Randomization models, often termed "null" models, have been widely used since the 1970s in studies of species community and biogeographic patterns. More recently they have been used to test for nested ...

Conservation Biology, Vol. 1, No. 4 (Dec., 1987), pp. 323-334 (12 pages) The nested subset hypothesis states that the species comprising a depauperate insular biota are a proper subset of those in ...