Use of Scale Invariance in Evaluating Judgement Indicators

摘要: Indicators are used to draw conclusions about ecological endpoints when these cannot be measured directly. In many cases, inferences an endpoint only possible because assumptions have been made the relationship between indicator and endpoint; we refer such indicators as judgement indicators. The validity of using a can gauged by examining known or assumed form general endpoint. rules for this kind inference consequence scale invariance, which originates from measurement theory. For simple comprised single measurement, allowed – equivalence, rank, equality intervals, ratios depend on whether data nominal, ordinal, interval, ratio scaled. composite containing two more indicators, also affected mathematical combination; e.g., terms summed multiplied. Standardizing allow relative importance observations, based natural range occurrence. Scale invariance is particularly important consideration in landscape assessments, since often make use