Table 1 Food variables (mean ± SE) within different habitats and foraging areas across winter seasons within the Shengjin and Caizi lakes
Habitat type | Period | Abundance (g∙m −2 ) | Depth (cm) | Penetrability (N∙cm −2 ) | Foraging area (km 2 ) |
|---|---|---|---|---|---|
Meadow | Early | 46.74 ± 6.17 | 6.51 ± 0.47 | 247.20 ± 4.60 | 5.03 |
Middle | 2932 ± 5.85 | 7.82 ± 0.70 | 290.63 ± 5.02 | 5.57 | |
Late | 82.75 ± 10.44 | 6.46 ± 0.50 | 219.41 ± 9.95 | 8.83 | |
Mudflat | Early | 29.32 ± 4.27 | 5.13 ± 0.52 | 51.38 ± 5.07 | 3.88 |
Middle | 18.08 ± 3.67 | 4.49 ± 0.52 | 141.82 ± 8.36 | 4.78 | |
Late | 7.79 ± 1.84 | 12.75 ± 0.65 | 87.16 ± 6.96 | 4.43 | |
Paddy field | Early | 87.20 ± 6.29 | 3.94 ± 0.39 | 14.59 ± 3.39 | 4.36 |
Middle | 54.84 ± 5.69 | 4.37 ± 0.41 | 22.06 ± 2.98 | 5.30 | |
Late | 27.58 ± 4.33 | 10.81 ± 0.51 | 114.71 ± 6.58 | 5.02 |