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Table 3 The observed dietary niche overlap among the four crane species at Poyang Lake in the winters of 2017 and 2018. P (Obs < = null) and P (Obs > = null) indicate the tail probabilities for the observed index, which were lower and higher than the histogram of the simulated index, respectively. * represents P < 0.05, and ** represents P < 0.01

From: Influences of submerged plant collapse on diet composition, breadth, and overlap among four crane species at Poyang Lake, China

Winter   Observed niche overlap index P (Obs < = null) P (Obs > = null)
2017 Siberian vs. White-naped 0.21 0.819 0.181
Siberian vs. Hooded 0.02 0.703 0.297
Siberian vs. Eurasian 0.16 0.900 0.100
White-naped vs. Hooded 0.49 0.952 0.048
White-naped vs. Eurasian 0.35 0.895 0.106
Hooded vs. Eurasian 0.35 0.919 0.081
2018 Siberian vs. White-naped 0.63 0.952 0.048*
Siberian vs. Hooded 0.66 0.952 0.048*
Siberian vs. Eurasian 0.62 0.950 0.049*
White-naped vs. Hooded 0.99 0.997 0.003**
White-naped vs. Eurasian 0.89 0.987 0.013*
Hooded vs. Eurasian 0.90 0.998 0.002**