Dendrochronologia最新文献

{"title":"Common Yew (Taxus baccata) as a climate archive: Reconstructing 200 years of temperature change in Georgia (Caucasus)","authors":"Revaz Kvaratskhelia,&nbsp;Alexander Gavashelishvili","doi":"10.1016/j.dendro.2024.126285","DOIUrl":"10.1016/j.dendro.2024.126285","url":null,"abstract":"<div><div>Encompassing 44 % forest cover across a diverse elevational gradient (sea level to 2500 m asl) and encompassing biomes ranging from semi-arid to temperate rainforests, Georgia, a country within the Caucasus biodiversity hotspot, presents an unexploited opportunity for dendroclimatological research. This study assesses the suitability of Common Yew (<em>Taxus baccata</em>) for dendroclimatic reconstruction in Georgia. We develop the first dendrochronology in Georgia’s Batsara Nature Reserve by obtaining the species' single master chronology, analyzing the relationship between annual tree-ring growth and climate, and reconstructing past climate over the last 445 years. Results indicate that the average wintertime temperature is the most important climatic driver for the formation of the annual rings, with narrower rings corresponding to colder winters and delayed spring onsets. The reconstructed temperature aligns more closely with rural Northern Hemisphere land surface temperature records, suggesting minimal influence from urbanization bias (aka the urban heat island effect). This study demonstrates the suitability of Common Yew for dendrochronology and dendroclimatology in the Caucasus region.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"89 ","pages":"Article 126285"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165482","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":"Oxygen isotope dendrochronology allows dating of historical timbers across a wide geographical region","authors":"Kristof Haneca ,&nbsp;Vincent Debonne ,&nbsp;Darren Davies ,&nbsp;Danny McCarroll ,&nbsp;Neil J. Loader","doi":"10.1016/j.dendro.2024.126283","DOIUrl":"10.1016/j.dendro.2024.126283","url":null,"abstract":"<div><div>We explore the applicability and geographic reach of two northwest European stable oxygen isotope (δ¹⁸O) chronologies for the precision dating of annually resolved δ¹⁸O series developed from late 15th-century oak (<em>Quercus</em> sp.) roof timbers from St. James’ Church in Bruges, Belgium. In doing so this study assesses ring-width dendrochronology and provenance analysis alongside oxygen isotope dendrochronology in Belgium and its surrounding regions. The δ¹⁸O-series of the historical timbers display a high internal coherence, allowing the construction of a mean isotope series (1325–1468 CE). Cross-dating against master chronologies for Central England, U.K. and Fontainebleau, France, provide reliable matches that surpass statistical thresholds and quality control measures, corroborating the dating results obtained from conventional ring-width dating. Oxygen stable isotope dendrochronology emerges as a valuable tool for precise dating of historical timber structures. This pilot study demonstrates the applicability of existing reference chronologies beyond their core regions and underscores its significance in cultural heritage studies. Despite the demanding nature of the technique in terms of time and expertise, the potential benefits warrant continued investment in expanding the temporal and geographic coverage of well-replicated oxygen isotope reference chronologies.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"89 ","pages":"Article 126283"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165023","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":"Concatenating latewood blue intensity and wood anatomical sensitivity in Neotropical montane podocarps: How does sex-related climate trigger tracheid plasticity?","authors":"Ernesto C. Rodríguez-Ramírez ,&nbsp;Teresa Terrazas","doi":"10.1016/j.dendro.2025.126298","DOIUrl":"10.1016/j.dendro.2025.126298","url":null,"abstract":"<div><div>Increased hydric stress may result in a reshaping of tree species distribution in moist environments. Dioecious tree species may be more vulnerable to climate warming if sex-related sensitivity to drought occurs since lower performance of one sex may drive differential stress tolerance and sex-related mortality rates. We assessed sex-related differences in Neotropical montane podocarps (<em>Podocarpus matudae</em> subsp. <em>matudae</em>) Latewood Blue Intensity (LWBI) and tracheid anatomical plasticity, including lumen radial diameter, wall tangential thickness, cell radial diameter, Mork's index, and hydraulic efficiency and safety. We hypothesized that podocarp latewood growth shows increasing sensitivity to extreme climatic events (i.e. the wettest and driest years), and that the anatomical adaptation (phenotypic plasticity) of the latewood tracheids is influenced identically by limiting climatic factors in both sexes. In addition, this study aimed to 1) test podocarp sex-related differences in LWBI chronology and regional climate sensitivity, as well as spatial signatures of these relationships; 2) assess the influence of climate on tracheid anatomical features between female and male podocarps; and 3) evaluate wood anatomical adaptation between female and male podocarps in the historically wettest and driest years. The responses of the LWBI to the local mean maximum temperature, minimum temperature, and monthly precipitation showed sex-related differences. Specifically, sex differences in LWBI chronology demonstrated dissimilar spatial precipitation signals across Tropical Montane Cloud Forests. Female and male latewood tracheid traits show high anatomical plasticity associated with hydraulic efficiency, which is essential for understanding the resilience of tropical dioecious conifers in moist slope environments. Our results provide insights into how sex differences in LWBI chronologies and sex tracheid anatomical traits may be differentially adapted to wetter and drier climates.