ifremer : sophie leonardi, emilie leblond, patrick berthou, youen vermard, martial laurans cefas :...
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Ifremer : Sophie Leonardi, Emilie Leblond, Patrick Berthou, Youen Vermard, Martial Laurans
Cefas : Georg Engelhard, Fabrizio Manco
Action 6.1. Exploitation data
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Objectives
Exploitation data in CHARM 3 Atlas :Fishing effort and landings for main gears and
main exploited species Using different available data sources
• Community Fishing Fleet Register• Logbook : long-term information, coarse scale (ICES rectangle)• VMS : from 2005 only, fine-scale effort data
Common UK-FR methodology and presentation• Common concepts (fleet / metier…) and referential data (gear,
species…)• Comparison of FR and UK data availability• Common methodology for data analyses (especially for VMS )
Underlining the lack of information and the reliability of data : • Logbooks and VMS are not exhaustive identification of
percentage of vessels without logbooks among the whole fishing fleet active in the Channel
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Our approach
Comprehensive view of vessels active in the Channel
(FR, UK, foreign)
Vessels characteristics
Reliability of dataMain gears Main species
Vessels characteristicsFishing effortLandings
Vessels characteristicsLandings
Percentage of vessels transmitting log-booksor national fishing forms
Specific methodologies for :• Identification and selection of vessels active in the
Channel• VMS data analyses
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Data sources
How can we identify vessels active in the Channel that do not return log-books ?
- UK vessels
- FR vessels before 2000
??
1983 2000 2005
Log-books
National fishing forms
Activity calendars
VMS
Reliability Availability Geographical Data
Exhaustive FR & UK (UE27) No
>= 10m & non exhaustive FR & UK Yes
< 10m & non exhaustive FR Yes
Exhaustive FR Yes
>= 15m FR & UK & foreign Yes
Community Fishing Fleet Register
19911983 2000 2005
Log-books
National fishing forms
Activity calendars
VMS
Reliability Availability Geographical Data
Exhaustive FR & UK (UE27) No
>= 10m & non exhaustive FR & UK Yes
< 10m & non exhaustive FR Yes
Exhaustive FR Yes
>= 15m FR & UK & foreign Yes
Community Fishing Fleet Register
1991
To identify vessels active in the Channel and to estimate indicators
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Selection of vessels active in the Channel
Proposition of methodology for French vessels without
log-books:• Criterion for decision rules based on Fleet Register :
vessel length, port of registration
• Rules checked with activity calendars for 2000 – 2008
• Rules applied for French vessels without log-books / national fishing forms before 2000
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Avant 2000 : ex 1999
French vessels in the Community Fishing Fleet
Register : 4341
Identification of statistical rectangles in the Channel
(7D + 7E)
Resident vessels : 1771 Non resident vessels : 2570
Use of log-books / national fishing forms
Use of log-books / national fishing forms
LB / NFF (1079 vessels – 60%)
No LB / NFF (692 vessels – 40%)
Activity in the Channel based on LB / NFF
Activity in the Channel based on decision rules
81vessels not active in the
Channel
688vessels
active in the Channel
4vessels not active in the
Channel
LB / NFF (1532 vessels – 60%)
No LB / NFF (1038 vessels – 40%)
Activity in the Channel based on LB / NFF
179vessels
active in the Channel
Activity in the Channel based on decision rules
1353vessels not active in the
Channel
10vessels
active in the Channel
1028vessels not active in the
Channel
An example : selection of French vessels active in the Channel in 1999
998vessels
active in the Channel
1875 vessels active in the Channel698 (37%) without log-books
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Perspectives :
Cefas to apply similar methodology to identify UK
Channel vessels (based on experts knowledge when no
log-books?)
To use VMS data to improve the identification of
Channel vessels (FR, UK, foreign) from 2005
Selection of vessels active in the Channel
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
VMS data processing
• Two different methodologies between Ifremer and Cefas
- Geographical allocation of effort
- Speed threshold
Ifremer : FR vessels are fishing when net speed < 4,5 knots
working on specifying threshold per gear
Cefas : UK vessels are fishing when net speed = [1;6] knots
French methodology maybe more accurate but less easy to run
A
B
Ax
Bx
Ifremer : hypothesis of straight-line tracks between two VMS spots.Allocation of effort per cell of the grid.
Cefas : Allocation of total effort between 2 spots to cell where is located the point B.
