embauba


Presence/absence data of vines on Cecropia trees of two morphotypes.


datasets

Resampling Stats (http://www.resample.com) is an add-in for
running randomization tests in Excel worksheets. The workflow is (1) to define
a statistic of interest that can be calculated from a data table, (2) to
randomize rows ad/or columns of a data table to simulate a null hypothesis
and (3) and to score the value of the statistic from many randomizations. The
relative frequency distribution of the statistic in the simulations is then
used to infer the probability of the observed value be generated by the null
process (probability of Type I error). This package intends to translate this
logic for R for teaching purposes. Keeping the original workflow is favored over
performance.

Paulo I Prado

Rsampling

Ports the Workflow of "Resampling Stats" Add-in to R

embauba function

A data frame with 152 rows (plants) and 2 variables:
<dl>
<dt>morphotype</dt><dd>the tree morphotype, factor with two levels</dd> <dt>with.vines</dt><dd>does the tree harbor vines? Logical. </dd> </dl>

Format

Mello, T.J. 2012. Infestação por lianas e comportamento de poda por formigas em <em>Cecropia</em>
(Urticaceae). Curso de campo "Ecologia da Mata Atlântica"
(G. Machado; P.I. Prado & A.M.Z. Martini, eds.). Universidade de São Paulo, São Paulo.
<a href="http://ecologia.ib.usp.br/curso/2012/PDF/PI-Thayna.pdf">http://ecologia.ib.usp.br/curso/2012/PDF/PI-Thayna.pdf</a>

Source

 Two morphotypes of Cecropia trees differ in the occupancy by ant colonies.
Ants attack and drive out other insects that get to the trees.
To test if this protection also affects infestation by vines, trees of similar size of both morphs
were sampled and inspected for the presence of vines.

Details

Mello, T.J. 2012. Infestação por lianas e comportamento de poda por formigas em <em>Cecropia</em>
(Urticaceae). Curso de campo "Ecologia da Mata Atlântica"
(G. Machado; P.I. Prado & A.M.Z. Martini, eds.). Universidade de São Paulo, São Paulo.
<a href = 'http://ecologia.ib.usp.br/curso/2012/PDF/PI-Thayna.pdf'>http://ecologia.ib.usp.br/curso/2012/PDF/PI-Thayna.pdf</a>

embauba: Vine infestation on Cecropia trees

Description

Usage

Arguments

Format

Source

Details