A Set of Tools for Calculating Spatial Synchrony Between Tree-Ring Chronologies.
The R Package: DendroSync
A Set of Tools for Calculating Spatial Synchrony Between Tree-Ring Chronologies.
General Description
Dendrosync is an R library that provides functions for the calculation and plotting of synchrony in the tree growth from tree-ring width chronologies (TRW index). It combines variance-covariance (VCOV) mixed modelling with functions that quantify the degree to which TRW chronologies contain a common temporal signal. It also implements temporal trends in spatial synchrony using a moving window. These methods can also be used with other kind of eacological variables that have temporal autocorrelation corrected.
Version 0.1.4
Depends: R (>= 3.1.2), nlme, ggplot2
Package Contents
The package contains different functions to evaluate synchrony in tree growth from tree-ring width chronologies. Each function is described in help files with clear examples. For a detailed description of the package visit: josugalday/r-stuff
Main functions:
dendro.varcov
: it calculates variance-covariance (VCOV) mixed modelsmod.table
: it provides a table to compare fitted variance-covariance (VCOV) mixed models by AIC, AICc, BICsync
: it calculates spatial synchrony from fitted variance-covariance mixed modelssync.plot
: it creates dot plots of within- and between-group synchronysync.trend
: it calculates temporal trends of spatial sinchronysync.trend.plot
: it creates a line chart showing temporal trends of spatial synchrony
Contact
For any problem please contact with Josu G Alday ([email protected]) or Victor Resco ([email protected])
Citation:
Alday JG; Shestakova TA, Resco de Dios V, Voltas J. (2018) DendroSync: An R package to unravel synchrony patterns in tree-ring networks. Dendrochronologia 47: 17-22.