Dendrochronologia最新文献

英文中文

On the meaning of community-level tree-growth signal in a tropical forest restoration

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-04-04 DOI: 10.1016/j.dendro.2025.126334

Gabriela Morais Olmedo , Juliano Morales de Oliveira , Maycon da Silva Teixeira , Guilherme José Mores , Vera Lex Engel , Mario Tomazello-Filho

Ecological restoration is a global need, particularly in the tropics. Dendrochronological research could boost basic and applied knowledge for tropical restoration projects. Here, we explored whether trees in restoration programs of the Atlantic Rainforest form growth rings prone to crossdating and analysis of climatic signals. We analyzed 43 trees distributed across the 18 most common species in two restoration stands. Trees (35) from all the species evidenced crossdatable growth rings, allowing us to construct a robust multi-species ring-width chronology. This unprecedented community-level signal in the tropics was determined by a one-year lagged tree-growth response to water availability and temperature. The dynamics of non-structural carbohydrates (NSC) are likely involved in this delayed climatic effect. Relatively homogeneous light conditions among trees in the stands would be critical for detecting the growth signal. Whether such a community-level signal would be found elsewhere and the role of NSC in mediating tree growth responses to climate deserve further investigation. Tree-ring analysis allowed us to assess the climatic sensitivity of a forest community undergoing restoration and could further address several other relevant issues towards restoring tropical ecosystems. On the other hand, restoration projects offer a unique experimental setting to advance tropical dendrochronology.

{"title":"On the meaning of community-level tree-growth signal in a tropical forest restoration","authors":"Gabriela Morais Olmedo , Juliano Morales de Oliveira , Maycon da Silva Teixeira , Guilherme José Mores , Vera Lex Engel , Mario Tomazello-Filho","doi":"10.1016/j.dendro.2025.126334","DOIUrl":"10.1016/j.dendro.2025.126334","url":null,"abstract":"<div><div>Ecological restoration is a global need, particularly in the tropics. Dendrochronological research could boost basic and applied knowledge for tropical restoration projects. Here, we explored whether trees in restoration programs of the Atlantic Rainforest form growth rings prone to crossdating and analysis of climatic signals. We analyzed 43 trees distributed across the 18 most common species in two restoration stands. Trees (35) from all the species evidenced crossdatable growth rings, allowing us to construct a robust multi-species ring-width chronology. This unprecedented community-level signal in the tropics was determined by a one-year lagged tree-growth response to water availability and temperature. The dynamics of non-structural carbohydrates (NSC) are likely involved in this delayed climatic effect. Relatively homogeneous light conditions among trees in the stands would be critical for detecting the growth signal. Whether such a community-level signal would be found elsewhere and the role of NSC in mediating tree growth responses to climate deserve further investigation. Tree-ring analysis allowed us to assess the climatic sensitivity of a forest community undergoing restoration and could further address several other relevant issues towards restoring tropical ecosystems. On the other hand, restoration projects offer a unique experimental setting to advance tropical dendrochronology.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"91 ","pages":"Article 126334"},"PeriodicalIF":2.7,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143791903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding physiological mechanisms of European beech dieback responses to climate using a triple isotope approach in northern Switzerland

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-04-04 DOI: 10.1016/j.dendro.2025.126335

Anna Neycken , Marco M. Lehmann , Matthias Saurer , Thomas Wohlgemuth , Esther R. Frei , Mathieu Lévesque

