MEDIAS A protocol for acoustic surveys in Mediterranean sea • History – Acoustic surveys are performed by each country around the Mediterranean basin. There is a need to harmonize the protocol of these surveys for further comparisons of the results issued from different areas. • Objective – Adopt a common Protocol for a Pan- Mediterranean Acoustic survey (MEDIAS) within the Framework of the DCR according to the recommendation of RCM for Mediterranean and the decision of the Liaison Meeting Palma de Majorque 22- 24/11/2010
MEDIAS A protocol for acoustic surveys in Mediterranean sea History –Acoustic surveys are performed by each country around the Mediterranean basin. There.
Mar 26, 2015
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
MEDIASA protocol for acoustic surveys in
Mediterranean sea• History
– Acoustic surveys are performed by each country around the Mediterranean basin. There is a need to harmonize the protocol of these surveys for further comparisons of the results issued from different areas.
• Objective– Adopt a common Protocol for a Pan-Mediterranean
Acoustic survey (MEDIAS) within the Framework of the DCR according to the recommendation of RCM for Mediterranean and the decision of the Liaison Meeting
Palma de Majorque 22-24/11/2010
Small pelagics in the Gulf of Lion
• Total small pelagic species biomass fluctuates a lot between 1993 and 2010 with the highest level in 2005 with more than 472000 tons
• Protocol of acoustic survey is the same since 1993 and follows Medias one
• Pelagic species assessed are :– Anchovy and sardine in first priority
– Other one’s if present in the area
Jlb : HelloJlb : Hello
Palma de Majorque 22-24/11/2010
N/O L’EUROPE - Survey PELMED
GSA 07 Gulf of LionThe surface of Gulf of Lion is 3300 Nm²
We did acoustic survey in july with L’Europe (30m) at 8 knots on parallel transects from depth 10 m to 200 m.
Transects spaced 12 Nm. EDSU=1Nm
We did survey and hauls in day time during 26 days
2 hauls used (Vo 15 m and 7 m, 12 mm of mesh side)
Sounder ER60 38, 70, 120 and 200 KHz. Data format .hac
Threshold for acquisition : -80 db
Threshold for assessment : -60 db
Pulse duration : 1024 µs
1 calibration during the survey
Palma de Majorque 22-24/11/2010
Pelmed08 - July
Pelmed09 - July
Pêche - Captures par espèces par chalutageSARD-PIGSARD-PIPENGR-ENGSARI-AURSCOM-SCOSCOM-JAPSPRA-SPRTRAC-MEGTRAC-MEPTRAC-TRGTRAC-TRPTRAC-PICDIVE-RS1
Pelmed10 - July
Type d’opération Nombre Remarques
Milles parcourus en acquisition acoustique 2176 Movies+ ER60 (38, 70, 120 kHz et 200 kHz), EK500 12 KHz
Chalutages pélagiques 4PM159 38
Chalutages de fond 4FF176 5 Par sonde inférieure à 40 m
CTD 47 Profils bathymétriques (T°C, S‰, P)
T°C et S‰ 2176 Enregistrement continu en sub-surface durant 2176 Mn
Prélèvement d'otolithes d'anchois 200 Congélation d’anchois issus de 13 chalutages
Prélèvement d'otolithes de sardine 200 Inclusion d'otolithes issus de 13 chalutages
Biométrie de merlu 300 de 10 à 46 cm, pour lecture des otolithes. Action MERLUMED
Maturité et âge
Nom vernaculaire code
Nbre de Ch où l'espèce est présente
Nbre d'individusmesurés
Nbre d'individusmesurés
Nbre d'éch.Pesés
Nbre d'éch. prélevéspour stade de maturité etinclusion d'otolithes
Anchois ENGR ENC 29 3216 3216 206 200Sardine Petite SARD PIP 21 1717 1717 151 30Sardine Grosse SARD PIG 33 660 660 161 170Sprat SPRA SPR 21 1395 1305 104Sardinelle SARI AUR 4 28 28 14Chinchard commun TRAC TRP 21 591 591 90Chinchard commun TRAC TRG 9 86 86 52Chinchard méditerranéen TRAC MEP 19 302 302 100Chinchard méditerranéen TRAC MEG 15 98 98 70Maquereau commun SCOM SCO 25 198 198 117Maquereau espagnol SCOM JAP 24 220 220 102Merlu MERL MER XX XX XX XX 173
Espèce GFL-2009 Présence Relation taille-poids
PELMED - Evolution of mean déviations in sA
0
100
200
300
400
500
600
700
800
900
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
Years
me
an
sA
(m
²/N
M²)
DTotsA
D2sA
D4sA
D1sA
D3sA
D5sA
D6sA
D7sA
Anchois
0
20 000
40 000
60 000
80 000
100 000
120 000
140 000
1993
1995
1997
1999
2001
2003
2005
2007
2009
Années
Bio
mas
se (
t)
Biomasse
Bio - Ec
Bio + Ec
Sardine
0
50 000
100 000
150 000
200 000
250 000
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
Années
Bio
mas
se (
t)
Biomasse
Bio - Ec
Bio + Ec
Sprat
02 0004 0006 0008 000
10 00012 00014 00016 000
1993
1995
1997
1999
2001
2003
2005
2007
2009
Années
Bio
mas
se (
t)
Biomasse
Bio - Ec
Bio + Ec
Sardinelle
02 0004 0006 0008 000
10 00012 00014 00016 000
1993
1995
1997
1999
2001
2003
