WalleyeWyrlng {FSAdata} | R Documentation |
Annual catches of yearling Walleye in bottom trawls from Lake Winnebago, WI, 1986-2010.
Description
Annual catches of yearling Walleye (Sander vitreus) in bottom trawls from Lake Winnebago, WI, 1986-2010.
Format
A data frame with 35 observations on the following 4 variables.
- tows
Number of trawl tows (i.e., effort)
- year
Year of capture
- yearlings
Number of yearling Walleye captured
- yrclass
Year-class of the captured yearlings (capture year minus 1)
Details
The catch of yearling Walleye and number of trawl tows by year are in this data.frame. The CPE is catch divided by number of tows. Koenigs et al. (2015) rescaled the CPE values to have a mean of 0 and a standard deviation of 1.
Topic(s)
Year-class Strength
Recruitment
Note
Used in the Introductory Fisheries Analyses with R book.
Source
From Koenigs, R.P., Bruch, R.M., Stelzer, R.S., and Kamke, K.K. 2015. Validation of otolith ages for Walleye (Sander vitreus) in the Winnebago System. Fisheries Research, 167:13-21. Obtained directly from Ryan Koenigs. CSV file
Examples
data(WalleyeWyrlng)
str(WalleyeWyrlng)
head(WalleyeWyrlng)
plot(yearlings~yrclass,data=WalleyeWyrlng)