Atlantic Salmon Summit, 1-3 Octobre 2015 Huningue
Frédéric SCHAEFFER Association Saumon-Rhin (F) Association Saumon-Rhin (NGO)
Since 1992 : - Reintroduction of the atlantic salmon population in Alsace - Restauration and Study of the migratory fishes in the French Rhine-Meuse basins
Financial and Technical Partner of the French Program : 20 Years on the Upper Rhine
… 1995
2015 …
From Iffezheim to Strasbourg and futher… Iffezheim 2000 –Gambsheim 2006
Video
Exit
Catch system 3 Entry Video in operation
- 24h / 24h ≈ 365 days / year - Recording on detection - Manual counting and species identification Monitoring Results 198
100 94 90 90 Saumon 86 87 80 75 70 72 62 60 59 (53) 50 52 49 47 (50) 40
Nombre d'individus Nombre 30 (26) (23) 20 22
10 9 6 5 3 0 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015
> Fluctuation depends on stocking strategy & environnemental conditions (river and ocean)
> 1995-2015, more than 1000 salmons in the upper Rhine (French river, Rhine, other ?) Salmon’s return : what happened in 2015 ?
> Record of the number of salmon observed to Iffezheim (198 end August)
Upper Rhine Middle Rhine Loire-Allier Adour-Pyrénnée Bretagne Mean value 5 Years 63 651 1460 Maximum 94 1177 1788 Year 2015 198 1238 2730 Ratio Mean/2015 3,1 to soon 1,9 1,9 Stable
> Work, wait and see… Some details about salmon results
Periodicity of Salmon Migration 24
22 moyenne Iffezheim 2004-2013 Mini 20 Maxi 18 Iffezheim 2014
16 Gambsheim 2014
14
12
10
Effectifs 8
6
4
2
0
31 juil 31
15 juil 15
15 fév 15 oct 15
28 fév 28 oct 31
15 avr 15
30 avr 30
15 juin 15 -
30 juin 30
-
15 nov 15
31 mai 31 nov 30 déc 31
15 mai 15 15 déc 15
- -
- -
-
-
31 janv 31
15 janv 15
30 sept 30
-
15 sept 15
-
-
15 aout 15
- - -
31 aout 31
- -
1
-
-
15 mars 15
1 - 1
31 mars 31
-
1
-
-
1
1
1 1
-
-
16
1
1 16 16
16 1
16
16 16 16
1
16
16
16 16 More details about salmon results History and evolution of salmon’s return
Effectifs Iffezheim Effectifs Gambsheim Lmoy Iff (cm) Lmoy Gam (cm) %moy MSW Gam-Iff
100 100 94 91 91 90 90 85 90 86 82 82 83 87 83 80 80 82 79 80 78 78 78 77 76 77 77 75 75 77 72 73 77 70 71 70 68 67 64 61 60 59 60 57
Effectifs 50 51 50
40 40 % MSW% / Lmoy (cm)
30 30
20 20 17 10 10 4 0 0 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
Gambsheim 2014 : 60 salmons 27% 1SW – Lmean = 70 cm ; 63% 2SW (73-87cm) – Lmean = 77 cm ; 10% 3SW – Lmean = 93 cm Symposium Bâle 2015
Upper Rhine Map and Video stations 2000
2006 2015
2016
2015
2016 Natural Reproduction : Monitoring methods
Prospecting Hot spot on foot almost daily then realized by boat on all the accessible section
Electric fishing before stocking and genetic analyses
90 % of the genetic analyses show that salmons are related to the “Allier” origin Natural Reproduction results Wieslauter
1995 &1997 ponctual observations of natural Murg reproduction in the river Bruche Rench
Since 2000 reproduction every year Kinzig on the Bruche
Improvement of the ecological continuity :
• Farther on the Bruche, • Other river like Lauter, Moder, Ill… • Fecht (since 2010)
In Germany too … ! Others monitoring system – Fish Telemetry (ASR-EDF)
RFID/HDX transponder Rhine - 3 Fishpass Iffezheim > Strasbourg Rhine - Downstream Plan Breisach Ill - Huttenheim (F) Mosel – Fishpass Koblenz (D) And more … ?
Nedap technology (NL) : 8 stations Iffezheim > Kembs ≈ 30 Rhine Delta (NL) RFID/HDX transponder
Small Tag (23 or 32 mm – 0,3 or 0,5 g – Ø3 mm) - Low cost > But short distance of detection
Different studies :
- Iffezheim to Gambsheim : Duration of the migration and choice of the fishpass entry (migratory salmonids) - Gambsheim : Test fishpass entry attractivities and crossing (barbel, bream, eel…) - Huttenheim : Comparison of the type of passes for eel - Brisach : Salmon smolts and silver eel migration through downstream plan NL Nedap station Cours d’eau “naturel” Grand Canal d’Alsace
(Big Tag : P : 26,5 g - L : 62 mm - Ø : 15 mm) Déviation du Rhin Rhin Antennes NEDAP n°7-8 : Aménagements en enfilade pk 335 Iffezheim Aménagements en « festons» Aim : Study of the migratory rhythms of the Aménagements en ligne silvery eel and the ways of crossing of the Antennes NEDAP installées Gambsheim hydraulic arrangements Sonde multi-paramètres (T°c, turbidité, conductivité) Antenne NEDAP n°6 : pk 294,300
Strasbourg - 2010-2014 : ≈ 900 eel Strasbourg
- About 30 detected in NL > 3% Gerstheim Ill - Downstream migration duration between 13 days and more than 1 year Rhinau
Marckolsheim Antenne NEDAP n°5 : pk 231,700 Colmar > Maybe use for salmon ? Vogelgrun
Fessenheim
Ottmarsheim
Kembs
Bâle Conclusion : Salmon Symbol
- Success of salmon’s comeback on the upper Rhine - Return of other migratory fishes 450 Salmon Saumon 400 Sea trout Truite de mer Allis shad Grande Alose 350 Sea lamprey Lamproie marine
300
250
200
Nombre d'individus Nombre 150
100
50
0 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
- More than 30 species observed through Rhine video station - about 40 000 fishes / year Conclusion : a success but not enough
- Ecological continuity improves (slowly) but the problem of downstream mortalities is not yet solved (eel number upper rhine 25 000 > 7 000 / year)
- Number of salmon returners is still not enough for the species sustainability Atlantic Salmon Summit, 1-3 Octobre 2015 Huningue
Salmon comeback & Migratory fish protection
Yes, together we can !
2015 : First salmon seen on Video station Huttenheim - ILL