drc (version 1.2-0)

RScompetition: Competition between two biotypes

Description

To assess the competitive ability between two biotypes of Lolium rigidum, one resistant to glyphosate and the other a sensitive wild type, the density of resistant and sensitive biotypes was counted after germination.

Usage

data(RScompetition)

source

The dataset is from Pedersen et al (2006).

Details

A hyperbolic model (Jensen, 1993) is describing the data reasonably well.

References

Jensen, J. E. (1993) Fitness of herbicide-resistant weed biotypes described by competition models, Proceedings of the 8th EWRS Symposium, 14-16 June, Braunschweig, Germany, 1, 25--32. Pedersen, B. P. and Neve, P. and Andreasen, C. and Powles, S. (2006) Ecological fitness of a glyphosate resistant Lolium rigidum population: growth and seed production along a competition gradient, Basic and Applied Ecology, ?, ??--??.

Examples

data(RScompetition)