Higher susceptibility of beech to drought in comparison to oak

Meyer, Benjamin F.; Buras, Allan; Rammig, Anja; Zang, Christian

doi:10.1016/j.dendro.2020.125780

Cited by 35 publications

(36 citation statements)

References 69 publications

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“…In general, tree growth of diffuse porous species such as beech is found to be more responsive to stress than ring porous species such as oak (Meyer et al, 2020). This may explain the differences observed in this study between the beech stands at the Darney site and the oak stands trees at the Champenoux site.…”

Section: Discussionmentioning

confidence: 58%

Removing Harvest Residues from Hardwood Stands Affects Tree Growth, Wood Density and Stem Wood Nutrient Concentration in European Beech (Fagus Sylvatica) and Oak (Quercus spp.)

Roy

Leban

Zeller

et al. 2021

Preprint

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Background: Increased exportation of harvest residues from forests, to mitigate excessive demand for woody biomass, have reportedly diminished soil mineral resources and may lead to degraded tree nutrition and tree growth. However, as nutrients become less available in the soil, the remobilization of nutrients in biomass tissues (plant internal cycling) helps sustain tree nutrition. Our study aims to quantify the impact of Removing Harvest Residues and Litter (RHRL) during five years on tree growth, wood density and stem wood nutrient concentrations in young beech and oak forest stands.Result: Our study found that, RHRL significantly decreased the tree growth ring width, by 14%, and wood density, by 3%, in beech trees, in the near bark rings. RHRL also significantly reduced the nutrient concentration in the near bark and near pith area of both species. Mg, Na and S were found lower by 44%, 76% and 56%, respectively, in the near bark area of beech trees, and K, Ca, Mg, Na, S and Fe were lower by 20%, 25%, 41%, 48%, 41% and 16%, respectively, in the near bark area of oak trees. K and Mg concentrations decreased more strongly in the near pith area compared to the near bark area suggesting internal translocation of these two elements. Conclusion: In beech trees, wood density proved to be an important factor while quantifying the effect of removing harvest residuals on the tree growth and biomass. Soil nutrient loss intensified the remobilization of nutrients contained in older tree rings (close to the pith) towards newly formed rings (close to bark). In our study, in beech trees, K was found to be the most recycled major nutrient. These results demonstrate the potential of such analysis for providing valuable insight into the effect of RHRL in premature stands on the physiological adaptive strategies of trees and an indication of soil fertility and acidity status.

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Section: Discussionmentioning

confidence: 58%

Removing Harvest Residues from Hardwood Stands Affects Tree Growth, Wood Density and Stem Wood Nutrient Concentration in European Beech (Fagus Sylvatica) and Oak (Quercus spp.)

Roy

Leban

Zeller

et al. 2021

Preprint

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“…These authors hypothesized this observation to be caused by post-drought photosynthesis upregulation and carbon allocation in favor of canopy repair (recovering NDVI) at the expense of secondary growth (reducing tree-ring width). In another study, the link between NDVI and secondary tree-growth differed between non-drought and drought conditions (Meyer et al, 2020 ): while tree-ring width was most closely linked with the start of season NDVI under non-drought conditions, peak-season NDVI better reflected secondary growth decline under drought conditions. The link of spring NDVI with tree-growth under normal conditions is probably caused by the overarching effect of spring conditions on secondary growth of trees growing in temperate climates (Buras et al, 2018 ; Kannenberg et al, 2019 ), while the link under drought conditions with summer NDVI likely reflects early leaf coloration or senescence which result in reduced ring-widths (Meyer et al, 2020 ; Schuldt et al, 2020 ).…”

Section: Discussionmentioning

confidence: 98%

“…In another study, the link between NDVI and secondary tree-growth differed between non-drought and drought conditions (Meyer et al, 2020 ): while tree-ring width was most closely linked with the start of season NDVI under non-drought conditions, peak-season NDVI better reflected secondary growth decline under drought conditions. The link of spring NDVI with tree-growth under normal conditions is probably caused by the overarching effect of spring conditions on secondary growth of trees growing in temperate climates (Buras et al, 2018 ; Kannenberg et al, 2019 ), while the link under drought conditions with summer NDVI likely reflects early leaf coloration or senescence which result in reduced ring-widths (Meyer et al, 2020 ; Schuldt et al, 2020 ). On the global scale, the relationship between secondary growth and canopy greenness is further modified by tree-species, climate zone, and integration period of the NDVI signal (Vicente-Serrano et al, 2016 ; Bhuyan et al, 2017 ).…”

Section: Discussionmentioning

confidence: 98%

The European Forest Condition Monitor: Using Remotely Sensed Forest Greenness to Identify Hot Spots of Forest Decline

