● | Soort aangetroffen | ○ | Soort niet aangetroffen | ‒ | Geen gegevens |
Waterlichaam | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Nieuwe Waterweg | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ○ | ○ | ● | ○ | ● | ● | ● | ● | ● | ● | ● | ● |
Noordelijke Deltakust (kustwater) | ‒ | ‒ | ● | ● | ○ | ● | ● | ● | ● | ● | ○ | ‒ | ● | ● | ● | ● | ● | ● | ‒ | ‒ | ‒ | ‒ | ‒ |
Veerse Meer | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ● | ● | ● | ● | ● | ‒ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
Waddenzee | ● | ● | ● | ‒ | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ○ | ● | ● | ● | ● | ○ |
Westerschelde | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ● | ○ | ● | ‒ | ○ | ● | ● | ● | ● | ● | ● | ● | ● | ○ | ○ | ● | ○ |