● | Soort aangetroffen | ○ | Soort niet aangetroffen | ‒ | Geen gegevens |
Waterlichaam | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
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Grevelingen | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ● | ‒ | ‒ | ○ | ‒ | ○ | ‒ | ‒ | ‒ | ○ | ‒ | ○ | ‒ | ‒ | ○ | ‒ | ‒ |
Haringvliet-west | ○ | ‒ | ○ | ‒ | ○ | ‒ | ‒ | ‒ | ○ | ○ | ○ | ○ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ○ | ○ | ○ | ○ | ‒ | ○ | ○ | ○ | ● | ○ | ○ | ○ | ○ |
Nieuwe Maas | ● | ‒ | ● | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ |
Nieuwe Waterweg | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
Noordelijke Deltakust (kustwater) | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ● | ● | ● | ○ | ● | ● | ● | ● | ○ | ‒ | ○ | ● | ● | ● | ○ | ○ | ‒ | ‒ | ‒ | ‒ | ‒ |
Noordzeekanaal | ‒ | ● | ‒ | ● | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ● | ‒ | ‒ | ● | ○ | ● | ● | ‒ | ● | ● | ● | ● | ● | ● | ● | ● |
Oude Maas | ● | ‒ | ○ | ‒ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ |
Veerse Meer | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ● | ● | ● | ● | ● | ‒ | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
Waddenzee | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ● | ● | ● | ‒ | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
Westerschelde | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ‒ | ● | ● | ● | ‒ | ● | ● | ● | ● | ● | ● | ● | ● | ● | ○ | ● | ● | ● |