The Impact of Drought, Normal Watering and Substrate Saturation on the Morphological and Physiological Condition of Container Seedlings of Narrow-Leaved Ash (Fraxinus angustifolia Vahl)

Drvodelić, Damir; Ugarković, Damir; Oršanić, Milan; Paulić, Vinko

doi:10.15177/seefor.16-11

Cited by 5 publications

(6 citation statements)

References 12 publications

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“…Beechnuts are triangular, and their width and thickness were measured on two sides. Very similar results considering analysed seed traits have been obtained by Drvodelić et al [39] who reported average seed length of 15.42 mm in the range of 14.50-16.33 mm, and average width of 8.14 mm in the range of 7.47-8.97 mm. Gradečki et al [38] reported average seed length of 14.89 mm in the range of 11.31-16.20 mm, and average width of 9.53 mm in the range of 7.63-10.34 mm.…”

Section: Discussionsupporting

confidence: 87%

“…This variability could have been caused by numerous factors, both environmental (e.g. weather, insects) [39] and genetic [44]. European beech is characterized by the possibility of selfpollination, which is an important cause of the occurrence of empty beech seeds [39].…”

Section: Discussionmentioning

confidence: 99%

“…weather, insects) [39] and genetic [44]. European beech is characterized by the possibility of selfpollination, which is an important cause of the occurrence of empty beech seeds [39]. In many forest tree species, controlled self-pollination results in a higher proportion of empty seeds than cross-or wind-pollination [53][54][55][56].…”

Section: Discussionmentioning

confidence: 99%

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Seed Yield and Morphological Variations of Beechnuts in Four European Beech (Fagus sylvatica L.) Populations in Croatia

Gavranović¹,

Bogdan²,

Lanšćak³

et al. 2018

SEEFOR

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

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Seed Yield and Morphological Variations of Beechnuts in Four European Beech (Fagus sylvatica L.) Populations in Croatia

Gavranović¹,

Bogdan²,

Lanšćak³

et al. 2018

SEEFOR

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“…Like other floodplain species, it is well adjusted to high levels of groundwater and limited by humidity shortage during drought periods 48 . Ash has a high tolerance for such extreme conditions, and it has no competition from any other tree species, which gives it the opportunity to dominate at the edges of wet lowland swamps 49 , 50 .…”

Section: Discussionmentioning

confidence: 99%

Drought-induced shift in tree response to climate in floodplain forests of Southeastern Europe

Mikac

Žmegač

Trlin

et al. 2018

Sci Rep

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Floodplain forests are the most rapidly disappearing ecosystem in the world, especially in temperate regions of Europe where anthropogenic influence has been pronounced throughout history. Research on primeval forests is crucial to further our understanding of their natural dynamics and interaction with climate but is limited by the lack of such preserved forests. The aim of this study was to investigate how a primeval floodplain forest in Southeastern Europe has responded to climate variability during the last 250 years through comparison of tree growth and climate, canopy disturbance and recruitment dynamic of two dominant tree species with different tolerances to flooding/drought. Our analysis revealed induced stress caused by several consecutive severe drought events in the 1940s, which led to a significant increase in sensitivity to increasing temperatures and decreasing river water levels. This trend is particularly pronounced in pedunculate oak. Age structure analysis revealed one larger episode of oak regeneration culminating after periods of intense growth release. Such period co-occurs with summer drought, which is part of a complex system of natural disturbances and a significant natural driver of the cyclical regeneration of primeval oak ecosystems.

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“…In Mediterranean basin the plant is often encountered in riparian corridors. In Croatia for example, narrow-leaved ash is considered as one of the most important tree species of lowland floodplain forests and its sensitivity to drought was shown (Drvodelic et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

The decline of Fraxinus angustifolia Vahl in a Mediterranean salt meadow: Chlorophyll fluorescence measurements in long-term field experiment

Mévy

Guibal

Lecareux

et al. 2020

Estuarine, Coastal and Shelf Science

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The ecological transition zones also known as ecotones are specific ecosystems but how global change will affect their biodiversity and functioning is poorly understood. In the case of the areas at the interface between riparian forest and salt meadows the biodiversity conservation remains a major issue. The aim of this work was to evaluate the effects of a salty environment on Fraxinus angustifolia a non-halophyte species. For this, the photochemistry of PSII was in situ explored during the summer between 2007 and 2016. The predawn maximum quantum efficiency of PSII (Fv/Fm) was always greater than 0.8 which indicates an absence of chronic photoinhibition induced by salinity. During these years, the light kinetic of the actual quantum yield of PSII (Φ PSII ) was studied. It appears that this yield is generally higher in salty environments than in the riparian forest. Multivariate analysis, showed that the dissipation regulated light energy faction (Φ NPQ ), the photochemical quenching (qP) and the Fd/Fs ratio constitute the main explanatory variables of Φ PSII changes. The subsequent twoway-ANCOVA carried out demonstrated that Φ NPQ was weaker in saline environments, suggesting a better efficiency of photosystem collecting antennas. Meanwhile, the analysis of photosynthetic pigments did not exhibited a salt effect except the significant accumulation of chlorophyll a in 2016.In order to address the question of the salt-related toxicity, sodium ion contents in the leaves were found to be identical in the two sites, suggesting the establishment of an energy-dependent mechanism of salt exclusion/retention in roots. The growth rings of F.angustifolia in saline areas highly follows the annual water deficit changes. Between 2007 and 2016, the biomass in the salt meadow was higher with a peak in 2011 representing 60% of the biomass of control individuals. But, since 2011 a J o u r n a l P r e -p r o o f 2 continuous decline of growth was recorded. Water conditions seem to constitute a limiting factor even if the photosynthetic apparatus generates the excess metabolic energy necessary to cope with the saline toxicity. This study thus highlighted the plasticity of the photochemistry of the PSII depending to the environmental conditions of the salt meadows. It also shows the vulnerability of an ecotone through the decline in the productivity of a glycophyte with climate change. This augurs for changes in the composition of plant communities which is in favor of strict halophytes.

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The Impact of Drought, Normal Watering and Substrate Saturation on the Morphological and Physiological Condition of Container Seedlings of Narrow-Leaved Ash (Fraxinus angustifolia Vahl)

Cited by 5 publications

References 12 publications

Seed Yield and Morphological Variations of Beechnuts in Four European Beech (Fagus sylvatica L.) Populations in Croatia

Seed Yield and Morphological Variations of Beechnuts in Four European Beech (Fagus sylvatica L.) Populations in Croatia

Drought-induced shift in tree response to climate in floodplain forests of Southeastern Europe

The decline of Fraxinus angustifolia Vahl in a Mediterranean salt meadow: Chlorophyll fluorescence measurements in long-term field experiment

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