Spotted Crake habitat use 125
©Wildfowl & Wetlands Trust
Wildfowl
(2013) 63: 115–134
Table 2.
Statistical comparisons of mean ± 95% confidence intervals water depths and vegetation heights (with sample sizes in
parentheses) from vegetation quadrats taken within those sections of the management areas that fell within the minimum convex
polygons used by each of the radio-tagged Spotted Crakes at Lille Vildmose (identified by territory) and those that did not.
With crakes
Without crakes
t-
statistic
P
value
Water depth (cm)
Terr. 1
26.3 ± 2.69 (160)
19.7 ± 1.91 (200)
t
295
= 3.9
< 0.001
Terr. 2
7.7 ± 1.20 (410)
4.2 ± 0.67 (100)
t
165
= 5.0
< 0.001
Terr. 3
10.0 ± 1.12 (410)
7.4 ± 0.44 (110)
t
145
= 4.2
< 0.001
Mean veg height (cm)
Terr. 1
82.4 ± 6.16
(80)
81.8 ± 6.92 (100)
t
177
= 0.1
0.45 (n.s.)
Terr. 2
71.1 ± 11.48 (205)
61.1 ± 5.78 (50)
t
76
= 1.5
0.07 (n.s.)
Terr. 3
110.8 ± 15.17 (205)
126.9 ± 8.46 (55)
t
91
= 1.8
0.04
