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The number of Lake Sturgeon (Acipenser fulvescens) caught in multiple samples from Black Lake, MI in 1997. The caught fish were examined for previous marks, marked (if previously unmarked), and then returned to the population.

Format

A data frame with 6 observations on the following 4 variables:

t

Sample number

caught

Total number of fish caught in the sample

recaptures

Number of previously marked fish in the sample

retmarks

Number of marked fish (previously and newly marked) returned to the population

Source

From Table 1 in Baker, E.A. and D.J. Borgeson. 1999. Lake sturgeon abundance and harvest in Black Lake, Michigan, 1975-1999. North American Journal of Fisheries Management 19:1080-1088. CSV file

Topic(s)

  • Population Size

  • Abundance

  • Mark-Recapture

  • Capture-Recapture

  • Schnabel

  • Schumacher-Eschmeyer

Examples

data(SturgeonBL)
str(SturgeonBL)
#> 'data.frame':	24 obs. of  4 variables:
#>  $ t         : int  1 2 3 4 5 6 7 8 9 10 ...
#>  $ caught    : int  3 2 4 4 4 1 2 4 5 4 ...
#>  $ recaptures: int  0 0 0 0 1 0 0 0 0 0 ...
#>  $ retmarks  : int  3 2 4 4 4 1 2 4 5 4 ...
head(SturgeonBL)
#>   t caught recaptures retmarks
#> 1 1      3          0        3
#> 2 2      2          0        2
#> 3 3      4          0        4
#> 4 4      4          0        4
#> 5 5      4          1        4
#> 6 6      1          0        1