Figure 1
Figure 2
Statistical characteristics of mercury concentrations (ng HgTOT g–1 d_w_) assayed in claws, tissues and organs of herring gulls found around the Gulf of Gdańsk in 2010–2012
| group | n | Md | min.–max () | noutlier/nextreme | RNG |
|---|---|---|---|---|---|
| claws | 49 | 869.2 | 127.2–5341.5 | 3/1 | min.–2654.4 |
| outermost primary P101 | 44 | 743.0 | 40.1–6989.5 | 1/1 | min.–2689.9 |
| innermost primary P11 | 40 | 1330.6 | 79.0–9186.8 | 1/0 | min.–4739.6 |
| breast contour feathers1 | 46 | 1437.7 | 131.3–8211.9 | 2/1 | min.–4453.0 |
| rectrices1 | 45 | 583.6 | 62.4–6355.6 | 0/2 | min.–2908.0 |
| down1 | 17 | 1138.6 | 605.3–4908.0 | 1/0 | min.–4102.0 |
| breast contour feathers (new)1 | 12 | 2153.8 | 399.5–4193.6 | 0/0 | min.–max |
| liver2 | 48 | 546.9 | 58.1–1694.3 | 0/0 | min.–max |
| kidney2,3 | 45 | 455.7 | 19.1–1882.6 | 1/0 | min.–1872.3 |
| lung2,3 | 46 | 311.8 | 31.4–1104.8 | 0/0 | min.–max |
| muscle2 | 49 | 244.0 | 42.7–1076.7 | 0/0 | min.–max |
| heart2 | 48 | 278.2 | 21.5–1043.8 | 0/0 | min.–max |
| brain2,3 | 43 | 156.5 | 22.5–687.8 | 3/0 | min.–459.9 |
| blood2,3 | 41 | 434.4 | 15.4–1410.6 | 0/0 | min.–max |
| intenstine3 | 37 | 208.2 | 18.5–933.2 | 2/0 | min.–475.9 |
Spearman's correlation coefficients (R) between the total mercury concentration (ng HgTOT g-1 d_w_) in claws of herring gulls and the total mercury concentration (ng HgTOT g-1 d_w_) in their selected internal organs, tissues and feathers
| selected variable | n | R | P | equation |
|---|---|---|---|---|
| outermost primary P10 | 44 | 0.38 | 0.010 | claws = 0.2193 x outermost primary P10 + 1078.1857 |
| innermost primary P1 | 40 | – | n.s | – |
| breast contour feathers | 46 | 0.35 | 0.016 | claws = 0.1697 x breast contour feathers + 982.1230 |
| rectrices | 45 | 0.32 | 0.030 | claws = 0.34228 x rectrices + 923.6664 |
| down | 17 | – | n.s | – |
| breast contour feathers (new) | 12 | – | n.s | – |
| liver | 48 | 0.39 | 0.006 | claws = 0.4929 x liver + 980.5223 |
| kidney | 45 | 0.50 | 0.000 | claws = 0.771 x kidney + 809.6370 |
| lungs | 46 | 0.45 | 0.002 | claws = 1.5575 x lungs + 677.7302 |
| muscle | 49 | 0.34 | 0.018 | claws = 1.0795 x muscle + 888.1018 |
| heart | 48 | 0.40 | 0.005 | claws = 1.5484 x heart + 763.8899 |
| brain | 43 | 0.47 | 0.002 | claws = 3.5917 x brain + 475.8652 |
| blood | 41 | 0.47 | 0.002 | claws = 1.0740 x blood + 767.8458 |
| intestines | 37 | 0.48 | 0.003 | claws = 2.6663 x intestines + 628.7789 |