mrich: Calculate the average of Carvalho's pairwise-site richness...
In MBI: (M)ultiple-site (B)iodiversity (I)ndices Calculator

Description Usage Arguments Author(s) References See Also Examples

Another version is Carvalho's multiple-site richness difference index, see the function of crich()

1	mrich(data)

data

rows of the data are sites, while columns of the data are species

Youhua Chen <haydi@126.com>

Chen Y (2012) MBI: an R package for calculating multiple-site biodiversity indices. Submitted.

Carvalho J, Cardoso P, Gomes P (2012) Determining the relative roles of species replacement and species richness differences in generating beta-diversity patterns. Global Ecology and Biogeography, 21, 760-771.

crich, mrep

test<-c(90,30,11,5,100,46,19,70,19,1,
        17,0,0,0,30,4,20,26,12,5,37,
		0,25,0,60,30,29,42,36,19,32,
		12,0,0,50,6,39,35,18,0,35,0,
		28,0,70,35,56,49,42,0,81,15,
		36,0,90,45,72,63,54,9,13,0,
		0,5,20,1,4,0,0,0,0,0,0,0,10,
		0,0,0,41,4,72,24,7,0,80,1,64,
		56,48,0,36,0,29,0,40,32,32,2,0,0)
test<-matrix(test,10,10)
mrich(test)