Europe, caused mainly by changes in hydrological manage-ment , the increased frequency of droughts due to climate change, have led to severe degradation of floodplain ecosystems. Our main objective was to determine the sensitivity of trees to drought by observing the response of the tree phenology, stem radial growth , physiology (sap flow) of three predominant tree species, namely English oak, narrow-leaved ash, and common hornbeam, to the environmental variables (climate). Stem radial growth began before bud break in ring-porous oak and ash, whereas in diffuse-porous hornbeam, growth onset occurred after leaf formation. The early onset with intense growth during favorable months (April-May) observed in ring-porous species was a major prerequisite for the successful growth of oak and ash at this site. Tree water deficit (TWD), an indicator of stem hydration, was triggered by decreasing soil moisture in all species, and was most prominent in ash, followed by oak. Intriguingly, sap flow was decoupled from TWD in all species and was driven primarily by evaporative demand from the atmosphere. Oak was the least conservative in regulating sap flow under atmospheric drought followed by hornbeam, whereas ash was most restricted and reduced its transpiration during dry periods. In contrast, ash was characterized by the highest radial growth and growthbased water-use efficiency. The lower water storage capacity of oak and ash is likely compensated by deep rooting and drought avoidance strategies, respectively. Tree species that tend to use surface soil water could be severely limited by more extractive species such as hornbeam. Despite the contrasting leaf and wood phenology, stomatal control, and rooting depth among the studied floodplain tree species, they exhibited analogous sap flow and water storage dynamics responses to drier conditions that enabled them to co-exist in the South Moravian Region. Nevertheless, our results suggest that the severe droughts and human-induced alterations in groundwater pose serious threats to floodplain forests in Central Europe, with certain tree species being unable to adapt to these altered conditions. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2023 Electronic address https://www.sciencedirect.com/science/article/pii/S0378112722002420?dgcid=author#!
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