To investigate which physiological predispositions led to the drought-induced vitality decline in beech (Fagus sylvatica L.) following the severe 2018 drought, we studied trees with premature leaf discoloration and shedding (early-browning trees) and trees showing no symptoms (vital trees) in a forest in northern Switzerland. We analyzed annual tree-ring width (TRW) and applied a triple isotope approach (i.e., carbon (δ¹³C), oxygen (δ¹⁸O), and hydrogen (δ²H) isotopes) in tree-ring cellulose for the period 1960–2020. To retrieve tree physiological responses, we normalized the tree-ring δ values to temporal isotopic variations in CO₂ or precipitation (Δ). Δ¹³C and Δ¹⁸O values suggest that the early-browning trees had a more conservative water-use strategy and lower stomatal conductance than the vital trees in the initial decades of the measurement period. However, several decades before the onset of crown dieback in 2018, the early-browning trees showed a decrease in TRW and an increase in Δ²H, suggesting a higher use of carbon reserves for the early-browning trees. These long-term trends may be the first signs of a progressive deterioration of the physiology of the early-browning trees. During and after the 2018 drought, changes in Δ²H suggested high carbon investments into drought damage repair for the early-browning trees. Moreover, a higher TRW and isotope sensitivity to previous year’s summer climate in early-browning than vital trees suggests stronger negative carry-over effects. Our findings highlight that the early-browning trees may have already been weakened before the 2018 drought, eventually pushing them beyond their physiological tipping points and inducing dieback.

{"title":"Understanding physiological mechanisms of European beech dieback responses to climate using a triple isotope approach in northern Switzerland","authors":"Anna Neycken , Marco M. Lehmann , Matthias Saurer , Thomas Wohlgemuth , Esther R. Frei , Mathieu Lévesque","doi":"10.1016/j.dendro.2025.126335","DOIUrl":"10.1016/j.dendro.2025.126335","url":null,"abstract":"<div><div>To investigate which physiological predispositions led to the drought-induced vitality decline in beech (<em>Fagus sylvatica</em> L.) following the severe 2018 drought, we studied trees with premature leaf discoloration and shedding (early-browning trees) and trees showing no symptoms (vital trees) in a forest in northern Switzerland. We analyzed annual tree-ring width (TRW) and applied a triple isotope approach (i.e., carbon (δ<sup>13</sup>C), oxygen (δ<sup>18</sup>O), and hydrogen (δ<sup>2</sup>H) isotopes) in tree-ring cellulose for the period 1960–2020. To retrieve tree physiological responses, we normalized the tree-ring δ values to temporal isotopic variations in CO<sub>2</sub> or precipitation (Δ). Δ<sup>13</sup>C and Δ<sup>18</sup>O values suggest that the early-browning trees had a more conservative water-use strategy and lower stomatal conductance than the vital trees in the initial decades of the measurement period. However, several decades before the onset of crown dieback in 2018, the early-browning trees showed a decrease in TRW and an increase in Δ<sup>2</sup>H, suggesting a higher use of carbon reserves for the early-browning trees. These long-term trends may be the first signs of a progressive deterioration of the physiology of the early-browning trees. During and after the 2018 drought, changes in Δ<sup>2</sup>H suggested high carbon investments into drought damage repair for the early-browning trees. Moreover, a higher TRW and isotope sensitivity to previous year’s summer climate in early-browning than vital trees suggests stronger negative carry-over effects. Our findings highlight that the early-browning trees may have already been weakened before the 2018 drought, eventually pushing them beyond their physiological tipping points and inducing dieback.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"91 ","pages":"Article 126335"},"PeriodicalIF":2.7,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reconsidering the use of t-statistics in dendroprovenancing

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-04-01 DOI: 10.1016/j.dendro.2025.126332

Mauro Bernabei , Pietro Franceschi

The t-statistic is a well-established parameter widely used in dendrochronology for cross-dating and, at least in preliminary stages, for dendroprovenancing. However, its application has increasingly been questioned due to its volatile validity and lack of clear statistical validation. This has prompted the adoption of alternative methods, though their implementation in dendroarchaeological contexts often presents challenges. This note aims to clarify key aspects of the t-statistic and its associated Pearson’s correlation coefficient in the context of dendroprovenance. In previous work, the authors demonstrated that, within the same species, a strong relationship exists between series correlation and geographic distance: higher correlations typically correspond to shorter distances between tree growth sites. Here, the focus shifts from the correlation coefficient to the t-statistic, highlighting both its potential and its limitations. Unlike the linear relationship observed between distance and Pearson’s correlation coefficient, the association between distance and the t-statistic is more pronounced at shorter distances, where correlations are higher. Additionally, the overlap between the tree-ring series has important implications in dendroprovenance analyses as a greater overlap facilitates high t_BP values by making these values less informative.

