Alder: Nitrogen fixing by alder plants

Description Usage Format Details Source References Examples

Description

These data were collected by biologist Mike Anderson in a study of nitrogen fixation by bacteria growing on the root nodules of alder bushes.

Usage

1

Format

A data frame Alder with 196 rows and 24 variables:

Details

Two questions that Anderson wanted to answer are: (1) Can any variation in nitrogen fixation (variable SNF) be attributed to genotype (variable RF)? (2) What are the major sources of variation in SNF and PERLEAFN? Variables of biological interest are seasonality (SAMPPER or JULDAY), soil temperature and moisture, and habitat differences (STAGE for host species AT andSTAGE and LAND for host species AC).

Three replicate sites were sampled for each landscape/stage combination in three sampling periods across the growing season. Site sampling was arranged in a Latin Square design in order to systematize any effects of seasonality on N2-fixation rates.

Source

Michael Anderson

References

Anderson MD, Ruess RW, Myrold DD, Taylor DL. “Host species and habitat affect modulation by specific Frankia genotypes in interior Alaska” Oecologia (2009) 160:619-630.

Examples

1
mod <- lm(logSNF ~ RF + SITESPEC, data = Alder)

ProjectMOSAIC/mosaicModel documentation built on May 13, 2019, 1:35 a.m.