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Tree-ring oxygen isotope cross-dating between southeastern China and central Japan
IF 2.7 3区 农林科学
Dendrochronologia Pub Date : 2025-02-27 DOI: 10.1016/j.dendro.2025.126319
Shiyuan Shi , Jiangfeng Shi , Takeshi Nakatsuka , Masaki Sano , Zhen Li , Jiaping Shu , Xiaoying Wang , Jianqiu Huang , Jinbao Li , Huayu Lu
{"title":"Tree-ring oxygen isotope cross-dating between southeastern China and central Japan","authors":"Shiyuan Shi ,&nbsp;Jiangfeng Shi ,&nbsp;Takeshi Nakatsuka ,&nbsp;Masaki Sano ,&nbsp;Zhen Li ,&nbsp;Jiaping Shu ,&nbsp;Xiaoying Wang ,&nbsp;Jianqiu Huang ,&nbsp;Jinbao Li ,&nbsp;Huayu Lu","doi":"10.1016/j.dendro.2025.126319","DOIUrl":"10.1016/j.dendro.2025.126319","url":null,"abstract":"<div><div>Long tree-ring chronologies applicable for archaeological dating are extremely rare in southeastern China, limiting dendroarchaeological research in this monsoon region. A large number of archaeological woods have been unearthed in this region, and the application of tree-ring oxygen isotope (δ<sup>18</sup>O) allows cross-dating of less climatically stressed trees of different species from distant sites, offering a potential to change the standstill. In this study, we tested tree-ring δ<sup>18</sup>O cross-dating of modern and archaeological samples from southeastern China against the central Japan master tree-ring chronology spanning the past 2872 years. Dating experiments on living-tree chronologies of known ages indicate that it is feasible to pinpoint their correct calendar dates using the central Japan master chronology. Cross-dating based on tree-ring width was successfully conducted on 46 <em>Cunninghamia lanceolata</em> samples excavated from Han Dynasty tombs in the Yangzhou area, southeastern China, and the sample with the most recent ring was selected to build a floating tree-ring δ<sup>18</sup>O series. The floating series was cross-dated with the central Japan master chronology to produce an unambiguous end date of 2 BCE, which is supported by climate records in historical literature. The success of δ<sup>18</sup>O dating is dependent on common signals at both high and low frequencies originating from multi-scale climate coherence between the two regions, and thus long sample series containing decadal to multidecadal variations are necessary. Our study shows a feasibility of δ<sup>18</sup>O-based dendroarchaeology in southeastern China.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"91 ","pages":"Article 126319"},"PeriodicalIF":2.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580107","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
Blue intensity, tree-ring dimensions, earlywood vessels and flood rings in floodplain Fraxinus pennsylvanica trees, central Canada
IF 2.7 3区 农林科学
Dendrochronologia Pub Date : 2025-02-27 DOI: 10.1016/j.dendro.2025.126311
Jacques C. Tardif , Ryszard J. Kaczka , France Conciatori
{"title":"Blue intensity, tree-ring dimensions, earlywood vessels and flood rings in floodplain Fraxinus pennsylvanica trees, central Canada","authors":"Jacques C. Tardif ,&nbsp;Ryszard J. Kaczka ,&nbsp;France Conciatori","doi":"10.1016/j.dendro.2025.126311","DOIUrl":"10.1016/j.dendro.2025.126311","url":null,"abstract":"<div><div>Flood rings have been identified in numerous floodplain ring-porous tree species of the genus <em>Fraxinus</em> and <em>Quercus</em>. They are generally characterized by an earlywood having more numerous vessels with smaller cross-sectional area compared to “normal” tree ring. In recent years, blue intensity (BI) has developed as a surrogate method to determine tree-ring density. The method, so far, has been restricted to coniferous species. No studies have assessed the utility of BI in floodplain ring-porous species and its association, among others, with earlywood vessel features and hydrological conditions. In this study, twenty green ash (<em>Fraxinus pennsylvanica</em> Marsh.) trees were analysed. Flood rings were identified with both cross-sectional area of all earlywood vessels ≥ 1000 µm<sup>2</sup> and BI measured. Results indicated strong associations among given BI, tree-ring dimension, earlywood vessel and flood-ring chronologies. For instance, both earlywood BI (especially EW10BI) and Delta BI (DBI) showed significant inversed associations with earlywood porosity and with flood-ring abundance. These BI parameters were also strongly associated with spring discharge. In green ash, tree rings formed in years leading to flood-ring formation were characterized by increased earlywood density (higher blue intensity caused by an alteration in size and arrangement of earlywood vessels) and, to a lesser extent, by reduced latewood density. The BI features derived from the earlywood and the entire tree ring both prove to effectively complement visual identification of flood ring. Blue intensity in ring-porous species may prove useful in dendrohydrological reconstructions and also in wood sciences, i.e., when estimating tree-ring density is desired. In regards to ring-porous species, further work is warranted comparing software differences in determining BI, evaluating BI signal in other species and from various hydrological regimes.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"91 ","pages":"Article 126311"},"PeriodicalIF":2.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611182","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}
引用次数: 0
