R/WhitefishLC.R
WhitefishLC.Rd
Assigned ages from two readers on three structures for Lake Whitefish (Coregonus clupeaformis) from Lake Champlain in 2009.
A data frame with 151 observations on the following 11 variables:
A unique fish identification number
Total length (in mm)
Assessed age from scales by first reader
Assessed age from scales by second reader
Consensus age from scales by both reader
Assessed age from fin rays by first reader
Assessed age from fin rays by second reader
Consensus age from fin rays by both reader
Assessed age from otoliths by first reader
Assessed age from otoliths by second reader
Consensus age from otoliths by both reader
Data from Herbst, S.J. and J.E. Marsden. 2011. Comparison of precision and bias of scale, fin ray, and otolith age estimates for lake whitefish (Coregonus clupeaformis) in Lake Champlain. Journal of Great Lakes Research. 37:386-389. Contributed by Seth Herbst. Do not use for other than educational purposes without permission from the author. [Was (is?) from http://www.uvm.edu/rsenr/emarsden/documents/Herbst%20and%20Marsden%20whitefish%20age%20structure%20comparison.pdf.]
Age
Ageing Error
Precision
Bias
Age Comparisons
Used in ageBias
and agePrecision
examples.
str(WhitefishLC)#> 'data.frame': 151 obs. of 11 variables: #> $ fishID : int 1 2 3 4 5 6 7 8 9 10 ... #> $ tl : int 345 334 348 300 330 316 508 475 340 173 ... #> $ scale1 : int 3 4 7 4 3 4 6 4 3 1 ... #> $ scale2 : int 3 3 5 3 3 4 7 5 3 1 ... #> $ scaleC : int 3 4 6 4 3 4 7 5 3 1 ... #> $ finray1 : int 3 3 3 3 4 2 6 9 2 2 ... #> $ finray2 : int 3 3 3 2 3 3 6 9 3 1 ... #> $ finrayC : int 3 3 3 3 4 3 6 9 3 1 ... #> $ otolith1: int 3 3 3 3 3 6 9 11 3 1 ... #> $ otolith2: int 3 3 3 3 3 5 10 12 4 1 ... #> $ otolithC: int 3 3 3 3 3 6 10 11 4 1 ...head(WhitefishLC)#> fishID tl scale1 scale2 scaleC finray1 finray2 finrayC otolith1 otolith2 #> 1 1 345 3 3 3 3 3 3 3 3 #> 2 2 334 4 3 4 3 3 3 3 3 #> 3 3 348 7 5 6 3 3 3 3 3 #> 4 4 300 4 3 4 3 2 3 3 3 #> 5 5 330 3 3 3 4 3 4 3 3 #> 6 6 316 4 4 4 2 3 3 6 5 #> otolithC #> 1 3 #> 2 3 #> 3 3 #> 4 3 #> 5 3 #> 6 6