Year-to-year crown condition poorly contributes to ring width variations of beech trees in French ICP level I network

Tallieu, Clara; Badeau, Vincent; Allard, Denis; Nageleisen, Louis-Michel; Bréda, Nathalie

doi:10.1016/j.foreco.2020.118071

Cited by 16 publications

(5 citation statements)

References 92 publications

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“…The weakness of ring width as an indicator is also shown by tree-ring studies of trees grouped into vitality classes to test growth differences between the classes [47]. While many of these studies show decreased growth and higher crown transparency, others show no such relation [48], or no relationship at low to moderate levels of transparency [49]. Although it has been demonstrated that crown transparency correlates with subsequent tree mortality in some cases [50], an unambiguous relationship between crown transparency and tree growth cannot be demonstrated.…”

Section: Tree-ring Growthmentioning

confidence: 99%

Tree Vitality and Forest Health: Can Tree-Ring Stable Isotopes Be Used as Indicators?

2021

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Purpose of Review Society is concerned about the long-term condition of the forests. Although a clear definition of forest health is still missing, to evaluate forest health, monitoring efforts in the past 40 years have concentrated on the assessment of tree vitality, trying to estimate tree photosynthesis rates and productivity. Used in monitoring forest decline in Central Europe since the 1980s, crown foliage transparency has been commonly believed to be the best indicator of tree condition in relation to air pollution, although annual variations appear more closely related to water stress. Although crown transparency is not a good indicator of tree photosynthesis rates, defoliation is still one of the most used indicators of tree vitality. Tree rings have been often used as indicators of past productivity. However, long-term tree growth trends are difficult to interpret because of sampling bias, and ring width patterns do not provide any information about tree physiological processes. Recent Findings In the past two decades, tree-ring stable isotopes have been used not only to reconstruct the impact of past climatic events, such as drought, but also in the study of forest decline induced by air pollution episodes, and other natural disturbances and environmental stress, such as pest outbreaks and wildfires. They have proven to be useful tools for understanding physiological processes and tree response to such stress factors. Summary Tree-ring stable isotopes integrate crown transpiration rates and photosynthesis rates and may enhance our understanding of tree vitality. They are promising indicators of tree vitality. We call for the use of tree-ring stable isotopes in future monitoring programmes.

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Section: Tree-ring Growthmentioning

confidence: 99%

Tree Vitality and Forest Health: Can Tree-Ring Stable Isotopes Be Used as Indicators?

2021

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“…For instance, Gottardini et al [ 22 ] found that various morphological and physiological characteristics of beech leaves and canopy such as leaf volume and photosynthetic activity, had a significant negative association with the extent of damage. Additionally, Ferretti et al [ 62 ] showed that the 25%-defoliation threshold can be a reasonable approximation for tree classification indicated by the effect of slight and moderate variations in defoliation on tree growth, which is in contrast to the results obtained by Tallieu [ 63 ]. Highly differing research results on this topic are likely depending on the research area, management practices, climate influences and other unknown factors.…”

Section: Discussionmentioning

confidence: 98%

The Effect of Environmental Factors on the Nutrition of European Beech (Fagus sylvatica L.) Varies with Defoliation

Ognjenović¹,

Seletković

Marušić

et al. 2022

Plants

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Despite being adapted to a wide range of environmental conditions, the vitality of European beech is expected to be significantly affected by the projected effects of climate change, which we attempted to assess with foliar nutrition and crown defoliation, as two different, yet interlinked vitality indicators. Based on 28 beech plots of the ICP Forests Level I network, we set out to investigate the nutritional status of beech in Croatia, the relation of its defoliation and nutrient status, and the effects of environmental factors on this relation. The results indicate a generally satisfactory nutrition of common beech in Croatia. Links between defoliation and nutrition of beech are not very direct or very prominent; differences were observed only in some years and on limited number of plots. However, the applied multinomial logistic regression models show that environmental factors affect the relationship between defoliation and nutrition, as climate and altitude influence the occurrence of differences in foliar nutrition between defoliation categories.

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“…One of the tools for examining the sensitivity of trees to drought is dendrochronology [26,27]. In forest stands under environmental stress, tree rings have often been used as indicators of tree vitality [28,29]. The formation of annual growth rings is a consequence of the micro/macroenvironmental conditions in which trees live [28].…”

Section: Introductionmentioning

confidence: 99%

Drought Impact on Eco-Physiological Responses and Growth Performance of Healthy and Declining Pinus sylvestris L. Trees Growing in a Dry Area of Southern Poland

Benisiewicz,

Pawełczyk,

Niccoli

et al. 2024

Forests

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In recent years, several drought events hit Poland, affecting its forests. In Opole, Poland, tons of Pinus sylvestris L. deadwood is removed every year due to drought. Understanding the physiological mechanisms underlying tree vulnerability to drought, and tree responses, is important to develop forest management strategies to face the ongoing climate change. This research provides comprehensive local-scale analyses of the sensitivity of healthy and declining trees to drought. We used dendrochronology and stable isotope analysis to compare five healthy and five declining trees. The analysis focused particularly on comparisons of basal area increment (BAI), δ13C, and intrinsic water-use efficiency (iWUE), as well as tree resistance, resilience, and recovery in response to drought events and sensitivity to selected meteorological parameters. We observed a significant reduction in BAI values in declining trees after 2000. Fifteen years later, the reduction was also visible in the iWUE values of these trees. Despite similar δ13C chronology patterns, declining trees showed higher δ13C correlations with meteorological parameters. We have shown that dendrochronology enables early detection of poor forest health conditions. Differences in iWUE chronologies occurring in recent years suggest that trees of both groups have chosen different adaptive strategies to cope with drought stress.

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Year-to-year crown condition poorly contributes to ring width variations of beech trees in French ICP level I network

Cited by 16 publications

References 92 publications

Tree Vitality and Forest Health: Can Tree-Ring Stable Isotopes Be Used as Indicators?

Tree Vitality and Forest Health: Can Tree-Ring Stable Isotopes Be Used as Indicators?

The Effect of Environmental Factors on the Nutrition of European Beech (Fagus sylvatica L.) Varies with Defoliation

Drought Impact on Eco-Physiological Responses and Growth Performance of Healthy and Declining Pinus sylvestris L. Trees Growing in a Dry Area of Southern Poland

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