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126298"},"PeriodicalIF":2.7,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350384","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":"Moderate effects of species mixing on the growth and drought response of Austrocedrus chilensis in northern Patagonia","authors":"Loreta Facciano,&nbsp;Yamila Sasal,&nbsp;María Laura Suarez","doi":"10.1016/j.dendro.2025.126297","DOIUrl":"10.1016/j.dendro.2025.126297","url":null,"abstract":"<div><div>Accelerated climate warming, marked by rising temperatures and reduced precipitation, intensifies droughts, causing severe impacts on forest ecosystems. The mechanisms underlying the loss of tree vigor due to climate warming, are not fully understood. Overall, it appears that vigor loss is moderately controlled by regional climatic patterns and species admixture, as intra- and inter-specific interactions within a stand influence tree growth and drought performance. However, the role of the species mixing under climatic stress remains inconclusive. Here, we applied a dendroecological approach to assess growth trends, climatic responses, and drought performance in <em>Austrocedrus chilensis</em> trees growing under three species stand mixtures (pure, mixed, and diverse) in Patagonia, Argentina. Along the precipitation gradient, the general relationship between <em>A. chilensis</em> growth and moisture availability is driven by regional climatic conditions, while the response to individual extreme events is modulated by species mixing. We found that trees in mixed and diverse stands exhibited a positive growth trend in the recent decades, suggesting a beneficial effect of species combination; though the evidence remains limited on whether this complementarity lessens growth response during droughts. The drought response of <em>A. chilensis</em> was mainly shaped by the precipitation gradient rather than by stand admixture effects. However, species mixing may buffer regional climate impacts, slightly enhancing drought resilience. Comparing nearby stands with different compositions (pure vs. mixed) revealed varying climate-growth relationships, suggesting a coherent species-mixing effect on species growth. In conclusion, this relationship between stand diversity and functioning appears to be influenced by site-specific factors and species identity.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126297"},"PeriodicalIF":2.7,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143201872","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":"Growth trends in basal area increments: The underlying problem, consequences for research and best practices","authors":"Stefan Klesse ,&nbsp;Christof Bigler","doi":"10.1016/j.dendro.2025.126296","DOIUrl":"10.1016/j.dendro.2025.126296","url":null,"abstract":"<div><div>It is generally recognized that time series of tree-ring widths must be detrended, i.e. the age- or size-related trend must be removed before any climate-growth analysis can be performed. However, in contrast to ring-width (RW) analyses, there are no best practice rules on how to use basal area increment (BAI). BAI as an important variable in forestry has become also an increasingly used variable in dendrochronology. BAI is considered a better representative of the overall tree growth than RW and it is supposedly less affected by age trends than RW.</div><div>In this paper, we provide guidance by investigating the common rhetoric surrounding the use of BAI in the literature, and by highlighting possible problems and consequences from apparent misconceptions. We performed a literature review for the period 2018–2023, whether age trends in BAI time series are considered in the analysis. We also conducted additional analyses with a published tree-ring dataset of Klesse et al. (2018) to investigate whether BAI or RW time series exhibit stronger trends. Both the literature review and the data analysis provide no support for the frequently used claim that BAI time series have smaller age trends which would preclude detrending. In fact, in 58 % of the investigated time series, age trends in BAI are stronger than in RW when the trees are younger than 50 years old, and even between the ages of 51 and 100 years, we found stronger trends in BAI in 44 % of the cases. We also provide an overview of three general methods for calculating the BAI together with their advantages and disadvantages. We discuss whether the inside-out method, the outside-in method, or the Bakker (2005) method are useful to convert RW to BAI when the pith offset estimate (POE) and the diameter at breast height (DBH) are available or missing, respectively. We conclude with a general recommendation to calculate BAI based on both POE and DBH information using the Bakker method. Further, analyses with BAI should always consider the size or age of each tree, especially when trends or growth rates are compared for trees of different age classes. For climate-growth analyses, the detrending of BAI is always necessary. By addressing these key issues, we aim to improve the reliability and consistency of BAI-based studies in dendrochronology and climate-growth research.