Dendrochronologia最新文献

{"title":"Climate-growth relationships and paleoclimate potential of Austrocedrus chilensis revisited by extending its tree-ring network in Argentina","authors":"Eugenia Marcotti ,&nbsp;Ricardo Villalba ,&nbsp;Milagros Rodriguez-Caton ,&nbsp;Ana M. Srur ,&nbsp;José A. Boninsegna ,&nbsp;Mariano M. Amoroso","doi":"10.1016/j.dendro.2025.126309","DOIUrl":"10.1016/j.dendro.2025.126309","url":null,"abstract":"<div><div>The climatic variations observed in recent decades in Patagonia have affected the dynamics of the Andean forests. In this study, new and existing <em>Austrocedrus chilensis</em> chronologies were subjected to analysis in 28 sites representative of the species' longitudinal and latitudinal distribution in Argentina. This study covers the western and humid distribution of the species in Argentina, which have been little studied to date. The climate data set comprised precipitation and temperature data from 21 meteorological stations and three global temperature series. The results demonstrate the presence of a robust common climate signal among the regional (REGIONAL) and sub-regional (XERNOR and HUMSUR) chronologies. The growth of <em>A. chilensis</em> trees from regional and sub-regional chronologies is primarily constrained by elevated temperatures and reduced precipitation during the late spring and summer months of the current and late winter of the previous growing seasons. The relationships between <em>A. chilensis</em> growth and atmospheric circulation patterns (El Niño-Southern Oscillation, Antarctic Oscillation, and Pacific Decadal Oscillation) suggest that the species may be able to provide information on the past influence of climatic forcings throughout northern Patagonia. Our findings indicate that future warming is likely to have a negative impact on the growth of <em>A. chilensis</em> across a significant portion of its current distribution in Argentina.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126309"},"PeriodicalIF":2.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474784","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":"Intra-annual xylem formation dynamics of Castanopsis hystrix and its response to climate in southern Guangxi, China","authors":"Wendi Zhao ,&nbsp;Zhangjunjie Xu ,&nbsp;Tonghuo Wu ,&nbsp;Jiayin Li ,&nbsp;Lu Zheng ,&nbsp;Shaowei Jiang ,&nbsp;Xiali Guo","doi":"10.1016/j.dendro.2025.126303","DOIUrl":"10.1016/j.dendro.2025.126303","url":null,"abstract":"<div><div>To investigate the intra-annual xylem formation dynamics of <em>Castanopsis hystrix</em> and its response to climate factors in a monoculture plantation in Pingxiang City, southern Guangxi, China, this study monitored the xylem formation dynamics and seasonal vessel diameter of nine trees over two growing seasons (2022 and 2023). We used linear mixed model to examine correlations between xylem growth rates and climatic variables. We found that 90 % of xylem cells production of <em>C. hystrix</em> was concentrated during March to October in 2022 and 2023. The xylem growth rate exhibited significant positive correlations with temperature and photosynthetically active radiation recorded 7, 10, and 15 days prior to sampling date and sunshine duration on the sampling date. Specifically, the highest mean vessel diameter at the early phase of growing season corresponded to the peak of xylem growth rate in two years, exemplifying the coordinated mechanism underlying the regulation of tree growth and wood anatomy. We highlighted the critical climatic factors during the growing season and illustrated the correlation between xylem growth and wood anatomy, which offered valuable suggestions for the forest management especially under climate change.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126303"},"PeriodicalIF":2.7,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444760","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":"Evaluating the influence of high-resolution image capture on the signal strength of blue intensity and quantitative wood anatomy metrics from whitebark pine","authors":"Savannah A. Collins-Key ,&nbsp;Maegen L. Rochner ,&nbsp;Karen E. King ,&nbsp;April L. Kaiser ,&nbsp;Grant L. Harley ,&nbsp;Zachary Foley ,&nbsp;Matthew F. Bekker ,&nbsp;Georg von Arx","doi":"10.1016/j.dendro.2025.126305","DOIUrl":"10.1016/j.dendro.2025.126305","url":null,"abstract":"<div><div>Ring-density parameters, such as maximum latewood density (MXD), blue intensity (BI), and quantitative wood anatomy (QWA), can be highly sensitive to summer temperatures. While MXD is traditionally obtained through resource-intensive X-ray densitometry, advancements in high-resolution image processing offer alternative methods for measuring density metrics. This study evaluates latewood BI (LWBI) chronologies developed from two image resolutions (Epson: 2400 dpi and Skippy: 6700 dpi) against QWA-derived MXD (aMXD) for whitebark pine (<em>Pinus albicaulis</em>, PIAL) in the Greater Yellowstone Ecoregion, USA. LWBI metrics exhibited robust linear relationships with June–August (JJA) maximum temperatures (i.e., <em>R</em>² = 0.27 for Epson and <em>R</em>² = 0.31 for Skippy; <em>p</em> &lt; 0.01), but differences between image resolutions were not statistically significant. Spatial relationships were robust for LWBI, though the relationships with Epson and Skippy were similar. Additionally, Skippy may have captured a longer growing season signal (June–September) compared with Epson, while Epson improved with selections of a larger fraction of darkest pixels (e.g., 30–50 %). Our findings also indicate that% darkest pixel selections affect outcomes differently when measuring LWBI from Epson and Skippy images. This pilot study highlights the potential of LWBI as a faster alternative to QWA, with both metrics demonstrating significant climate sensitivity in PIAL. By successfully capturing strong temperature signals from PIAL, an understudied and ecologically critical species, this research supports the fusion of dendroclimatological applications to produce a more robust climate signal, as well as the development of millennial-length climate reconstructions in high-elevation ecosystems of North America.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126305"},"PeriodicalIF":2.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394739","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":"A Norway spruce Blue Intensity summer temperature reconstruction from the Central Scandinavian Mountains","authors":"Fredrik Karlsson,&nbsp;Mauricio Fuentes,&nbsp;Hans W. Linderholm","doi":"10.1016/j.dendro.2025.126304","DOIUrl":"10.1016/j.dendro.2025.126304","url":null,"abstract":"<div><div>Fennoscandia is a favourable region for dendroclimatological research. Yet, most of the dendroclimatological research in Scandinavia has focused on Scots pine (<em>Pinus sylvestris</em> L.) while fewer studies have focused on Norway spruce (<em>Picea abies</em> L.), despite its wide distribution. In the present study we explore the potential of increasing the fidelity of the climate information from Norway spruce tree-ring data by investigating Late Wood Blue Intensity (LWBI) measurements from trees sampled at the elevational tree line in the Central Scandinavian Mountains. We present -to the knowledge of the authors- the first LWBI chronology and summer temperature (June through August) reconstruction based on LWBI measurements from the species, which covers the period 1750–2020. The LWBI chronology has a substantially stronger temperature signal than its corresponding tree-ring width (TRW) chronology, and displays a good spatial representation across the Nordic countries. The temperature reconstruction follows the general patterns of the temperature history previously reported for the central Scandinavian mountains. This suggests that Norway spruce and the LWBI technique are viable for studying past climate history and evaluating ongoing changes. The introduction of another species in dendroclimatic reconstructions in the area could yield more precise insights of regional climate variations, as different species exhibit varying sensitivities to climatic conditions. However, while Norway spruce can be preserved for a long time under favourable conditions, the use of Norway spruce subfossil wood in LWBI research is untested. Therefore, further research is required to develop longer Norway spruce LWBI chronologies and to fully evaluate the potential of using Norway spruce in dendroclimatic studies.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126304"},"PeriodicalIF":2.7,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Future suitability of sweet chestnut (Castanea sativa Mill.) is limited by susceptibility to drought","authors":"Konstantin Weise ,&nbsp;Marieke van der Maaten-Theunissen ,&nbsp;Gregor Seitz ,&nbsp;Tobias Keller ,&nbsp;Ernst van der Maaten","doi":"10.1016/j.dendro.2025.126299","DOIUrl":"10.1016/j.dendro.2025.126299","url":null,"abstract":"<div><div>Global warming and associated droughts have revealed the vulnerability of many tree species throughout the world. The introduction of climate-resilient tree species is therefore a recurring topic in adaptive forest management. In this context, sweet chestnut (<em>Castanea sativa</em> Mill.) is receiving renewed attention due to its native distribution in the Mediterranean, which climatically corresponds to future climate projections for Central Europe. Despite its long history of cultivation throughout Europe and its significant potential in forestry, studies on the climate