lynxhare | R Documentation |
The number of pelts (in thousands) traded with the Hudson Bay Trading Company in 1845 to 1935.
data(lynxhare)
A data frame with 91 observations on the following 3 variables.
Year
Trading year.
Hare
Number of snowshoe hare pelts (thousands).
Lynx
Number of lynx pelts (thousands).
These data are regularly used to demonstrate predator–prey cycles. However, the species are a part of more complex ecosystem (including plant–hare) and collected from various areas, and are hardly a demonstration of a predator–prey cycle alone.
The lynx data for the MacKenzie River area are provided in the
standard R dataset lynx
, whereas the current data
covers all Hudson Bay areas in Northern America. The dataset is a
data frame that also inherits from class "traj"
so that
plot.traj
can be used to display its results.
Stevens, M.H.H. (2009). A Primer of Ecology with R. Springer.
data(lynxhare) ## plot uses traj() method plot(lynxhare)
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