Software
Programs for tree-ring analysis
Citation:
Gavin, D.G., B. Beckage, and B. Osborn. 2008. Forest dynamics and the
growth decline of red spruce and sugar maple on Bolton Mountain,
Vermont: a comparison of modeling methods. Canadian Journal of Forest
Research 38: 2635-2649.
Each file is a distinct function. In general each function provides
output needed for the next function. Descriptions are included within
each function.
[coming soon!]
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K1D Version 1
Last update: February 2007
A
program to analyze the dependence of two or more time event records
using the Ripley K-function on one dimension. Examines multiple
hypotheses regarding the form of relationship between events.
User's Guide (.pdf)
Mac OS X (.zip)
Windows (.zip)
[Example data file] [Example intensity file]
RealBASIC Project
file
(.zip)
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Studies
that have implemented this software include:
- Gavin, D.G., F.S.
Hu, K.P. Lertzman and P. Corbett. 2006. Weak climatic control of forest
fire history during the late Holocene. Ecology 87:1722-1732.
- Hu,
F. S., L.B. Brubaker, D.G. Gavin, P.E. Higuera, J.A. Lynch, T.S. Rupp,
and W. Tinner. 2006. How climate and vegetation influence the fire
regime of the Alaskan Boreal biome: The Holocene perspective.
Mitigation and Adaptation Strategies for Global Change 11:829-846.
- Bigler, C., D.G. Gavin, C. Gunning and T.T. Veblen. 2007. Drought induces lagged tree
mortality in a subalpine forest in the Rocky Mountains. Oikos
116:1983-1994.
- Schoennagel, T.,
T.T. Veblen, D. Kulakowski, and A. Holz. 2007. Multidecadal climate
variability and interactions among Pacific and Atlantic sea surface
temperature anomalies affect subalpine fire occurrence, western
Colorado (USA). Ecology. In press.
- Long, C.J.,
Whitlock, C., and Bartlein, P.J. 2007. Holocene vegetation and fire
history of the Coast Range, western Oregon, USA. The Holocene
17:917-926.
- Ali, A.
A., C. Carcaillet, and Y. Bergeron. 2009. Long-term fire frequency
variability in the eastern Canadian boreal forest: the influences of
climate vs. local factors. Global Change Biology 15:1230-1241.
- Carcaillet,
C., A. A. Ali, O. Blarquez, A. Genries, B. Mourier, and L. Bremond.
2009. Spatial variability of fire history in subalpine forests: From
natural to cultural regimes. Ecoscience 16:1-12.
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AET Calculator
Last update: March 2007
A
program for computing the annual climatic water balance using the
modified Thornthwaite method.
User's Guide
(.pdf)
Mac OS X
(.zip)
Windows
(.zip)
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Example
input data:
AET Calculator; R Code
This is the same code as used in the stand-alone program used above,
however, it uses DAILY data and computes variables based on a daily
time step. Thus, it is more realistic, though it applies
to daily data relationships that were developed for monthly data. The
effect of this has not been explored. Knowledge of R
language is needed.
Program file (last update: March 2009): AET_calculator.txt
Example data file: BTV_HCN_DAILY.csv
GDD Calculator; R Code
Computes accumulated growing degree-days using daily
climate data and the Baskerville-Emin sine-curve method. Example
input data same as above.
Program file (last update: March 2009): GDD_calculator.txt
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Charster; version 0.8.3
Last update: June 2006
A
program for the exploratory analysis and archiving of lake sediment
charcoal records.
More sophisticated analyses are implemented in the
next-generation software by Phil Higuera: http://CharAnalysis.googlepages.com.
See the User's Guide for a comparison of these programs.
Bug list to be addressed
at some time in 2008.
User's
Guide
(HTML)
Max OS X
(.sit;
requires Stuffit
Expander X)
Windows
(.zip)
Example raw data
file
for import (.txt)
Example Charster file
(.zip) Installation
notes (esp. for Windows users). |
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