sensitivity of sweet chestnut remain scarce, particularly in its northern distribution area. By comparing growth responses based on tree-ring data along a gradient of soil water availability in southwestern Germany, this study contributes to the evaluation of the climate resilience of sweet chestnut. More specifically, sweet chestnut stands of low, medium and high water availability were compared regarding long-term growth trends, climate sensitivity of tree growth and growth responses in pointer years. While trends were weak along the studied gradient, sweet chestnut was generally found to be sensitive to spring and early summer drought. At four out of six sites long-term growth decline also indicate stress. Splitting the observation period into an early (1976–1999) and late (2000–2022) period revealed a decrease in climate sensitivity, demonstrating non-stationarity of climate-growth relationships. Growth responses in drought-related pointer years were similar along the soil water availability gradient, and revealed low resistance and high resilience. Our findings indicate that sweet chestnut is not per se a climate-resilient species. Given the importance of early summer water availability for chestnut growth, we recommend a careful site selection. Nevertheless, sweet chestnut seems a promising option for future forest management on better water-supplied sites.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126299"},"PeriodicalIF":2.7,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Confocal fluorescence microscopy reveals subtle lignification variations in a Scots pine blue ring","authors":"Ciara Greaves ,&nbsp;Ignacy Bonter ,&nbsp;Alan Crivellaro ,&nbsp;Clive Oppenheimer ,&nbsp;Harriet Kempson ,&nbsp;Aleksei Potapov ,&nbsp;Sandra Metslaid ,&nbsp;Maris Hordo ,&nbsp;Regino Kask ,&nbsp;Ahto Kangur ,&nbsp;Simon Hawkins ,&nbsp;Corentin Spriet ,&nbsp;Andrew D. Friend ,&nbsp;Jim Haseloff ,&nbsp;Alma Piermattei","doi":"10.1016/j.dendro.2025.126301","DOIUrl":"10.1016/j.dendro.2025.126301","url":null,"abstract":"<div><div>Blue rings (BRs) are anomalies in tree rings revealed by a double staining technique. They have been thought to reflect reduced cell wall lignification during ephemeral end-of-growing-season cold periods, often following significant volcanic eruptions. BRs have been distinguished visually according to qualitative descriptions and are considered a promising proxy for cold extremes at the intra-seasonal scale. However, reduced cell wall lignin content has never been successfully measured in BRs, limiting understanding of their relationship with thermal (or other) conditions. Further, difference in lignin content between BRs and ‘standard’ rings has not been confirmed independently of the double staining method. Here, using confocal microscopy of samples of Scots pine, we show that BRs are indeed associated with marked reduction of lignin in latewood cells. We also identify subtle variations in lignin across rings that are not well resolved by the double staining method. We draw on these findings to propose a new framework to visualise and measure lignin changes in tree rings. Our findings emphasise the potential of BRs as a paleoproxy of intraseasonal climate variability.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126301"},"PeriodicalIF":2.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent declines in radial growth and wood density characterize dieback in European beech and pedunculate oak","authors":"Ester González de Andrés ,&nbsp;Antonio Gazol ,&nbsp;Michele Colangelo ,&nbsp;Cristina Valeriano ,&nbsp;Alejandro Cantero ,&nbsp;J. Julio Camarero","doi":"10.1016/j.dendro.2025.126300","DOIUrl":"10.1016/j.dendro.2025.126300","url":null,"abstract":"<div><div>In the last decades, climate change has boosted the occurrence of severe dry and warm episodes that impair the functioning of forests. Elevated evaporative demand, i.e., high vapour pressure deficit, during the growing season limits the ability of trees to fix carbon and growth thus increasing the likelihood of tree dieback and mortality. While climate change impacts on tree growth are widely documented, we still lack a clear understanding on how wood density responds to temperature increases, particularly for hardwood tree species near their warm distribution edges. We evaluated the annual growth and wood density variability of European beech (<em>Fagus sylvatica</em> L.) and pedunculate oak (<em>Quercus robur</em> L.) in two forests suffering tree mortality in northern Spain. We used dendrochronology to quantify tree-ring-width and basal area increment (BAI) and densitometry analyses to obtain annual wood density profiles of non-declining (ND) and declining (D) trees. In addition, resistography was employed to estimate resistance drilling