scholarly journals Detection and removal of disturbance trends in tree-ring series for dendroclimatology

2016 ◽  
Vol 46 (3) ◽  
pp. 387-401 ◽  
Author(s):  
Miloš Rydval ◽  
Daniel Druckenbrod ◽  
Kevin J. Anchukaitis ◽  
Rob Wilson
Keyword(s):  
Environmental History ◽  
Tree Ring ◽  
Regional Climate ◽  
Ring Width ◽  
Tree Ring Width ◽  
Climate Data ◽  
Climate Trends ◽  
Climate Signal ◽  
Maximum Latewood Density ◽  
Latewood Density

Nonclimatic disturbance events are an integral element in the history of forests. Although the identification of the occurrence and duration of such events may help to understand environmental history and landscape change, from a dendroclimatic perspective, disturbance can obscure the climate signal in tree rings. However, existing detrending methods are unable to remove disturbance trends without affecting the retention of long-term climate trends. Here, we address this issue by using a novel method for the detection and removal of disturbance events in tree-ring width data to assess their spatiotemporal occurrence in a network of Scots pine (Pinus sylvestris L.) trees from Scotland. Disturbance trends “superimposed” on the tree-ring record are removed before detrending and the climate signals in the precorrection and postcorrection chronologies are evaluated using regional climate data, proxy system model simulations, and maximum latewood density (MXD) data. Analysis of subregional chronologies from the West Highlands and the Cairngorms in the east reveals a higher intensity and more systematic disturbance history in the western subregion, likely a result of extensive timber exploitation. The method improves the climate signal in the two subregional chronologies, particularly in the more disturbed western sites. Our application of this method demonstrates that it is possible to minimise the effects of disturbance in tree-ring width chronologies to enhance the climate signal.

Separating the climatic signal from tree-ring width and maximum latewood density records

Trees ◽  
2006 ◽  
Vol 21 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Alexander V. Kirdyanov ◽  
Eugene A. Vaganov ◽  
Malcolm K. Hughes
Keyword(s):  
Tree Ring ◽  
Ring Width ◽  
Tree Ring Width ◽  
Maximum Latewood Density ◽  
Climatic Signal ◽  
Latewood Density

Maximum latewood density records of Great Basin Bristlecone pine (Pinus Longaeva) from the White Mountains, California

2021 ◽  
Author(s):  
Tom De Mil ◽  
Matthew Salzer ◽  
Charlotte Pearson ◽  
Valerie Trouet ◽  
Jan Van den Bulcke
Keyword(s):  
Tree Ring ◽  
Great Basin ◽  
Ring Width ◽  
Temperature Record ◽  
Tree Ring Width ◽  
Maximum Latewood Density ◽  
Latewood Density ◽  
Pinus Longaeva ◽  
Bristlecone Pine ◽  
Temperature Signal

<p>Great Basin Bristlecone pine (Pinus longaeva) is known for its longevity. The longest continuous tree-ring width chronology covers more than 9000 years. Tree-ring width of upper treeline bristlecone pine trees is influenced by summer temperature variability at decadal to centennial scales, but to infer a temperature signal on interannual scales, Maximum Latewood Density (MXD) is a better proxy. Here, we present a preliminary MXD chronology to investigate the temperature signal in upper treeline and lower elevation bristlecone pines. MXD was measured with an X-ray Computed Tomography toolchain in 24 dated cores,  with the oldest sample dating back to 776 CE. Ring and fibre angles were corrected and two MXD chronologies for different elevations were developed, which will be used to study climate-growth relationships and the effect of elevation on them. Future scanning will allow constructing a 5000+ year-long MXD chronology from upper treeline sites, which will provide an annual-resolution North American temperature record covering the mid-to-late Holocene.</p>

Tree-ring width and maximum latewood density at the North American tree line: parameters of climatic change

1992 ◽  
Vol 22 (9) ◽  
pp. 1290-1296 ◽  
Author(s):  
Rosanne D. D'Arrigo ◽  
Gordon C. Jacoby ◽  
Rosemary M. Free
Keyword(s):  
Climatic Change ◽  
Tree Ring ◽  
North American ◽  
Ring Width ◽  
Positive Temperature ◽  
Tree Line ◽  
Tree Ring Width ◽  
Maximum Latewood Density ◽  
Latewood Density ◽  
Instrumental Records

