Dendrochronologia最新文献

{"title":"Radial growth resilience of temperate deciduous oaks to drought events across aridity gradients in the southern Loess Plateau, China","authors":"Xiaoqi Chen ,&nbsp;Xiaomin Zeng ,&nbsp;Xiaohong Liu ,&nbsp;Huiyue Yan ,&nbsp;Quanxi Li ,&nbsp;Mao Wei","doi":"10.1016/j.dendro.2025.126468","DOIUrl":"10.1016/j.dendro.2025.126468","url":null,"abstract":"<div><div>Understanding how tree growth resilience responds to drought along aridity gradients is critical for conserving temperate forests in semi-arid regions under ongoing climate change, yet such assessments remain limited in northern China. Here, we investigated growth–climate relationships and drought resilience of two dominant oak species (<em>Quercus liaotungensis</em> and <em>Quercus variabilis</em>) across an aridity gradient in the southern Loess Plateau using tree-ring chronologies. Oak radial growth became progressively more dependent on water availability with increasing aridity, whereas temperature sensitivity remained consistently weak across sites, indicating a dominant control of moisture on growth. Along this gradient, oaks at drier sites exhibited lower resistance during drought but higher post-drought recovery, while trees at more humid sites showed the opposite pattern, revealing a clear resistance–recovery trade-off. Notably, compensatory growth following drought was observed at all sites, suggesting a common but context-dependent adaptive response to water stress. At relatively arid sites, the resistance–recovery relationship approached the theoretical “line of full resilience,” indicating a greater capacity to offset drought-induced growth losses through recovery-oriented strategies. Further analyses revealed that drought resilience was jointly regulated by baseline growth conditions, drought severity, and site-specific climatic sensitivity. Higher pre-drought growth potential constrained short-term recovery but enhanced long-term resilience, highlighting the dual role of baseline growth in shaping drought responses. Together, these findings demonstrate that oak populations in the southern Loess Plateau adopt distinct yet complementary resilience strategies along aridity gradients, shifting from resistance-dominated growth in humid environments to recovery and compensation-oriented strategies under increasing water limitation. This strategy differentiation provides new mechanistic insights into how oak forests persist under recurrent drought and offers a scientific basis for developing site-specific management strategies in the region.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"95 ","pages":"Article 126468"},"PeriodicalIF":2.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924916","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}

{"title":"Herbchronology of woody underground organs in the Brazilian tropical grassy ecosystems: Age estimates and dendrochronological potential","authors":"Claudia Fontana ,&nbsp;Gabriel Assis-Pereira ,&nbsp;Lidio López ,&nbsp;Tiago Marcilio Gomes-Pinto ,&nbsp;Cecília Leite Lemes ,&nbsp;Davi Neves de Lemos ,&nbsp;Maycon da Silva Teixeira ,&nbsp;Bruna Helena Campos ,&nbsp;Lucas Nogueira Gonçalves ,&nbsp;Natashi Pilon ,&nbsp;Mario Tomazello-Filho ,&nbsp;Giselda Durigan","doi":"10.1016/j.dendro.2026.126472","DOIUrl":"10.1016/j.dendro.2026.126472","url":null,"abstract":"<div><div>Herbchronology, a branch of dendrochronology, is dedicated to understanding the age structure and ecology of small plants, including perennial forbs, dwarf shrubs, and shrubs. In tropical grassy ecosystems, fire, frost or large herbivores can recurrently suppress the above-ground biomass of small plants, hindering age determination from the stems. Their underground organs, however, remain protected below the soil surface, allowing resprouting. Therefore, these organs attain greater longevity than the aboveground plant parts, likely corresponding to the true age of these plants. This exploratory study aimed at and (i) analyzing the growth layers to verify their distinctiveness and potential for herbchronological studies, and (ii) estimating the age of woody underground organs across various small plant species from different types of old-growth grasslands. Randomly collected samples from 204 plants were analyzed, encompassing 28 families and 107 species across three different grassland types within the Atlantic Forest and the Cerrado regions (Brazil). From all samples, 55 % exhibited distinct growth layers, highlighting the potential for centennial chronologies, despite limitations in species with low longevity and indistinct rings. Most samples were less than 10-year-old, but we found six individuals beyond 100-year-old. Higher ages were more frequent in Cerrado grasslands under long dry season, and no plants beyond 10-year-old were found in highland grasslands under the humid climate of the Atlantic Forest region. By validating a method to determine the age of small plants, our study provides the foundation for future research and, especially, allows to estimate the age of grassy ecosystems and thus strengthen the arguments in favor of their conservation.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"95 ","pages":"Article 126472"},"PeriodicalIF":2.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977086","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}

