Figure 2 in Factors affecting trace element accumulation in livers of avian species from East Poland

Figure 2. RDA results showing the effect of different ecological parameters (the dotted lines) on the concentration of heavy metals in the livers of studied bird species. Monte Carlo permutation test of significance of all canonical axes: P = 0.002. Eigenvalues: axis 1 – 0.197; axis 2 – 0.138. Abbreviations and scales used for analysis: Species: CC - Corvus corax, CF - Corvus frugilegus, CO - Corvus cornix, CM - Corvus monedula, PP - Pica pica, SR - Streptopelia decaocto, AC - Anas platyrhynchos, GA - Garrulus glandarius, SR - Scolopax rusticola, AC - Ardea cinerea, PH - Phalacrocorax carbo, LA - Larus argentatus, LC - Larus canus, CR - Chroicocephalus ridibundus. Food preferences: food F – fish, food I – invertebrates, food O – omnivorous, food P – plants. Foraging area: importance of wetlands for foraging (I wetlands), importance of dumps for foraging (I dumps), importance of urban habitats for foraging (I urban): 0 – none, 1 – small, 2 – medium, 3 – big. Nesting site habitat: nest F – forest, nest U – urban habitat, nest A – aquatic habitat, nest R – rural habitats. Vertebrate carrion importance in food (I carrion): 1 – small, 2 – medium, 3 – big; invertebrate importance in food (I inv): 0 – none, 1 – small, 2 – big. Weight – weight of individuals according to Busse (1990).