Dendrochronologia最新文献

{"title":"Tree-ring blue intensity measurements from treeline sites in the Ural Mountains exhibit a strong summer temperature signal","authors":"Viktoria V. Agapova ,&nbsp;Alberto Arzac ,&nbsp;Vladimir V. Kukarskih ,&nbsp;Ulf Büntgen ,&nbsp;Jan Esper ,&nbsp;Alexander V. Kirdyanov","doi":"10.1016/j.dendro.2024.126267","DOIUrl":"10.1016/j.dendro.2024.126267","url":null,"abstract":"<div><div>The high northern latitudes offer an ideal environment to analyze tree growth responses to unprecedented recent warming. In this study, for the first time, we explore the dendroclimatological potential of latewood blue intensity (LWBI) and delta blue intensity (DBI) at two Siberian larch (<em>Larix sibirica</em> Ledeb.) sites in the upper treeline ecotone of the Ural Mountains, northern Russia. To assess the climate signals encoded in LWBI and DBI, as well as tree-ring width (TRW) and maximum latewood density (MXD), we correlated these parameter-specific chronologies against monthly temperature means, precipitation totals, and the SPEI index. LWBI and BDI exhibit robust and stable positive correlations with summer temperature, higher than TRW but slightly lower than MXD at both sites, with marginal negative effects from precipitation and strong negative correlations with SPEI. As direct surrogates for MXD, LWBI and DBI from larch trees offer reasonable alternatives as proxies for temperatures in northern latitudes.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"88 ","pages":"Article 126267"},"PeriodicalIF":2.7,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142319145","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":"Climatic and disturbances influence on tree-rings of Larix gmelinii in the southeast coastal area","authors":"Marina Evgenienva Rubleva ,&nbsp;Anna Stepanovna Vozmishcheva ,&nbsp;Svetlana Nikolaevna Bondarchuk","doi":"10.1016/j.dendro.2024.126264","DOIUrl":"10.1016/j.dendro.2024.126264","url":null,"abstract":"<div><div>The vast region of North East Asia is covered by primary mixed conifer-broadleaved forests which include a range of different tree species. A key factor in the dynamics of these ecosystems is wind disturbance. According to reports, this factor will be increasingly important as a result of the poleward migration of tropical cyclones, a characteristic of which is strong wind. At the same time, global climate change may reduce the recovery potency of some species and lead to new combinations of species. Gmelin Larch is one of the key early succession species in the north of the region. In the southeastern part of its range (Russian Far East), this species has not been widely studied by dendroclimatologists and there are no dendroecological studies available. This study shows how the seasonal growth of Larix gmelinii responds to changes in climate, specifically to variations in precipitation and temperature. The study has established that these trees are more affected by rising temperatures than by consistent precipitation levels, provided there is no shortage of water. Interestingly, after the 1970s there was a change in the climate sensitivity of Larix gmelinii in June (the month with the strongest correlation). It went from a negative correlation with temperature to a positive correlation with precipitation. By using tree ring data, we were able to reconstruct the past history of forest disturbance. The peaks in this chronology coincide with those in earlier published dendroecological reconstructions for other species. They indicate that the radial growth of larch is sensitive to canopy changes. We recorded two release peaks in the 1960s and 2000s, during the period of meteorological observations. We attributed the first peak to the most powerful tropical cyclone Emma (1956). We assume also that the second peak reflects the recent intensification of tropical cyclones in the region. In our opinion, the change in microclimate as a result of disturbance has altered the relationship to climate in such a way that disturbance may cause tree growth to be dependent on precipitation. At the same time, such low correlations do not support a conclusion about the strong negative influence of the current climate on the trees.</div></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"88 ","pages":"Article 126264"},"PeriodicalIF":2.7,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142312109","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":"Local and regional climatic constraints of shrub and tree growth near the treeline","authors":"J. Julio Camarero ,&nbsp;Antonio Gazol ,&nbsp;Elisa Tamudo ,&nbsp;Pavel A. Moiseev ,&nbsp;Michele Colangelo ,&nbsp;Cristina Valeriano","doi":"10.1016/j.dendro.2024.126256","DOIUrl":"10.1016/j.dendro.2024.126256","url":null,"abstract":"<div><p>Many treeline and shrublines are not responding to climate warming as fast as expected. This lack of responsiveness could be explained by other non-thermal, climate drivers operating at the cold edge of distribution of trees and shrubs. To determine which are the main climate drivers of tree and shrub radial growth near the treeline we measured