Table 3.
Sample size for fish species groups used in each avian piscivore Hg risk model. Sample sizes vary for each piscivore because our modeling process only included fish species groups if they fell within the range preferred by avian piscivores. All fish Hg concentrations used in models were size adjusted to the preferred size of each piscivore (size shown in parenthesis in heading).
| Fish Species Group | Bald Eagle (36cm) | Osprey (30cm) | Loons (15cm) | Grebes (6cm) | Belted Kingfisher (5cm) | Fish Species Total |
|---|---|---|---|---|---|---|
| Anadromous salmonid | 288 | 335 | 623 | |||
| Arctic grayling | 263 | 274 | 284 | 821 | ||
| Black basses | 2744 | 3817 | 770 | 6015 | 4953 | 18299 |
| Burbot | 821 | 821 | 636 | 2278 | ||
| Carp | 355 | 533 | 85 | 1054 | 909 | 2936 |
| catfishes | 540 | 828 | 185 | 1845 | 1780 | 5178 |
| Char | 5001 | 5811 | 4479 | 2057 | 5473 | 22821 |
| Chub | 224 | 247 | 39 | 327 | 342 | 1179 |
| Cichlids | 8 | 7 | 15 | |||
| Cisco | 245 | 232 | 265 | 742 | ||
| Clupeiformes | 3 | 4 | 8 | 4 | 19 | |
| Crappie | 251 | 325 | 24 | 625 | 605 | 1830 |
| Freshwater drum | 24 | 24 | 48 | |||
| Goldeye | 1154 | 1236 | 1053 | 3443 | ||
| Killifish | 3948 | 4169 | 8117 | |||
| Minnows | 1952 | 1932 | 3884 | |||
| Morone bass | 29 | 193 | 222 | |||
| Pike | 13995 | 13303 | 12853 | 40151 | ||
| Pikeminnow | 1844 | 1899 | 226 | 1905 | 1913 | 7787 |
| Sculpin | 184 | 243 | 427 | |||
| Stickleback | 412 | 415 | 827 | |||
| Suckers | 3482 | 3585 | 1913 | 3554 | 4221 | 16755 |
| Sunfishes | 318 | 545 | 74 | 847 | 797 | 2581 |
| Trout | 3798 | 5681 | 1777 | 6189 | 6506 | 23951 |
| Walleye/Sauger | 13894 | 12437 | 12016 | 11337 | 17829 | 67513 |
| Whitefish | 5065 | 5334 | 4889 | 1561 | 16849 | |
| Yellow perch | 1758 | 1442 | 1248 | 2376 | 2582 | 9406 |
| Total | 56096 | 58890 | 42840 | 46203 | 54673 | 258702 |