Catches in removal events of Brown and Rainbow Trout at various locations.

Description

Catches of Brown (Salmo trutta) and Rainbow Trout (Oncorhynchus mykiss) in consecutive removal events at various locations.

Format

A data frame of 40 observations on the following 10 variables:

• species: Species of trout (brown or rainbow).
• site: Site in the watershed. See source.
• age0: Logical is TRUE if age-0 and FALSE if age is >0.
• first: Catch on the first removal pass.
• second: Catch on the second removal pass.
• third: Catch on the third removal pass.
• pop.cs: Population estimate by Carle-Strub method.
• pop.sch: Population estimate by Schnute method.
• q.cons: Logical is TRUE if catchability was constant.
• rejected: Logical is TRUE if Schnute method rejected the population estimate because the standard error was too large.

Topic(s)

• Population size
• Abundance
• Removal

Source

From Table 1 in Jones, M.L. and J.D. Stockwell. 1995. A rapid assessment procedure for enumeration of salmonine populations in streams. North American Journal of Fisheries Management, 15:551-562.

Examples

data(JonesStockwell)
str(JonesStockwell)
head(JonesStockwell)

## extract data for one species, age, and site (e.g., 3rd row)
JonesStockwell[3,]