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126296"},"PeriodicalIF":2.7,"publicationDate":"2025-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143201869","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":"Dendroarchaeology at Lake Ohrid: Pine tree-ring chronology and 5th millennium BCE palisades from the pile-dwelling settlement of Lin 3, Albania","authors":"Maxim Yermokhin ,&nbsp;Andrej Maczkowski ,&nbsp;Matthias Bolliger ,&nbsp;John Francuz ,&nbsp;Adrian Anastasi ,&nbsp;Krist Anastasi ,&nbsp;Ariane Ballmer ,&nbsp;Mirco Brunner ,&nbsp;Ilirjan Gjipali ,&nbsp;Tryfon Giagkoulis ,&nbsp;Martin Hinz ,&nbsp;Marco Hostettler ,&nbsp;Johannes Reich ,&nbsp;Sönke Szidat ,&nbsp;Albert Hafner","doi":"10.1016/j.dendro.2025.126295","DOIUrl":"10.1016/j.dendro.2025.126295","url":null,"abstract":"<div><div>Archaeological research in 2021–2023 at the site of Lin 3 located on the western shore of Lake Ohrid on the Albanian side shows the extraordinary potential of a cluster of prehistoric lakeshore settlements with wooden architectural remains (so called pile-dwellings) for dendroarchaeological investigations. On an excavated area of 347 m², 706 wood samples from architectural elements were collected, with pine wood comprising 60 %. For the first time on a waterlogged submerged Neolithic settlement in the Balkans and the wider Mediterranean area, several rows of pine piles interpreted as palisades have been identified and dated by combining radiocarbon dating and dendrochronology. Additionally, their year-by-year evolution over six decades has been reconstructed, providing insights into the development of these structures within their wider context. The resulting tree-ring chronology LIN3–01 is 192-years long, with a modelled end-date for its last ring in the range of 4347–4333 cal BCE. Its robust cross-dating against oak and juniper chronologies from Ploča Mičov Grad, a site on the opposite shore of Lake Ohrid in North Macedonia, extends the tree-ring record in the region for another 10 years and increases sample replication in poorly replicated decades.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126295"},"PeriodicalIF":2.7,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143201868","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":"The first thousand-year pine tree-ring chronology in Belarus","authors":"Maxim Yermokhin","doi":"10.1016/j.dendro.2025.126287","DOIUrl":"10.1016/j.dendro.2025.126287","url":null,"abstract":"<div><div>We used tree-ring series from living trees, as well as historic and archaeological timbers from the upper and middle parts of the Neman basin, to develop the first thousand-year chronology of <em>Pinus sylvestris</em> spanning the period 997–2020AD. Historic timbers were collected from Nesvizh Castle and the Holy Intercession Church in Turets, while archaeological timbers were sourced from Hrodna Castle and Navahrudak. The chronology BY02b shows a strong correlation with those from neighboring regions, including Poland, Lithuania, Latvia, Estonia, and Northern Belarus. It was proved that Kujawpom chronology from Poland and BY02b may include trees from the same region during the 14th century. Tree-ring width consistently shows positive, stable relationships over time with June precipitation and March temperatures. Thus, this new chronology can be used not only for dating and provenancing Baltic pine wood but also as a climate proxy.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"90 ","pages":"Article 126287"},"PeriodicalIF":2.7,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143201867","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":"CTRing: An R package to extract wood density profiles from computed tomography images of discs and logs","authors":"Dipak Mahatara ,&nbsp;Filipe Campelo ,&nbsp;Laurent Houle ,&nbsp;Alain Caron ,&nbsp;Julie Barrette ,&nbsp;Pierre Francus ,&nbsp;Robert Schneider","doi":"10.1016/j.dendro.2024.126274","DOIUrl":"10.1016/j.dendro.2024.126274","url":null,"abstract":"<div><div>Accurately determining the position of pith and accessing tree-ring density profiles, including intra-ring variations, is important for both the forest industry and dendroclimatology. Although several available methods exist for acquiring this information, such as X-ray computed tomography (CT), micro-CT, and X-ray films, the availability of open-source programs for extracting data remains limited. The CTRing package in the R environment integrates a series of functions to detect precisely the pith and tree-ring boundaries and generate tree-ring density profiles using CT images of tree cross sections. Before processing, grey values are transformed into density using a calibration function. Pith position is then detected by combining an adapted Hough Transform method and a one-dimensional edge detector. Tree-ring profiles along the pith-to-bark path of interest are inspected visually, and tree-ring boundaries can be easily added or removed manually via a graphical user interface. After correcting for tree-ring boundaries, the inflection points of a 3rd-degree polynomial obtained from density