polar {good}

Polar bear litter size data set

Description

This data set corresponds to live-captured polar bears from late March 1992 to beginning of May 2017 at Svalbard, Norway.

Usage

data(polar)

Format

A data frame with 231 rows and 7 columns.

year

Catch year

days

Number of the day of the catch year

id

Unique specimen id

age

Age of the specimen, estimated using premolar tooth

agecat

Categorized age of the specimen

length

Body straight length (cm)

cubnumber

Litter size

Source

Folio, Dorinda Marie et al. (2019), Data from: How many cubs can a mum nurse? Maternal age and size influence litter size in polar bears, Dryad, Dataset.

References

Folio D. M., Aars J., Gimenez O., Derocher A. E., Wiig O. and Cubaynes S. (2019) How many cubs can a mum nurse? Maternal age and size influence litter size in polar bears, Biology letters, 15.

Examples

data(polar)
head(polar)