ring width and related it to climate variables (temperature, precipitation, snow depth) and vegetation greenness (NDVI, Normalized Different Vegetation Index). We compared two dwarf shrub (<em>Vaccinium uliginosum</em>, <em>Dryas octopetala</em>) and three tree species (<em>Larix sibirica</em>, <em>Picea obovata</em>, <em>Pinus uncinata</em>) sampled in three treeline sites: Polar or Northern Urals, Southern Urals, and Spanish Pyrenees. Dwarf shrubs presented lower first-order autocorrelation (AR1) than trees, excepting in the N. Urals site. In this site, <em>V. uliginosum</em> showed a negative growth trend, whereas this tendency was observed in <em>P. obovata</em> and <em>P. uncinata</em> trees from the S. Urals and Pyrenees sites, respectively. Shrub and tree growth indices correlated with NDVI at different months. Trees showed stronger and positive growth responses to warmer summer conditions and also negative responses to precipitation in the N. and S. Urals. The growth of <em>D. octopetala</em> in the Pyrenees was enhanced by prior-winter and current-spring precipitation showing a strong correlation with May snow depth (<em>r</em> = 0.66, <em>p</em> = 0.0006, period 1998−2020). Dwarf shrubs and trees coexisting near the treeline differently responded to regional climate variability. Our findings indicate a strong dependence of shrubs and trees on local (e.g., snow depth) and regional (e.g., growing-season air temperature) climate conditions, respectively.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"88 ","pages":"Article 126256"},"PeriodicalIF":2.7,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1125786524000936/pdfft?md5=4e2c88e77eefb321c03808ae8eea949b&pid=1-s2.0-S1125786524000936-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142151600","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":"Collecting large diameter cores from living trees with commercial drill bits and increment borers","authors":"Lee Grace ,&nbsp;Erin Price ,&nbsp;Emily Crumley ,&nbsp;Phil Guillery ,&nbsp;Victor Deklerck ,&nbsp;Kent Elliott ,&nbsp;Ellen Crocker","doi":"10.1016/j.dendro.2024.126255","DOIUrl":"10.1016/j.dendro.2024.126255","url":null,"abstract":"<div><p>Foresters and scientists worldwide rely on the use of increment borers to collect wood cores from living trees for dendrochronology and a range of other applications. While there are many different types of increment borers, 4–5 mm diameter manual borers are most frequently used. Although these standard-size devices have a long history with well-established protocols, a range of newer analyses require the collection of larger diameter cores from living trees. To meet these needs, researchers worldwide have developed an array of techniques to collect these types of samples but little information is available comparing approaches and synthesizing options. Here, we summarize work testing several different commonly employed techniques for excising larger width (∼10 mm diameter) cores from living trees, comparing strengths and weaknesses of each approach. In addition to informing the selection of methods and equipment for researchers collecting larger diameter cores, this information may also provide new ideas for exploring core collection options beyond traditional increment borers.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"87 ","pages":"Article 126255"},"PeriodicalIF":2.7,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142122635","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":"Interspecific, conspecific, and ontogenetic responses of tree rings to climate: A case study utilizing Carya glabra, Carya ovata, Carya tomentosa, and Quercus montana from an Oak-Hickory Forest in Southeastern Ohio","authors":"Aaron J. Rudolph ,&nbsp;Rebecca S. Snell,&nbsp;Elena Delach,&nbsp;Brian C. McCarthy","doi":"10.1016/j.dendro.2024.126254","DOIUrl":"10.1016/j.dendro.2024.126254","url":null,"abstract":"<div><p>Climate change in eastern North America is likely to impact the abundance and distribution of the region’s tree species. However, determining the degree to which species will be impacted by altered climates is challenging. Dendrochronology research aimed at understanding relationships between climate and annual ring-width is one way of understanding how climate change may impact forest communities. Oak (<em>Quercus</em> spp.) and hickory (<em>Carya</em> spp.) are two foundational groups of trees likely to undergo changes in abundance and distribution due to climate change. The goal of this study was to compare the radial growth climate sensitivity of three common and co-occurring hickory species (<em>Carya glabra</em>, <em>Carya ovata</em>, and <em>Carya tomentosa</em>) to ecologically similar <em>Quercus montana</em> in southeast Ohio. Also, this study compared conspecific radial-growth climate responses between canopy and subcanopy trees to assess the impacts of climate and drought on subcanopy forest layers. All four species in the forest canopy demonstrated significant positive relationships to growing season precipitation, significant negative relationships with growing season temperature, and significant positive relationships with growing season site water balance. Subcanopy chronologies for all four species demonstrated weaker growth responses to climate, with only <em>Carya glabra</em> demonstrating significant growth relationships with May precipitation and site water balance. Additionally, the increased drought resistance of subcanopy trees provided some evidence of the forest overstory buffering the impacts of climate variability on understory trees. Overall, ontogenetic differences in tree sensitivity to climate variability and drought show that climate change likely has the potential to influence the forest understory, but the degree to which systems are impacted may be highly species-specific.