Species: Grisetang (Ascophyllum nodosum)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|
| 2024 | 1 | 2 | 2 | 4 |
| 2023 | 1 | 1 | 1 | 4 |
| 2022 | 1 | 2 | 2 | 7 |
| 2021 | 1 | 7 | 5 | 23 |
| 2020 | 1 | 13 | 10 | 43 |
| 2019 | 1 | 16 | 11 | 74 |
| 2018 | 1 | 13 | 10 | 57 |
| 2017 | 1 | 11 | 11 | 36 |
| 2016 | 1 | 11 | 11 | 39 |
| 2015 | 1 | 11 | 8 | 36 |
| 2014 | 1 | 17 | 12 | 42 |
| 2013 | 1 | 11 | 9 | 26 |
| 2012 | 1 | 4 | 4 | 19 |
| 2011 | 1 | 1 | 1 | 6 |
| 2010 | 1 | 2 | 2 | 5 |
| 2009 | 1 | 4 | 4 | 30 |
| 2008 | 1 | 4 | 3 | 21 |
| 2007 | 1 | 6 | 5 | 20 |
| 2006 | 1 | 7 | 6 | 22 |
| 2005 | 1 | 6 | 5 | 36 |
| 2004 | 1 | 16 | 10 | 59 |
| 2003 | 1 | 8 | 7 | 74 |
| 2002 | 1 | 10 | 10 | 59 |
| 2001 | 1 | 18 | 16 | 83 |
| 2000 | 1 | 24 | 23 | 140 |
| 1999 | 1 | 29 | 27 | 130 |
| 1998 | 1 | 59 | 55 | 284 |
| 1997 | 1 | 88 | 80 | 571 |
| 1996 | 1 | 152 | 145 | 1057 |
| 1995 | 1 | 186 | 172 | 1274 |
| 1994 | 1 | 241 | 222 | 1765 |
| 1993 | 1 | 267 | 249 | 1889 |
| Totalt alle år | 1 | 497 | 427 | 7935 |