scholarly journals Cutting tree rings into time slices: How intra‐annual dynamics of wood formation help decipher the space‐for‐time conversion

2021 ◽  
Author(s):  
Gonzalo Pérez‐de‐Lis ◽  
Cyrille B. K. Rathgeber ◽  
Laura Fernández‐de‐Uña ◽  
Stéphane Ponton
Keyword(s):  
Tree Rings ◽  
Wood Formation

scholarly journals The significance of compression wood in restoration of the leader in Pinus sihestris L. damaged by moose (Alces alces). II. Structure of growth rings in regenerating stems in relation to juvenile wood formation

2015 ◽  
Vol 40 (2) ◽  
pp. 315-340 ◽  
Author(s):  
B. A. Molski
Keyword(s):  
Tree Ring ◽  
Tree Rings ◽  
Compression Wood ◽  
Juvenile Wood ◽  
Alces Alces ◽  
Wood Formation ◽  
Ring Structure ◽  
Growth Rings ◽  
Late Wood ◽  
Wood Compression

The corewood of pine ds very prone to compression wood formation, this changing the whole pattern of the tree ring structure and the siz.es of early and late wood. Compression wood always increases the formation of late wood at the expense of early wood. Tree rings with compression wood are generally wider than those without it, but there occur also tree rings wihout compression wood wider than those in which it is present, formed in the same year and in the same tree.

scholarly journals From Dendrochronology to Allometry

Forests ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 146 ◽  
Author(s):  
Franco Biondi
Keyword(s):  
Tree Ring ◽  
Tree Rings ◽  
Tree Growth ◽  
Scientific Inquiry ◽  
Population Biology ◽  
Wood Formation ◽  
Allometric Relationships ◽  
Growth Study ◽  
Accurate Identification ◽  
Ring Analysis

The contribution of tree-ring analysis to other fields of scientific inquiry with overlapping interests, such as forestry and plant population biology, is often hampered by the different parameters and methods that are used for measuring growth. Here I present relatively simple graphical, numerical, and mathematical considerations aimed at bridging these fields, highlighting the value of crossdating. Lack of temporal control prevents accurate identification of factors that drive wood formation, thus crossdating becomes crucial for any type of tree growth study at inter-annual and longer time scales. In particular, exactly dated tree rings, and their measurements, are crucial contributors to the testing and betterment of allometric relationships.

From xylogenesis to tree rings: wood traits to investigate tree response to environmental changes

IAWA Journal ◽  
2019 ◽  
Vol 40 (2) ◽  
pp. 155-182 ◽  
Author(s):  
Veronica De Micco ◽  
Marco Carrer ◽  
Cyrille B.K. Rathgeber ◽  
J. Julio Camarero ◽  
Jordi Voltas ◽  
...  
Keyword(s):  
Tree Ring ◽  
Tree Rings ◽  
Environmental Changes ◽  
Research Question ◽  
Wood Formation ◽  
Environmental Drivers ◽  
Formation Processes ◽  
Environmental Signals ◽  
Intrinsic Factors ◽  
Environmental Events

ABSTRACTIt is noteworthy that the largest part of global vegetation biomass depends on a thin layer of cells: the vascular cambium. Understanding the wood formation processes and relationships with environmental factors is a crucial and timely research question requiring interdisciplinary efforts, also to upscale the information gained and to evaluate implications for tree growth and forest productivity.We provide an overview of wood formation processes up to tree-ring development, bearing in mind that the combined action of intrinsic factors and environmental drivers determines the anatomical traits of a tree ring formed at a specific time and position within the tree’s architecture. After briefly reviewing intrinsic factors, we focus attention on environmental drivers highlighting how a correct interpretation of environmental signals in tree rings must be grounded in a deep knowledge of xylogenesis and consequent wood anatomical traits. We provide guidelines on novel methods and approaches recently developed to study xylem formation. We refer to existing literature on established techniques for retrospective analyses in tree-ring series of anatomical and isotopic traits, to assess long-term ecophysiological responses to environmental variations, also giving advice on possible bias because of interand within-tree variability.Finally, we highlight that, once the temporal axis of intra-annual tree-ring variability of xylem traits is established by xylogenesis analysis, a multidisciplinary approach linking classical dendro-ecology, wood functional traits (dendro-anatomy) and eco-physiology (here focusing on dendro-isotopes) allows a better interpretation of past environmental events hidden in tree rings, and more reliable forecasts of wood growth in response to climate change.

scholarly journals Intra-annual variability of wood formation and δ13C in tree-rings at Hyytiälä, Finland

2016 ◽  
Vol 224 ◽  
pp. 17-29 ◽  
Author(s):  
Alex Soudant ◽  
Neil J. Loader ◽  
Janna Bäck ◽  
Janne Levula ◽  
Natascha Kljun
Keyword(s):  
Tree Rings ◽  
Wood Formation ◽  
Annual Variability

Developmental and environmental factors driving xylem anatomy and micro-density

2021 ◽  
Author(s):  
Annie Deslauriers ◽  
Valentinà Buttò ◽  
Fabrizio Cartenì ◽  
Sergio Rossi ◽  
Hubert Morin
Keyword(s):  
Cell Wall ◽  
Tree Ring ◽  
Wood Density ◽  
Tree Rings ◽  
Growing Season ◽  
Wood Formation ◽  
Cell Diameter ◽  
Wall Deposition ◽  
Sugar Signal ◽  
Simple Sugar

<p>The current research on the dynamics of tree ring formation in conifers has provided new insights into how rate and duration xylem-cell production and development control the size of the xylem conduits leading to the formation of earlywood and latewood. So far, the physiology behind wood formation processes and the associated kinetics has rarely been considered, leading to the impossibility to grasp the drivers of wood density changes along the tree-rings. Despite the importance of wood density for carbon sequestration and tree hydraulics, little is known about the factors controlling variations in wood density across the tree ring, i.e. micro-density, at the intra-annual scale. We first developed a process-based mechanistic model that simulates the development of conifer tracheids from a simple sugar signal that we discuss together with the main kinetics and environmental variables leading to the formation of micro-density in black spruce, the main conifers species in the boreal forest of Canada. At the beginning of the growing season, low sugar availability in the cambium results in slow wall deposition that allows for a lengthier enlargement time thus producing large cells with thin walls (i.e. earlywood). In late summer and early autumn, high sugar availability produces narrower cells with thick cell walls (i.e. latewood). Wood formation dynamics had an indirect effect on micro-density. Micro-density increased under longer periods of cell wall deposition and shorter durations of enlargement. Cell diameter indirectly affected micro-density via cell wall thickness, which was the most important parameter affecting micro-density. Cell traits experienced the joint action of enlargement and secondary wall deposition in shaping the intra-annual patterns of tree rings. Our results point to the predictive power of a simple sugar signal. During the growing season, the amount of carbon allocated to wood formation largely influences the duration of cell differentiation, thus modulating cell diameter, cell wall thickness and by result tree-ring micro-density.</p><p> </p>

Bright sparks reveal invisible tree rings

Nature ◽  
2006 ◽  
Author(s):  
Quirin Schiermeier
Keyword(s):  
Tree Rings
Sign in / Sign up

Export Citation Format

Share Document