scholarly journals Fossile Föhren – präzises Werkzeug der Paläoklimaforschung: Stand der Jahrringforschung an fossilen Bäumen und Vernetzung hochauflösender Archive | Fossil pine trees – accurate tool in paleoclimatic research

2004 ◽  
Vol 155 (6) ◽  
pp. 233-237
Author(s):  
Klaus Felix Kaiser ◽  
Matthias Schaub
Keyword(s):  
High Resolution ◽  
Tree Ring ◽  
Tree Rings ◽  
Younger Dryas ◽  
Ice Cores ◽  
Tree Ring Chronology ◽  
Pine Trees ◽  
The Absolute

A comparison of different high-resolution archives, such as tree rings, ice cores and marine varves show high degrees of similarity and reveal significant hemispheric climatic events (Older Dryas, Gerzensee Deviation, onset of Younger Dryas). Even the eruption of the Laachersee volcano (Eifel, Germany) 13 070 years ago is recorded synchronously in all of these archives. Trees from the Zurich area extend the absolute tree-ring chronology back to 12 449 years BP. This extension is relevant for quaternary research as well as for calibrating the 14C curve and other archives. The recent findings from the Uetliberg may provide further progress in filling the existing gaps in the Lateglacial tree-ring chronologies.

scholarly journals ABSOLUTE DENDROCHRONOLOGICAL SCALE FOR PINE (PINUS SYLVESTRIS L.) FROM UJŚCIE (NW POLAND), DATED USING RAPID ATMOSPHERIC 14C CHANGES

Radiocarbon ◽  
2020 ◽  
pp. 1-10
Author(s):  
Marek Krąpiec ◽  
Andrzej Rakowski ◽  
Jacek Pawlyta ◽  
Damian Wiktorowski ◽  
Monika Bolka
Keyword(s):  
High Resolution ◽  
Pinus Sylvestris ◽  
Middle Ages ◽  
Tree Ring ◽  
Tree Rings ◽  
Matching Method ◽  
Early Middle Ages ◽  
Rapid Changes ◽  
Absolute Age ◽  
Nw Poland

ABSTRACT Radiocarbon (14C) analyses are commonly used to determine the absolute age of floating tree-ring chronologies. At best, with the wiggle-matching method, a precision of 10 years could be achieved. For the early Middle Ages, this situation has been markedly improved by the discovery of rapid changes in atmospheric 14C concentrations in tree-rings dated to 774/775 and 993/994 AD. These high-resolution changes can be used to secure other floating tree-ring sequences to within 1-year accuracy. While a number of studies have used the 774 even to secure floating tree-ring sequences, the less abrupt 993 event has not been so well utilized. This study dates a floating pine chronology from Ujście in Wielkopolska (Greater Poland) (NW Poland), which covers the 10th century period and is critical for studies on the beginning of the Polish State to the calendar years 859–1085 AD using the changes in single year radiocarbon around 993/4 AD.

scholarly journals A Test of “Annual Resolution” in Stalagmites Using Tree Rings

2002 ◽  
Vol 58 (2) ◽  
pp. 197-199 ◽  
Author(s):  
Julio L. Betancourt ◽  
Henri D. Grissino-Mayer ◽  
Matthew W. Salzer ◽  
Thomas W. Swetnam
Keyword(s):  
New Mexico ◽  
Tree Ring ◽  
Tree Rings ◽  
Late Holocene ◽  
Ice Cores ◽  
Time Interval ◽  
Annual Resolution

AbstractSo-called annual banding has been identified in a number of speleothems in which the number of bands approximates the time interval between successive U-series dates. The apparent annual resolution of speleothem records, however, remains largely untested. Here we statistically compare variations in band thickness from a late Holocene stalagmite in Carlsbad Cavern, Southern New Mexico, USA, with three independent tree-ring chronologies form the same region. We found no correspondence. Although there may be various explanations for the discordance, this limited exercise suggests that banded stalagmites should be held to the same rigorous standards in chronology building and climatic inference as annually resolved tree rings, corals, and ice cores.

