[ECOLOG-L] Similarity index

[Rajasri Ray]

Hello,
       I am trying to compare species composition among different patches
which vary in their sizes to a great extent.I am planning to compute
Jaccard's similarity index for this. For species enumeration, in some
patches I have documented presence of all members (due to very small size of
the patch ~ 80 - 500 sq. m).There is problem to apply uniform area concept
for species composition. I would like to know whether Jaccard's is suitable
for that kind of comparison.
Thanks
Rajasri