Table 4. Number of amphibian recordings in the tunnels, and the net number passing through per night or 24 h-period.
Site 1. Skårby (only newts, five nights during peak migration period) | |||||
---|---|---|---|---|---|
Tunnel no. | S newt | GC newt | Both sp. | Net no./night | |
1 | 473 | 145 | 618 | 123.6 | |
2 | – | – | – | – | |
3 | 21 | 28 | 49 | 9.8 | |
4 | 612 | 90 | 702 | 140.4 | |
5 | 111 | 5 | 116 | 23.2 | |
Sum | 1,217 | 268 | 1,485 | 297.0 |
Note:
For sites 2–3 (cameras) data are separated between animals moving into the tunnel (i.e., toward the breeding wetland) and those moving out (away from the wetland). At site 1 (traps), only animals moving toward the wetland could be counted, as net traps blocked the tunnels in the other direction. Tunnels that were not monitored are indicated by lack of data.