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引用次数: 0

Deciphering the meaning of "blue" in dendrochronology and wood anatomy

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-03-25 DOI: 10.1016/j.dendro.2025.126330

Alma Piermattei , Francesco Maimone , Alan Crivellaro

The colour blue has recently become popular in dendrochronology. Two parameters, blue intensity (BI) and blue rings (BRs), are frequently confused, leading to misinterpretations of tree-ring data and potentially overlooking their distinct physiological meanings. This note clarifies the difference between BI, a surrogate for traditional wood density measurements that quantifies the reflectance of blue light from cross-section surfaces, and BRs, an anatomical anomaly characterised by reduced cell wall lignification. We briefly discuss their origins, detection methods, applications, and significance in understanding environmental stress and tree growth patterns.

引用次数: 0

Uncovering the past of a historical park in Ukraine using tree rings

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-03-23 DOI: 10.1016/j.dendro.2025.126328

Yulia Prokopuk , Oleksandr Sylenko , Nataliia Doiko , Nina Dragan , Maksym Netsvetov

This study presents the first detailed dendrochronological research of old trees in Olexandria park, a historical landscape garden established by the Branicki family in the late 18th century in Ukraine. By analyzing tree-ring data from the oldest trees in the park, we aimed to refine our understanding of its developmental stages and verify long-held historical narratives. Our results reveal that native species, Quercus robur and Pinus sylvestris, are the oldest tree specimens in the park, with the piths dating back to the late 18th century respectively. This suggests that the initial stage (1787–1791) of park development may have begun earlier than previously thought or that existing old-growth forest trees were integrated into the park's design. Additionally, the age of the oldest non-native species indicates they were planted during the third stage of development (1815–1865), with further plantings occurring during the fourth stage (1865–1918). Our study supports the idea that this historical park has been continuously modified and developed throughout its history from the late 18th to early 20th century. Contrary to some long-held narratives, most of the studied trees are not gifts from Catherine II or Grigory Potemkin, nor were they planted by the Romanov family; rather, some are older than previously expected.

{"title":"Uncovering the past of a historical park in Ukraine using tree rings","authors":"Yulia Prokopuk , Oleksandr Sylenko , Nataliia Doiko , Nina Dragan , Maksym Netsvetov","doi":"10.1016/j.dendro.2025.126328","DOIUrl":"10.1016/j.dendro.2025.126328","url":null,"abstract":"<div><div>This study presents the first detailed dendrochronological research of old trees in Olexandria park, a historical landscape garden established by the Branicki family in the late 18th century in Ukraine. By analyzing tree-ring data from the oldest trees in the park, we aimed to refine our understanding of its developmental stages and verify long-held historical narratives. Our results reveal that native species, <em>Quercus robur</em> and <em>Pinus sylvestris</em>, are the oldest tree specimens in the park, with the piths dating back to the late 18th century respectively. This suggests that the initial stage (1787–1791) of park development may have begun earlier than previously thought or that existing old-growth forest trees were integrated into the park's design. Additionally, the age of the oldest non-native species indicates they were planted during the third stage of development (1815–1865), with further plantings occurring during the fourth stage (1865–1918). Our study supports the idea that this historical park has been continuously modified and developed throughout its history from the late 18th to early 20th century. Contrary to some long-held narratives, most of the studied trees are not gifts from Catherine II or Grigory Potemkin, nor were they planted by the Romanov family; rather, some are older than previously expected.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"91 ","pages":"Article 126328"},"PeriodicalIF":2.7,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Geographic variability of the climate response of Scots pine (Pinus sylvestris L.) radial growth in the Middle Urals

