Dendrochronologia最新文献

{"title":"Sensitivity of sub-annual grey pine (Pinus sabiniana) stem growth to water supply and demand in central California","authors":"","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":null,"pages":null},"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":"","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":null,"pages":null},"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":"","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":null,"pages":null},"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":"","doi":"10.1016/j.dendro.2024.126249","DOIUrl":"10.1016/j.dendro.2024.126249","url":null,"abstract":"","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":null,"pages":null},"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":"","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":null,"pages":null},"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}

{"title":"Review of embedding and non-embedding techniques for quantitative wood anatomy","authors":"","doi":"10.1016/j.dendro.2024.126241","DOIUrl":"10.1016/j.dendro.2024.126241","url":null,"abstract":"<div><p>In recent decades, xylem anatomical traits have become increasingly important in dendrochronological research, as they offer the unique opportunity to assess eco-physiological drivers of tree growth at intra-annual resolution. However, standard protocols for generating such data are still missing, leading to methodological uncertainty, and complicating data exchange among laboratories. Here, we compare protocols for high-quality permanent slide preparation in dendroanatomy and address the effects of paraffin embedding vs. non-embedding approaches. Tests are conducted on both gymnosperm and angiosperm wood types of widely distributed European tree species, considering cell wall thickness (CWT), mean lumen area (MLA), and hydraulic diameter (Dh). Results indicate that non-embedding does not significantly alter the qualitative and quantitative characteristics of permanent slides compared to embedded samples. Whereas the mean chronologies of MLA and Dh and their non-embedded counterparts share substantial high-frequency variance, the CWT chronologies reveal slightly larger discrepancies at inter-annual scale. However, methodological differences do not exceed 11.1 % for any parameter. While these results show high similarity between the two approaches, we recommend adopting the non-embedding procedure, since it saves resources and therefore allows to produce larger datasets. Regardless of the protocol used to build wood anatomical datasets, assembling large-scale networks of wood anatomical data could transform our understanding of forest responses to global changes.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141851979","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":"Dendroclimatology of Prosopis nigra in the Espinal woodlands, southeastern South America","authors":"","doi":"10.1016/j.dendro.2024.126239","DOIUrl":"10.1016/j.dendro.2024.126239","url":null,"abstract":"<div><p>This paper evaluates the dendrochronological potential of <em>Prosopis nigra</em> in the subtropical xerophytic forests of northeastern Argentina, an area of the Espinal forest particularly poor in dendrochronological records. Our study is based on tree-ring analyses of 23 cross sections providing a high-quality chronology (Rbar = 0.24 and EPS = 0.92). The mean annual radial increment recorded was 2.38 ± 1.51 mm. The inter-annual variability in the tree rings indicates that water availability from the previous winter to the current summer growing season is the major forcing on tree growth. Above-average rainfall and SPEI from July to February favored radial growth. Our results show for the first time the strong influence of both ENSO 3.4 and subtropical Atlantic SST variations, mediated by changes in local precipitation, on the growth of <em>P. nigra</em> in the Espinal. We concluded that <em>P. nigra</em> has great dendrochronological and dendroclimatological potential, since its rings are visible after careful polishing of the samples, and its inter-annual variations in radial growth are related to regional climate variability. These results can help improve our knowledge of the vulnerability of xerophytic forests to climate change in northeastern Argentina. In addition, this dendroclimatological study provides new proxy climate records for the Pampean grasslands, one of the most important food producing regions in the world.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141714099","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":"Distinct spatial patterns in climate-growth relationships, vegetation and resilience indices of Black pine (Pinus nigra J.F. Arnold) from its northern and southern distribution range","authors":"","doi":"10.1016/j.dendro.2024.126236","DOIUrl":"10.1016/j.dendro.2024.126236","url":null,"abstract":"<div><p>As climate change intensifies, trees face heightened drought risks, impacting future forest composition. This study compares the climate sensitivity and resilience of black pine (<em>Pinus nigra</em>) across its north-south distribution range, guiding adaptive forest management amidst changing environmental conditions. Tree-ring cores from 211 <em>P. nigra</em> trees across seven sites in northern distribution (Slovenia) and three different sites in southern distribution range (Western Turkey), including the subspecies <em>P. nigra</em> subsp. <em>nigra</em> and <em>P. nigra</em> subsp. <em>pallasiana,</em> were analyzed. We investigated climate-growth dynamics, evaluating temperature and precipitation correlations with tree-ring width indices, and analyzed resilience indices. Leveraging remote sensing data, disparities in surface reflectance and photosynthetic activity were assessed. Our findings reveal distinct climate-growth patterns between southern and northern <em>P. nigra</em> populations, with precipitation predominantly shaping growth in the south and both precipitation and temperature influencing growth in the north. Given the site-specific conditions of each population, resilience indices further suggest that <em>P. nigra</em> subsp<em>. pallasiana</em> exhibits stronger drought tolerance. Sites in the northern range show the lowest resistance due to precipitation limitation. Temperature-limited sites demonstrate the highest resilience, indicating potential long-term effects of drought on tree growth. Our findings enhance our understanding of the climate-growth responses and resilience mechanisms in two subpopulations of <em>Pinus nigra</em> in Southern Europe.