Dendroclimatology
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Forests synchronize their growth in contrasting Eurasian regions in response to climate warming Open
Significance Forests dominate carbon fluxes in terrestrial ecosystems. We demonstrate how an intensified climatic influence on tree growth during the last 120 y has increased spatial synchrony in annual ring-width patterns within contrasti…
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A monthly global paleo-reanalysis of the atmosphere from 1600 to 2005 for studying past climatic variations Open
Climatic variations at decadal scales such as phases of accelerated warming or weak monsoons have profound effects on society and economy. Studying these variations requires insights from the past. However, most current reconstructions pro…
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Sampling bias overestimates climate change impacts on forest growth in the southwestern United States Open
Climate−tree growth relationships recorded in annual growth rings have recently been the basis for projecting climate change impacts on forests. However, most trees and sample sites represented in the International Tree-Ring Data Bank (ITR…
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Xylogenesis: Coniferous Trees of Temperate Forests Are Listening to the Climate Tale during the Growing Season But Only Remember the Last Words! Open
The complex inner mechanisms that create typical conifer tree-ring structure (i.e. the transition from large, thin-walled earlywood cells to narrow, thick-walled latewood cells) were recently unraveled. However, what physiological or envir…
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Climate extremes and predicted warming threaten Mediterranean Holocene firs forests refugia Open
Significance Climate extremes are major drivers of long-term forest growth trends, but we still lack appropriate knowledge to anticipate their effects. Here, we apply a conceptual framework to assess the vulnerability of Circum-Mediterrane…
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Consistent limitation of growth by high temperature and low precipitation from range core to southern edge of European beech indicates widespread vulnerability to changing climate Open
The aim of our study was to determine variation in the response of radial growth in Fagus sylvatica L (European Beech) to climate across the species full geographical distribution and climatic tolerance. We combined new and existing data t…
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Tree-ring anatomy and carbon isotope ratio show both direct and legacy effects of climate on bimodal xylem formation in Pinus pinea Open
Understanding how climate affects xylem formation is critical for predicting the impact of future conditions on tree growth and functioning in the Mediterranean region, which is expected to face warmer and drier conditions. However, mechan…
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Improved dendroclimatic calibration using blue intensity in the southern Yukon Open
In north-western North America, the so-called divergence problem (DP) is expressed in tree ring width (RW) as an unstable temperature signal in recent decades. Maximum latewood density (MXD), from the same region, shows minimal evidence of…
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Reconstructing 800 years of summer temperatures in Scotland from tree rings Open
This study presents a summer temperature reconstruction using Scots pine tree-ring chronologies for Scotland allowing the placement of current regional temperature changes in a longer-term context. ‘Living-tree’ chronologies were extended …
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Structure and Function of Intra–Annual Density Fluctuations: Mind the Gaps Open
Tree rings are natural archives of climate and environmental information with a yearly resolution. Indeed, wood anatomical, chemical, and other properties of tree rings are a synthesis of several intrinsic and external factors, and their i…
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Diverse growth trends and climate responses across Eurasia’s boreal forest Open
The area covered by boreal forests accounts for ∼16%of the global and 22% of theNorthern Hemisphere landmass. Changes in the productivity and functioning of this circumpolar biome not only have strong effects on species composition and div…
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Dendroclimatic potential of dendroanatomy in temperature-sensitive Pinus sylvestris Open
The most frequently and successfully used tree-ring parameters for the study of temperature variations are ring width and maximum latewood density (MXD). MXD is preferred over ring width due to a more prominent association with temperature…
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Assessing the anticipated growth response of northern conifer populations to a warming climate Open
The growth response of trees to ongoing climate change has important implications for future forest dynamics, accurate carbon accounting, and sustainable forest management. We used data from black spruce ( Picea mariana ) and jack pine ( P…
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Tree ring dating using oxygen isotopes: a master chronology for central England Open
Ring‐width dendrochronology, based on matching patterns of ring width variability, works best when trees are growing under significant environmental (climatic) stress. In the UK, and elsewhere in the temperate mid‐latitudes, trees generall…
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A 2600-year summer climate reconstruction in central Japan by integrating tree-ring stable oxygen and hydrogen isotopes Open
Oxygen isotope ratios (δ18O) of tree-ring cellulose are a novel proxy for summer hydroclimate in monsoonal Asia. In central Japan, we collected 67 conifer wood samples, mainly Chamaecyparis obtusa, with ages encompassing the past 2600 year…