scholarly journals Potential for a New Multimillennial Tree-Ring Chronology from Subfossil Balkan River Oaks

Radiocarbon ◽  
2014 ◽  
Vol 56 (04) ◽  
pp. S51-S59
Author(s):  
Charlotte L. Pearson ◽  
Tomasz Ważny ◽  
Peter I. Kuniholm ◽  
Katarina Botić ◽  
Aleksandar Durman ◽  
...  
Keyword(s):  
High Resolution ◽  
Central Europe ◽  
Tree Ring ◽  
Bosnia And Herzegovina ◽  
Mediterranean Region ◽  
Paleoenvironmental Reconstruction ◽  
Tree Ring Chronology ◽  
Measurement Series ◽  
Balkan Region

A total of 272 oak (Quercussp.) samples have been collected from large subfossil trees dredged from sediment deposited by the Sava and various tributary rivers in the Zagreb region of northwestern Croatia, and in northern Bosnia and Herzegovina. Measurement series of tree-ring widths from these samples produced 12 groups, totaling 3456 years of floating tree-ring chronologies spread through the last ca. 8000 years. This work represents the first step in creating a new, high-resolution resource for dating and paleoenvironmental reconstruction in the Balkan region and potentially a means to bridge between the floating tree-ring chronologies of the wider Mediterranean region and the continuous long chronologies from central Europe.

Revised ‘absolute’ dating of the early Mesolithic site of Star Carr, North Yorkshire, in the light of changes in the early Holocene tree-ring chronology

Antiquity ◽  
2000 ◽  
Vol 74 (284) ◽  
pp. 304-307 ◽  
Author(s):  
Petra Dark
Keyword(s):  
Environmental Change ◽  
Tree Ring ◽  
Calibration Curve ◽  
Early Holocene ◽  
Tree Ring Chronology ◽  
Absolute Dating ◽  
The Absolute ◽  
Holocene Environmental Change ◽  
Radiocarbon Calibration

Recent revision of the radiocarbon calibration curve for the early Holocene has implications for the ‘absolute’ date of Mesolithic sites such as Star Carr, and for their relationship to the timescale of early Holocene environmental change.

A New Annual 14C Dataset for Calibrating the Thera Eruption

Radiocarbon ◽  
2020 ◽  
Vol 62 (4) ◽  
pp. 953-961 ◽  
Author(s):  
Ronny Friedrich ◽  
Bernd Kromer ◽  
Lukas Wacker ◽  
Jesper Olsen ◽  
Sabine Remmele ◽  
...  
Keyword(s):  
Quality Control ◽  
Tree Ring ◽  
Tree Rings ◽  
Annual Data ◽  
Calibration Data ◽  
Tree Ring Chronology ◽  
Time Period ◽  
Oak Tree ◽  
Thera Eruption

ABSTRACTAnnually resolved tree-ring samples of the time period 1625–1510 BCE were analyzed from the German oak tree-ring chronology. Blocks of the same tree rings were previously used to generate IntCal calibration data. The new dataset shows an offset to the calibration data IntCal13 of 24 years and resembles annual data for the same time period derived from tree-ring records in other growth locations. A subset of samples of the period 1625–1585 BCE was additionally measured in three other laboratories (ETH, AAR, AA) for quality control.

scholarly journals A 241-Year Cryptomeria fortune Tree-Ring Chronology in Humid Subtropical China and Its Linkages with the Pacific Decadal Oscillation

Atmosphere ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 247
Author(s):  
Zhipeng Dong ◽  
Dai Chen ◽  
Jianhua Du ◽  
Guang Yang ◽  
Maowei Bai ◽  
...  
Keyword(s):  
Tree Ring ◽  
Tree Rings ◽  
Pacific Decadal Oscillation ◽  
Asian Summer Monsoon ◽  
Growing Season ◽  
Subtropical China ◽  
Tree Ring Chronology ◽  
The Pacific ◽  
The World ◽  
Asian Summer

