New perspectives on sub-seasonal xylem anatomical responses to climatic variability

Ziaco, Emanuele; Liang, Eryuan

doi:10.1007/s00468-018-1786-9

Cited by 15 publications

(9 citation statements)

References 27 publications

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“…It might be initiated by factors and environmental cues that coincide with the human construction of seasons, but investigations into stem growth and climate-radial growth dynamics indicate that using climate seasons might not best capture when trees grow and what aspects of climate constrain or propel growth (Kim and Siccama, 1986). For example, most radial growth increment often occurs within 2-3 months and is mostly complete by late July in the Northern Hemisphere (Deslauriers et al, 2007;McMahon and Parker, 2015;Ziaco and Liang, 2019). High resolution analysis indicates the peak of climate-radial growth dynamics can occur in narrow bands that straddle month boundaries, like in Italy where peak dynamics occurs at the end of May and beginning of July (Carrer et al, 2017).…”

Section: Determining Climate-growth Relationsmentioning

confidence: 99%

A Framework for Determining Population-Level Vulnerability to Climate: Evidence for Growth Hysteresis in Chamaecyparis thyoides Along Its Contiguous Latitudinal Distribution

Pederson

Leland

Bishop

et al. 2020

Front. For. Glob. Change

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The impact of ecological and climatological factors on individual organisms over time and space is inherently complex and creates substantial uncertainty about how climate change will influence the global biosphere. To understand some of this complexity, we investigated the factors influencing individual growth of Chamaecyparis thyoides over 61 years within 18 populations across the ca 1500 km and 11 degrees of latitude. We then applied a vulnerability framework to understand how the variability of tree growth response to climate varies between populations and regions across our network. Surprisingly, we found the growth of trees in the central portion of our network responded more synchronously to warming and drought than trees in the southern end of our network, suggesting greater vulnerability in the central populations with continued warming. Our analyses and framework approach revealed substantial complexity in growth responses to climate within and between populations. We found potential resiliency within all populations, but higher inter-population than intrapopulation variability in response to climate. We found that latitude was an important proxy for the growth response to temperatures during the non-growing season and spring, but that ecosystem structure can modify the growth response and vulnerability to drought during the summer. The range of growth responses to warming is greater in the southern populations than in more northernly populations. This asymmetrical distribution of growth response across our study network provides evidence for a kind of ecological hysteresis, more southerly populations could be more resilient with warming. Despite the fact that this species primarily lives in wetlands, we found drought stress to be an important constraint on growth. Our study and analyses help to explain the disparities between forecasts of how climatic change might impact tree species and ecosystems over space.

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Section: Determining Climate-growth Relationsmentioning

confidence: 99%

A Framework for Determining Population-Level Vulnerability to Climate: Evidence for Growth Hysteresis in Chamaecyparis thyoides Along Its Contiguous Latitudinal Distribution

Pederson

Leland

Bishop

et al. 2020

Front. For. Glob. Change

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“…An intra-annual variability of xylem may not capture the complexity of tree phenological responses to environmental conditions due to the unsuitable but commonly used analytical tools [18]; even in extreme climate conditions, a genetic control may play a role in xylem development [22,23]. Despite the numerous measurements of seasonal growth in woody plants of different species and under different growth conditions (from subarctic to moisture-deficient southern sites), fundamental issues on what determines the simplest anatomical characteristics in conifers (radial cell size and cell wall thickness) and in what intervals of the growing season are still the topic for research discussions [17,[24][25][26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Tracheidogram’s Classification as a New Potential Proxy in High-Resolution Dendroclimatic Reconstructions

