GrandSkinks | R Documentation |
Results of an occupancy survey of 352 rocky outcrops ("tors") looking for grand skinks. Tors were surveyed up to 3 times per year for 5 years. The surrounding terrain was characterised as natural grassland or pasture.
data(GrandSkinks)
A data frame with 352 observations on the following 16 variables.
an array of observations of detection (1) or nondetection (0) of skinks for each of 3 occasions in 5 years. NA indicates occasions when a tor was not visited.
a factor indicating the type of grassland surrounding the tor.
The data are provided as a data frame, such as would result from reading in data from a text file. Further formatting is needed before using these for analysis: see the examples.
Data distributed with PRESENCE.
MacKenzie, D I; J D Nichols; A J Royle; K H Pollock; L L Bailey; J E Hines 2006. Occupancy Estimation and Modeling : Inferring Patterns and Dynamics of Species Occurrence. Elsevier Publishing.
data(GrandSkinks) # Extract detection histories: DH <- GrandSkinks[, 1:15] occMS0(DH, 3)
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