UqN {hilldiv}

Jaccard-type overlap

Description

The Jaccard-type overlap quantifies the effective proportion of OTUs or lineages in a system that are shared across all subsystems. Hence, this metric quantifies overlap from the perspective of the overall system. Its corresponding dissimilarity (1 - UqN) quantifies the effective proportion of nonshared OTUs or lineages in the overall system. UqN is integrated in the functions beta_dis() and pair_dis().

Usage

UqN(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.

Details

Jaccard-type overlap

Value

A Jaccard-type overlap value

Author(s)

Antton Alberdi, [e-mail]

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

UqN(beta=1.24,qvalue=1,N=2)
UqN(1.24,1,2)