Stand microclimate and physiological activity of tree leaves in an oak-hornbeam forest

Eliáš, Pavol; Kratochvílová, Irena; Janouš, Dalibor; Marek, Michal V.; Masarovičová, E.

doi:10.1007/bf00225356

Cited by 39 publications

(9 citation statements)

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“…Functional and morphological traits of the five studied tree species according to [23][24][25][26][27][28] and others. 6 diffuse ring diffuse diffuse diffuse 1 From various literature sources and personal observations of Ellenberg (1996). Relative categorization of species (I-very high, II-high, III-medium, IV-low, V-very low).…”

Section: Study Sitesmentioning

confidence: 99%

“…The size and shape of leaves and their three-dimensional position in crown space determine the exchange of radiation, gases, sensible heat, and momentum between forest canopies and the atmosphere. From the top to the bottom of a tree crown, radiation intensity decreases to less than 10%, or even 1%, of incident flux density while air humidity increases [1]. The foliage of a tree is thus exposed to highly variable environmental conditions along the vertical crown axis, triggering different acclimation processes of sun and shade leaves to radiation intensity and evaporative demand [2].…”

Section: Introductionmentioning

confidence: 99%

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Functional Crown Architecture of Five Temperate Broadleaf Tree Species: Vertical Gradients in Leaf Morphology, Leaf Angle, and Leaf Area Density

Hagemeier

Leuschner

2019

Forests

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The morphology, inclination, and spatial distribution of leaves in different parts of tree crowns are important determinants of the radiation, momentum, and gas exchange between the canopy and the atmosphere. However, it is not well known how these foliage-related traits vary among species differing in successional status. We measured leaf size, leaf mass area (LMA), leaf inclination (angle to the horizontal), leaf area density (LAD), total leaf area (leaf area index, LAI), and leaf area distribution across the crown in adult trees of five common, early to late-successional tree species (Betula pendula Roth, Quercus petraea (Matt.) Liebl., Carpinus betulus L., Tilia cordata Mill., and Fagus sylvatica L.) using different canopy access techniques and the harvest of foliated trees (29 trees in total). Leaf size increased continuously with crown depth in B. pendula and T. cordata but peaked at mid-crown in Q. petraea, C. betulus, and F. sylvatica to decrease toward the shade crown. By contrast, LMA and leaf angle decreased continuously with crown depth in all species, but the pattern of vertical change varied. The mid/late- and late-successional species had higher LAI, lower shade-leaf LMA, lower leaf angles (shade and sun crown), and higher LAD in the uppermost sun crown in comparison to early successional B. pendula. We assume that the most peripheral sun leaf layer is partly acting as a shield against excess radiation, with foliage properties depending on the structure of the shade crown. We conclude that the vertical change in leaf morphology, inclination, and spatial distribution in tree crowns is highly species specific, with partial dependence on the species’ position in succession.

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Section: Study Sitesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Functional Crown Architecture of Five Temperate Broadleaf Tree Species: Vertical Gradients in Leaf Morphology, Leaf Angle, and Leaf Area Density

Hagemeier

Leuschner

2019

Forests

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“…When comparing this discrepancy to F3, having a similar age as F4 (7 years apart; (Allison, 1982;Hsieh et al, 1998;Kanner et al, 2014 canopy. A decrease in relative humidity with height has been observed in temperate forests (Eliáš et al, 1989;Zweifel et al, 2002), which would intensify 18 O enrichment as leaf water evaporation rates increase with tree height (Labuhn et al, 2014 We developed a chronology (without conducting any detrending or correction method) for the common period 1916-2015 by calculating for each of the nine tree-ring series the annual δ²H LM deviation to the mean of the 1961-1990 period. Subsequently, by integrating all nine δ²H LM series, a mean chronology was calculated with 95% confidence intervals to account for the interval variability (Fig.…”

Section: Intra-and Inter-tree Variability Of the δ²H Lm Seriesmentioning

confidence: 99%

Annually resolved δ<sup>2</sup>H tree-ring chronology of the lignin methoxyl groups from Germany reflects averaged Western European surface air temperature changes

