Open Access
Table 7.
Number of lost snail habitats in 2013–2016 in relation to the cause of population decline and the type of habitat. A/B, habitats colonized by Galba truncatula/sites inhabited by Omphiscola glabra.
| Parameters | Number of lost habitats: A/B*
|
|||||
|---|---|---|---|---|---|---|
| Open drainage |
Road ditches (260/92) | Spring heads (192/83) | Streams (43/13) | Pools & ponds (30/9) | ||
| Furrows (434/52) | Ditches (59/9) | |||||
| Mechanical cleaning | 193/22 | 25/5 | 226/80 | 6/2 | 1/1 | 0/0 |
| Subsurface drainage | 166/13 | 21/2 | 0/0 | 11/9 | 1/0 | 0/0 |
| Gyro-crushing of vegetation | 43/6 | 4/1 | 27/11 | 172/66 | 4/1 | 3/2 |
| Creation of ponds | 21/7 | 5/1 | 0/0 | ¾ | 0/0 | 0/0 |
| Drying out of ponds | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 | 19/4 |
| Straightening of banks | 0/0 | 3/0 | 0/0 | 0/0 | 38/11 | 7/3 |
| Not determined | 11/4 | 1/0 | 7/1 | 0/2 | 1/0 | 1/0 |
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