Cutoffs for the Gabelhouse five-cell length categories for a variety of species.
A data frame of 58 observations on the following 11 variables:
Species name.
Stock length in inches.
Quality length in inches.
Preferred length in inches.
Memorable length in inches.
Trophy length in inches.
Stock length in cm.
Quality length in cm.
Preferred length in cm.
Memorable length in cm.
Trophy length in cm.
Original summary table from Dr. Michael Hansen, University of Wisconsin-Stevens Point. Additional species have been added by the package author from the literature.
Size structure
Proportional size structure
Relative stock density
Proportional stock density
6-Size Structure.
Ogle, D.H. 2016. Introductory Fisheries Analyses with R. Chapman & Hall/CRC, Boca Raton, FL.
str(PSDlit)#> 'data.frame': 63 obs. of 11 variables: #> $ species : Factor w/ 63 levels "Arctic Grayling",..: 1 2 3 4 5 6 7 8 10 11 ... #> $ stock.in : num 8 11.8 11 6 15.8 ... #> $ quality.in : num 12 21.2 18 9 28.2 ... #> $ preferred.in: num 16 26.8 24 12 35.5 ... #> $ memorable.in: num 20 35 30 15 46.5 12 35 10 NA NA ... #> $ trophy.in : num 22 43.8 37 18 58.2 ... #> $ stock.cm : num 20 30 28 15 40 13 30 8 20 13 ... #> $ quality.cm : int 30 54 46 23 72 20 51 15 33 20 ... #> $ preferred.cm: int 40 68 61 30 90 25 76 20 NA NA ... #> $ memorable.cm: int 50 89 76 39 118 30 89 25 NA NA ... #> $ trophy.cm : num 55 111 94 46 148 38 114 30 NA NA ...head(PSDlit)#> species stock.in quality.in preferred.in memorable.in trophy.in #> 1 Arctic Grayling 8.00 12.00 16.00 20.0 22.00 #> 2 Bighead Carp 11.75 21.25 26.75 35.0 43.75 #> 3 Bigmouth Buffalo 11.00 18.00 24.00 30.0 37.00 #> 4 Black Bullhead 6.00 9.00 12.00 15.0 18.00 #> 5 Black Carp 15.75 28.25 35.50 46.5 58.25 #> 6 Black Crappie 5.00 8.00 10.00 12.0 15.00 #> stock.cm quality.cm preferred.cm memorable.cm trophy.cm #> 1 20 30 40 50 55 #> 2 30 54 68 89 111 #> 3 28 46 61 76 94 #> 4 15 23 30 39 46 #> 5 40 72 90 118 148 #> 6 13 20 25 30 38