Some programmes prefer the use of coarse measures of biodiversity to facilitate simpler exchanges whereas others have opted for more a detailed representation of biodiversity through more fine-scale measurement of individual characteristics (Thomas, Brandao and Chomitz, 2004). Successful indicators capture the key components of biodiversity that must be protected, according to regulatory requirements, or in the absence of such requirements, that society wants protected. These choices may be informed by the types of biodiversity and ecosystem services that are valued by stakeholders, the latest scientific understanding and the availability of data to populate the indicator at a reasonable cost/benefit ratio (Figure 4.2).