profiles are used to delimit the earlywood–latewood transition. We tested this package using 60 CT-scanned images of white spruce (<em>Picea glauca</em> (Moench) Voss) discs collected at various tree heights (0 %, 25 %, 50 % and 75 % of the total tree height as well as at 1.3 m). The pith detection function had an average mean error of 0.72 mm with 95 % of the automatically detected pith locations that differed by less than 2 mm from their manually located positions. Error decreased toward the apex of the tree. The functions of the CTRing package are flexible and can be easily implemented or adapted. The package could also be used with simple images of discs to obtain ring-width time series; however, this use must be evaluated further. Future work with this package involves assessing the use of low-quality images and ring-porous species.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"88 ","pages":"Article 126274"},"PeriodicalIF":2.7,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655373","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":"A critical source of noise in tree-ring based chronologies of landslide movements","authors":"Karel Šilhán","doi":"10.1016/j.dendro.2024.126273","DOIUrl":"10.1016/j.dendro.2024.126273","url":null,"abstract":"<div><div>Tree-ring based analysis is currently a widely used tool for obtaining data on the spatio-temporal behaviour of past landslides, which is key information for determining hazard or estimating potential triggers. However, even this approach has its limitations, which may induce a lot of noise in the obtained results. In doing so, the sources of this noise, which in some cases can even simulate a spurious landslide event, are not well known. Thus, this study highlights one of the possible significant sources of noise in tree-ring based landslide chronologies, which is the effect of wind combined with the soft landslide surface, which causes instability of trees that can easily lean to simulate a landslide movement. For this purpose, 197 individuals of common spruce (<em>Picea abies</em> (L.) Karst.) on the flat parts of two flow-like landslides were analyzed. 280 growth disturbances were identified and 17 events were reconstructed. In order to assess the landslide origin of the collected data, this study included analyses of the nature and relative contribution of different types of growth disturbances, their spatial distribution, analyses of the direction and magnitude of tree trunk leaning, as well as analyses of extreme precipitation and wind events. By combining the results obtained, it can be concluded that most of the detected growth disturbances and reconstructed events were induced by wind in combination with the soft landslide surface into which the trees sink. Since these growth disturbances cannot be filtered out by standard reference trees, they are an extremely serious source of noise that can completely invalidate the dendrogeomorphic results of the study. The study thus identifies which parameters should be newly considered in dendrogeomorphic analyses of landslide movements.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"88 ","pages":"Article 126273"},"PeriodicalIF":2.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655374","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":"Stand structure and disturbance history of old-growth blue pine (Pinus wallichiana) forests in the Bhutan Himalaya","authors":"Karma Tenzin ,&nbsp;Craig R. Nitschke ,&nbsp;Kathryn J. Allen ,&nbsp;Benjamin Wagner ,&nbsp;Thiet V. Nguyen ,&nbsp;Patrick J. Baker","doi":"10.1016/j.dendro.2024.126272","DOIUrl":"10.1016/j.dendro.2024.126272","url":null,"abstract":"<div><div>Blue pine (<em>Pinus wallichiana</em>) forests are of significant ecological, economic, and cultural importance in the Himalayas. We used dendrochronological methods to investigate the role of natural and human disturbance in shaping the development of these forests. Analyses of the age structure and growth patterns of blue pine populations over the period 1760–2020 at two different sites in central Bhutan revealed that blue pine tends to establish as single-cohort stands following relatively intense disturbances and as multi-cohort stands after low-to-moderate severity disturbances. Shifting cultivation, which was common across the region, likely led to the establishment of single-cohort stands, particularly near human settlements, whereas natural disturbances are likely responsible for the development of multi-cohort stands. Tree-ring records revealed an acute change in recruitment patterns in the early 1970s associated with the 1969 Forest Act of Bhutan, which limited traditional practices, such as firewood collection and grazing, within the forests. This led to a sudden and sustained increase in the recruitment of broadleaf tree species and effectively curtailed blue pine regeneration over the past half century due to thick understory and midstory vegetation reducing the amount of light reaching the forest floor. These results highlight the role of disturbances, both human and natural, in driving forest stand dynamics in Himalayan forests and how forest policy and traditional practices can alter those dynamics.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"88 ","pages":"Article 126272"},"PeriodicalIF":2.7,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560616","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}