|
July 2002 |
GFCM:SAC5/2002/4 |
to main page

|
GENERAL FISHERIES COMMISSION FOR THE MEDITERRANEAN |
|
SCIENTIFIC ADVISORY COMMITTEE |
|
FIFTH SESSION |
|
Rome, Italy, 1-4 July 2002 |
|
CONCLUSIONS AND RECOMMENDATIONS |
INTRODUCTION
1.
The four
Sub-Committees of GFCM/SAC met simultaneously at the CSCI-Institute of Marine
Sciences in
2.
Globally the
number of experts who participated at the various Working Groups and the
Sub-Committees has slightly increased compared with last year. However, the
lack of scientists and related scarcity of studies to cover activities in the
3.
The programme of
work decided upon by the Twenty-sixth Session of the Commission and related to
the work of these Sub-Committees has been satisfactorily implemented.� The work of the Sub-Committee on Statistics
and Information and the Sub-Committee on Marine Environment and Ecosystem was
not supported by any Working Group during the intersessional period and this
might have affected expected achievements.
SUB-COMMITTEE ON
STOCK ASSESSMENT
4.
The Sub-Committee
on Stock Assessment (SCSA) endorsed 19 of the assessments presented by its
Working Groups on demersal species and on small pelagic species (March 2002,
Large pelagic species
5.
In relation to Bluefin Tuna fisheries, the SCSA
recommended that:
�
new biological
data and length-weight relationship presented should be considered as
preliminary and that the current biological parameters used in assessment by
ICCAT should be maintained;
�
statistics on
original size data should be provided and raised or otherwise provided data
should be accompanied by an explanation of the process used;
�
conversion factors
to trade data should be applied in all cases for consistency, except for data
resulting from farmed belly meat products;
�
re-export data,
available since 1999, should be included in the estimation of unreported
catches, unless the importation was reported to ICCAT by the first country;
�
in view of the
current difficulty to implement a full-scale assessment of the East
Atlantic-Mediterranean stock (scheduled for July 2002), it was suggested that
simpler methods and approaches (e.g. simulation) be conducted in order to estimate
at least an abundance trend for the stock.
6.
In relation to the
fisheries of Swordfish, the SCSA
expressed the view and recommended that:
�
comparisons of
results concerning growth and maturity between the
7.
With regard to other large pelagic species: SCSA
stressed the need to obtain more information on Albacore. It recommended that
source of funding should be explored to support a consistent collection of
shark statistics as well.
8.
The issue of Bluefin tuna fattening (BFF) was high
on the Agendas of the GFCM/ICCAT Working Group and of SCSA. There was agreement
that BFF operations significantly affect data collection and stock assessment
procedure for the species. Possible solution to limit BFF adverse impact (on
statistics; with regard to biology; on management; on environment; as well as
social and economic aspects) was identified.
9.
As a result, the
SCSA recommended that :
�
An ad hoc Working
Group of SAC be established with the mandate of elaborating a draft code of
conduct on sustainable tuna fattening practices in the
�
Common definitions
be adopted for terminology relating to this activity, if possible with the help
of the Coordinating Working Party on Fishery Statistics (CWP). To this end, it
is recommended that those responsible for the FAO, GFCM and ICCAT Glossaries
collaborate in order to agree on common definitions;
�
data on Bluefin
fattening� should be reported to ICCAT;
�
GFCM was invited
to include, the following migratory sharks species, Prionace glauca, Lamna nasus
and Isurus oxyrinchu, on its list of
priority species.
�
an evaluation of
dolphin fish (Coryphaena hippurus) in
the
10.
It was further
recommended that :
�
ICCAT Secretariat
and FAO continue to collaborate closely for improving their catch data bases,
while attempting to minimize duplication of work by national scientists;
�
detailed catch and
operational information about tuna and tuna-like species be submitted by all
countries, in order to facilitate the standardization of data with regard to
the various gears included in the drift nets category.
Demersal Species
11.
The Sub-Committee
endorsed in particular the following findings and recommendations:
�
For Merluccius merluccius in Geographical
sub-area 9:� to reduce by at least 15%
the fishing effort on a multi-annual basis; this should be complemented with
strengthened efforts in protecting nursery areas where juveniles are
concentrated during the whole year.
�
For Mullus barbatus in Geographical sub-area
9: to reduce fishing effort through the enforcement of a seasonal fishing ban
within the period late summer-early autumn.
�
For Aristeomorpha foliacea in Geographical
sub-area 11: fishing effort should not be increased.
�
For Merluccius merluccius in Geographical
sub-area 7: fishing effort by longline and gillnets should be reduced through
establishing temporary closures during the period of maximum spawning, or by
reducing time at sea, and/or fishing boats, and/or engine power. Concurrently,
length at first capture should be increased.
�
For Aristeus antennatus in Geographical
sub-areas 1, 5, and 6: the optimum effort should be half of the current one for
females and three quarters on males. Combined males and females assessments
were also recommended.
Small Pelagics
12.
The Sub-Committee
endorsed most of the recommendations of the Working Group on small-pelagic as
follows.
�
Engraulis encrasicolus in Geographical sub-areas 1, 6, 7 and 17 : the current
level of fishing effort should be maintained;
�
Engraulis encrasicolus in Geographical sub-area 22 : the Working Group should
extend the study area, include the whole spawning ground of the stock and
standardize the methodology;
�
Sardina pilchardus in Geographical sub-areas 6 and 17: current level of fishing effort should
not be increased while discard at sea should be closely monitored;
�
Sardina pilchardus in Geographical sub-area 3 : further analysis should be carried out;
�
Sardina pilchardus in Geographical sub-areas 20 and 22: a long-term programme on biomass
estimation should be organized and conducted.
13.