Humid subtropical China is an “oasis” relative to other dry subtropics of the world due to the prevailing of the East Asian summer monsoon (EASM). Although many long climate sensitive tree-rings have been published to understand the historical climate change over various regions in China, long tree-ring chronologies in humid subtropical China are rare due to the difficulty to find old growth trees. This study established a tree-ring chronology spanning from 1776 to 2016 from Cryptomeria fortunei Hooibrenk ex Otto et Dietr in Liancheng area of humid subtropical China, which is also currently the longest chronology in Fujian province. Similar to the climate-growth relationships in neighboring regions, our tree-ring chronology is limited by cold temperature in winter and spring and drought in summer. In addition, a drought stress before the growing season also played a role in limiting the growth of our tree rings. Our climate sensitive tree rings showed different correlations with the Pacific Decadal Oscillation (PDO) in different periods, possibly via modulation of the EASM.

Stable Isotopes in Tree Rings: Inferring Physiological, Climatic and Environmental Responses

2020 ◽  
Author(s):  
Rolf Siegwolf ◽  
Renée Brooks ◽  
John Roden ◽  
Matthias Saurer
Keyword(s):  
Stable Isotopes ◽  
Organic Matter ◽  
Tree Ring ◽  
Tree Rings ◽  
Isotope Fractionation ◽  
Ice Cores ◽  
Forest Growth ◽  
Tree Physiology ◽  
Growth Increments ◽  
Environmental Responses

<p>We are editing a new book in the Springer Tree Physiology Series entitled “<em><strong>Stable Isotopes in Tree Rings: Inferring Physiological, Climatic and Environmental Responses</strong></em>” due out in 2020. Because trees produce annual growth increments that can be precisely dated, annual and interannual variations in tree ring width and stable carbon, oxygen and hydrogen isotopes provide detailed records of past physiological responses to biotic and abiotic impacts over many decades and centuries. In contrast to non-living chronologies (ice cores, stalagmites etc.), trees modify base physical inputs in response to local microclimates through their physiological response to light, temperature, humidity, water availability, CO<sub>2</sub> and nutrients. Although this can make interpretation of isotopic variation in organic matter more complicated, it also means that these proxies can provide a wealth of additional information. Thus, an understanding of the combined physical and biological drivers of isotope fractionation in tree rings is crucial for paleoclimate interpretation. In addition, tree rings and stable isotopes contained therein integrate dynamic environmental, phenological and developmental variation that can be used to study present organism function and recent anthropogenic influences apart from their use as proxies for conditions in the distant past. The last few decades have seen tremendous progress in understanding the mechanisms by which tree physiology modifies stable isotope fractionation in organic matter.</p><p>This book will be the first to comprehensively cover the field of tree ring stable isotopes. This volume highlights how tree ring stable isotopes have been used to address a range of environmental issues from paleoclimatology to forest management, and anthropogenic impacts on forest growth. It evaluates strengths and weaknesses of isotope applications in tree rings. This book focuses on physiological mechanisms that influence isotopic signals and reflect environmental impacts. Each of the 25 chapters has been authored by leading experts providing the most recent developments in the area.</p>

scholarly journals Millennial minimum temperature variations in the Qilian Mountains, China: evidence from tree rings

2014 ◽  
Vol 10 (5) ◽  
pp. 1763-1778 ◽  
Author(s):  
Y. Zhang ◽  
X. M. Shao ◽  
Z.-Y. Yin ◽  
Y. Wang
Keyword(s):  
Tibetan Plateau ◽  
Tree Ring ◽  
Tree Rings ◽  
Minimum Temperature ◽  
Volcanic Eruptions ◽  
Qilian Mountains ◽  
Tree Ring Chronology ◽  
Northeastern Tibetan Plateau ◽  
Reconstructed Temperature ◽  
The Impact