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-03-18 DOI: 10.1016/j.dendro.2025.126329

N.M. Devi, M.O. Bubnov, V.V. Kukarskih

This research examines the impact of climate on the radial growth of Scots pine trees across 20 locations spanning a 500 km transect of the Middle Urals, Russia. The study utilized 430 individual tree-ring chronologies to construct three generalized chronologies, ranging from 76 to 292 years in duration. The individual chronologies were aggregated by groups using cluster analysis. The results indicate that precipitation in May-June has a positive impact, while temperature during the same period negatively affects pine radial growth in the South-East part of the region. For the South-West part of the gradient, temperature conditions become uninfluential. But there is a positive effect of summer precipitation on growth. This suggests that Scots pine growth in the southern regions of the Middle Urals is constrained by moisture availability. The northernmost chronology exhibited no significant correlations between radial growth and precipitation conditions, while the influence of summer temperatures (July) becomes positive. These observations imply that Scots pine trees north of 58° N may experience improved growth due to the observed warming trend, whereas those in southern areas might see reduced radial growth because of increasing moisture deficiency.

{"title":"Geographic variability of the climate response of Scots pine (Pinus sylvestris L.) radial growth in the Middle Urals","authors":"N.M. Devi, M.O. Bubnov, V.V. Kukarskih","doi":"10.1016/j.dendro.2025.126329","DOIUrl":"10.1016/j.dendro.2025.126329","url":null,"abstract":"<div><div>This research examines the impact of climate on the radial growth of Scots pine trees across 20 locations spanning a 500 km transect of the Middle Urals, Russia. The study utilized 430 individual tree-ring chronologies to construct three generalized chronologies, ranging from 76 to 292 years in duration. The individual chronologies were aggregated by groups using cluster analysis. The results indicate that precipitation in May-June has a positive impact, while temperature during the same period negatively affects pine radial growth in the South-East part of the region. For the South-West part of the gradient, temperature conditions become uninfluential. But there is a positive effect of summer precipitation on growth. This suggests that Scots pine growth in the southern regions of the Middle Urals is constrained by moisture availability. The northernmost chronology exhibited no significant correlations between radial growth and precipitation conditions, while the influence of summer temperatures (July) becomes positive. These observations imply that Scots pine trees north of 58° N may experience improved growth due to the observed warming trend, whereas those in southern areas might see reduced radial growth because of increasing moisture deficiency.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"91 ","pages":"Article 126329"},"PeriodicalIF":2.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Climate and biological factors co-regulate the drought resilience of Pinus tabulaeformis

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-03-15 DOI: 10.1016/j.dendro.2025.126327

Zhenjiang Li , Liu Yang , Guanjie Wang, Ting Wang, Chenyi Yu, Shengyun Liu, Qin Huang, Ximei Li

Severe drought can threaten the structure and function of forest ecosystems by profoundly altering plant growth and mortality. Identifying the drivers influencing drought resilience is essential for understanding the global warming effect on the forest ecosystem. However, the direct and indirect impacts of multiple climate and biological factors on drought resilience remain unquantified, and a potential mechanistic pathway remains unexplored. Here, we aimed to quantify the drought resistance, recovery, and resilience of Pinus tabulaeformis using the basal area increment. We showed that the Palmer Drought Severity Index had a significant direct positive impact on resistance, negative impact on recovery, but non-significant impact on resilience. Tree age and pre-drought basal area increments (preBAI) had significant direct negative effects on recovery and resilience, while only preBAI significantly affected resistance. Additionally, the competition index had a relatively minor direct effect on resistance, recovery, and resilience but exerted a significant negative influence on recovery by limiting the diameter at breast height (DBH). This research suggests that climate and biological factors co-regulate the drought resilience of Pinus tabulaeformis in this region. Resistance and recovery are primarily constrained by PDSI, while resilience mainly depends on individual tree characteristics. Biotic factors and climate directly affect resilience but competition restricts recovery by mediating DBH. The findings emphasize the importance of considering both biological and abiotic factors in forest management strategies to enhance ecosystem stability under future climate change.

