[R] species accumulation curve with percentages

Jim Lemon drj|m|emon @end|ng |rom gm@||@com
Wed Jun 17 00:23:04 CEST 2020


Hi Eddie,
I don't have the vegan package, but this may help:

accum<-function(x,y) return(x+(y-x)/7)
nspec<-90
for(i in 2:50) nspec[i]<-accum(nspec[i-1],220)
plot(nspec/nspec[1]*100,type="l",xlab="Sites",
 ylab="Species accumulation (%)")

Jim

On Wed, Jun 17, 2020 at 1:15 AM Eddie Tsyrlin
<tsyrline using student.unimelb.edu.au> wrote:
>
> I need to express species accumulation curve in percentage terms, i.e. the
> vertical axis is from 1% to 100%
> I have community data similar to BCI (from vegan package).
> I can construct the 'usual' species curve (see below) but I need to convert
> the species number to percentage.
>
> data("BCI")
> bcispec<-specaccum(BCI, method = "random",
>                    permutations = 100)
> plot(bcispec)
>
> --
> Eddie Tsyrlin, PhD Candidate | PEARG | Building 404, Grd Floor, Rm G21
>
> School of Biosciences | University of Melbourne
> *Post:* Bio21,  Flemington Rd, Parkville VIC 3052
> *m: *0413 995525
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