density. We found a higher BAI of ND as compared with D trees in the two species, since the severe 2012 drought for beech and after the 1960s for oak. By contrast, differences between vigour classes in wood density were only evident in oak during the last decade, when D trees showed a decreasing trend. Beech growth was enhanced by wet-cool summer conditions, whereas density increased in response to dry-warm spring conditions and cool temperatures during the previous autumn. Oak growth was enhanced by dry-warm conditions in the prior winter and in the summer of the year of growth. High minimum temperatures during the previous autumn, spring and summer increased wood density in ND oak trees, while high precipitation during spring reduced wood density in D trees. We found that resistance drilling profiles did not differ between vigour classes in beech, but D oak trees showed lower resistance to penetration in the sapwood than ND trees, consistent with densitometry profiles. Our results indicate that radial growth data have better capacity to differentiate declining and healthy trees than density and resistograph profiles in European beech and pedunculate oak.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126300"},"PeriodicalIF":2.7,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143378184","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":"Drought resilience of three coniferous species from Belgian arboreta highlights them as promising alternatives for future forests in Western Europe","authors":"Morgane Dendoncker ,&nbsp;Camille Guisset ,&nbsp;Mathieu Jonard ,&nbsp;Alexandra Delente ,&nbsp;Quentin Ponette ,&nbsp;Caroline Vincke","doi":"10.1016/j.dendro.2024.126282","DOIUrl":"10.1016/j.dendro.2024.126282","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Searching for drought tolerant species is one of the adaptative management measures that could be implemented to improve forest resilience in the context of more intense and frequent droughts brought be climate change. Western European forests are already suffering from drought-induced tree mortality, in native as well as in well-established non-native species. Novel non-native species (i.e., non-native species that have not yet undergone thorough operational testing or previously been grown at forestry scale) with high drought resistance in their original geographic range could be an alternative. To this end, the ecology and drought response of these species need to be investigated in their area of introduction. We applied a dendroecological approach on trees of &lt;em&gt;Abies nordmanniana&lt;/em&gt; (Steven) Spach (AN), &lt;em&gt;Chamaecyparis lawsoniana&lt;/em&gt; (A.Murray bis) (CL), and &lt;em&gt;Thuja plicata&lt;/em&gt; Donn ex. D.Don. (TP) from Belgian arboreta (Western Europe). First, we identified the main climatic drivers of species radial growth, using Bootstrapped Correlation Coefficients between tree ring indices and climate indicators related to drought, heat, and cold stresses. Second, we assessed the species growth response to exceptional drought events, using resistance, recovery and resilience indices and an integrated index comparing the actual resilience to a theoretical full resilience. We investigated the effects of species and drought timing on these indices using linear mixed models. The radial growth of the three species was negatively influenced by the water deficit during the previous growing season (especially in fall and summer), lower precipitation in the previous October, colder temperatures in late winter-early spring, and lower minimal temperatures in May. TP is the most sensitive species to previous summer conditions as it was negatively affected by the number of days with a mean temperature above 30°C, while AN was the least sensitive species with no significant Bootstrapped Correlation Coefficients for previous summer precipitation and temperatures. AN and TP differed from CL in being negatively affected in spring by higher maximal temperatures versus lower precipitation respectively. The effects of species and drought timing on resistance and recovery were significant. Overall, early and whole growing season droughts had a stronger negative effect than late droughts. AN and CL were more resistant to early and late droughts than TP, while the opposite was observed for recovery. The species showed less pronounced differences in resilience. CL was the species the closest to the theoretical full resilience, followed by AN: these two species appear to be good candidates for improving drought resistance of Western European forests. However, one must not forget that introducing novel species is associated with ecological risks and a thorough assessment of these risks must be carried out before promoting these species in