{"title":"Climate and biological factors co-regulate the drought resilience of Pinus tabulaeformis","authors":"Zhenjiang Li , Liu Yang , Guanjie Wang, Ting Wang, Chenyi Yu, Shengyun Liu, Qin Huang, Ximei Li","doi":"10.1016/j.dendro.2025.126327","DOIUrl":"10.1016/j.dendro.2025.126327","url":null,"abstract":"<div><div>Severe drought can threaten the structure and function of forest ecosystems by profoundly altering plant growth and mortality. Identifying the drivers influencing drought resilience is essential for understanding the global warming effect on the forest ecosystem. However, the direct and indirect impacts of multiple climate and biological factors on drought resilience remain unquantified, and a potential mechanistic pathway remains unexplored. Here, we aimed to quantify the drought resistance, recovery, and resilience of <em>Pinus tabulaeformis</em> using the basal area increment. We showed that the Palmer Drought Severity Index had a significant direct positive impact on resistance, negative impact on recovery, but non-significant impact on resilience. Tree age and pre-drought basal area increments (preBAI) had significant direct negative effects on recovery and resilience, while only preBAI significantly affected resistance. Additionally, the competition index had a relatively minor direct effect on resistance, recovery, and resilience but exerted a significant negative influence on recovery by limiting the diameter at breast height (DBH). This research suggests that climate and biological factors co-regulate the drought resilience of <em>Pinus tabulaeformis</em> in this region. Resistance and recovery are primarily constrained by PDSI, while resilience mainly depends on individual tree characteristics. Biotic factors and climate directly affect resilience but competition restricts recovery by mediating DBH. The findings emphasize the importance of considering both biological and abiotic factors in forest management strategies to enhance ecosystem stability under future climate change.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"91 ","pages":"Article 126327"},"PeriodicalIF":2.7,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Growth rates and responses to climate and aridity of Algerian Atlas pistachio populations

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-03-13 DOI: 10.1016/j.dendro.2025.126326

Naima Ifticene-Habani , J. Julio Camarero , Fatiha Abdoun

The Atlas pistachio (Pistacia atlantica) is a minor hardwood species threatened due to overexploitation in some regions of the Maghreb, but it shows an extraordinary ecological plasticity inhabiting sites subjected from Mediterranean humid to arid conditions. To assess the drought tolerance of this understudied species, we sampled three Algerian populations along a N-S gradient of increasing aridity: Theniet el Had (sub-humid site, H), Djelba (semi-arid or dry site, D) and Béchar (arid site, A). First, ring-width chronologies were built. Second, correlations between ring-width indices, climate variables, a drought index and teleconnection indices (NAO, North Atlantic Oscillation; MOI, Mediterranean Oscillation index; SOI, Southern Oscillation Index; SaOI, Sahara Oscillation Index) were calculated. A high precipitation in the previous autumn and winter enhanced radial growth of Atlas pistachio and also high June precipitation in the wettest site H. In the driest site A, high maximum temperatures in spring constrained growth. High minimum temperatures in late summer and early autumn enhanced growth in sites D and A, which showed similar year-to-year growth variability (r = 0.426, p = 0.015, period 1980–2011). Correlations with a drought index peaked in the driest site A from September to December. Positive relationships between growth and drought indices in spring and autumn suggest a bimodal growth pattern. The three sites showed positive correlations between growth indices and the April MOI. However, negative relationships were found for January NAO or MOI and spring indices (June NAO, May SOI) in site H. Here, growth rates were negatively related to the SaOI. The Atlas pistachio shows a remarkable drought tolerance and its climate-growth relationships indicate plastic growth responses to precipitation variability.