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"87 ","pages":"Article 126254"},"PeriodicalIF":2.7,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141991084","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":"Sensitivity of sub-annual grey pine (Pinus sabiniana) stem growth to water supply and demand in central California","authors":"Jackie Y. Ho ,&nbsp;Miriam R. Johnston ,&nbsp;Matthew P. Dannenberg ,&nbsp;Antoine Cabon ,&nbsp;Paul R. Moorcroft","doi":"10.1016/j.dendro.2024.126253","DOIUrl":"10.1016/j.dendro.2024.126253","url":null,"abstract":"<div><p><em>Pinus sabiniana</em> (grey pine) is a common associate of <em>Quercus douglasii</em> (blue oak) in the iconic, ecologically-rich, and economically-relevant Mediterranean woodland savannah of California, USA. While there are dozens of <em>Q. douglasii</em> sites in the International Tree-Ring Data Bank, <em>P. sabiniana</em> was conspicuously absent, and little is known about its growth patterns or water relations. Here, we introduce a new tree-ring chronology of <em>P. sabiniana</em> collected in central California and assess climatic drivers of annual and sub-annual growth. Specifically, we examine earlywood, latewood, and total annual ring widths and analyse their relationships with variables related to water supply (precipitation, soil moisture) and water demand (air temperature, potential evaporation rate). Annual and earlywood widths had nearly identical responses to climate, likely because annual widths mostly consisted of earlywood (mean: 88 %). In both cases, growth was strongly and positively associated with water supply and negatively associated with water demand. Soil moisture was, by far, the strongest and most temporally-consistent correlate of <em>P. sabiniana</em> growth: correlations between soil moisture and annual growth were &gt;0.8 for five contiguous 3-month seasons. Other variables were significant, in part, because of their influence on soil moisture. The association between latewood growth and climate was qualitatively similar but weaker and, with the exception of soil moisture, more seasonally localised (precipitation was relevant in winter and early spring and water demand variables were relevant in summer, somewhat later in the season than for total ring width and earlywood). Further, <em>P. sabiniana</em> growth was nearly always more sensitive to soil moisture than growth of either co-located <em>Q. douglasii</em> or <em>P. ponderosa</em> (ponderosa pine) at a neighbouring site, suggesting that it may act as a particularly sensitive harbinger of drought stress in this ecosystem.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"87 ","pages":"Article 126253"},"PeriodicalIF":2.7,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141991085","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":"Declining trends in long-term Pinus pinea L. growth forecasts in Southwestern Spain","authors":"Fabio Natalini ,&nbsp;Reyes Alejano ,&nbsp;Marta Pardos ,&nbsp;Rafael Calama ,&nbsp;Javier Vázquez-Piqué","doi":"10.1016/j.dendro.2024.126252","DOIUrl":"10.1016/j.dendro.2024.126252","url":null,"abstract":"<div><p>Warmer and drier climate is among the main factors of the declining processes reported and expected for the future in the Mediterranean forest ecosystems. <em>Pinus pinea</em> is one the main Mediterranean conifers and its largest populations are in SW Spain, providing multifunctional services. The sensitivity of this species to drought is known, but the potentiality of its productivity to decline in SW Spain has not been yet assessed. We modeled <em>P. pinea</em> growth with climate covariates and a large set of tree ring chronologies from the beginning of the 20th century to the 2010s. Then we forecast annual increments over the period 2030–2100 using regionalized estimates of a global change model in three scenarios of greenhouse gas concentration. The climatic conditions between winter and mid spring were the most significant for the model. The climate predictions indicated an increase of potential water stress, and our forecasts described downturn trends of the annual growth, more accentuated in the scenario with the highest emissions and temperatures. These are the first long-term forecasts of growth of <em>P. pinea</em> in SW Spain. Our model cannot be directly applied at higher latitudes, where previous studies have shown differences in climate-growth relationships, but provides a benchmark for research and forestry of the potential climate-driven decrease of productivity of the <em>P. pinea</em> populations in the Southern Iberian Peninsula.