Open Access
Table 2
The number of waters with licenced signal crayfish introductions and unlicensed observations in Finland according to national crayfisheries strategies. Unlicensed observations are further divided to two categories on the basis of whether they were located inside or outside the region designed for signal crayfish.
| Time | Total | Licensed | Unlicensed | Unlicensed | ||
|---|---|---|---|---|---|---|
| Inside area | Outside area | |||||
| Experimental introductions | 1967–1988 | 63 | 61 | 2 | – | – |
| 1st crayfisheries strategy | 1989–2000 | 413 | 343 | 70 | 50 | 20 |
| 2nd crayfisheries strategy | 2001–2013 | 360 | 78 | 282 | 203 | 79 |
| 3rd crayfisheries strategy | 2014–2016 | 36 | 2 | 34 | 30 | 4 |
| Total | 872 | 484 | 388 | 283 | 103 | |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.