distanceLimitedPDSIZ,downLog-perpendicularDistance-dlsNumeric: warning
  in matrix(c(os.len, 0, 1), nr = 1): partial argument match of ‘nr’ to
  ‘nrow’
downLogs,numeric-missing: warning in matrix(c(xlim, ylim), nr = 2,
  byrow = TRUE, dimnames = list(c("x", "y"), c("min", "max"))): partial
  argument match of ‘nr’ to ‘nrow’
standingTrees,numeric-missing: warning in matrix(c(xlim, ylim), nr = 2,
  byrow = TRUE, dimnames = list(c("x", "y"), c("min", "max"))): partial
  argument match of ‘nr’ to ‘nrow’
.statsDownLogs: no visible binding for global variable ‘sd’
.statsDownLogs: no visible binding for global variable ‘var’
.statsStandingTrees: no visible binding for global variable ‘sd’
.statsStandingTrees: no visible binding for global variable ‘var’
getProxy: no visible global function definition for ‘getFromNamespace’
sampleLogs: no visible global function definition for ‘runif’
sampleTrees: no visible global function definition for ‘runif’
transparentColorBase: no visible global function definition for
  ‘colors’
transparentColorBase: no visible global function definition for
  ‘col2rgb’
transparentColorBase: no visible global function definition for ‘rgb’
wbProxy: no visible global function definition for ‘uniroot’
wbProxy: no visible global function definition for ‘nlminb’
antitheticSampling,MonteCarloSampling: no visible global function
  definition for ‘qt’
clipStemsToTract,downLogs-SpatialPolygons: no visible global function
  definition for ‘gIntersects’
clipStemsToTract,downLogs-SpatialPolygons: no visible global function
  definition for ‘gIntersection’
downLogs,data.frame-missing: no visible global function definition for
  ‘na.omit’
hist,monteSample: no visible global function definition for ‘par’
importanceSampling,list: no visible global function definition for
  ‘runif’
importanceSampling,list: no visible global function definition for ‘qt’
initialize,circularPlot: no visible global function definition for
  ‘runif’
initialize,downLog: no visible global function definition for ‘runif’
initialize,lineSegment: no visible global function definition for
  ‘runif’
initialize,standingTree: no visible global function definition for
  ‘runif’
izGrid,distanceLimitedMCIZ-Tract: no visible global function definition
  for ‘spline’
izGrid,matrix-Tract: no visible global function definition for
  ‘intersectExtent’
izGrid,omnibusPDSIZ-Tract: no visible global function definition for
  ‘spline’
izGridMirage,InclusionZone-mirageTract: no visible global function
  definition for ‘gIntersects’
izGridMirage,InclusionZone-mirageTract : mirageSection: no visible
  global function definition for ‘gIntersection’
monteBSSample,montePop: no visible global function definition for ‘var’
monteNTSample,montePop: no visible global function definition for ‘qt’
monteNTSample,montePop: no visible global function definition for ‘var’
plot,ArealSampling-missing: no visible global function definition for
  ‘points’
plot,Stem-missing: no visible global function definition for ‘points’
plot,mcsContainer-missing: no visible global function definition for
  ‘abline’
sampSurf,izContainer-Tract: no visible binding for global variable
  ‘var’
standingTree,data.frame: no visible global function definition for
  ‘spline’
standingTrees,data.frame-missing: no visible global function definition
  for ‘na.omit’
summary,izContainer: no visible global function definition for ‘var’
summary,izContainer: no visible global function definition for ‘sd’
taperInterpolate,list: no visible global function definition for
  ‘spline’
Undefined global functions or variables:
  abline col2rgb colors gIntersection gIntersects getFromNamespace
  intersectExtent na.omit nlminb par points qt rgb runif sd spline
  uniroot var
Consider adding
  importFrom("grDevices", "col2rgb", "colors", "rgb")
  importFrom("graphics", "abline", "par", "points")
  importFrom("stats", "na.omit", "nlminb", "qt", "runif", "sd", "spline",
             "uniroot", "var")
  importFrom("utils", "getFromNamespace")
to your NAMESPACE file.