Table 1. Number of samples, sampling period and availability of data used in the present study.
| Great Britain | North Sea 1 | North Sea 2 | Wester-schelde | Zee-schelde | Belgian Beaches | Belgium Offshore | German Baltic | Estonia | Cabras Lagoon | Venice Lagoon | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of samples | 126 | 30 | 84 | 2089 | 104 | 343 | 131 | 1012 | 1549 | 76 | 285 |
| Sampling period | 2001-2011 | 2000-2004 | 2008-2011 | 2000-2008 | 1990-2011 | 1994-1995 | 2005-2010 | 2001-2011 | 2003-2009 | 2001-2004 | 1991-2002 |
| Availability | On request | On request | On request | On request | On request | On request | On request | On request | On request | On request | On request |
| Responsible author | CG | HR | MLZ | TY | JS | SD | GVH | MLZ | JK | PM | DT |