MeadowVoles | R Documentation |
Data for adult male meadow voles Microtus pennsylvanicus from a live-trapping study at Patuxent Wildlife Research Center (Nichols et al 1984). Trapping was carried out for 5 consecutive nights each month for 6 months (June to December 1981).
data(MeadowVoles)
A data frame with 171 observations on the following 31 variables.
a 1/0 array of capture data for voles for each of 5 occasions per month for 6 months.
a column with -1/1, where -1 indicates that the animal was not released after the last recorded capture.
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.
Williams, Nichols, Conroy (2002) Analysis and Management of Animal Populations: Modeling, Estimation, and Decision Making Academic Press, San Diego CA
Nichols, Pollock, Hines (1984) The use of a robust capture-recapture design in small mammal population studies: A field example with Microtus pennsylvanicus. Acta Theriologica 29:357-365.
data(MeadowVoles) # Extract detection histories: DH <- MeadowVoles[, 1:30] freq <- MeadowVoles$freq survRD(DH, freq=freq, occsPerSeason=5)
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