Species | 1949-1959 | 1960-1980 | 1997-2007 | 2014-2015 |
---|---|---|---|---|
0.8H, R | +R | 0.6H, R | 1.7 | |
0.9H, R | +R | 0.5H, R | 2.0 | |
0.9H, R | +R | 0.7H, R | 2.0 | |
0.9H, R | +H, R | 0.4H, R | 0.1 | |
+H | +H | – | – | |
– | +R | +H | – | |
– | +H, R | – | – | |
– | – | 0.6H, R | 0.9 | |
– | – | 0.2H, R | 0.1 | |
– | – | 0.1H, R | 1.2 |
Study period | Sampling method | Number of transects and sites | Depth range (m) | Geographic extent | Reference |
---|---|---|---|---|---|
1949-1959 | six-toothed hook, inspection of fishing nets | 35 sites (26 – littoral part, 4 – middle part, 5 –relevés); 15 littoral sites in the recent study area | 0-4 | Entire lagoon (except the south-eastern part) | |
1960-1980 | no data | no data | no data | Eastern Lithuanian part along the Nemunas River Delta and the south-eastern Russian part | |
1997-2007 | six-toothed hook | 22 transects and 13 sites (littoral part) | 0-2 | Lithuanian part | |
2014-2015 | double-headed rake, snorkeling | 27 transects and 12 sites (littoral part) | 0-3 | Lithuanian part | this study |