VMS2008
Source VMS : DPMA
Geographical/WGS4
Ifremer june 2010
hours fished
0 - 25
25,000001 - 50
50,000001 - 100
100,000001 - 250
250,000001 - 500
500,000001 - 1000
1000,000001 - 2500
2500,000001 - 5000
> 5000,000001
Charm 3
0 90 18045 Kilometers
French vessels -english ZEE
French vessels in the UK waters
(2008)
VMS data processing
Ifremer Cefas
VMS2008
Source VMS : DPMA
Geographical/WGS4
Ifremer june 2010
hours fished
0 - 25
25,000001 - 50
50,000001 - 100
100,000001 - 250
250,000001 - 500
500,000001 - 1000
1000,000001 - 2500
2500,000001 - 5000
> 5000,000001
Charm 3
0 90 18045 Kilometers
English vessels -french ZEE
Ifremer Cefas
UK vessels in the French waters
VMS data processing
Perspectives• Globally, results seem to be similar with both methodologies
at a coarse scale. More differences with a fine-scale resolution;
• Ifremer and Cefas are currently applying their own methodology on common data set comparison and choice of a common methodology.
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Indicators: proposition for UK & FR vessels active in the Channel
Characteristics of vessels• Length, power, age, geographical origin…
Reliability of data• Number and % of vessels without log-books : trends by length
categories
Main gears• Fishing effort: fishing time (hrs) by length categories (< or >= 15m)
geographical distribution, trends
• Landings: trends by length categories, seasonality by species
• Technical characteristics of vessels
Main species• Landings: geographical distribution and trends by length categories,
seasonality by gears
• Technical characteristics of vessels
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Resident vessels
Evolution of resident
vessels of the Channel.
French vessels
UK vessels
0
500
1000
1500
2000
2500
3000
1989 1991 1993 1995 1997 1999 2001 2003 2005 2007 2009
Years
Nu
mb
er o
f ve
ssel
s
< 10m [10;15[ >= 15m
0
500
1000
1500
2000
2500
3000
3500
4000
4500
1989 1991 1993 1995 1997 1999 2001 2003 2005 2007 2009
Years
Nu
mb
er o
f ve
ssel
s
< 10m [10;15[ >= 15m
1999 2009 Evol.
UK 3 700 2 200 - 40%
FR 2 600 1 500 - 42%
2009 - vessels <10m : 50%
2009 - vessels <10m : 85%
FR resident vessels: 5 – 10% not
active in the Channel
FR vessels active in the Channel : 10 –
16% are non resident
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
260
270
280
290
300
310
320
330
340
19992000
20012002
20032004
20052006
20072008
2009
Years
To
tal
po
wer
(10
00 *
Kw
)
0200400600800100012001400160018002000
Mea
n p
ow
er (
Kw
) /
Nu
mb
er o
f ve
ssel
s
Total power Number of vessels Average power
French vessels active in the Channel:Characteristics
0 100 200 300 400 500 600
5 ans et moins
De 6 à 10 ans
De 11 à 15 ans
De 16 à 20 ans
De 21 à 25 ans
De 26 à 30 ans
De 31 à 35 ans
De 36 à 40 ans
Plus de 40 ans
Cat
ego
ries
of
age
Number of vessels
<10 [10-15[ >=15
0 100 200 300 400 500
5 ans et moins
De 6 à 10 ans
De 11 à 15 ans
De 16 à 20 ans
De 21 à 25 ans
De 26 à 30 ans
De 31 à 35 ans
De 36 à 40 ans
Plus de 40 ans
Cat
ego
ries
of
age
Number of vessels<10 _10-15_ >=15
% of vessels per length categories 1999 - 2009Pyramid of ages : 1999 - 2009
Evolution of the capacity
Nb of vessels : -11%Total power : -7%
1999Average age: 18
2009Average age: 22
1999
27%
24%
49%
<10 [10-15[ >=15
2009
34%
23%
43%
<10 [10-15[ >=15
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
French vessels active in the Channel:geographic origin
IVc
VIIId
VIIa
VIIIa
VIIe
VIId
VIIh
VIIg VIIf
25
162
300
236
52
103
2
31
41
301
278
53
LS,6
AY,2LO,6
SM,60
SN,21
CC,17GV,33
AD,28
CM,13
LH,31
FC,38
DP,75
DK,21
MX,107
PL,109
CH,322
CN,192
BL,172
DZ,19
BR,118SB,194
CENTRE
BRETAGNE
PAYS-DE-LA-LOIRE
PICARDIE
NORD-PAS-DE-CALAIS
BRETAGNE NORD
ILE-DE-FRANCE
BRETAGNE SUD
POITOU-CHARENTES
AUVERGNE
BASSE-NORMANDIE
HAUTE-NORMANDIE
BOURGOGNE
LIMOUSIN
fishing vesselsoperating in
