R-universe - luiscayuela (Luis Cayuela)

rareNMtests - Ecological and Biogeographical Null Model Tests for Comparing Rarefaction Curves

Randomization tests for the statistical comparison of i = two or more individual-based, sample-based or coverage-based rarefaction curves. The ecological null hypothesis is that the i samples were all drawn randomly from a single assemblage, with (necessarily) a single underlying species abundance distribution. The biogeographic null hypothesis is that the i samples were all drawn from different assemblages that, nonetheless, share similar species richness and species abundance distributions. Functions are described in L. Cayuela, N.J. Gotelli & R.K. Colwell (2015) <doi:10.1890/14-1261.1>.

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1.63 score 43 scripts 170 downloads

betaper - Taxonomic Uncertainty on Multivariate Analyses of Ecological Data

Permutational method to incorporate taxonomic uncertainty and some functions to assess its effects on parameters of some widely used multivariate methods in ecology, as explained in Cayuela et al. (2011) <doi:10.1111/j.1600-0587.2009.05899.x>.

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1.00 score 284 downloads