The scale indicates an appraisal of the specificity of the information (and data) available to support the assessment of intolerance, recoverability, and hence, sensitivity.
|High||Assessment has been derived from sources that specifically deal with sensitivity and recoverability of a species or biotope to a particular factor. Experimental work has been done investigating the effects of such a factor.|
|Moderate||Assessment has been derived from sources that consider the likely effects of a particular factor on a species or biotope.|
|Low||Assessment has been derived from sources that only cover aspects of the biology of the species (or biotope) or from a general understanding of the species or biotope. No information is present regarding the effects of factors.|
|Very low||Assessment derived by "informed judgement" where very little or no information is present at all on the species.|
|Not relevant||No assessment of sensitivity or recoverability was made.|
|NB:||In some cases it is possible for limited evidence to be considered "high" for the assessment of sensitivity to a specific factor. For example, if a species is known to lack eyes (or equivalent photoreceptors) then it could confidently be considered "not sensitive" to visual disturbance and the level of evidence would be recorded as "high".|