searches {carcass}

Data of a searcher efficiency trial

Description

Data containing the number of seen and not-seen items of a searcher efficiency trial performed in 3 different vegetation densities (visibilities) and for various persons.

Usage

data(searches)

Format

A data frame with 17 observations on the following 4 variables.

person

a factor with the names of the persons

visibility

a factor with visibility classes (vegetation densities)

detected

a numeric vector indicating the number of found items

notdetected

a numeric vector indicating the number of not found items

Source

Niermann I, Brinkmann R, Korner-Nievergelt F, Behr O (2011) Systematische Schlagopfersuche - Methodische Rahmenbedingungen, statistische Analyseverfahren und Ergebnisse. In: Brinkmann R, Niermann I, Behr O, editors. Entwicklung von Methoden zur Untersuchung und Reduktion des Kollisionsrisikos von Fledermaeusen an Onshore-Windenergieanlagen Goettingen: Cuvillier Verlag. pp. 40-115.

Examples

data(searches)
str(searches)
search.efficiency(searches)