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141698571","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 multi-centennial drought reconstruction from tree-rings reveals a growing threat to Christmas Island’s water resources","authors":"","doi":"10.1016/j.dendro.2024.126238","DOIUrl":"10.1016/j.dendro.2024.126238","url":null,"abstract":"<div><p>Small islands that depend on limited freshwater resources are at significant risk from seasonal drought, which poses a major threat to both their ecosystems and communities. Christmas Island, located in the eastern Indian Ocean, presents an example for which severe drought conditions during the wet season not only affects its freshwater resources but also biodiversity on the island, including the migration pattern of the iconic red crab species. However, short-term instrumental climate records on this island make it hard to quantify drought variability and assess its associated risks. Tree growth is affected by drought via reduced soil moisture, and hydroclimate reconstruction from tree-ring chronologies can therefore provide longer-term information on historical variability of dry and wet periods. Here, we reconstructed the wet season (December-May) self-calibrating Palmer Drought Severity Index (scPDSI) for Christmas Island using 64 remote tree-ring chronologies from Asia, Australia, and New Zealand. scPDSI was reconstructed using the Point-to-Point Regression (PPR) method and compared with regional marine coral proxies for independent verification. The remote tree-ring chronologies explained more than 66 percent of scPDSI variance (R-squared) over the calibration period. The trees identified as significant predictors in the regression model were primarily located in areas affected by the Indo-Pacific climate drivers including the Indian Ocean Dipole (IOD). The reconstructions span 1540 CE to 2000. During the first four centuries of this period, the frequency of extreme (5th percentile) droughts and pluvial events rarely exceeded one event per 13 years. In contrast, the frequency of both extremes experienced an unprecedented increase during the 20th century, and with a notable shift towards dry conditions. These findings highlight a significant shift towards more frequent and severe dry conditions during the wet season on Christmas Island, posing a challenge to water resource management and potentially threatening the island's ecosystem and services to the community.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141638232","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":"Identifying the impact of climate extremes on radial growth in young tropical trees: A comparison of inventory and tree-ring based estimates","authors":"","doi":"10.1016/j.dendro.2024.126237","DOIUrl":"10.1016/j.dendro.2024.126237","url":null,"abstract":"<div><p>The loss of tropical forest resilience has been linked to increased climate variability and associated droughts, but the response of tropical trees to climate extremes remains poorly understood. This limits our ability to design effective forest adaptation strategies in the tropics. Here we analyse the potential of using young trees to analyse climate variability and extremes, which opens new avenues given the increasing area of secondary forests and tree plantations. We used annual tree diameter measurements and stem discs from 139 16-year-old trees belonging to five native species planted in the Sardinilla tree diversity experiment in Panama and compared three methods to determine annual radial growth. Employing inventory measurements, visual stem disc analysis, and wood density measurements, series of radial growth were calculated to compare relative growth during wet and dry extreme events, and to compute continuous climate-growth correlations. Our results show that annual radial growth data derived from wood density profiles are best suited for climate-growth relationships, as they could capture a common growth signal within the high intraspecific variability of young trees to seasonal climatic variables. Annual radial growth data derived visually and from inventories are still useful for quantifying growth responses during extreme drought. The highest similarity among methods to determine annual radial growth, combined with the strongest climate-growth relationships, were found for <em>Cedrela odorata</em>, a species that shows a pronounced decrease in water use and cambial dormancy during the dry season. Stem discs from young trees planted in tropical forest plantations may thus offer a suitable source for dendroecological analyses.</p></div>","PeriodicalId":50595,"journal":{"name":"Dendrochronologia","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1125786524000742/pdfft?md5=2b78cac5792aecbe9d8401b7020d02a4&pid=1-s2.0-S1125786524000742-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141637054","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}