Table 17.

Suggested probability distributions and arithmetic means for the concentration ratios (CR) for wildlife (birds and mammals, whole organism) with respect to soil (Bq kg⁻¹_{fresh weight} per Bq kg^‑1_{dry weight}).^a

Element	Wildlife type	Modeb	Minimum	Maximum	Arithmetic meanc
Sr	birds	2.3 × 10−1	4.8 × 10−3	7.2 × 100	5.4 × 10−1
	birds-omnivorous	2.6 × 10−1	4.0 × 10−2	7.2 × 100	7.6 × 10−1
	mammals	9.5 × 10−1	9.9 × 10−3	1.7 × 101	1.4 × 100
	mammals-carnivorous	4.3 × 10−1	1.3 × 10−2	9.8 × 100	8.7 × 10−1
	mammals-herbivorous	1.6 × 100	9.9 × 10−3	1.7 × 101	1.7 × 100
	mammals-omnivorous	1.1 × 100	3.0 × 10−2	1.0 × 101	1.3 × 100
	mammals-Rangifer spp.	5.5 × 100	4.8 × 10−3	1.5 × 101	2.2 × 100
Tc	birds	1.7 × 10−1*	1.7 × 10−2	1.7 × 100	2.6 × 10−1
Cs	birds	2.7 × 10−1	1.4 × 10−3	1.6 × 101	8.1 × 10−1
	birds-herbivorous	5.4 × 10−1	2.3 × 10−2	5.8 × 100	7.4 × 10−1
	birds-omnivorous	1.7 × 10−1	9.4 × 10−3	1.6 × 101	9.2 × 10−1
	mammals	1.3 × 100	2.8 × 10−3	1.4 × 102	5.4 × 100
	mammals-carnivorous	1.4 × 10−1	2.8 × 10−3	2.3 × 101	9.9 × 10−1
	mammals-herbivorous	1.5 × 100	1.0 × 10−2	1.4 × 102	6.3 × 100
	mammals-omnivorous	1.7 × 100	1.7 × 10−2	3.6 × 101	2.8 × 100
	mammals-Rangifer spp.	1.3 × 101	1.2 × 10−1	8.1 × 101	1.1 × 101
Ba	mammals-omnivorous	4.8 × 10−3	1.6 × 10−3	1.4 × 10−2	5.2 × 10−3
Pu	birds	9.8 × 10−4	3.3 × 10−5	1.5 × 10−2	1.6 × 10−3
	birds-omnivorous	1.3 × 10−3	3.3 × 10−5	1.5 × 10−2	1.7 × 10−3
	mammals	9.3 × 10−3	1.6 × 10−4	2.6 × 100	9.4 × 10−2
	mammals-carnivorous	3.1 × 10−3	7.1 × 10−4	2.2 × 10−2	4.7 × 10−3
	mammals-herbivorous	9.2 × 10−3	1.6 × 10−4	2.8 × 10−1	2.1 × 10−2
	mammals-omnivorous	1.1 × 10−2	2.2 × 10−4	2.6 × 100	1.0 × 10−1
	mammals-Rangifer spp.	3.5 × 10−3	3.3 × 10−3	7.6 × 10−3	4.5 × 10−3

^aAll distributions are log-triangular distributions (as plotted in logarithmic space). Values of CR were obtained from IAEA 2014 (Table 5). Values represent all relevant wildlife types for which information is available. For most cases, the mode (in logarithmic space) represents the geometric mean (or median) of the available data, and the minimum and maximum are the reported minimum and maximum values. If the reported minimum and maximum values differed by less than a factor of 10, the minimum and maximum values of the distribution were set at a factor of 3 below and above the mode (in logarithmic space), respectively. The mode value (in logarithmic space) with an asterisk (*) represents the arithmetic mean of two reported values (IAEA 2014); for this case, the minimum and maximum have been set to a factor of 10 below and above the mode (in logarithmic space), respectively.

^bParameter values are for the log-triangular distribution as plotted in logarithmic space.

^cThe arithmetic mean of the indicated distribution; this value can be used as a point estimate in deterministic assessments.