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Tree-ring isotopes adjacent to Lake Superior reveal cold winter anomalies for the Great Lakes region of North America Open
Tree-ring carbon isotope discrimination (Δ 13 C) and oxygen isotopes (δ 18 O) collected from white pine ( Pinus strobus ) trees adjacent to Lake Superior show potential to produce the first winter-specific paleoclimate reconstruction with …
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Using Blue Intensity from drought-sensitive Pinus sylvestris in Fennoscandia to improve reconstruction of past hydroclimate variability Open
High-resolution hydroclimate proxy records are essential for distinguishing natural hydroclimate variability from possible anthropogenically-forced changes, since instrumental precipitation observations are too short to represent the whole…
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A 305-year continuous monthly rainfall series for the island of Ireland (1711–2016) Open
A continuous 305-year (1711–2016) monthly rainfall series (IoI_1711) is created for the Island of Ireland. The post 1850 series draws on an existing quality assured rainfall network for Ireland, while pre-1850 values come from instrumental…
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Resolving the Differences in the Simulated and Reconstructed Temperature Response to Volcanism Open
Explosive volcanism imposes impulse‐like radiative forcing on the climate system, providing a natural experiment to study the climate response to perturbation. Previous studies have identified disagreements between paleoclimate reconstruct…
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Carbon and oxygen isotope fractionations in tree rings reveal interactions between cambial phenology and seasonal climate Open
We developed novel approaches for using the isotope composition of tree‐ring subdivisions to study seasonal dynamics in tree–climate relations. Across a 30‐year time series, the δ 13 C and δ 18 O values of the earlywood (EW) cellulose in t…
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Tree growth is more limited by drought in rear-edge forests most of the times Open
Background Equatorward, rear-edge tree populations are natural monitors to estimate species vulnerability to climate change. According to biogeographical theory, exposition to drought events increases with increasing aridity towards the eq…
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Climatic Signals from Intra-annual Density Fluctuation Frequency in Mediterranean Pines at a Regional Scale Open
Tree rings provide information about the climatic conditions during the growing season by recording them in different anatomical features, such as intra-annual density fluctuations (IADFs). IADFs are intra-annual changes of wood density ap…
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Climate Change Could Negate Positive Tree Diversity Effects on Forest Productivity: A Study Across Five Climate Types in Spain and Canada Open
A positive relationship between tree diversity and forest productivity is reported for many forested biomes of the world. However, whether tree diversity is able to increase the stability of forest growth to changes in climate is still an …
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Tuning the Voices of a Choir: Detecting Ecological Gradients in Time-Series Populations Open
This paper introduces a new approach-the Principal Component Gradient Analysis (PCGA)-to detect ecological gradients in time-series populations, i.e. several time-series originating from different individuals of a population. Detection of …
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Insights into the BRT (Boosted Regression Trees) Method in the Study of the Climate-Growth Relationship of Masson Pine in Subtropical China Open
Dendroclimatology and dendroecology have entered mainstream dendrochronology research in subtropical and tropical areas. Our study focused on the use of the chronology series of Masson pine (Pinus massoniana Lamb.), the most widely distrib…
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Wood Cellular Dendroclimatology: Testing New Proxies in Great Basin Bristlecone Pine Open
Dendroclimatic proxies can be generated from the analysis of wood cellular structures, allowing for a more complete understanding of the physiological mechanisms that control the climatic response of tree species. Century-long (1870-2013) …
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Monitoring intra-annual dynamics of wood formation with microcores and dendrometers in<i>Picea abies</i>at two different altitudes Open
Seasonal analyses of cambial cell production and day-by-day stem radial increment can help to elucidate how climate modulates wood formation in conifers. Intra-annual dynamics of wood formation were determined with microcores and dendromet…
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Assessing non-linearity in European temperature-sensitive tree-ring data Open
We test the application of parametric, non-parametric, and semi-parametric calibration models for reconstructing summer (June–August) temperature from a set of tree-ring width and density data on the same dendro samples from 40 sites acros…
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Climate Change-Induced Shift of Tree Growth Sensitivity at a Central Himalayan Treeline Ecotone Open
Himalayan treelines are exposed to above average climate change impact, resulting in complex tree growth–climate relationships for Himalayan Silver Fir (Abies spectabilis (D. Don) Spach) at central Himalayan treelines. The majority of rece…
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Effect of tree-ring detrending method on apparent growth trends of black and white spruce in interior Alaska Open
Boreal forests are critical sinks in the global carbon cycle. However, recent studies have revealed increasing frequency and extent of wildfires, decreasing landscape greenness, increasing tree mortality and declining growth of black and w…