2. Landscape mosaic model. In the landscape mosaic model [7], landscapes are viewed as spatially complex, heterogeneous assemblages of patch types, which cannot simply be categorized into discrete elements such as patches, matrix, and corridors [36]. Rather, the landscape is viewed from the perspective of the organism or process of interest. Patches are bounded by other patches that may be more or less similar, as opposed to highly contrasting and often hostile habitats, as in the case of the island model. The major advantage of the landscape mosaic model is its more realistic representation of how organisms perceive and interact with landscape patterns. Few organisms, for example, exhibit a dichotomous (all or none) response to habitats (patch types). The major disadvantage of the landscape mosaic model is that it requires a detailed understanding of how organisms interact with landscape pattern.