%0 Generic %D 2010 %T A computational modeling for real ecosystems based on P systems %A Mónica Cardona %A M. Angels Colomer %A Antoni Margalida %A Antoni Palau %A Ignacio Pérez-Hurtado %A Mario J. Pérez-Jiménez %A Delfí Sanuy %C Amsterdam, Netherlands %I Springer Verlag %K Dynamics %K Ecosystem %K Mussel %K P-System %K Probabilistic %K Scavenger %N 1 %P 39-53 %R 10.1007/s11047-010-9191-3 %U http://www.springerlink.com/content/k5346u33465h5u50/ %V 10 %X In this paper, a P systems based general framework for modeling ecosystems dynamics is presented. Particularly, ecosystems are specified by means of multienvironment P systems composed of a finite number of environments, each of them having an extended P system with active membranes. The semantics is of a probabilistic type and it is implemented by assigning each rule of the system a probabilistic constant which depends on the environment and the run time. As a case study, two real ecosystems are described: scavenger birds in the Catalan Pyrenees and the zebra mussel (Dreissena Polymorpha) in Ribarroja reservoir (Spain).