Table 1. Geographical and genetic information of the used samples.
| Region | Sample location | nuDNA | HVR | COI | Limosa species/subspecies |
| Netherlands (140) | Eemnespolder/Arkemheen | 24 | 6 | 2 | Limosa limosa limosa |
| Grote Zoeterwoudse polder | 11 | 4 | 1 | Limosa limosa limosa | |
| Vijfheerenlanden | 10 | 4 | 3 | Limosa limosa limosa | |
| Uitdam | 11 | 3 | 1 | Limosa limosa limosa | |
| Polder Zeevang | 11 | 4 | 2 | Limosa limosa limosa | |
| Normerpolder | 7 | 4 | 4 | Limosa limosa limosa | |
| Overijssel/Zwolle | 10 | 4 | 4 | Limosa limosa limosa | |
| South-west Frysland | 38 | 12 | 7 | Limosa limosa limosa | |
| Vechtplassen | 2 | 1 | 1 | Limosa limosa limosa | |
| Idzegea | 18 | 4 | 0 | Limosa limosa limosa | |
| Germany (35) | Mid-Germany, Schneckenbruch | 3 | 2 | 2 | Limosa limosa limosa |
| Mid-Germany, Dummer | 20 | 7 | 6 | Limosa limosa limosa | |
| Northern Germany, Fohr | 11 | 3 | 3 | Limosa limosa limosa | |
| Northern Germany, Meggerdorf | 1 | 1 | 1 | Limosa limosa limosa | |
| Denmark (11) | Tipperne | 11 | 4 | 3 | Limosa limosa limosa |
| Belarus (6) | Belarus | 3 | 3 | 3 | Limosa limosa limosa |
| Moscow | 3 | 3 | 1 | Limosa limosa limosa | |
| Sweden (42) | Kristianstad/Faludden/Hummelbosholm/Oland | 42 | 4 | 2 | Limosa limosa limosa |
| Kazakhstan, SW Russia (23) | Novosibirsk | 5 | 2 | 0 | Limosa limosa limosa |
| Lake Ubinsky | 2 | 0 | 0 | Limosa limosa limosa | |
| Lake Sharkol | 5 | 2 | 1 | Limosa limosa limosa | |
| Lake Baituma | 2 | 1 | 0 | Limosa limosa limosa | |
| Lake Big Aksuhat | 1 | 0 | 0 | Limosa limosa limosa | |
| Lake Shoskaly | 2 | 2 | 2 | Limosa limosa limosa | |
| Juganski | 6 | 1 | 2 | Limosa limosa limosa | |
| Iceland (27) | W. Iceland | 27 | 5 | 3 | Limosa limosa islandica |
| Eastern Russia (3) | River Selenga Delta | 3 | 3 | 1 | Limosa melanuroides |
| Canada (2) | Churchill, Manitoba | 2 | 2 | 1 | Limosa heamastica |
Region, Sample location, number of samples per sample location used for microsatellite analysis (nuDNA), number of samples per sample location used for HVR mtDNA analysis (HVR), number of samples per sample location used for COI mtDNA analysis (COI) and the Limosa species or Limosa limosa subspecies per sample location.