lynxhare: Hudson Bay Trading Company Lynx and Hare Trapping Data

In jarioksa/ecostudy: Ecology Teaching Package

Hudson Bay Trading Company Lynx and Hare Trapping Data

Description

The number of pelts (in thousands) traded with the Hudson Bay Trading Company in 1845 to 1935.

Usage

data(lynxhare)

Format

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).

Details

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.

Source

Stevens, M.H.H. (2009). A Primer of Ecology with R. Springer.

Examples

data(lynxhare)
## plot uses traj() method
plot(lynxhare)

jarioksa/ecostudy documentation built on June 27, 2022, 6:03 a.m.