ABSTRACT
In contrast to ecosystem models, which are spatially aggregated models, landscape models are spatially explicit models that may include several types of ecosystems. In landscape models, the values of one or more state variables are dependent upon either distance or relative location. A landscape model may be totally constructed on a spatial basis, such as cellular automata models using a GIS platform. Some ecosystem models can be easily applied in a landscape mode. For example, AQUATOX is currently being applied to the Housatonic River in Connecticut by dividing the model into discrete segments and linking results from each segment to input information for downstream segments (Beach et al. 2000). Thus, models like AQUATOX and CASM were considered in the development of recommendations for landscape models.