In remote subarctic North America, instrumental records are very short and sparsely distributed. Yet a long-term understanding of subarctic climate is critical to studies of global change. Annual tree-ring width and maximum latewood density are complementary, high-resolution parameters with different environmental and physiological controls that can be used to assess recent centuries of climatic change. In this paper we present a comparison of the different temperature information inferred from these parameters for white spruce (Piceaglauca (Moench) Voss), a dominant North American latitudinal tree line species. Ring-width and maximum latewood density chronologies (with a common period from 1720–1977) are shown for five sites along a widely spaced transect of the forest–tundra transition in northern Canada. The positive temperature response of maximum latewood density to year to year local temperatures is more consistent and covers a longer portion of the growing season than does that of ring width. Unlike density, the ring-width data show a preference for cold spring conditions. Some, but not all, of the ring-width and density series display increases during the recent century's large-scale climatic warming trend. It is concluded that both types of parameters are necessary for understanding changes in climate and forest dynamics at the northern tree line.

scholarly journals Different climate response of three tree ring proxies of Pinus sylvestris from the Eastern Carpathians, Romania

2020 ◽  
Author(s):  
Viorica Nagavciuc ◽  
Cătălin-Constantin Roibu ◽  
Monica Ionita ◽  
Andrei Mursa ◽  
Mihai-Gabriel Cotos ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Tree Ring ◽  
Ring Width ◽  
Maximum Temperature ◽  
Daily Maximum Temperature ◽  
Daily Maximum ◽  
Climate Data ◽  
Maximum Latewood Density ◽  
Latewood Density ◽  
Eastern Carpathians

<p>The aim of this study was to compare the climatic responses of three tree rings proxies: tree ring width (TRW),<br>maximum latewood density (MXD), and blue intensity (BI). For this study, 20 cores of Pinus sylvestris covering<br>the period 1886–2015 were extracted from living non-damaged trees from the Eastern Carpathian Mountains<br>(Romania). Each chronology was compared to monthly and daily climate data. All tree ring proxies had a<br>stronger correlation with the daily climate data compared to monthly data. The highest correlation coefficient<br>was obtained between the MXD chronology and daily maximum temperature over the period beginning with the<br>end of July and ending in the middle of September (r=0.64). The optimal intervals for the temperature signature<br>were 01 Aug – 24 Sept for the MXD chronology, 05 Aug – 25 Aug for the BI chronology, and both 16 Nov<br>of the previous year – 16 March of the current year and 15 Apr – 05 May for the TRW chronology. The results<br>from our study indicate that MXD can be used as a proxy indicator for summer maximum temperature, while<br>TRW can be used as a proxy indicator for just March maximum temperature. The weak and unstable relationship<br>between BI and maximum temperature indicates that BI is not a good proxy indicator for climate reconstructions<br>over the analysed region.</p>

scholarly journals Chronology Development and Climate Response Analysis of Schrenk Spruce (Picea Schrenkiana) Tree-Ring Parameters in the Urumqi River Basin, China

2010 ◽  
Vol 36 (-1) ◽  
pp. 17-22 ◽  
Author(s):  
Feng Chen ◽  
Yujiang Yuan ◽  
Wenshou Wei ◽  
Shulong Yu ◽  
Yang Li ◽  
...  
Keyword(s):  
River Basin ◽  
Tree Ring ◽  
Ring Width ◽  
Response Analysis ◽  
Climate Response ◽  
Climate Data ◽  
Picea Schrenkiana ◽  
Maximum Latewood Density ◽  
Latewood Density ◽  
Earlywood Width

Chronology Development and Climate Response Analysis of Schrenk Spruce (Picea Schrenkiana) Tree-Ring Parameters in the Urumqi River Basin, ChinaSeven different tree-ring parameters (total tree-ring width, earlywood width, latewood width, maximum latewood density, minimum earlywood density, average earlywood density, and average latewood density) were obtained from Schrenk spruce in the Urumqi River Basin, China. The chronologies were analyzed individually and then compared with each other. The relationships between the different tree-ring parameters and climate data (Daxigou) are also presented. Earlywood-related parameters (earlywood width, minimum density, and earlywood density) were more sensitive to climate than those of latewood. Temperature (July) was found to be the most strongly related to the earlywood density. Based on the results of climate response analysis, the potential of tree-ring chronologies from this species to provide climate reconstructions in the Urumqi River Basin has been established. This study demonstrates that the use of tree-ring density data can increase the climate information obtained from tree-ring and should lead to improved paleoclimate reconstructions in Central Asian.

