Table 2 The annual mean value of Secchi depth and estimated lower depth of Z. marina
2010 | 2011 | 2012 | 2013 | |
|---|---|---|---|---|
Secchi depth (m) | 6.3 ± 1.6 | 6.9 ± 1.8 | 7.7 ± 1.5 | 8.9 ± 2.9 |
Z. marina depth limit (m) | 6.8 ± 1.8 | 7.6 ± 2.0 | 8.4 ± 1.6 | 9.8 ± 3.1 |
2010 | 2011 | 2012 | 2013 | |
|---|---|---|---|---|
Secchi depth (m) | 6.3 ± 1.6 | 6.9 ± 1.8 | 7.7 ± 1.5 | 8.9 ± 2.9 |
Z. marina depth limit (m) | 6.8 ± 1.8 | 7.6 ± 2.0 | 8.4 ± 1.6 | 9.8 ± 3.1 |