TUNA {DELTD}R Documentation

Data of Tuna fish


Data is about Tuna, which is saltwater fish. Its seasonal migration is between waters off the coast of Australia and the Indian Ocean. The data represents a line transect aerial survey of Southern Bluefin Tuna in the Great Australian Bight in summer when the tuna tend to stay on the surface. The abundance D is measured by

D = \frac{N}{A}

, where N is the total number of surface schools in the Bight and A is the survey area. To estimate D, an aircraft with two spotters on board is used to fly randomly allocated transect lines to detect tuna schools. Each school sighted from transect is counted and its perpendicular distance to transect is measured.




A vector with 64 observations


Buckland, S. T.; Burnham, K. P.; Anderson, D. R.; Laake, J. L. 1993. Density Estimation using Distance Sampling. Chapman & Hall, London.

[Package DELTD version 2.6.8 Index]