forestry. Future rese","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"89 ","pages":"Article 126282"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165480","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":"A new 621-year Transcarpathian oak tree-ring chronology (Eastern Europe)","authors":"Irena Sochová ,&nbsp;Tomáš Kolář ,&nbsp;Rudolf Brázdil ,&nbsp;Tomáš Kyncl ,&nbsp;Josef Kyncl ,&nbsp;Marián Melo ,&nbsp;Miroslav Trnka ,&nbsp;Mykhailo Bilanych ,&nbsp;Michal Rybníček","doi":"10.1016/j.dendro.2024.126284","DOIUrl":"10.1016/j.dendro.2024.126284","url":null,"abstract":"<div><div>Annually resolved and absolutely dated multi-century to multi-millennium tree-ring width (TRW) chronologies are essential for the precise dating of wooden artefacts and for climate reconstruction or dendro-paleoclimate studies. Although Transcarpathian basin region is largely forested and rich in historic buildings, a long and well-replicated oak TRW chronology has so far been lacking. This paper describes how we developed a new composite chronology, determined the number of sapwood rings and assessed positive and negative pointer years in relation to weather and climate extremes. We took 429 oak TRW measurements of 247 samples from living trees and 182 from historical buildings, gathered within Transcarpathian basin. The new Transcarpathian TRW chronology spans the period from 1400 to 2020 CE. The number of sapwood rings ranged from 6 to 23 within 95 % confidence limits. Our results revealed a total of 38 negative and 41 positive pointer years. While CRU gridded meteorological data indicated significant correlations only for positive extremes and high June–July precipitation, documentary data confirmed the importance of wet summers for positive and dry summers for negative pointer years. The new Transcarpathian oak TRW chronology shows a strong growth coherence and will allow historical and archaeological wood artefacts in the eastern Pannonian Plain to be dated. In addition, the use of the chronology for past climate reconstruction is conditioned by improved replication at the transition from recent and relict samples together with its extension further back.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"89 ","pages":"Article 126284"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165481","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":"Recording chemical changes in an urban environment: A dendrochemical study of Ceiba speciosa (A. St.-Hil.) Ravenna (Malvaceae) in the Atlantic Forest","authors":"Thaís Jorge de Vasconcellos ,&nbsp;Ramon Silva dos Santos ,&nbsp;Marcelino José dos Anjos ,&nbsp;Mário Tomazello-Filho ,&nbsp;Cátia Henriques Callado","doi":"10.1016/j.dendro.2024.126286","DOIUrl":"10.1016/j.dendro.2024.126286","url":null,"abstract":"<div><div>Trees are capable of recording in their wood the environmental conditions they experience, earning them recognition as environmental archives. Dendrochemistry relates wood chemistry to environmental chemistry and internal biological processes that influence the absorption and incorporation of chemical elements into growth rings. We evaluated the annual concentrations of chemical elements fixed in the wood of <em>Ceiba speciosa</em> (A. St.-Hil.) Ravenna (Malvaceae) at two Atlantic Forest locations, representing low and high urbanization, in the city of Rio de Janeiro, Brazil. The samples used had been dated in a previous dendrochronological study and each growth ring was subjected to energy dispersive X-ray fluorescence (EDXRF). Eleven chemical elements were detected in the growth rings of <em>Ceiba speciosa</em> at both study sites. Concentrations varied among evaluated years and between sites, showing a positive relationship between concentrations accumulated in wood and concentrations present in the soil where the plants develop. The levels of potentially toxic elements in the wood increased significantly at the urban site, mainly since the end of the 1980s. The increase in the concentration of potentially toxic chemical elements in the xylem due to urbanization is a process little discussed for tropical species. In this sense, the dendrochemical study of <em>Ceiba speciosa</em> in the city of Rio de Janeiro represents an important historical environmental report for the Atlantic Forest. The present results, combined with those obtained previously in relation to cambial activity and wood anatomy and tree growth rates of wood and trees in urban environments, indicate that <em>Ceiba speciosa</em> has potential as an important biomarker in environmental monitoring studies.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"89 ","pages":"Article 126286"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165483","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}