Should I stay or should I go? Meteorological effects on radial growth in introduced lodgepole pine provenances
IF 2.7 3区 农林科学
Dendrochronologia Pub Date : 2025-02-27 DOI: 10.1016/j.dendro.2025.126308
Diāna Jansone , Roberts Matisons , Didzis Elferts , Kalev Jõgiste , Baiba Jansone , Inga Straupe , Āris Jansons
{"title":"Should I stay or should I go? Meteorological effects on radial growth in introduced lodgepole pine provenances","authors":"Diāna Jansone ,&nbsp;Roberts Matisons ,&nbsp;Didzis Elferts ,&nbsp;Kalev Jõgiste ,&nbsp;Baiba Jansone ,&nbsp;Inga Straupe ,&nbsp;Āris Jansons","doi":"10.1016/j.dendro.2025.126308","DOIUrl":"10.1016/j.dendro.2025.126308","url":null,"abstract":"<div><div>Climate change poses significant challenges to tree survival and productivity, necessitating the introduction of non-native species to enhance forest resilience. This study examines the sensitivity of different lodgepole pine (<em>Pinus contorta</em>) provenances to meteorological conditions in Latvia compared to native Scots pine (<em>Pinus sylvestris</em>). The study was carried out in lodgepole pine provenance trials at two locations in Latvia. It analyzed 12 provenances of <em>Pinus contorta</em> from Canada, one <em>Pinus contorta</em> grown in Latvia, and one <em>Pinus sylvestris</em> grown in Latvia. The age of the experimental trials ranged from 29 to 38 years. Data analysis involved climate sensitivity analysis, including cluster analysis, correlation analysis and linear-mixed effects model, to examine the relationship between radial growth patterns and meteorological variables. Complex meteorological influences on TRW were revealed, identifying eight significant predictors primarily associated with spring and summer conditions. The most substantial effects were linked to climatic water balance in spring, winter temperatures, and summer precipitation. Site conditions significantly influenced growth more than genetic effect between provenances. The Lacobie Creek provenance, originating from the central part of the natural distribution area demonstrated lower sensitivity to climatic variables and was the most productive, indicating a lower risk from climate-related challenges and promising future growth potential. In general, the variation in weather sensitivity across provenances was similar. Testing under local site conditions is essential to evaluate the potential for introducing non-native provenances, as their performance compared to native species can vary depending on the specific environmental conditions.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"91 ","pages":"Article 126308"},"PeriodicalIF":2.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562153","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
Long-term tree growth-climate relationships of Fagus orientalis Lipsky at high-elevation forest edges in the Alborz Mountains, northern Iran
IF 2.7 3区 农林科学
Dendrochronologia Pub Date : 2025-02-22 DOI: 10.1016/j.dendro.2025.126306
Halime Moradi, Niels Schwab, Udo Schickhoff
{"title":"Long-term tree growth-climate relationships of Fagus orientalis Lipsky at high-elevation forest edges in the Alborz Mountains, northern Iran","authors":"Halime Moradi,&nbsp;Niels Schwab,&nbsp;Udo Schickhoff","doi":"10.1016/j.dendro.2025.126306","DOIUrl":"10.1016/j.dendro.2025.126306","url":null,"abstract":"<div><div>Rapid warming at high elevations may increase the sensitivity of tree growth to climatic signals. While several studies have examined tree growth in the Hyrcanian forests of the Alborz Mountains (Iran), the impact of climatic factors on <em>Fagus orientalis</em> Lipsky at its upper growth limit remains unclear. This study investigates the relationship between the annual tree-ring width of <em>Fagus orientalis</em> and climate over more than a century at its elevational growth limit. We constructed two tree-ring width chronologies from cores collected at elevations of 2400–2550 m a.s.l. at two contrasting sites in the Hyrcanian Forest, which differ in soil physical conditions. We correlated the tree-ring data with monthly mean temperature, precipitation sums, and the six-month standardized precipitation-evapotranspiration index. Our results show that moisture deficit, particularly during the growing season (June to November), is a critical factor affecting growth. Precipitation has a more pronounced influence on growth at high elevations compared to lower elevations in the Hyrcanian Forests, suggesting that <em>Fagus orientalis</em> is more dependent on precipitation and soil moisture during summer and autumn drought stress. The distance from the Caspian Sea and the constellation of local climatic factors such as low precipitation and high irradiation are likely to contribute to reduced moisture availability at higher elevations. Divergent results from contrasting sites highlight the important role of soil physical conditions in shaping growth-climate relationships. This study provides valuable insights into the radial growth-climate relationships of <em>Fagus orientalis</em> at elevated sites, and enhances our understanding of the sensitivity of the species in response to future climate change.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"91 ","pages":"Article 126306"},"PeriodicalIF":2.7,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511821","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}
引用次数: 0
Changing climate response of Northeast Ohio white oaks, USA: Is it tree age or site age?
