R/otters.R

In SDaA: Sampling: Design and Analysis

#' Otters Data
#' 
#' Data on number of holts (dens) in Shetland, United Kingdom used
#' in Kruuk et al. (1989). (Data courtesy of Hans Kruuk).
#' @name otters
#' @docType data
#' @format Data frame with the following three variables: 
#' \describe{
#'   \item{section}{coastline section}
#'   \item{habitat}{type of habitat (stratum)}
#'   \item{holts}{number of holts}
#' }
#' @source Kruuk, H.A. et al. (1989). An estimate of numbers and habitat
#'   preferences  of otters \emph{Lutra lutra} in Shetland, UK., 
#'   Biological Conservation, 49: 241--254.
#' @references Lohr (1999). Sampling: Design and Analysis, Duxbury, p. TODO and
#'   443.
"otters"