{"title":"Consistent summer temperature sensitivity in Scots pine trees contrasts with recent signal loss in Juniper shrubs at the northernmost treeline in Europe","authors":"Dominika Marsicka ,&nbsp;Katarzyna Oblińska ,&nbsp;Paweł Matulewski ,&nbsp;Ylva Sjöberg ,&nbsp;Agata Buchwal","doi":"10.1016/j.dendro.2026.126470","DOIUrl":"10.1016/j.dendro.2026.126470","url":null,"abstract":"<div><div>Climate change is rapidly transforming high latitude ecosystems, yet comparative growth responses between trees and shrubs at the northern treeline remain understudied. The Arctic and Sub-Arctic, including northern Scandinavia, has warmed nearly four times faster than the global average since 1979, leading to reduced snow cover and earlier onset of the growing season. These shifts highlight the need to understand how different life forms respond to ongoing warming. This study compares the climatic sensitivity of <em>Pinus sylvestris</em> L. trees and <em>Juniperus communis</em> L. shrubs in northern Norway, Øvre Pasvik region, positioned at the Europe’s northernmost treeline. Specifically, we aimed to assess whether the temperature sensitivity of two co-existing woody plant forms at the northern treeline are coherent and stable over time. We developed 385- and 423-year-long tree-ring width chronologies for <em>Pinus</em> trees and <em>Juniperus</em> shrubs, respectively. For both species we analysed their relationships with instrumental climate data: air temperature, precipitation and Standardized Precipitation-Evapotranspiration Index (SPEI, scale =3) for the period 1901–2022. We revealed that <em>Pinus</em> trees maintained strong and stable correlation with July temperatures (r = 0.56), while <em>Juniperus</em> shrubs exhibited weaker July temperature signal (r = 0.35) that declined and became largely non-significant after the 1970s. While increased drought stress is often suggested as a cause for temperature signal loss in high latitudes, this does not appear to be the case in Øvre Pasvik, as correlations between <em>Juniperus</em> shrubs and SPEI are generally weak or negative for the recent period. Additionally, growth of <em>Pinus</em> trees was positively related to May precipitation, while <em>Juniperus</em> shrubs exhibited negative relationship with May precipitation. Our findings highlight reliability of <em>Pinus</em> trees chronology as a temperature proxy at the northernmost treeline. We also underscore the necessity of high-resolution microtomy and microscopy techniques for accurate ring detection in <em>Juniperus</em> shrubs as standard method minimizing the risk of misdating or discarding ecologically valuable material.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"95 ","pages":"Article 126470"},"PeriodicalIF":2.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977085","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}

{"title":"Changing stand densities influence xylem and phloem formation in Norway spruce plantations","authors":"Kyriaki Giagli ,&nbsp;Hanuš Vavrčík ,&nbsp;Dimitrios Tsalagkas ,&nbsp;Jan Leugner ,&nbsp;Jana Hacurová ,&nbsp;Vladimír Gryc ,&nbsp;Jakub Černý","doi":"10.1016/j.dendro.2025.126467","DOIUrl":"10.1016/j.dendro.2025.126467","url":null,"abstract":"<div><div>An investigation over three years (2021–2023) at the Křivina site in the Czech Republic studied how pre-commercial thinning (PCT) affects Norway spruce growth, focusing on xylogenesis and phloemogenesis in the stem across three research plots. In February 2020, PCT reduced stand density to 2062 trees per hectare (KRst; mild thinning), in line with Norway spruce standard practices in the country and to 1365 trees per hectare (KRex; heavy thinning) as an experimental approach to heavy PCT. KRco, which underwent no silvicultural intervention, served as the control with a density of 3519 trees per hectare. The number of cells and the maximum weekly growth rate indicated a pronounced growth trend following the heavy thinning in the KRex, which was significantly different from the untreated KRco, particularly in 2021. The heavily thinned plot, KRex, demonstrated the highest production of sieve cells across all the studied years, predominantly affecting the late phloem. In contrast, the early phloem and axial parenchyma cells consistently showed a trend across all plots and years. Throughout all treatment regimes, the three plots consistently demonstrated a declining trend in tracheid production over the three analysed years. No influence of the PCT on the morphology of tracheids was observed.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"95 ","pages":"Article 126467"},"PeriodicalIF":2.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884304","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}

