pika {asbio}

Nitrogen content of soils under pika haypiles

Description

Aho (1998) hypothesized that pikas worked as ecosystem engineers by building relatively rich soils (via decomposing haypiles and fecal accumulations) in otherwise barren scree. Soils from twenty one paired on-haypile and off-haypile sites were gathered from Rendezvous Peak Grand Teton National Park to determine if the habitats differed in total soil nitrogen.

Usage

data(pika)

Format

A data frame with 22 observations on the following 2 variables.

Haypile

a numeric vector

On.Off..N

a numeric vector

References

Aho, K., Huntly N., Moen J., and T. Oksanen (1998) Pikas (Ochotona princeps: Lagomorpha) as allogenic engineers in an alpine ecosystem. Oecologia. 114 (3): 405-409.