Abstract. A 1343-year tree-ring chronology was developed from Qilian junipers in the central Qilian Mountains of the northeastern Tibetan Plateau (TP), China. The climatic implications of this chronology were investigated using simple correlation, partial correlation and response function analyses. The chronology was significantly positively correlated with temperature variables prior to and during the growing season, especially with monthly minimum temperature. Minimum temperature anomalies from January to August since AD 670 were then reconstructed based on the tree-ring chronology. The reconstruction explained 58% of the variance in the instrumental temperature records during the calibration period (1960–2012) and captured the variation patterns in minimum temperature at the annual to centennial timescales over the past millennium. The most recent 50 years were the warmest period, while 1690–1880 was the coldest period since AD 670. Comparisons with other temperature series from neighbouring regions and for the Northern Hemisphere as a whole supported the validity of our reconstruction and suggested that it provided a good regional representation of temperature change in the northeastern Tibetan Plateau. The results of wavelet analysis showed the occurrence of significant quasi-periodic patterns at a number of recurring periods (2–4, 40–50, and 90–170 years), which were consistent with those associated with El Niño–Southern Oscillation (ENSO), Pacific Decadal Oscillation (PDO) and solar activity. The comparison between the reconstructed temperature and the index of tropical volcanic radiative forcing indicated that some cold events recorded by tree rings may be due to the impact of tropical volcanic eruptions.

scholarly journals Tree Rings and the Chronology of Ancient Egypt

Radiocarbon ◽  
2014 ◽  
Vol 56 (04) ◽  
pp. S85-S92
Author(s):  
Pearce Paul Creasman
Keyword(s):  
Tree Ring ◽  
Tree Rings ◽  
Radiocarbon Dating ◽  
Ancient Egypt ◽  
Fundamental Aspect ◽  
Potential Solution ◽  
Tree Ring Chronology ◽  
Ancient Egyptian ◽  
Egyptian History

A fundamental aspect of ancient Egyptian history remains unresolved: chronology. Egyptologists (and researchers in related fields that synchronize their studies with Egypt) currently rely on a variety of insufficiently precise methodologies (king lists, radiocarbon dating, etc.) from which to derive seemingly “absolute” dates. The need for genuine precision has been recognized for a century, as has the potential solution: dendrochronology. This manuscript presents a case for further progress toward the construction of a tree-ring chronology for ancient Egypt.

Environment and paleoecology of a 12 ka mid-North American Younger Dryas forest chronicled in tree rings

2008 ◽  
Vol 70 (3) ◽  
pp. 433-441 ◽  
Author(s):  
Irina P. Panyushkina ◽  
Steven W. Leavitt ◽  
Todd A. Thompson ◽  
Allan F. Schneider ◽  
Todd Lange
Keyword(s):  
Tree Ring ◽  
Lake Michigan ◽  
Black Spruce ◽  
Ice Sheet ◽  
Younger Dryas ◽  
Laurentide Ice Sheet ◽  
Tree Ring Chronology ◽  
Water And Sediment ◽  
Ice Floes ◽  
Insight Into

AbstractUntil now, availability of wood from the Younger Dryas abrupt cooling event (YDE) in N. America ca. 12.9 to 11.6 ka has been insufficient to develop high-resolution chronologies for refining our understanding of YDE conditions. Here we present a multi-proxy tree-ring chronology (ring widths, “events” evidenced by microanatomy and macro features, stable isotopes) from a buried black spruce forest in the Great Lakes area (Liverpool East site), spanning 116 yr at ca. 12,000 cal yr BP. During this largely cold and wet period, the proxies convey a coherent and precise forest history including frost events, tilting, drowning and burial in estuarine sands as the Laurentide Ice Sheet deteriorated. In the middle of the period, a short mild interval appears to have launched the final and largest episode of tree recruitment. Ultimately the tops of the trees were sheared off after death, perhaps by wind-driven ice floes, culminating an interval of rising water and sediment deposition around the base of the trees. Although relative influences of the continental ice sheet and local effects from ancestral Lake Michigan are indeterminate, the tree-ring proxies provide important insight into environment and ecology of a N. American YDE boreal forest stand.

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