2005
2007
2009
Années
Bio
mas
se (
t)
Biomasse
Bio - Ec
Bio + Ec
Chinchard méditerranéen
02 0004 0006 0008 000
10 00012 00014 00016 000
1993
1995
1997
1999
2001
2003
2005
2007
2009
Années
Bio
mas
se (
t)
Biomasse
Bio - Ec
Bio + Ec
Maquereau français
0
50 000
100 000
150 000
200 000
250 000
300 000
1993
1995
1997
1999
2001
2003
2005
2007
2009
Années
Bio
mas
se (
t)
Biomasse
Bio - Ec
Bio + Ec
Maquereau espagnol
02 0004 0006 0008 000
10 00012 00014 00016 000
1993
1995
1997
1999
2001
2003
2005
2007
2009
Années
Bio
mas
se (
t)
Biomasse
Bio - Ec
Bio + Ec
02 0004 0006 0008 000
10 00012 00014 00016 000
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
Années
Bio
mas
se (
t)
Biomasse
Bio - Ec
Bio + Ec
Chinchard commun
Small pelagics stock assessment
• Estimated biomass for 2009 and 2010– Anchovy : 31 736 and 24 991 tonnes
– Sardine : 58 253 and 41 091 tonnes
Low level of sardine biomass after the peak of 2005
– Anchovy biomass increase after 4 years of stability
Palma de Majorque 22-24/11/2010
Biomass and landings of anchovyin the gulf of Lion
0
20 000
40 000
60 000
80 000
100 000
120 000
1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Years
Bio
mas
s an
d l
and
ing
s(M
T)
Biomass
Biom - Sd
Biom + Sd
Landings
Pelmed survey in the gulf of Lion
Length and age structure for anchovyYears 2000 to 2010
PELMED00
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5Lt (cm)
Nb
/100
0
PELMED01
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5Lt (cm)
Nb
/100
0
PELMED02
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5Lt (cm)
Nb
/100
0
²
PELMED03
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5
Lt (cm)
Nb
/100
0
PELMED04
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5Lt (cm)
Nb
/100
0
0
1 250 000
2 500 000
3 750 000
5 000 000
0 1 2 3 4AGE
Nb
/ 10
00
0
1 250 000
2 500 000
3 750 000
5 000 000
0 1 2 3 4
AGE
Nb
/ 100
0
PELMED05
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5Lt (cm)
Nb
/100
0
PELMED06
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5Lt (cm)
Nb
/100
0
PELMED07
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5Lt (cm)
Nb
/100
0
PELMED08
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5Lt (cm)
Nb
/100
0
0
1 250 000
2 500 000
3 750 000
5 000 000
0 1 2 3 4
AGE
Nb
/100
0
0
1 250 000
2 500 000
3 750 000
5 000 000
0 1 2 3 4AGE
Nb
/100
0
0
1 250 000
2 500 000
3 750 000
5 000 000
0 1 2 3 4AGE
Nb
/100
0
0
1 250 000
2 500 000
3 750 000
5 000 000
0 1 2 3 4
AGE
Nb
/100
0
PELMED09
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5Lt (cm)
Nb
/100
0
PELMED10
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5
LT (cm)
Nb
/100
0
0
1 250 000
2 500 000
3 750 000
5 000 000
0 1 2 3 4
AGE
Nb
/100
0
Biomass and landings of sardinein the gulf of Lion
0
50 000
100 000
150 000
200 000
250 000
1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
Years
Biomass and landings(MT)
Biomass
Biom - Sd
Biom + Sd
Landings
Pelmed02
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21
Lt (cm)
Nb
/100
0
Pelmed03
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21
Lt (cm)
Nb
/100
0
Pelmed04
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21
Lt (cm)
Nb
/100
0
Pelmed05
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21
Lt (cm)
Nb
/100
0
Pelmed06
0
500 000
1 000 000
1 500 000
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Lt (cm)
Nb
/000
PELMED07
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21
Lt (cm)
Nb
/100
0
Pelmed06
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21
Lt (cm)
Nb
/100
0
Les graphes ci dessus se collent en image dans Word : 2000 à 2002 sur 1 page, 2003 à 2006 sur une autre pageSélectionner de R78 à AF151, copier, coller l'image dans wordSélectionner de R1 à AF74, copier, coller l'image dans wordArial 10 pour les axes, 18 (14 ?) pour le titre
Pelmed06
0
500 000
1 000 000
1 500 000
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Lt (cm)
Nb
/000
PELMED07
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21
Lt (cm)
Nb
/100
0
PELMED08
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21
Lt (cm)N
b/1
000
Pelmed06
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21
Lt (cm)
Nb
/100
0
PELMED09
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21
Lt (cm)
Nb
/100
0
PELMED10
0
500 000
1 000 000
1 500 000
2 000 000
2 500 000
6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21Lt (cm)
Nb
*100
0
Pelmed survey in the gulf of Lion
Length structure for sardineYears 2000 to 2010
Thank you for your attention
Related Documents