{"title":"Investigating the age of the door of the King’s Chapel in Tallinn Dome","authors":"Alar Läänelaid ,&nbsp;Juhan Kilumets ,&nbsp;Andres Uueni ,&nbsp;Paul Borghaerts","doi":"10.1016/j.dendro.2025.126462","DOIUrl":"10.1016/j.dendro.2025.126462","url":null,"abstract":"<div><div>An ancient door in the St. Mary's Cathedral in Tallinn underwent dendrochronological analysis. The door's construction consists of two vertical pine planks connected by two inclined bars. The outer side of the door is covered with horizontal oak planks and bordered on one edge with a vertical bar. The analysis yielded two different dates: the pine plank was dated to 1291 AD <em>terminus post quem</em> and the oak planks to 1376 AD tpq. No sapwood edge was identified on the oak planks, but up to six sapwood rings were preserved on some oak boards. The resulting chronological discrepancy necessitated the investigation of a possible secondary use of the door or a simultaneous construction. According to several features of the joinery, this is a door whose planks were made at the same time. The door was most likely made between 1378 and 1394 AD. This item is probably the oldest surviving door in Estonia.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"95 ","pages":"Article 126462"},"PeriodicalIF":2.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145737502","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}

{"title":"Progress in Asian Dendrochronology: A special issue overview","authors":"Kambiz Pourtahmasi,&nbsp;Qiufang Cai,&nbsp;Ouya Fang","doi":"10.1016/j.dendro.2026.126483","DOIUrl":"10.1016/j.dendro.2026.126483","url":null,"abstract":"","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"95 ","pages":"Article 126483"},"PeriodicalIF":2.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147394858","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}

{"title":"Linking intra-annual density fluctuations to early-warning indicators of drought-driven tree mortality in the NE Iberian Peninsula","authors":"I. Marbà Vologjanin ,&nbsp;Irena Sochová ,&nbsp;Paula Cara-Abad ,&nbsp;Elisabet Martínez-Sancho","doi":"10.1016/j.dendro.2026.126471","DOIUrl":"10.1016/j.dendro.2026.126471","url":null,"abstract":"<div><div>In recent decades, drought-driven tree mortality has become widespread, particularly in Mediterranean ecosystems, where prolonged drought accelerates forest-to-shrubland transitions. Detecting early-warning signals of tree decline is therefore essential for anticipating ecosystem changes and guiding conservation. We investigated a massive mortality event that occured in 2023 in an Aleppo pine population (<em>Pinus halepensis</em>) at the Garraf Massif (NE Iberian Peninsula). We compared a set of previously proposed growth-related parameters (long-term growth trends, growth series autocorrelation, growth variability and climatic growth sensitivity) as potential early-warning signals of tree die-off between living and dead trees. We also introduced new parameters: frequency of intra-annual density fluctuations (IADFs), and IADF climatic sensitivity. Our results indicate that early-warning signals based on long-term growth trends, autocorrelation, growth variability, and climatic sensitivity performed poorly, with no significant differences between dead and living trees. Precipitation was the main climatic driver for trees of both statuses. In contrast, IADFs emerged as effective early-warning indicators: living trees exhibited significantly higher IADF frequency and greater climatic sensitivity. This suggests that living individuals had a higher capacity to plastically adjust to environmental conditions, reflected in a bimodal growth pattern. Overall, our findings highlight IADFs as growth-based early-warning signals of tree mortality, mechanistically linked to the individual ability to withstand unfavorable climatic conditions. These results provide new insights into the rapid shifts occurring in the Mediterranean forest–shrubland ecotone and offer a valuable tool for anticipating drought-driven tree decline.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"95 ","pages":"Article 126471"},"PeriodicalIF":2.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977087","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}

