Table 5 CEFAS water sample results for four toxic marine microalgae species from 1999-2009 in Wales and England
| Â | Â | Dinophysis spp. | Prorocentrum spp. | Alexandrium spp | Pseudo-nitzschia | Â | |||
|---|---|---|---|---|---|---|---|---|---|
| Â | No. water samples tested | % Present | %> limit | % Present | %> limit | % Present | % Present | %> limit | Reference |
April 1999 - March 2000 | 320 | NA | 1 (0.3%) | NA | NA | 4 (1.3%) | NA | 0 | [49] |
April 2000 - March 2001 | 350 | 25 (7.1%) | 2 (0.6%) | NA | NA | NA | 15 (4.3%) | 0 | [56] |
April 2001 - March 2002 | 195 | NA | 0 | NA | NA | NA | 14 (7.2%) | 0 | [57] |
April 2002 - March 2003 | 1529 | 23 (1.5%) | 1 (0.1%) | NA | NA | NA | 50 (3.3%) | 0 | [58] |
April 2003 - March 2004 | 388 | 0 | 0 | NA | NA | 13 ( 3.4%) | 18 (4.6%) | 0 | [59] |
April 2004 - March 2005 | 314 | 6 (1.9%) | 1 (0.3%) | 6 (1.9%) | 1 (1.9%) | 6 (1.9%) | 28 (8.9%) | 0 | [50] |
April 2005 - March 2006 | 737 | 23 (3.1%) | 7 (0.9%) | 3 (0.4%) | 1 (0.1%) | 80 (10.9%) | 277 (37.6%) | 3 (0.4%) | [60] |
April 2006 - March 2007 | 879 | 83 (9.4%) | 31 (3.5%) | 10 (1.1%) | 5 (0.6%) | 150 (17.1%) | 374 (42.5%) | 32 (3.6%) | [61] |
April 2007 - March 2008 | 1122 | 18 (1.6%) | 4 (0.4%) | 3 (0.3%) | 0 | 139 (12.4%) | 570 (50.8%) | 4 (0.4%) | [62] |
April 2008 - March 2009 | 1079 | 25 (2.3%) | 4 (0.4%) | 11 (1.0%) | 5 (0.5%) | 75 (6.9%) | 438 (40.6%) | 21 (1.9%) | [51] |