Table 1.
Mean number of bat calls per period ± SE and mean temperature (°C) ± SE per site from January through April 2012 (aindicates truncated season) and October through April 2012–2013 and 2013–2014. Mean number (#) of bat calls and temperature from sunrise to sunset are reported as “Day” and those from sunset to sunrise as “Night”. Hawkins and White caves were added to the sampling regime in winters 2012–2013 and 2013–2014. Mean activity at Blount cave during winter 2013–2014 is high due high call activity in October 2013 (b). The temperature meter at White cave malfunctioned in winter 2012–2013
| Cave | Time of day | Winter survey year | |||||
|---|---|---|---|---|---|---|---|
| 2011–2012a | 2012–2013 | 2013–2014 | |||||
| Mean # bat calls | Mean temp. °C | Mean # Bat Calls | Mean temp. °C | Mean # bat calls | Mean temp. °C | ||
| Blount | Day | 3.55 ± 0.34 | 15.03 ± 0.18 | 5.34 ± 0.29 | 8.95 ± 0.18 | 0.15 ± 0.07b | 11.67 ± 0.19 |
| Night | 21.74 ± 0.84 | 9.42 ± 0.17 | 6.69 ± 0.27 | 4.41 ± 0.16 | 8.64 ± 0.96b | 6.48 ± 0.16 | |
| Campbell | Day | 19.88 ± 3.16 | No temp meter | 0.15 ± 0.02 | 8.49 ± 0.16 | 1.63 ± 0.11 | 9.34 ± 0.21 |
| Night | 131.56 ± 8.33 | No temp meter | 11.22 ± 0.75 | 6.25 ± 0.12 | 17.67 ± 0.71 | 5.47 ± 0.15 | |
| Hawkins | Day | 0.50 ± 0.21 | 11.02 ± 0.21 | 0.50 ± 0.09 | 13.44 ± 0.26 | ||
| Night | 7.54 ± 0.80 | 4.08 ± 0.13 | 29.95 ± 1.37 | 4.83 ± 0.19 | |||
| Warren | Day | 7.39 ± 0.88 | No temp meter | 0.63 ± 0.10 | 10.65 ± 0.24 | 1.38 ± 0.25 | 5.57 ± 0.26 |
| Night | 87.13 ± 2.73 | No temp meter | 24.34 ± 0.96 | 7.33 ± 0.19 | 18.35 ± 1.15 | 5.23 ± 0.21 | |
| White | Day | 0.25 ± 0.06 | Meter broke | 0.10 ± 0.01 | 5.81 ± 0.17 | ||
| Night | 7.78 ± 0.44 | Meter broke | 2.48 ± 0.18 | 5.20 ± 0.14 | |||