Numerical Response of Migratory Shorebirds to Prey Distribution in a Large Temperate Arid Wetland, China

Table 3

Mean ± SD values of the principal substrate quality characteristics across the three sampling sites within the lake (Gesuer (GSE), Hekou (HK), and Xiaohaizi (XHZ)) in sediments from depths of 0–5 and 5–10 cm (, 12, and 6 for GSE, HK, and XHZ, respectively).

Substrate characteristic	GSE		HK		XHZ
	0–5 cm	5–10 cm	0–5 cm	5–10 cm	0–5 cm	5–10 cm
Organic matter (%)	1.33 ± 0.62	1.17 ± 0.43	3.22 ± 1.36	1.97 ± 0.85	2.30 ± 1.03	1.59 ± 0.54
N (mg/kg)	1362 ± 703	717 ± 202	1508 ± 637	1403 ± 863	1134 ± 370	1001 ± 242
P (mg/kg)	916.2 ± 69.6	972.30 ± 83.84	835.85 ± 59.16	818.98 ± 54.06	804.53 ± 29.72	866.23 ± 54.65
As (mg/kg)	21.14 ± 5.81	25.98 ± 7.56	9.20 ± 1.99	12.30 ± 3.60	29.68 ± 4.26	35.30 ± 5.98
Co (mg/kg)	10.67 ± 2.30	12.20 ± 2.44	8.92 ± 1.39	9.46 ± 1.13	11.49 ± 0.52	12.81 ± 0.59
Cu (mg/kg)	26.63 ± 6.19	30.93 ± 10.82	19.69 ± 4.10	21.12 ± 3.51	33.26 ± 3.84	37.20 ± 11.71
Li (mg/kg)	40.60 ± 5.47	44.46 ± 6.72	37.08 ± 8.14	37.44 ± 6.51	49.78 ± 2.20	51.97 ± 3.27
Ni (mg/kg)	30.28 ± 6.72	34.61 ± 7.59	26.74 ± 4.64	27.94 ± 4.29	31.25 ± 1.48	34.63 ± 2.89
Hg (mg/kg)	0.01 ± 0.00	0.02 ± 0.00	0.01 ± 0.01	0.01 ± 0.00	0.01 ± 0.00	0.01 ± 0.00