Modelos de idoneidad del hábitat (Término temático)

Morrison, M.L. Wildlife-habitat relationships, 1992: p. 226 (Examples of theoretical wildlife-habitat relationship models are habitat suitability index (HSI) models as formulated by the USDI Fish and Wildlife Service. In HSI models, an overall habitat suitability index is calculated from the geometric mean of three environmental parameters. The geometric mean presumably represents the best "balance" and interaction of all three factors. With a geometric mean, if the value of any one variable is zero, then the composite HSI score is zero. This property is desirable in models for which all environmental variables must be nonzero for any positive response by the species. HSI models are theoretical in nature because the underlying relationship between habitat capability and each environmental parameter is assumed from the outset, rather than derived from hindcasting data from field observations. Actual coefficients used in the relationships are often sythesized from field observations and expert opinion. Further, HSI models are mathematical because of the explicit formula (geometric mean) used. They are also deterministic, because only single values for environmentl parameters are used, resulting in only single values of solutions. Finally, they are analytic in form because the mathematical formulas can be solved exactly for particular values of environmental parameters.) p. 236 (The general model form of the HSI is: HSI = (Vb1s x Vb2s x Vb3s)p1s/p3s where Vb1s, Vb2s, Vb3s are three key environmental variables. Each variable and the resulting HSI values are scaled from 0 to 1. The overall HSI value represents the final response of the species to the combination of the values of the environmental parameters.)

Guisan. Habitat suitability and distribution models, 2017: (Habitat suitability index models)