In a paper criticizing many methods of assaying biodiversity, Stuart Hurlbert refined the problem that he saw with Sanders' rarefaction method, that it overestimated the number of species based on sample size, and attempted to refine his methods.
Nunha publicación na que se criticaba moitos métodos de inferencia da biodiversidade, Stuart Hurlbert afinou o problema que lle atopaba ao método de rarefacción de Sanders; que era a sobrestimación de número de especies baseado no tamaño da mostra, e intentou redefinir o método.