Stratify_example: Simulated minke whale data

In Distance: Distance Sampling Detection Function and Abundance Estimation

Simulated minke whale data

Description

Data simulated from models fitted to 1992/1993 Southern Hemisphere minke whale data collected by the International Whaling Commission. See Branch and Butterworth (2001) for survey details (survey design is shown in figure 1(e)). Data simulated by David Borchers.

Format

data.frame with 99 observations of 7 variables: Region.Label stratum label ("North" or "South") Area stratum area (square nautical mile) Sample.Label transect identifier Effort transect length (nautical mile) object object ID distance observed distance (nautical mile) Study.Area name of study area

References

Branch, T.A. and D.S. Butterworth. (2001) Southern Hemisphere minke whales: standardised abundance estimates from the 1978/79 to 1997/98 IDCR-SOWER surveys. Journal of Cetacean Research and Management 3(2): 143-174

Hedley, S.L., and S.T. Buckland. (2004) Spatial models for line transect sampling. Journal of Agricultural, Biological, and Environmental Statistics 9: 181-199. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1198/1085711043578")}.

Distance documentation built on May 29, 2024, 9:39 a.m.