enneaphylla_laciniata {phyloclim} | R Documentation |
Niche overlap for Oxalis enneaphylla and O. lacinita
Description
Objects equ
and sim
contain the results of the niche.equivalency.test
and the bg.similarity.test
(Warren et al. 2008) for Oxalis enneaphylla and O. laciniata from section Palmatifoliae.
Usage
data(equ)
data(sim)
Format
A list containing five elements:
- method
Name of the test.
- species
Names of the two species compared.
- statistic
Test statistics D and I of niche overlap based on Schoeners D and modified Hellinger distances.
- p.value
p-values for the test statistics (if
method = "niche equivalency test"
).- null
Formulation of the null hypothesis.
- null.distribution
Null distributions of D and I derived from randomization (if
method = "niche equivalency test"
).- ci.x.randomY
Confidence intervals based on null distributions (if
method = "background similarity test"
).- ci.y.randomX
Confidence intervals based on null distributions (if
method = "background similarity test"
).- nd.x.randomY
Null distributions of D and I derived from randomization (if
method = "background similarity test"
).- nd.y.randomX
Null distributions of D and I derived from randomization (if
method = "background similarity test"
).
Source
C. Heibl, unpublished data.
References
Warren, D., R.E. Glor, & M. Turelli. 2008. Environmental niche equivalency versus conservatism: quantitative approaches to niche evolution. Evolution. 62: 2868-2883.
Examples
# plot results of niche equivalency test
data(equ)
plot(equ)
# plot results of background similarity test
data(sim)
plot(sim)