Table 2
Characteristics of the 43 monitoring stations. Num: the station identification number (see Fig. 1). Latitude is in °N. Year: the counting period for each station. The last three columns describe: (F.) the presence of a commercial or recreational gear fishery in the river downstream of the monitoring station; (S.) the presence of a salmon stocking programme influencing the counting; and (EC.) an observed improvement in ecological continuity of the river over the study period. Based on expert opinion, ‘X’ indicates that the factor may have influenced fish counts, while ‘–‘ indicates the factor was not present or was likely to have no influence.
| Num | Station name | River | Catchment | Latitude | Year | F. | S. | EC. |
|---|---|---|---|---|---|---|---|---|
| 1 | Eu | Bresle | Bresle | 50.05048 | 1984-2016 | X | – | – |
| 2 | Breuil-en-Auge | Touques | Touques | 49.22833 | 2005-2015 | – | – | X |
| 3 | Claies-de-Vire | Vire | Vire | 49.17829 | 2002-2015 | – | – | X |
| 4 | May-sur-Orne | Orne | Orne | 49.10641 | 2004-2016 | – | – | X |
| 5 | Iffezheim | Rhin | Rhin | 48.83252 | 2003-2015 | X | X | – |
| 6 | Gambsheim | Rhin | Rhin | 48.68441 | 2006-2015 | – | X | – |
| 7 | Cérisel | Oir | Oir | 48.62772 | 1983-2016 | – | – | – |
| 8 | Pont es Omnes | Frémur | Frémur | 48.57771 | 1996-2016 | – | – | – |
| 9 | Bois Joli | Frémur | Frémur | 48.57273 | 1996-2016 | – | – | – |
| 10 | Kerhamon | Elorn | Elorn | 48.46253 | 2007-2016 | – | X | – |
| 11 | Moulin du Vivier | Loysance | Loysance | 48.44941 | 1996-2010 | – | X | – |
| 12 | Châteaulin | Aulne | Aulne | 48.19670 | 1999-2015 | – | – | – |
| 13 | Moulin Neuf | Pont l’Abbé | Pont l'Abbé | 47.88601 | 2002-2016 | – | – | – |
| 14 | Moulin des Princes | Scorff | Scorff | 47.83691 | 1993-2016 | – | – | – |
| 15 | Malon | Vilaine | Vilaine | 47.79868 | 1998-2008 | – | – | – |
| 16 | Arzal | Vilaine | Vilaine | 47.49942 | 1995-2016 | X | – | – |
| 17 | Boisse | Vendée | Sèvre niortaise | 46.44812 | 1994-2013 | – | – | – |
| 18 | Massigny | Vendée | Sèvre niortaise | 46.42023 | 1994-2007 | – | – | – |
| 19 | Boule d’Or Cinq Abbés | 5 abbés | Sèvre niortaise | 46.38675 | 1994-2013 | – | – | – |
| 20 | Boule d'Or Vendée | Vendée | Sèvre niortaise | 46.38666 | 1994-2013 | – | – | – |
| 21 | Cinq Abbés | 5 abbés | Sèvre niortaise | 46.33184 | 1996-2017 | X | – | – |
| 22 | Contreboth de Vix | tidal barrier | Sèvre niortaise | 46.32360 | 1996-2011 | X | – | – |
| 23 | Marais Pin | Sèvre niortaise | Sèvre niortaise | 46.32353 | 2008-2017 | – | – | – |
| 24 | Enfreneaux | Sèvre niortaise | Sèvre niortaise | 46.31705 | 1994-2017 | X | – | – |
| 25 | Descartes | Creuse | Loire | 46.97526 | 2007-2017 | X | X | X |
| 26 | Decize | Loire | Loire | 46.83825 | 1998-2017 | X | X | X |
| 27 | Châtellerault | Vienne | Loire | 46.81105 | 2004-2017 | X | X | X |
| 28 | Gueugnon | Arroux | Loire | 46.60957 | 2006-2017 | – | X | – |
| 29 | Vichy | Allier | Loire | 46.14205 | 1997-2017 | X | X | X |
| 30 | Poutès | Allier | Loire | 44.94727 | 1986-2016 | – | X | X |
| 31 | Mauzac | Dordogne | Garonne-Dordogne | 44.85417 | 2004-2015 | – | X | X |
| 32 | Tuilières | Dordogne | Garonne-Dordogne | 44.84494 | 1993-2015 | X | X | X |
| 33 | Golfech | Garonne | Garonne-Dordogne | 44.10992 | 1993-2015 | X | X | X |
| 34 | Bazacle | Garonne | Garonne-Dordogne | 43.60405 | 1993-2015 | – | X | X |
| 35 | Carbonne | Garonne | Garonne-Dordogne | 43.28901 | 2000-2015 | – | X | – |
| 36 | Uxondoa | Nivelle | Nivelle | 43.36123 | 1996-2017 | X | – | – |
| 37 | Olha | Nivelle | Nivelle | 43.34460 | 1996-2017 | X | – | – |
| 38 | Sorde-l'Abbaye | Gave d'Oloron | Adour | 43.52852 | 1996-2012 | X | X | – |
| 39 | Artix | Gave de Pau | Adour | 43.38589 | 2005-2016 | X | X | X |
| 40 | Guerlain | Gave d'Oloron | Adour | 43.25641 | 1996-2012 | X | X | X |
| 41 | Chéraute | Saison | Adour | 43.23729 | 1996-2014 | X | X | – |
| 42 | Soeix | Gave d'Aspe | Adour | 43.15991 | 1996-2017 | X | X | X |
| 43 | Saint-Cricq | Gave d'Ossau | Adour | 43.10887 | 2002-2011 | X | X | X |
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