Lengths and weights for Yellow Perch from Trout Lake, WI.

Lengths and weights for Yellow Perch (Perca flavescens) from Trout Lake, WI, 1981-2006. Fish were collected with a variety of gears.

Format

A data frame with 7238 observations on the following 7 variables:

lakeid: Lake name (all TR=Trout Lake)
year4: Year of capture
sampledate: Date of capture
gearid: Capture gear type -- beach seine (BSEINE), crayfish trap (CRAYTR), electrofishing (ELFISH), fyke net (FYKNET), trammel net (TRAMML), vertical gillnets of different mesh sizes (VBN0XX), and different types of fyke nets (FYKNED and FYKNEL)
spname: Species name (all YELLOWPERCH)
length: Total Length (nearest mm) at capture
weight: Weight (nearest 0.1 or 1 g) at capture

Source

From a query to the North Temperate Lakes Long Term Ecological Research, Fish Lengths and Weights Database. CSV file

Topic(s)

Weight-Length
Length Frequency
Size Structure
PSD

Examples

data(YPerchTL)
str(YPerchTL)
#> 'data.frame':	7238 obs. of  7 variables:
#>  $ lakeid    : Factor w/ 1 level "TR": 1 1 1 1 1 1 1 1 1 1 ...
#>  $ year4     : int  1981 1981 1981 1981 1981 1981 1981 1981 1981 1981 ...
#>  $ sampledate: Factor w/ 121 levels "7/17/2005","7/18/2005",..: 90 90 92 92 93 90 92 93 94 90 ...
#>  $ gearid    : Factor w/ 13 levels "BSEINE","CRAYTR",..: 1 1 6 1 1 1 1 3 3 1 ...
#>  $ spname    : Factor w/ 1 level "YELLOWPERCH": 1 1 1 1 1 1 1 1 1 1 ...
#>  $ length    : int  39 40 40 40 40 41 41 42 42 42 ...
#>  $ weight    : num  0.5 NA NA NA NA NA NA 0.2 NA NA ...
head(YPerchTL)
#>   lakeid year4 sampledate gearid      spname length weight
#> 1     TR  1981  8/10/1981 BSEINE YELLOWPERCH     39    0.5
#> 2     TR  1981  8/10/1981 BSEINE YELLOWPERCH     40     NA
#> 3     TR  1981  8/11/1981 FYKNET YELLOWPERCH     40     NA
#> 4     TR  1981  8/11/1981 BSEINE YELLOWPERCH     40     NA
#> 5     TR  1981  8/12/1981 BSEINE YELLOWPERCH     40     NA
#> 6     TR  1981  8/10/1981 BSEINE YELLOWPERCH     41     NA
plot(weight~length,data=YPerchTL)