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\section{Discussion}  other measures... transfer entropy, Tsallis entropy... entropy...Rao`s quadratic entropy index (function dbFD from package FD in R; also check ade4) with presence-absence data, that it is simply the mean distance between the occurring species. (Inpect the scaling by the possible maximum, because it coudlbe meaningless for abundance data).     http://chaos.aip.org/resource/1/chaoeh/v18/i4/p043106_s1  plasticity, memory, and cognition as special cases of emergence, self-organization, and complexity.