{"title":"Growth rates and responses to climate and aridity of Algerian Atlas pistachio populations","authors":"Naima Ifticene-Habani , J. Julio Camarero , Fatiha Abdoun","doi":"10.1016/j.dendro.2025.126326","DOIUrl":"10.1016/j.dendro.2025.126326","url":null,"abstract":"<div><div>The Atlas pistachio (<em>Pistacia atlantica</em>) is a minor hardwood species threatened due to overexploitation in some regions of the Maghreb, but it shows an extraordinary ecological plasticity inhabiting sites subjected from Mediterranean humid to arid conditions. To assess the drought tolerance of this understudied species, we sampled three Algerian populations along a N-S gradient of increasing aridity: Theniet el Had (sub-humid site, H), Djelba (semi-arid or dry site, D) and Béchar (arid site, A). First, ring-width chronologies were built. Second, correlations between ring-width indices, climate variables, a drought index and teleconnection indices (NAO, North Atlantic Oscillation; MOI, Mediterranean Oscillation index; SOI, Southern Oscillation Index; SaOI, Sahara Oscillation Index) were calculated. A high precipitation in the previous autumn and winter enhanced radial growth of Atlas pistachio and also high June precipitation in the wettest site H. In the driest site A, high maximum temperatures in spring constrained growth. High minimum temperatures in late summer and early autumn enhanced growth in sites D and A, which showed similar year-to-year growth variability (<em>r</em> = 0.426, <em>p</em> = 0.015, period 1980–2011). Correlations with a drought index peaked in the driest site A from September to December. Positive relationships between growth and drought indices in spring and autumn suggest a bimodal growth pattern. The three sites showed positive correlations between growth indices and the April MOI. However, negative relationships were found for January NAO or MOI and spring indices (June NAO, May SOI) in site H. Here, growth rates were negatively related to the SaOI. The Atlas pistachio shows a remarkable drought tolerance and its climate-growth relationships indicate plastic growth responses to precipitation variability.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"91 ","pages":"Article 126326"},"PeriodicalIF":2.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to “Pointer years revisited: Does one method fit all? A clarifying discussion” [Dendrochronologia 78 (2023) 126064]

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-03-12 DOI: 10.1016/j.dendro.2025.126323

Gottfried Jetschke , Ernst van der Maaten , Marieke van der Maaten-Theunissen

引用次数: 0

Drought limits growth and hydraulic capacity of two ecologically and economically important tree species in the Lesser Caucasus

IF 2.7 3区农林科学 Q1 FORESTRY

Dendrochronologia

Pub Date : 2025-03-08 DOI: 10.1016/j.dendro.2025.126302

Jannis Voß , Georgios Skiadaresis , Robert Linne , Vahe Matsakyan , Andrea Seim

Global climate change is expected to strongly impact the biodiverse forest ecosystems in the mountain forests of Armenia. It is still uncertain how climate variability and especially extreme drought events affect the two ecologically and economically important tree species, oak (Quercus macranthera Fisch. & C. A. Mey. ex Hohen) and beech (Fagus orientalis Lipsky). However, this is crucial for designing suitable management practices and guiding future restoration efforts. Here, we investigated the overall climate sensitivity and response to extreme climate events of 14 oak and 22 beech trees from the Tavush province, north-eastern Armenia, based on tree-ring and vessel-related parameters for the period 1950 – 2011. We found that drought conditions mostly limit oak growth during spring, while water availability during summer is most important to beech growth, which is consistent with their wood anatomical characteristics. Climate-growth relationships for both species were not stable over the investigated period and indicated increasing growth sensitivity to water availability in the last decades. This trend was more pronounced for beech than for oak. During extreme dry years, annual growth increment and hydraulic conductivity of both species were significantly reduced but appeared to recover within the following two years. We found that both species can tolerate extreme drought conditions and should therefore be considered for future reforestation efforts. However, as the timing, frequency and intensity of droughts are expected to change in the future, further assessment and monitoring of these two important tree species is needed.

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