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"88 ","pages":"Article 126252"},"PeriodicalIF":2.7,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1125786524000894/pdfft?md5=a796b9b5ec6721b0a8c9575d03528005&pid=1-s2.0-S1125786524000894-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141960765","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":"Further clarifications needed: Why Jetschke et al. (2023) underestimated the efficacy of bias-adjusted, standardized growth changes for pointer-year detection","authors":"Allan Buras","doi":"10.1016/j.dendro.2024.126240","DOIUrl":"10.1016/j.dendro.2024.126240","url":null,"abstract":"<div><p>In a recent communication, Jetschke et al. (2023) compared various pointer-year detection methods against the recently published (bias-adjusted) standardized growth change method (SGC and BSGC, Buras et al., 2020, 2022). Based on their comparative evaluation, Jetschke et al. (2023) pointed out specific weaknesses of the (B)SGC methods. In this short communication, I reveal their analyses to be erroneous and consequently their conclusions to be based on false grounds.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"88 ","pages":"Article 126240"},"PeriodicalIF":2.7,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1125786524000778/pdfft?md5=5e14c4eb76e62dd57b3682d7d4cff37c&pid=1-s2.0-S1125786524000778-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141845176","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 trace of 2023","authors":"Cristina Nabais,&nbsp;Filipe Campelo,&nbsp;Holger Gärtner","doi":"10.1016/j.dendro.2024.126249","DOIUrl":"10.1016/j.dendro.2024.126249","url":null,"abstract":"","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"88 ","pages":"Article 126249"},"PeriodicalIF":2.7,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141844142","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":"Climate drivers of Pinus ponderosa tree development on volcanic tephra deposits in the Southwestern USA: Insights from radial increment and wood density variations","authors":"Julieta Gabriela Arco Molina ,&nbsp;Jan Altman ,&nbsp;Samresh Rai ,&nbsp;Kirill Korznikov ,&nbsp;Vit Pejcha ,&nbsp;Miroslav Dvorsky ,&nbsp;Jiri Doležal","doi":"10.1016/j.dendro.2024.126242","DOIUrl":"10.1016/j.dendro.2024.126242","url":null,"abstract":"<div><p>Understanding the complex dynamics of past tree growth-climate interactions is essential for predicting forest ecosystem responses to current climate change. Here, we explore the climate drivers of long-term growth dynamics in 400-year-old <em>Pinus ponderosa</em> trees at Sunset Crater Volcano in northern Arizona, including recent responses to unprecedented warming. To evaluate multiple climate factors potentially limiting montane trees on porous lava at 2450 m elevation, we employed several tree-ring proxies, including total ring width (TRW), earlywood width (EWW), latewood width (LWW), earlywood minimum density (minD), and latewood maximum density (maxD). We used static and moving correlations to assess how variations in previous and current year temperatures, precipitation, Standardised Precipitation-Evapotranspiration Index (SPEI), El Niño 3.4, and Pacific Decadal Oscillation (PDO) indices impact overall growth and density and their seasonal pattern. Our analyses revealed a seasonal shift in climate drivers, from the positive influence of winter and spring precipitation on EWW and minD to the negative effect of high summer temperatures and drought on LWW and maxD. This supports the hypothesis that tree growth in semi-arid regions results from a complex interplay between soil water content and evaporative forcing. Diminished precipitation and increased temperatures reduced EWW (constituting ∼60 % of total TRW), notably in the years 1925–1950 and 1990–2010, while the most favorable periods for growth were during cooler, wetter years 1900–1925 and 1960–1980, resulting in large EWW with low minD. During the warmer and drier years of 1930–1960 and 1990–2016, warmer Pacific waters, indicated by positive PDO and El Niño 3.4 indices, promoted wider earlywood with larger lumen size and thus lower minD, likely due to increased moisture and reduced spring drought. There was no marked growth decline in the last three warmest decades due to relatively stable precipitation. However, since the 1980s, climate drivers have shifted from winter and spring to summer, possibly contributing to extremely low growth years and fire events in the region due to summer heatwaves and droughts. These findings contribute to a better understanding of the complex relationship between climate change and tree growth dynamics in vulnerable semi-arid mountain forests.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":"88 ","pages":"Article 126242"},"PeriodicalIF":2.7,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141847899","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}