{"title":"Warming drives non-stationary climate-growth relationships and differential drought sensitivity in Mediterranean pines","authors":"João Campôa ,&nbsp;Teresa Calvão ,&nbsp;Joshua J. Puhlick ,&nbsp;Carla S. Pimentel","doi":"10.1016/j.dendro.2026.126469","DOIUrl":"10.1016/j.dendro.2026.126469","url":null,"abstract":"<div><div>In Mediterranean forests, increasing tree susceptibility to drought has often been attributed to local site conditions and species-specific adaptations to water scarcity. Climate-growth relationship has been assumed to be stationary; however, warming can induce non-stationary relationships. This study aimed to evaluate whether recent warming has induced non-stationary growth responses in Mediterranean forests. For these two Mediterranean pine species with different life-history traits (<em>Pinus pinea</em> and <em>Pinus pinaster</em>), were studied using dendrochronological data, in two areas of Portugal with distinct Mediterranean Type climate (Csb - warm-summer Mediterranean, and Csa - hot-summer Mediterranean). We evaluated average tree ring indices for two periods, before and after the 1970s onset of the warming trend, to determine potential changes in growth sensitivity to moisture availability. Our results reveal that increased warming after the 1970s induced contrasting species-specific responses. Fast growing <em>P. pinaster</em> had enhanced growth during favorable conditions at mesic sites. In contrast, the more xeric <em>P. pinea</em> reduced growth under warming, indicating a change in consideration of these two species capacities to cope with future climatic conditions. We have not found an increase in sensitivity to water availability during warming, therefore, future drought recovery for both species will largely depend on local declines in water availability. These findings highlight the importance of accounting for non-stationary climate–growth relationships when predicting species responses to climate change. Understanding the mechanisms driving tree resilience is critical for developing more accurate and effective forest management strategies under future scenarios of warming and more frequent and severe droughts.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"95 ","pages":"Article 126469"},"PeriodicalIF":2.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924915","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}

{"title":"Refined minimum ages for hollow yew-trees based on dendrochronological analysis","authors":"Toby R. Hindson ,&nbsp;Andy K. Moir","doi":"10.1016/j.dendro.2025.126465","DOIUrl":"10.1016/j.dendro.2025.126465","url":null,"abstract":"<div><div>For the first time using decayed wood, long precisely dated yew tree chronologies have been established for three southern woodland sites and four individual churchyard trees in England. The earliest annual rings of the decayed wood identifies the minimum ages for a total of 33 cross-matching yew-trees. These sequences have been combined to produce a 470 year-long yew wood chronology, dated to span 1492AD-1961AD, currently the longest modern yew chronology in the world. Nine yew trees yielded annual rings dated over 400 years old. Due to the trees’ hollow nature the central pith could still not be identified in any sampled yews, and so minimum ages are produced, although some tree ages were further refined with ring-counted wood. Despite its small girth, the oldest dated sequence from a yew in Ropley Churchyard in Hampshire extends to 1492AD, with additional ring-counts of central wood from this tree refining the minimum age back to the year 1398AD. This research highlights the use of redundant decayed yew wood to produce longer chronologies than is possible from cores or lateral sections of sound-wood.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"95 ","pages":"Article 126465"},"PeriodicalIF":2.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884303","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}

{"title":"Grapevine-chronology: Annual growth ring analysis for climate adaptation and vineyard management – A review","authors":"Federico Roig-Puscama ,&nbsp;Fidel A. Roig","doi":"10.1016/j.dendro.2026.126481","DOIUrl":"10.1016/j.dendro.2026.126481","url":null,"abstract":"<div><div>The study of annual growth rings in <em>Vitis vinifera</em> has recently emerged as a promising framework to explore long-term vine responses to climate and management. This review synthesizes current knowledge on grapevine wood anatomy, xylem functionality, and isotopic signatures, highlighting their role as archives of environmental and agronomic information. Grapevine growth rings provide high-resolution records of climate signals, including drought and heat stress, and reveal cultivar-specific hydraulic strategies shaped by soil conditions and management practices. Stable isotope analyses further complement anatomical chronologies by integrating physiological responses to water availability. Together, these approaches offer valuable insights into the structural memory and plasticity of grapevine xylem, with direct implications for vineyard sustainability and climate adaptation. We also examine the impact of viticultural practices such as irrigation, pruning, grafting, and rootstock choice on xylem architecture, emphasizing how agronomic decisions leave long-lasting anatomical imprints in wood. Finally, we outline future research perspectives, including the integration of dendrochronological, isotopic, and high-resolution imaging techniques, to fully exploit grapevine chronologies as tools for understanding vine resilience and for guiding varietal selection, breeding, and precision viticulture under changing environmental conditions.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"95 ","pages":"Article 126481"},"PeriodicalIF":2.3,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187358","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}