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Compare results obtained in former papers.   McArthur (1955) were the first researcher to recognize the important role of Shannon’s entropy in ecological studies. In spite of the popularity as a measure of community diversity, its interpretation in terms of unpredicitability related with high diversity and its relations with community stability have been a difficult point of understanding and agreement among ecology scientifics. According with Anad and Orlici (1996) measuring the complexity of a biological community from its randomness and unpredictability fails to adequately capture it (Ricota, **).  Ricota (**): "Shannon’s entropy, fail to adequately capture the structural complexity of an ecological community. The contributions of spatial complexity to community structure   are however quantifiable if we consider, for example, the degree of spatial co-occurrence   between species. The larger and more intricate these correlations, the more structurally   complex the community. We suggest that Juhasz-Nagy information-theoretical functions ´   offer an adequate basis for the measurement of structural complexity""     http://chaos.aip.org/resource/1/chaoeh/v18/i4/p043106_s1     plasticity, memory, and cognition as special cases of emergence, self-organization, and complexity.