ex0817: Biological Pest Control
In Sleuth2: Data Sets from Ramsey and Schafer's "Statistical Sleuth (2nd Ed)"
ex0817 R Documentation
Biological Pest Control
Description
In a study of the effectiveness of biological control of the exotic
weed tansy ragwort, researchers manipulated the exposure to the
ragwort flea beetle on 15 plots that had been planted with a high
density of ragwort. Harvesting the plots the next season, they
measured the average dry mass of ragwort remaining (grams/plant) and
the flea beetle load (beetles/gram of ragwort dry mass) to see if the
ragwort plants in plots with high flea beetle loads were smaller as a
result of herbivory by the beetles.
Usage
ex0817
Format
A data frame with 15 observations on the following 2 variables.
Loadflee beetle load (in beetles/gram of ragwort dry mass)
Massdry mass of ragwort weed
Source
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A
Course in Methods of Data Analysis (2nd ed), Duxbury.
References
McEvoy, P. and Cox, C. (1991). Successful Biological Control of
Ragwort, Senecio jacobaea, by introducing insects in Oregon,
Ecological Applications 1(4): 430–442.
Examples
str(ex0817)
Sleuth2 documentation built on May 29, 2024, 7:37 a.m.
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| ex0817 | R Documentation |
Biological Pest Control
Description
In a study of the effectiveness of biological control of the exotic weed tansy ragwort, researchers manipulated the exposure to the ragwort flea beetle on 15 plots that had been planted with a high density of ragwort. Harvesting the plots the next season, they measured the average dry mass of ragwort remaining (grams/plant) and the flea beetle load (beetles/gram of ragwort dry mass) to see if the ragwort plants in plots with high flea beetle loads were smaller as a result of herbivory by the beetles.
Usage
ex0817Format
A data frame with 15 observations on the following 2 variables.
Loadflee beetle load (in beetles/gram of ragwort dry mass)
Massdry mass of ragwort weed
Source
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
References
McEvoy, P. and Cox, C. (1991). Successful Biological Control of Ragwort, Senecio jacobaea, by introducing insects in Oregon, Ecological Applications 1(4): 430–442.
Examples
str(ex0817)
R Package Documentation
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We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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