“…Several hundred models of ecosystem productivity and function exist with varying levels of organization, scope, temporal resolution (seconds-years) and spatial explicitness (leaves -global), e.g., Register of Ecological Models (Schwalm and Ek, 2001). During this time a number of reviews have assessed the role and capability of models for scaling biological data at various temporal (hours-decades) and spatial (leaf-ecosystem) resolutions (e.g., Sklar and Costanza, 1990;Baldocchi, 1993;Bazzaz, 1993;Jarvis and Dewar, 1993;Bonan, 1995;Leuning et al, 1995;Landsberg and Gower, 1997a;Lucas and Curran, 1999;Running et al, 1999;Valentini et al, 1999). Additionally, reviews of individual ecosystem models and comparisons between several models for a number of representative ecosystems have also been conducted and these papers are outlined within Appendix 1.…”