Description Usage Arguments Details Value Author(s) References See Also Examples

Variance partition based on a single multi-level factor and comparison of the relative contribution of the “*Between Group Component*” (BGC) versus the ratio WIC/TNW. For a more general discussion of variance partition the reader is pointed to Viola et al. (2012).

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`dataset` |
Object of class RInSp with data of type “double”. |

`factor` |
Numeric value indicating the column in the |

`weight.type` |
The weighting option for unbalanced prey numbers. See details in |

The Beteen Group Component is calculated as the (population) variance of the mean values of the n-levels groups.

The level of checking performed by the procedure is low. Pay attention to input parameters.

The result is a matrix of 5 rows by n+1 columns, when n is the number of levels of the factor used to create groups in the dataset. The first four rows are the values for WIC, BIC, TNC and WIC/TNW for all possible levels and the whole dataset. Last row is the value of the “*Between Group Component*” (BGC) for the n-levels factor.

Dr. Nicola ZACCARELLI and Dr. Giorgio MANCINELLI

Violle C., Enquist B.J., McGill B.J., Jiang L., Albert C.H., Hulshof C., Jung V. and Messier J. 2012. The return of the variance: intraspecific variability in community ecology. *Trends in Ecology & Evolution* **27**: 244252.

Function `WTcMC`

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