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    STUDIA PHYSICA - Issue no. 2 / 2005  
         
  Article:   THE SPECIES ABUNDANCES DISTRIBUTION IN A NEUTRAL COMMUNITY MODEL.

Authors:  ZOLTÁN NÉDA, MÁRIA RAVASZ, ADALBERT BALOG, ARANKA DERZSI. 		 
       
         
  Abstract:  Analytical approximations and computer simulations are considered for determining the Species Abundances Distribution in neutral community ecological model. The neutral community model considered by us has many common features with the generally accepted model introduced by S. Hubbell [1]. The analytically obtained distribution function describes well the computer simulation results and real measurement data on large-scale neutral type ecological systems. Our solution leads also to an interesting relation between the total number of individuals, total number of species and the size of the most abundant species in the considered metacommunity. Computer simulations on the considered model prove also the validity of this scaling relation.  
         
     
         
         
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