R/BullTroutRML1.R

In FSAdata: Data to Support Fish Stock Assessment ('FSA') Package

#' @title Lengths and weights for Bull Trout from two Rocky Mountain lakes and two eras.
#' 
#' @description Lengths and weights of Bull Trout (\emph{Salvelinus confluentis}) from two Rocky Mountain lakes in Alberta, CAN and two eras.
#' 
#' @note The historical (1977-1980) era samples were from before restrictive sportfishing regulatory regimes were implemented (in the 1990s) that led to changes in abundance and population structure of bull trout.
#' 
#' @name BullTroutRML1
#' 
#' @docType data
#' 
#' @format A data frame with 137 observations on the following 3 variables:
#'  \describe{
#'    \item{fl}{Fork length (mm)}
#'    \item{mass}{Wet mass (g)}
#'    \item{era}{Era of collection (\code{1977-79} and \code{2001})}
#'  }
#' 
#' @section Topic(s):
#'  \itemize{
#'    \item Weight-Length
#'    \item Length Frequency
#'  }
#' 
#' @concept Weight-Length
#' @concept Length Frequency
#' 
#' @source From (approximately) Figure 2 of Parker, B.R., D.W. Schindler, F.M. Wilhelm, and D.B. Donald. 2007. Bull trout population responses to reductions in angler effort and retention limits. North American Journal of Fisheries Management 27:848-859. \href{https://raw.githubusercontent.com/fishR-Core-Team/FSAdata/main/data-raw/BullTroutRML1.csv}{CSV file}
#' 
#' @keywords datasets
#' 
#' @examples
#' data(BullTroutRML1)
#' str(BullTroutRML1)
#' head(BullTroutRML1)
#' op <- par(mfrow=c(1,2),pch=19)
#' plot(mass~fl,data=BullTroutRML1,subset=era=="1977-79",main="1977-79")
#' plot(mass~fl,data=BullTroutRML1,subset=era=="2001",main="2001")
#' par(op)
#' 
NULL