AMAP Greenland and the Faroe Islands 1997-2001

Table 4.5.8. Thule-1997. ²⁴¹Am / ^239,240Pu activity ratios in various groups of sediment dwelling benthic biota. ²⁴¹Am / ^239,240Pu activity ratio Type sub-type Mean SD% n Benthos All 0.39 76 84 Molluscs All 0.63 62 24 Polychaetes All 0.28 77 16 Crustaceans All 0.22 36 5 Echinoderms Ophiuroidea 0.55 24 4 Echinoderms Asteroidea 0.41 34 11 Echinoderms Echinoidea 0.17 8 5 Echinoderms Holothurioidea 0.13 67 2