rodents {LDATS}

Portal rodent data

Description

An example LDATS dataset, functionally that used in Christensen et al. (2018). The data are counts of 21 rodent species across 436 sampling events, with the count being the total number observed across 8 50 m x 50 m plots, each sampled using 49 live traps (Brown 1998, Ernest et al. 2016).

Usage

rodents

Format

A list of two data.frame-class objects with rows corresponding to documents (sampling events). One element is the document term table (called document_term_table), which contains counts of the species (terms) in each sample (document), and the other is the document covariate table (called document_covariate_table) with columns of covariates (newmoon number, sin and cos of the fraction of the year).

Source

https://github.com/weecology/PortalData/tree/master/Rodents

References

Brown, J. H. 1998. The desert granivory experiments at Portal. Pages 71-95 in W. J. Resetarits Jr. and J. Bernardo, editors, Experimental Ecology. Oxford University Press, New York, New York, USA.

Christensen, E., D. J. Harris, and S. K. M. Ernest. 2018. Long-term community change through multiple rapid transitions in a desert rodent community. Ecology 99:1523-1529. link.

Ernest, S. K. M., et al. 2016. Long-term monitoring and experimental manipulation of a Chihuahuan desert ecosystem near Portal, Arizona (1977-2013). Ecology 97:1082. link.