Comparing 30-year diameter censuses and tree-ring chronologies in natural old-growth Cryptomeria japonica forest on Yakushima Island, Japan

2015 ◽  
Vol 20 (2) ◽  
pp. 255-262 ◽  
Author(s):  
Shizu Itaka ◽  
Shigejiro Yoshida ◽  
Nobuya Mizoue ◽  
Tetsuji Ota ◽  
Atsushi Takashima ◽  
...  
Keyword(s):  
Tree Ring ◽  
Cryptomeria Japonica ◽  
Old Growth ◽  
Yakushima Island

scholarly journals Estimation of Growth Rates Based on Tree-ring Analysis of Cryptomeria japonica on Yakushima Island, Japan

2013 ◽  
Vol 19 (1) ◽  
pp. 1-7
Author(s):  
Shizu Itaka ◽  
Shigejiro Yoshida ◽  
Nobuya Mizoue ◽  
Tetsuji Ota ◽  
Atsushi Takashima ◽  
...  
Keyword(s):  
Tree Ring ◽  
Growth Rates ◽  
Cryptomeria Japonica ◽  
Yakushima Island ◽  
Tree Ring Analysis ◽  
Ring Analysis

scholarly journals Identifying Dendroecological Growth Releases in Old-growth Cryptomeria japonica Forest on Yakushima Island, Japan

2013 ◽  
Vol 19 (1) ◽  
pp. 9-16
Author(s):  
Shizu Itaka ◽  
Shigejiro Yoshida ◽  
Nobuya Mizoue ◽  
Tetsuji Ota ◽  
Atsushi Takashima ◽  
...  
Keyword(s):  
Cryptomeria Japonica ◽  
Old Growth ◽  
Yakushima Island

Historical logging and current successional status of old-growth Cryptomeria japonica forest on Yakushima Island

2017 ◽  
Vol 22 (2) ◽  
pp. 108-117 ◽  
Author(s):  
Atsushi Takashima ◽  
Atsushi Kume ◽  
Shigejiro Yoshida ◽  
Nobuya Mizoue ◽  
Takuhiko Murakami
Keyword(s):  
Cryptomeria Japonica ◽  
Old Growth ◽  
Yakushima Island ◽  
Successional Status

The dendroecology and climatic impacts for old-growth white pine and hemlock on the extreme slopes of the Berkshire Hills, Massachusetts, U.S.A.

2000 ◽  
Vol 78 (7) ◽  
pp. 851-861 ◽  
Author(s):  
Marc D Abrams ◽  
Saskia van de Gevel ◽  
Ryan C Dodson ◽  
Carolyn A Copenheaver
Keyword(s):  
United States ◽  
20Th Century ◽  
Tree Ring ◽  
Palmer Drought Severity Index ◽  
Severity Index ◽  
Drought Severity ◽  
White Pine ◽  
Old Growth ◽  
Hardwood Species ◽  
Drought Severity Index

Dendrochronological techniques were used to investigate the dynamics of an old-growth forest on the extreme slope (65%) at Ice Glen Natural Area in southwestern Massachusetts. The site represented a rare opportunity to study the disturbance history, successional development, and responses to climatic variation of an old-growth hemlock (Tsuga canadensis (L.) Carr) - white pine (Pinus strobus L.) - northern hardwood forest in the northeastern United States. Hemlock is the oldest species in the forest, with maximum tree ages of 305-321 years. The maximum ages for white pine and several hardwood species are 170-200 years. There was continuous recruitment of hemlock trees from 1677 to 1948. All of the existing white pine was recruited in the period between 1800 and 1880, forming an unevenly aged population within an unevenly aged, old-growth hemlock canopy. This was associated with large increases in the Master tree-ring chronologies, indicative of major stand-wide disturbances, for both hemlock and white pine. Nearly all of the hardwood species were also recruited between 1800 and 1880. After 1900, there was a dramatic decline in recruitment for all species, including hemlock, probably as a result of intensive deer browsing. White pine and hemlock tree-ring growth during the 20th century was positively correlated with the annual Palmer drought severity index (r = 0.61 and 0.39, respectively). This included reduced growth during periods of low Palmer drought severity index values, the drought years of 1895-1922, and dramatic increases during periods of high Palmer drought severity index values in the 1970s and 1990s. Significant positive and negative correlations of certain monthly Palmer drought severity index values with 20th century tree-ring chronologies also exist for white pine and hemlock using response function analysis. The results of this study suggest that old-growth forests on extreme sites in the eastern United States may be particularly sensitive to direct and indirect allogenic factors and climatic variations and represent an important resource for studying long-term ecological and climatic history.Key words: age structure, radial growth analysis, disturbance, climate, fire, tree rings.