IF 2.7 3区 农林科学
Dendrochronologia Pub Date : 2025-02-19 DOI: 10.1016/j.dendro.2025.126307
Gregory Wiles, Nicholas Wiesenberg, Meagen Pollock, Caitlyn Denes, Tyrell Cooper, Desiree Smith, Melita Wiles
{"title":"Changing climate response of Northeast Ohio white oaks, USA: Is it tree age or site age?","authors":"Gregory Wiles,&nbsp;Nicholas Wiesenberg,&nbsp;Meagen Pollock,&nbsp;Caitlyn Denes,&nbsp;Tyrell Cooper,&nbsp;Desiree Smith,&nbsp;Melita Wiles","doi":"10.1016/j.dendro.2025.126307","DOIUrl":"10.1016/j.dendro.2025.126307","url":null,"abstract":"<div><div>White oak, a keystone species of the broadleaf forests of the North American Midwest, has a significant role in providing ecosystems services in a region experiencing warming and increasingly pluvial conditions. A one-hundred-year-old white oak stand in an arboretum, along with two second growth (∼200-year-old) stands from Northeast Ohio have consistently responded positively to summer (June-July) precipitation over the past century, whereas four nearby old growth sites (&gt;300 years old) have lost their moisture sensitivity since about the mid 1970s. This “fading drought signal,” which has been previously reported, appears to be more a result of the legacy of land use at the individual sites rather than tree age. The younger oak stands and their relative sustained drought sensitivity is also related to their history of recently attaining the canopy and similar responses associated with intervals of selective logging. All sites are strongly, negatively correlated with summer (June-July) maximum monthly temperatures and in general the maximum temperatures are negatively correlated with precipitation in those months. Future warming in the Midwest is projected to see increases in spring precipitation and likely decreases in late summer precipitation linked to a northward migration of the North American Westerly Jet. This projected decrease in summer precipitation coupled with an increase in maximum and minimum summer temperatures in the coming decades would increase the moisture stress on these trees. Our examination of these varying climate responses with respect to site characteristics and forest age can help future assessments of tree health and the forest’s ability to sequester carbon, as well as facilitate efforts to reconstruct climate by using a range of tree sites for intervals when sensitivity in old growth sites is lost.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"91 ","pages":"Article 126307"},"PeriodicalIF":2.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535351","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-growth relationships and paleoclimate potential of Austrocedrus chilensis revisited by extending its tree-ring network in Argentina
IF 2.7 3区 农林科学
Dendrochronologia Pub Date : 2025-02-18 DOI: 10.1016/j.dendro.2025.126309
Eugenia Marcotti , Ricardo Villalba , Milagros Rodriguez-Caton , Ana M. Srur , José A. Boninsegna , Mariano M. Amoroso
{"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}
引用次数: 0
Intra-annual xylem formation dynamics of Castanopsis hystrix and its response to climate in southern Guangxi, China
IF 2.7 3区 农林科学
Dendrochronologia Pub Date : 2025-02-15 DOI: 10.1016/j.dendro.2025.126303
Wendi Zhao , Zhangjunjie Xu , Tonghuo Wu , Jiayin Li , Lu Zheng , Shaowei Jiang , Xiali Guo
{"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}
引用次数: 0
Evaluating the influence of high-resolution image capture on the signal strength of blue intensity and quantitative wood anatomy metrics from whitebark pine
IF 2.7 3区 农林科学
Dendrochronologia Pub Date : 2025-02-11 DOI: 10.1016/j.dendro.2025.126305
Savannah A. Collins-Key , Maegen L. Rochner , Karen E. King , April L. Kaiser , Grant L. Harley , Zachary Foley , Matthew F. Bekker , Georg von Arx
{"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><sup>2</sup> = 0.27 for Epson and <em>R</em><sup>2</sup> = 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}
引用次数: 0
A Norway spruce Blue Intensity summer temperature reconstruction from the Central Scandinavian Mountains
IF 2.7 3区 农林科学
Dendrochronologia Pub Date : 2025-02-11 DOI: 10.1016/j.dendro.2025.126304
Fredrik Karlsson, Mauricio Fuentes, Hans W. Linderholm
{"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}
引用次数: 0
Future suitability of sweet chestnut (Castanea sativa Mill.) is limited by susceptibility to drought
IF 2.7 3区 农林科学
Dendrochronologia Pub Date : 2025-02-09 DOI: 10.1016/j.dendro.2025.126299
Konstantin Weise , Marieke van der Maaten-Theunissen , Gregor Seitz , Tobias Keller , Ernst van der Maaten
{"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}
引用次数: 0
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