Trial, stocking and

termination date

Numbera (95% CI)

Apparent annual

survival (φ ± 95% CI)a

Final or minimum (min) number observed

Annual survival

Trial 1

Oct 2006 stock

79b (NC)

0.78 (0.71 - 0.83)

Jan 2009 terminate

42 (34 -50)

39 (final)

0.75

Trial 2

Mar 2009 stock

80 (NC)

0.86 (0.82 - 0.89)

Spring 2012

50 (44 - 57)

42 (min)

0.81 (min)

not estimatedc

Spring 2013 terminate

26 (16 - 35)

Trial 3

Mar 2008 stock

20 (NC)

0.93 (0.86 - 0.96)

Spring 2013 terminate

14 (10 - 17)

13 (min)

0.92 (min)