Is temperature still the most limiting factor for growth in northern boreal forests?

The Holocene ◽  
2021 ◽  
pp. 095968362110116
Author(s):  
Jeroen DM Schreel
Keyword(s):  
Tree Ring ◽  
Boreal Forests ◽  
Ring Width ◽  
Temperature Fluctuations ◽  
Limiting Factor ◽  
Tree Ring Width ◽  
Climate Reconstructions ◽  
Latewood Density

Over the last few decades – at a range of northern sites – changes in tree-ring width and latewood density have not followed mean summertime temperature fluctuations. This discrepancy sharply contrasts an earlier correlation between those variables. As the origin of this inconsistency has not been fully deciphered, questions have emerged regarding the use of tree-ring width and latewood density as a proxy in dendrochronological climate reconstructions. I suggest that temperature is no longer the most limiting factor in certain boreal areas, which might explain the observed divergence.

A Preliminary Reconstruction of Rainfall in North-Central China since A.D. 1600 from Tree-Ring Density and Width

1994 ◽  
Vol 42 (1) ◽  
pp. 88-99 ◽  
Author(s):  
Malcolm K. Hughes ◽  
Wu Xiangding ◽  
Shao Xuemei ◽  
Gregg M. Garfin
Keyword(s):  
Tree Ring ◽  
Spectral Power ◽  
Singular Spectrum Analysis ◽  
Ring Width ◽  
Central China ◽  
North Central ◽  
Ring Density ◽  
Maximum Latewood Density ◽  
Documentary Sources ◽  
Latewood Density

AbstractMay-June (MJ) and April-July (AJ) precipitation at Huashan in north-central China has been reconstructed for the period A.D. 1600 to 1988 using tree-ring density and width fromPinus armandii. MJ precipitation (based on ring width and maximum latewood density) calibrated and cross-validated against local instrumental data more strongly than AJ precipitation (based only on ring width). A major drought was reconstructed for the mid- and late 1920s, confirmed by local documentary sources. This drought (culminating in 1929) was the most severe of the 389-yr period for MJ and second most severe for AJ, after an event ending in 1683. Neither reconstruction shows much spectral power at frequencies lower than 1 in 10 yr, but both show concentrations of power between 2.1 and 2.7 yr and 3.5 to 9 yr. There are significant correlations between the two reconstructions and a regional dryness/wetness index (DW) based on documentary sources, particularly at high frequencies. These correlations are focused in the 7.6- to 7.3-, 3.8- to 3.6-, and 2.5-yr periods. Using singular spectrum analysis, quasiperiodic behavior with a period close to 7.2 yr was identified in the MJ precipitation reconstruction and in the DW index based on documents.

Chronology development and climate response analysis of different New Zealand pink pine (Halocarpus biformis) tree-ring parameters

1998 ◽  
Vol 28 (4) ◽  
pp. 566-573 ◽  
Author(s):  
Limin Xiong ◽  
Naoki Okada ◽  
Takeshi Fujiwara ◽  
Sadaaki Ohta ◽  
Jonathan G Palmer
Keyword(s):  
New Zealand ◽  
Tree Ring ◽  
Ring Width ◽  
Response Analysis ◽  
Data Series ◽  
Climate Response ◽  
Climate Data ◽  
Local Climate ◽  
Latewood Density ◽  
Earlywood Width

Seven different tree-ring parameters (total ring width, earlywood width, latewood width, maximum latewood density, minimum earlywood density, average earlywood density, and average latewood density) were obtained from pink pine (Halocarpus biformis Hook.) at one chronology site in New Zealand (NZ). The chronologies were analyzed individually and then compared with each other. The relationships between the different tree-ring parameters and climate data (NZ average and local climate data) are also presented. There were more significant climate response functions in the NZ national average climate series than that of local climate data series. Earlywood-related parameters (earlywood width, minimum density, and average earlywood density) were more sensitive to climate than those of latewood. Temperature during the NZ growth season (November-March) was found to be the most strongly related to tree growth. This study demonstrates that the use of both ring width and ring density data can increase the climate information obtained from ring widths and should lead to improved paleoclimate reconstructions in New Zealand.

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