# boundaryLineALL: Overal function for Black and Abrams 2003 method or "pure... In TRADER: Tree Ring Analysis of Disturbance Events in R

 boundaryLineALL R Documentation

## Overal function for Black and Abrams 2003 method or "pure boundary line".

### Description

Boundary-line method scales the percent growth change of Nowacki & Abrams (1997).

### Usage

``````boundaryLineALL(data, releases = NULL, m1 = 10, m2 = 10, boundary = NULL,
buffer = 2, criteria = 0.2, criteria2 = 0.5, segment = 0.5,
segment2 = 0.5, drawing = TRUE, gfun = mean,
length = 2, notop = 10, notop2 = 10, storedev = pdf, prefix = NULL, ...)
``````

### Arguments

 `data` A data.frame with series as columns and years as rows such as that produced by read.* function of dplR . `releases` Optional parameter usable for precomputed releases. `m1` Determines the number of years to be averaged (including target year) for period prior the potential releas. `m2` Determines the number of years to be averaged (including target year) for period prior the potential releas. `boundary` Boundary line function of one argument, eg. `boundary=function(x) {5.0067*exp(-0.664*x)}` `buffer` Number of years determining how close to one another two releases can be. `criteria` Threshold for detection of moderate release `criteria2` Threshold for detection of major release. `segment` Determines length of the segment on which prior growth will be divided `segment2` Determines length of the segment on which first mm of prior growth will be divided. `prefix` Prefix of saved files. `drawing` If TRUE, graphical outputs for individual trees. `gfun` Determines if M1 and M2 values are mean or median for selected period. `length` Determines how many years have to be given critera exceeded to be considered as release. `notop` Number of highest data points for fitting the boundary line. `notop2` Number of highest data points for fitting the boundary line in the segments for first mm. `storedev` Format for saving the graphical outputs, eg. pdf or jpeg. `...` Further arguments pasted to plot function.

### Details

Boundary-line method scales the percent growth change of Nowacki & Abrams (1997) according to growth rate prior to disturbance. In their example, Black & Abrams (2003) defined moderate and major releases as those falling within 20-49.9%, and 50-100% of the boundary line, respectively. Advantage of the boundary-line is standardization, which takes into account the relationships among tree age, size, and canopy class determining radial growth rate (Black et al. 2004). On the downside, Black et al. (2009) suggest approximately 50000 ring width measurements is necessary for boundary line determination for a given species (Black et al. 2009).

### Value

Write many tables and figures in the current directory.

Check reference.

### Author(s)

Pavel Fibich <pavel.fibich@prf.jcu.cz>, Jan Altman <altman.jan@gmail.com>, Tuomas Aakala <tuomas.aakala@helsinki.fi>, Jiri Dolezal <jiriddolezal@gmail.com>

### References

Black, B.A. & Abrams, M.D. (2003) Use of boundary-line growth patterns as a basis for dendroecological release criteria. Ecological Applications, 13, 1733-1749.
Black, B.A., Abrams, M.D., Gagen, M., Daniels, L.D., Kipfmueller, K.F., Speer, J.H. & Anchukaitis, K.J. (2004) Development and application of boundary-line release criteria. Dendrochronologia, 22, 31-42.
Black, B.A., Abrams, M.D., Rentch, J.S. & Gould, P.J. (2009) Properties of boundary-line release criteria in North American tree species. Annals of Forest Science, 66.

`noblabrams`, `doAll`

### Examples

``````data(relData)
boundaryLineALL(relData1)
boundaryLineALL(relData1,length=3,buffer=4,storedev=pdf,
boundary=function(x) {5.0067*exp(-0.664*x)} )
``````

TRADER documentation built on May 29, 2024, 2:35 a.m.