Summary: Environmental Modelling & Software 19 (2004) 337340
WAND: an ecological network analysis user-friendly tool
Stefano Allesina Ã
, Cristina Bondavalli
Department of Environmental Sciences, University of Parma, Viale delle Scienze 11/A--43100 Parma, Italy
Received 17 July 2003; received in revised form 8 October 2003; accepted 14 October 2003
Ecological network analysis is a modelling approach that requires one to represent ecosystems as networks wherein matter/
energy enters compartments (species-trophospecies), is exchanged between them and finally leaves the system as dissipation or
usable export. The systematic analysis of the ecosystem flow networks is comprised of several techniques, aiming to interpret eco-
systems structure and functioning and to estimate their size and developmental stage. The implementation and improvement of
this modelling technique depends strongly upon the availability of appropriate software and access to technical expertise to easily
and speedily execute the huge amount of computation required.
With the package WAND presented in this manuscript the authors intended to promulgate a new, more user-friendly version
of some existing environmental software, NETWRK, to analyze networks of trophic exchanges in ecosystems. A Windows--com-
patible version of NETWRK has been developed, along with ancillary software to facilitate the estimation of new networks and
the translation of existing data sets between text and Excel formats.
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