Recent growth increases in old-growth longleaf pine

1993 ◽  
Vol 23 (5) ◽  
pp. 846-853 ◽  
Author(s):  
D.C. West ◽  
T.W. Doyle ◽  
M.L. Tharp ◽  
J.J. Beauchamp ◽  
W.J. Platt ◽  
...  
Keyword(s):  
Tree Ring ◽  
Longleaf Pine ◽  
Biomass Accumulation ◽  
Severity Index ◽  
Drought Severity ◽  
Tree Ring Chronology ◽  
Annual Increment ◽  
Old Growth ◽  
Tree Ring Data ◽  
Old Trees

Longleaf pine (Pinuspalustris Mill.) tree-ring data were obtained from an old-growth stand located in Thomas County, Georgia. The tree-ring chronology from the pine stand is composed of a collection of cores extracted from 26 trees ranging in age from approximately 100 to 400 years. These cores were prepared, dated, and measured, and the resulting data were examined with dendrochronological and statistical techniques. Beginning in approximately 1950 and continuing to the present, annual increments of all age classes examined in this study have increased, resulting in an average annual ring increment approximately 40% greater in 1987 than in 1950. When compared with expected annual increment, the increase for 100- to 150-year-old trees is approximately 45%, while the increase for 200- to 400-year-old trees is approximately 35%. In terms of stand-level aboveground biomass accumulation, the increased growth has resulted in approximately 5% more biomass than expected. The increased growth cannot be explained by disturbance; stand history; or trends in precipitation, temperature, or Palmer drought severity index over the last 57 years. Increased atmospheric CO2 is a possible explanation for initiation of the observed trend, while SOx and NOx may be augmenting continuation of this phenomenon.

Intra-annual variability in isotopic and total nitrogen in tree rings of old growth Sitka spruce from coastal British Columbia

Botany ◽  
2018 ◽  
Vol 96 (12) ◽  
pp. 851-857 ◽  
Author(s):  
T.E. Reimchen ◽  
Estelle Arbellay
Keyword(s):  
British Columbia ◽  
Tree Ring ◽  
Environmental Changes ◽  
Sitka Spruce ◽  
Picea Sitchensis ◽  
Wilcoxon Test ◽  
Old Growth ◽  
Ecological Processes ◽  
Annual Variability ◽  
Coastal British Columbia

Tree-ring studies using increment cores have increasingly measured elemental (N) and isotopic (δ15N) nitrogen values to evaluate environmental changes in the nitrogen cycle. The paucity of nitrogen in wood has constrained tree-ring analyses to annual resolution. Based on 77 rings and 310 sub-rings, we provide evidence for substantial intra-annual variability in N and δ15N values in the heartwood of 11 geographically widely separated, old growth Sitka spruce [Picea sitchensis (Bong.) Carrière] trees from coastal British Columbia. The range of N and δ15N values within rings (intra-annual level) was on average equal to or up to seven-times the range among rings (inter-annual level). Most rings showed a seasonal reduction in N values from early to late growth and a corresponding increase to the early growth of the following season (P < 0.05 to 0.001, Mann–Whitney–Wilcoxon test). By contrast, intra-annual changes in δ15N values were highly variable among years and among trees, ranging from pronounced oscillations (4.0‰) to reasonable consistency. Our results allude to the potential importance of such intra-ring data for interpreting seasonal trends in nitrogen use and increasing understanding of ecological processes in the marine–terrestrial interface.

A long-term tree ring beech chronology from a high-elevation old-growth forest of Central Italy

2003 ◽  
Vol 21 (1) ◽  
pp. 13-22 ◽  
Author(s):  
G. Piovesan ◽  
M. Bernabei ◽  
A. Di Filippo ◽  
M. Romagnoli ◽  
B. Schirone
Keyword(s):  
Tree Ring ◽  
Central Italy ◽  
High Elevation ◽  
Old Growth ◽  
Old Growth Forest

scholarly journals Tree-Ring Dating Of Old-Growth Longleaf Pine (Pinus palustris Mill.) Logs From An Exposed Timber Crib Dam, Hope Mills, North Carolina, U.S.A

2009 ◽  
Vol 65 (1) ◽  
pp. 69-80 ◽  
Author(s):  
Saskia L. Van De Gevel ◽  
Justin L. Hart ◽  
Henri D. Grissino-Mayer ◽  
Kenneth W. Robinson
Keyword(s):  
North Carolina ◽  
Tree Ring ◽  
Longleaf Pine ◽  
Pinus Palustris ◽  
Old Growth
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