Sampling date | The Sabellaria tube density (1) (tubes/m2) | The Sabellaria tube density (2) (tubes/m2) |
---|---|---|
September 2013 | 21,450 ± 800 | 157,100 ± 42,000 |
March 2014 | 28,325 ± 900 | 43,000 ± 14,600 |
June 2014 | 24,500 ± 900 | 61,000 ± 7200 |
August 2014 | 34,800 ± 1100 | 71,600 ± 5300 |