hilldiv (version 1.5.1)

CqN: S<U+00F8>rensen-type overlap

Description

The S<U+00F8>rensen-type overlap quantifies the effective average proportion of a sub-systems OTUs (or lineages in the case of phylodiversities) that is shared across all subsystems. This is thus a metric that quantifies overlap from the subsystems perspective. Its corresponding dissimilarity measure (1 - CqN) quantifies the effective average proportion of nonshared OTUs or lineages in a system. CqN is integrated in the functions beta_dis() and pair_dis().

Usage

CqN(beta, qvalue, N)

Arguments

beta

A beta diversity value based on Hill numbers.

qvalue

The q value used to compute the beta diversity. It needs to be a positive number, usually between 0 and 5, but most commonly 0, 1 or 2. It can be an integer or contain decimals.

N

An integer indicating sample size, the number of sampling units to be used to compute the similarity measure.

Value

A S<U+00F8>rensen-type overlap value

Details

S<U+00F8>rensen-type overlap

References

Alberdi, A., Gilbert, M.T.P. (2019). A guide to the application of Hill numbers to DNA-based diversity analyses. Molecular Ecology Resources, 19, 804-817. Chao, A., Chiu, C.H., & Hsieh, T. C. (2012). Proposing a resolution to debates on diversity partitioning. Ecology, 93, 2037-2051. Jost, L. (2007). Partitioning diversity into independent alpha and beta components. Ecology, 88, 2427-2439.

See Also

div_part, beta_dis

Examples

# NOT RUN {
CqN(beta=1.24,qvalue=1,N=3)
CqN(1.24,1,3)
# }