ant: Ant data (datatype = "incidence_freq")

In JohnsonHsieh/iNEXT: Interpolation and Extrapolation for Species Diversity

Ant data (datatype = "incidence_freq")

Description

Ant species incidence frequencies for samples from five elevations/assemblages in northeastern Costa Rica (Longino and Colwell 2011). The number of sampling units (1m x 1m forest floor plot) for the 5 assemblages are respectively 599, 230, 150, 200 and 200. The number of observed species for the 5 assemblages are respectively 227, 241, 122, 56 and 14.

Usage

data(ant)

Format

The input format for each site is a list of incidence frequencies. For incidence data, the first entry must be the total number of sampling units, followed by the species incidence frequencies as shown below:
A list of 5 vectors
$ h50m : num [1:228] 599 1 1 1 1 1 1 1 1 1 ...
$ h500m : num [1:242] 230 1 1 1 1 1 1 1 1 1 ...
$ h1070m: num [1:123] 150 1 1 1 1 1 1 1 1 1 ...
$ h1500m: num [1:57] 200 1 1 1 1 1 1 1 1 1 ...
$ h2000m: num [1:15] 200 1 2 2 3 4 8 8 13 15 ...

References

Longino, J.T. & Colwell, R.K. (2011) Density compensation, species composition, and richness of ants on a neotropical elevational gradient. Ecosphere, 2, art29.

JohnsonHsieh/iNEXT documentation built on March 26, 2024, 5:19 a.m.