Zharkov

Huang

Yang

et al. 2022

Forests

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Quantitative wood anatomy (QWA) is widely used to resolve a fundamental problem of tree responses to past, ongoing and forecasted climate changes. Potentially, QWA data can be considered as a new proxy source for long-term climate reconstruction with higher temporal resolution than traditional dendroclimatic data. In this paper, we considered a tracheidogram as a set of two interconnected variables describing the dynamics of seasonal variability in the radial cell size and cell wall thickness in conifer trees. We used 1386 cell profiles (tracheidograms) obtained for seven Scots pine (Pinus sylvestris) trees growing in the cold semiarid conditions of Southern Siberia over the years 1813–2018. We developed a “deviation tracheidogram” approach for adequately describing the traits of tree-ring formation in different climate conditions over a long-term time span. Based on the NbClust approach and K-means method, the deviation tracheidograms were reliably split into four clusters (classes) with clear bio-ecological interpretations (from the most favorable growth conditions to worse ones) over the years 1813–2018. It has been shown that the obtained classes of tracheidograms can be directly associated with different levels of water deficit, for both the current and previous growing seasons. The tracheidogram cluster reconstruction shows that the entire 19th century was characterized by considerable water deficit, which has not been revealed by the climate-sensitive tree-ring chronology of the study site. Therefore, the proposed research offers new perspectives for better understanding how tree radial growth responds to changing seasonal climate and a new independent proxy for developing long-term detailed climatic reconstructions through the detailed analysis of long-term archives of QWA data for different conifer species and various forest ecosystems in future research.

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“…Furthermore, the partitioning of tree rings into sub-sections (herein referred to as “sectors”) is a rapidly growing technique with the potential to improve the temporal resolution of the climatic signal encoded in intra-annual xylem cellular structures ( Carrer et al, 2017 ). Tree-ring partitioning, either in equal parts ( Castagneri et al, 2017 ) or between earlywood and latewood ( Fonti and García-González, 2004 ; Torbenson et al, 2016 ), better characterizes intra-seasonal changes in wood anatomical features along the tree ring and is expected to enhance the temporal resolution of climate-anatomy relationships while also clarifying and expanding the amount and quality of environmental information obtainable from trees ( Ziaco and Liang, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Wood Anatomy of Douglas-Fir in Eastern Arizona and Its Relationship With Pacific Basin Climate

et al. 2021

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Dendroclimatic reconstructions, which are a well-known tool for extending records of climatic variability, have recently been expanded by using wood anatomical parameters. However, the relationships between wood cellular structures and large-scale climatic patterns, such as El Niño-Southern Oscillation (ENSO) and the Pacific Decadal Oscillation (PDO), are still not completely understood, hindering the potential for wood anatomy as a paleoclimatic proxy. To better understand the teleconnection between regional and local climate processes in the western United States, our main objective was to assess the value of these emerging tree-ring parameters for reconstructing climate dynamics. Using Confocal Laser Scanning Microscopy, we measured cell lumen diameter and cell wall thickness (CWT) for the period 1966 to 2015 in five Douglas-firs [Pseudotsuga menziesii (Mirb.) Franco] from two sites in eastern Arizona (United States). Dendroclimatic analysis was performed using chronologies developed for 10 equally distributed sectors of the ring and daily climatic records to identify the strongest climatic signal for each sector. We found that lumen diameter in the first ring sector was sensitive to previous fall–winter temperature (September 25th to January 23rd), while a precipitation signal (October 27th to February 13th) persisted for the entire first half of the ring. The lack of synchronous patterns between trees for CWT prevented conducting meaningful climate-response analysis for that anatomical parameter. Time series of lumen diameter showed an anti-phase relationship with the Southern Oscillation Index (a proxy for ENSO) at 10 to 14year periodicity and particularly in 1980–2005, suggesting that chronologies of wood anatomical parameters respond to multidecadal variability of regional climatic modes. Our findings demonstrate the potential of cell structural characteristics of southwestern United States conifers for reconstructing past climatic variability, while also improving our understanding of how large-scale ocean–atmosphere interactions impact local hydroclimatic patterns.

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New perspectives on sub-seasonal xylem anatomical responses to climatic variability

Abstract: Key messageQuantitative wood anatomy represents a tool to investigate paleoclimatic signals on a seasonal to sub-seasonal basis.

Cited by 15 publications

References 27 publications

A Framework for Determining Population-Level Vulnerability to Climate: Evidence for Growth Hysteresis in Chamaecyparis thyoides Along Its Contiguous Latitudinal Distribution

A Framework for Determining Population-Level Vulnerability to Climate: Evidence for Growth Hysteresis in Chamaecyparis thyoides Along Its Contiguous Latitudinal Distribution

Tracheidogram’s Classification as a New Potential Proxy in High-Resolution Dendroclimatic Reconstructions

Wood Anatomy of Douglas-Fir in Eastern Arizona and Its Relationship With Pacific Basin Climate

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