[Vegan-commits] species accumulation curves

[Mark van Kleunen]

Hi,

Is there a function in vegan or in another R package that allows one to 
make species accumulation curves, in which the the cumulative number of 
species is not fitted against the number of sites (as done in specaccum) 
but against the cumulative area of the sites. Take as example that one 
has a big matrix of the presence-absence of species in multiple European 
countries, and wants to know the relationship between species richness 
and area. So, I would like to randomly select one country, keep the 
number of species and the area of that country, then randomly select 
another country, combine it with the first country, keep the cumulative 
number of species and the cumulative area of both countries, and so on. 
This should then be repeated a 100 or 1000 times to get some confidence 
intervals. Is this possible with any of the current functions?

best wishes,
Mark van Kleunen