Anhäuser

Sehls

Thomas

et al. 2019

Preprint

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Abstract. Stable hydrogen isotopes ratios of lignin methoxyl groups (expressed as δ2HLM) of wood have been shown to reflect the climate-sensitive δ2H values of precipitation (expressed as δ2Hprecip) modulated by a large uniform negative isotope fractionation. However, a detailed calibration study among temporal variabilities of δ2HLM in tree-ring series, site-specific δ2Hprecip and climate parameters has not been performed yet. Here, we present annually resolved δ2HLM values from nine tree-ring series (derived from four Fagus sylvatica L. trees) collected near stations of the Global Isotope Network of Isotopes in Precipitation (GNIP) and the Deutsche Wetterdienst (DWD) meteorological observatory at Hohenpeißenberg (southern Germany; ~ 48° N, 11° E). The measured nine δ2HLM tree-ring series (common period of overlap 1916-2015) show a strong coherency as indicated by highly significant (p

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“…Similarly, the summer period (June -August) 2019 was relatively warm compared with long term records (Anonymous 2022), with the highest temperature of 37.6°C(Beránek and Faško 2020). During the growing season (March -September) 2019, the sunshine duration was 1646 h. The sunshine duration data were provided by the Slovak Hydrometeorological Institute (Anonymous 2021) Eliáš et al (1989). analyzed stand microclimate in an oak-hornbeam forest for the fully-leaved season and found that approx.…”

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confidence: 99%

Functional Traits of Medicinal Plant Species Under Different Ecological Conditions

Kriššáková

Čierniková

Vykouková

et al. 2022

Preprint

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Purpose: To compare the effect of different ecological conditions (one control and three experimental sites in Bratislava, Slovakia) on the plasticity of medicinal plant species, and on the plant functional groups based on the selected leaf functional traits – SLA (specific leaf area) and LDMC (leaf dry matter content).Methods: In assessment were tested thirteen medicinal plant species – Aegopodium podagraria L., Fragaria vesca L., Galium odoratum (L.) Scop., Geum urbanum L., Glechoma hederacea L., Hedera helix L., Hypericum perforatum L., Impatiens glandulifera Royle, Plantago lanceolata L., Prunella vulgaris L., Solidago gigantea Aiton, Tussilago farfara L. and Urtica dioica L. For the formation of plant functional groups according to different leaf characteristics, the metric multidimensional scaling (MDS) ordination diagram was applied.Results: Photosynthetically active radiation (PAR) had a more significant effect on studied leaf traits than humus content (their coefficients of determination had values 0.55 and 0.11). Studied species were also characterized according to plant strategies. U. dioica and G. urbanum possessed the greatest plasticity of all studied species. Based on the functional groups we predict the response of the studied medicinal plant species to different ecological conditions. Conclusion: Traits and attributes of plants in plant communities are the outcome of adaptation of species to the environment and acclimation to environmental conditions changing in space and time. Identification of plant functional groups in plant community can provide a better understanding and functional comparison of several communities than the classical approach based on taxonomy.

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Stand microclimate and physiological activity of tree leaves in an oak-hornbeam forest

Cited by 39 publications

References 8 publications

Functional Crown Architecture of Five Temperate Broadleaf Tree Species: Vertical Gradients in Leaf Morphology, Leaf Angle, and Leaf Area Density

Functional Crown Architecture of Five Temperate Broadleaf Tree Species: Vertical Gradients in Leaf Morphology, Leaf Angle, and Leaf Area Density

Annually resolved δ<sup>2</sup>H tree-ring chronology of the lignin methoxyl groups from Germany reflects averaged Western European surface air temperature changes

Functional Traits of Medicinal Plant Species Under Different Ecological Conditions

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Stand microclimate and physiological activity of tree leaves in an oak-hornbeam forest

Cited by 39 publications

References 8 publications

Functional Crown Architecture of Five Temperate Broadleaf Tree Species: Vertical Gradients in Leaf Morphology, Leaf Angle, and Leaf Area Density

Functional Crown Architecture of Five Temperate Broadleaf Tree Species: Vertical Gradients in Leaf Morphology, Leaf Angle, and Leaf Area Density

Annually resolved δ&lt;sup&gt;2&lt;/sup&gt;H tree-ring chronology of the lignin methoxyl groups from Germany reflects averaged Western European surface air temperature changes

Functional Traits of Medicinal Plant Species Under Different Ecological Conditions

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Annually resolved δ<sup>2</sup>H tree-ring chronology of the lignin methoxyl groups from Germany reflects averaged Western European surface air temperature changes