Charm III area
Source- Rectangle statistique : CIEM(Conseil International pourl'Exploration de la Mer)- Division : FAO (Food and AgricultureOrganization)- Région : Ifremer SIH (Systèmed'Information halieutique)- Quartier maritime : Ifremer SIH
Système de coordonnéesMercator/WGS4
Réalisation Ifremer 2010
Charm 3action 6.1
1
25
52
BA,1
AQUITAINE
MIDI-PYRENEES
POITOU-CHARENTES
number by port of registration
< 13
13 - 38
38 - 75
75 - 172
172 - 322
number by region
260
> 10m
< 10m
FAO Division
Charm III area
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Reliability of data
Vessels returning log-books
(and national fishing forms)
0
200
400
600
800
1000
1200
1400
1600
1800
2000
1999 2001 2003 2005 2007 2009
YearsN
um
ber
of
vess
els
With LB
Without LB
0%
20%
40%
60%
80%
100%
120%
1998 2000 2002 2004 2006 2008 2010
% o
f v
es
se
ls
<10 _10-15_ >=15
1999 : 63%2009 : 90% Improvement of the reliability of
data
% of vessels returning log-books by length
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
French vessels active in the Channel:main gears used
10 main gears
used
Individual
sheet on fishing
effort and
landings
Number of vessels and number of months of activity per gear (average on 2006-2008)
Source : Log-books
GearsNumber of
vesselsNumber of
months
Average number of months per
vessel
Demersal otter trawls 580 3 880 7Boat dredges 603 3 599 6Nets 488 3 096 6Pots 434 2 633 6Handlines 164 694 4Longlines 161 587 4Midwater trawls 148 531 4Beam trawls 46 279 6Glass-eel siever 60 129 2Seaweed gear 30 116 4Purse seines 17 79 5Diving gear 10 58 6Unknown 23 44 2Seashore gear 10 27 3Fyke nets 5 17 4Demersal seines 0 4 11
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Demersal otter trawls : fishing effort
Vessels <15m Vessels >=15m
0
50
100
150
200
250
300
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Years
Ves
sel
fish
ing
tim
e (1
000
* h
rs)
0
100
200
300
400
500
600
700
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Years
Ves
sel
fish
ing
tim
e (1
000
* h
rs)
IVc
VIIIa
VIIeVIId
VIIh
VIIf
VIIId
VIIa
VIIg
Sources- Rectangle statistique : CIEM- Division : FAO (Food and AgricultureOrganization)
Système de coordonnéescoord. geog./WGS4
Realisation Ifremer 2010FIS (Fisheries Information System)
OT Vessels < 15 m
Fishing Time vessel
0 - 198
199 - 699
700 - 4128
4129 - 9980
9981 - 16812
16813 - 54523
Charm 3 - WP 6
0 40 8020 Milles nautiques
Fishing effort (hr)French vessels
average 2006 - 2008IVc
VIIIa
VIIeVIId
VIIh
VIIf
VIIId
VIIa
VIIg
Sources- Rectangle statistique : CIEM- Division : FAO (Food and AgricultureOrganization)
Système de coordonnéescoord. geog./WGS4
Realisation Ifremer 2010FIS (Fisheries Information System)
Charm 3 - WP 6
0 40 8020 Milles nautiques
Fishing effort (hr)French vessels
average 2006 - 2008
OT Vessels >15 m
Fishing Time vessel
0 - 815
816 - 4878
4879 - 12576
12577 - 28955
28956 - 46675
46676 - 65376
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Demersal otter trawls: landings
Vessels <15m Vessels >=15m
-
500
1 000
1 500
2 000
2 500
3 000
3 500
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Years
Lan
din
gs
(to
nn
es)
Landings 7D Landings 7E
-
5 000
10 000
15 000
20 000
25 000
30 000
35 000
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Years
Lan
din
gs
(to
nn
es)
Landings 7D Landings 7E
0
1000
2000
3000
4000
5000
1 2 3 4 5 6 7 8 9 10 11 12
Lan
din
gs
(to
nn
es)
Seasonality
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Indicators
Perspectives:
• Assessment of dependence rate for vessels active in
the Channel
• Indicators on foreign (non UK-FR) vessels active in the
Channel : characteristics, fishing effort (VMS)
ACTION 6.1 EXPLOITATION DATA – 26-28/10/10, RENNES
Thank you for your attention…..
… any questions ?
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