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Callisia

Scripts for creating maps and performing niche modeling using R.

The general workflow is as follows:

  • callisiaMapping.R: importing taxon occurrence data into R, creating maps, creating custom shapefiles
  • callisiaLayerPrep.R: masking/clipping PRISM layers, looking for correlations between layers
  • callisiaNicheModeling.R: creating niche models using occurrence data and climate layers
  • callisiaNicheOverlap.R: assessing whether niche models for different taxa are distinct from each other
  • extraLayers.R: assesses BioClim correlations
  • layerAverage.R: averaging PRISM layers across 10 year intervals

There are a number of files and directories that are downloaded or created during this analysis. To perform all commands in layerPrep.R, you should download the BioClim layers and store them in a convenient place (note the paths for using these layers may need to be changed). Clipped layers are included in PastLayers/ and PresenceLayers for your convenience.