2021

Self Cite

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Forest decline, in course of climate change, has become a frequently observed phenomenon. Much of the observed decline has been associated with an increasing frequency of climate change induced hotter droughts while decline induced by flooding, late-frost, and storms also play an important role. As a consequence, tree mortality rates have increased across the globe. Despite numerous studies that have assessed forest decline and predisposing factors for tree mortality, we still lack an in-depth understanding of (I) underlying eco-physiological mechanisms, (II) the influence of varying environmental conditions related to soil, competition, and micro-climate, and (III) species-specific strategies to cope with prolonged environmental stress. To deepen our knowledge within this context, studying tree performance within larger networks seems a promising research avenue. Ideally such networks are already established during the actual period of environmental stress. One approach for identifying stressed forests suitable for such monitoring networks is to assess measures related to tree vitality in near real-time across large regions by means of satellite-borne remote sensing. Within this context, we introduce the European Forest Condition monitor (EFCM)—a remote-sensing based, freely available, interactive web information tool. The EFCM depicts forest greenness (as approximated using NDVI from MODIS at a spatial resolution of roughly 5.3 hectares) for the pixel-specific growing season across Europe and consequently allows for guiding research within the context of concurrent forest performance. To allow for inter-temporal comparability and account for pixel-specific features, all observations are set in relation to normalized difference vegetation index (NDVI) records over the monitoring period beginning in 2001. The EFCM provides both a quantile-based and a proportion-based product, thereby allowing for both relative and absolute comparison of forest greenness over the observational record. Based on six specific examples related to spring phenology, drought, late-frost, tree die-back on water-logged soils, an ice storm, and windthrow we exemplify how the EFCM may help identifying hotspots of extraordinary forest greenness. We discuss advantages and limitations when monitoring forest condition at large scales on the basis of moderate resolution remote sensing products to guide users toward an appropriate interpretation.

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“…Little] along the Pacific coast of British Columbia (BC), Canada and Alaska, United States (Schaberg et al, 2008;Hennon et al, 2012) and yellow birch (Betula alleghaniensis) in eastern forests of North America (Bourque et al, 2005). Predicting the response of forests to climate is highly species-specific, as tree species have unique environmental adaptions and competitive strategies (Lévesque et al, 2013;Meyer et al, 2020), and within a species there can be divergence in climate-growth responses through time (D'Arrigo et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Contrasting Impacts of Climate Warming on Coastal Old-Growth Tree Species Reveal an Early Warning of Forest Decline

Mercer

Comeau

Daniels

et al. 2022

Front. For. Glob. Change

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Old-growth forests in the Pacific Northwest are being fundamentally altered by climate change. A primary example of this is yellow-cedar (Callitropsis nootkatensis), a culturally and economically important species, which has suffered widespread decline across its range since the beginning of the twentieth century. We used tree rings to compare the climate-growth response of yellow-cedar to two co-occurring species; western hemlock (Tsuga heterophylla) and Sitka spruce (Picea sitchensis), in an old-growth forest on Haida Gwaii, Canada, to better understand the unique climatic drivers of a species that is declining across its range. We developed three species-specific chronologies spanning 560–770 years, reconstructing a long-term record of species growth and dynamics over time. The climate is strongly influenced by the Pacific Decadal Oscillation (PDO), a multi-decadal pattern of ocean-atmospheric climate variability. Climate varied across three time periods that have coincided with major shifts in the PDO during the twentieth century [1901–1945 (neutral/positive), 1946–1976 (negative) and 1977–2015 (positive)]. Conditions were significantly warmer and wetter during positive phases, with the greatest maximum temperatures in the most recent period. We used complimentary methods of comparison, including Morlet wavelet analysis, Pearson correlations, and linear-mixed effects modeling to investigate the relations between climate and species growth. All three species exhibited multi-decadal frequency variation, strongest for yellow-cedar, suggesting the influence of the PDO. Consistent with this, the strength and direction of climate-growth correlations varied among PDO phases. Growing season temperature in the year of ring formation was strongly positively correlated to yellow-cedar and western hemlock growth, most significantly in the latter two time periods, representing a release from a temperature limitation. Sitka spruce growth was only weakly associated with climate. Yellow-cedar responded negatively to winter temperature from 1977 to 2015, consistent with the decline mechanism. Increased yellow-cedar mortality has been linked to warmer winters and snow loss. This study provides new insights into yellow-cedar decline, finding the first evidence of decline-related growth patterns in an apparently healthy, productive coastal temperate rainforest.

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Higher susceptibility of beech to drought in comparison to oak

Cited by 35 publications

References 69 publications

Removing Harvest Residues from Hardwood Stands Affects Tree Growth, Wood Density and Stem Wood Nutrient Concentration in European Beech (Fagus Sylvatica) and Oak (Quercus spp.)

Removing Harvest Residues from Hardwood Stands Affects Tree Growth, Wood Density and Stem Wood Nutrient Concentration in European Beech (Fagus Sylvatica) and Oak (Quercus spp.)

The European Forest Condition Monitor: Using Remotely Sensed Forest Greenness to Identify Hot Spots of Forest Decline

Contrasting Impacts of Climate Warming on Coastal Old-Growth Tree Species Reveal an Early Warning of Forest Decline

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