Package check result: ERROR

Check: examples, Result: ERROR
  Running examples in ‘BiodiversityR-Ex.R’ failed
  The error most likely occurred in:
  
  > base::assign(".ptime", proc.time(), pos = "CheckExEnv")
  > ### Name: spatialsample
  > ### Title: Spatial Sampling within a Polygon
  > ### Aliases: spatialsample
  > ### Keywords: multivariate
  > 
  > ### ** Examples
  > 
  > library(splancs)
  Error in library(splancs) : there is no package called ‘splancs’
  Execution halted