The SCSA also
reviewed assessments carried out by the SAMED project based on MEDITS which
included 3 species in 15 Geographic sub-areas and endorsed recommendations on:
temporal closure and effort limitation for Merluccius
merluccius; on technical improvements for reducing the impact of trawl
doors and avoiding catches of small individuals with regard to Nephrops norvegicus; and on the
implemention of temporary closures and shallow waters protection measures for Mullus barbatus.
14.
SCSA also agreed
upon the following :
�
the Adriatic Nephrops norvegicus as well as Coryphaena hippurus of Spain, Malta,
Italy and Tunisia should be added to the GFCM list of shared stocks; while Boops boops of the Adriatic should be
withdrawn from the list;
�
analysis of the
most suitable biological reference points for the main demersal fisheries
should be encouraged.
SUB-COMMITTEE ON
STATISTICS AND INFORMATION
15.
The Sub-Committee
on Statistics and Information (SCSI) noted progresses achieved with regard to
the harmonization of data collection. SCSI stressed the need to ensure
sustainability of activities initiated and underlined the role of the other
Sub-Committees and of the Secretariat in this respect. SCSI supported the
proposal by SCSA for establishing a Working Group on Tuna fattening involving
representatives of each SAC Sub-Committees.
16.
With regard to
Operational Units, SCSI stressed the need to build a system that could be
flexible, according to user�s requirement (at country, regional and
international levels). The Sub-Committee acknowledged the work carried out so
far by the Sub-Committee on Economics and Social Sciences (SCESS). It
recommended that a joint Working Group on Operational Units be established
between SCSI and SCESS.
17.
With regard to
consolidating the GFCM information system, SCSI recommended that :
�
an inventory of
all databases in the various systems (e.g: Copemed; AdriaMed, ItaFish, etc.)
should be carried out and those that can be maintained by the GFCM Secretariat
(e.g: on research and development) should be progressively transferred to it;
in the meantime the regional projects will continue to look after their own
systems and provide assistance to member countries in this field;
�
the validity of
each available information systems should be assessed and SCSI� should interact more closely with the other
Sub-Committees in this respect;
�
new applications
envisaged should follow common standards agreed by SCSI and should foresee
countries requirements as well as those of FIGIS, EC and others, when
applicable;
�
a list of stocks
and fisheries monitored under the GFCM mandate should be established with a
view to facilitating a possible agreement between FIGIS and GFCM.
18.
It was also
suggested that the MEDIFSIS project in the pipeline could be reassessed in view
of progress achieved in some countries supported by Copemed and AdriaMed and
that, to meet the EC prerequisite of additional sponsor to consider project
funding, FAO could possibly directly contribute through formulating a regional
TCP, if so requested by at least three countries.
SUB-COMMITTEE ON
ECONOMICS AND SOCIAL SCIENCES
19.
The Sub-Committee
on Economic and Social Sciences (SCESS) expressed its appreciation of progress
achieved by the Working Group on Economic and Social Indicators (11-13 March
2002,
20.
SCESS recommended
that:
�
to complement
current studies (covering respectively GFCM geographical sub-areas: 1; 2; 3; 7;
9; 10; 14; 17 and 18), case studies on economic and social indicators should be
extended to all GFCM geographical areas following the methodology agreed upon
by the Sub-Committee and taking into consideration its recommendations on a
segmentation of the Mediterranean fleets;
�
GFCM Members be
invited to collect (as an annual routine), the basic data necessary for
building-up the set of Mediterranean economic and social indicators identified
with a view to building the related data base;
�
a joint working group
with SCIS should be created with the mandate of establishing the GFCM data base
on Operational Units;
�
the fleet
segmentation being identified should be endorsed by SAC;
�
pilot studies
should be undertaken to further define the concept of LOUs;
�
the following
social indicators: weighted average age; number of years of active fishing;
capital share; education; household structure, social background and
experience, should be added to the existing list of basic indicators;
�
a Mediterranean
manual on sampling techniques (covering the Neyman and
�
work on the
glossary should be pursued by the network of social scientists, by e-mail as a
first step, and a� workshop should be
organized to finalize outputs, as a second step;
�
social scientists
should collect and forward to the Coordinator the required information on
regional and national projects and activities related to fishery social
sciences in the Mediterranean as well as the bibliographical references taking
into account the agreed standard format;
�
studies on legal
aspects of fisheries management being undertaken respectively by Copemed and
AdriaMed regional projects should be extended to cover the other GFCM
geographical areas;
�
a third meeting of
the Working Group on indicators should be organized in 2003.
SUB-COMMITTEE ON
MARINE ENVIRONMENT AND ECOSYSTEMS
21.
The following are
the main conclusions and recommendation of the Sub-Committee :
�
a joint meeting of
the SAC Sub-Committees should be convened to finalize the Glossary;
�
a Working Group on
incidental catches of protected species should be established as a first step
with the view to further investigating and updating data and information,
(including developing activities such as setting-up a list of concerned experts
and institutions; establishing an inventory of related national plans;
identifying scientific studies, etc.); and as a second step to include the
collection of data on ports and on board for monitoring watches and tags
recoveries;
22.
It was further
recommended:
�
to endorse the
protocol of a study developed by ICRAM for monitoring migratory routes of
basking shark by a satellite tag programme;
�
to promote a
quantitative study to assess discards, at national level;
�
to rely on MEDITS
distribution charts for recruitment, nursery or spawning areas for priority
species, while taking care of information on characteristics of bottom
substrate, location and extension of Posidonia
oceanica, physical characteristics of water masses near the bottom and,
determining parameters that affect fish habitats, such as alien and invasive
species, contaminants, etc.
�
to strengthen the
gathering of information on new projects of interest to the Sub-Committee;
�
to follow-up on
the recommendation taken at the Fourth Session of SAC to organize a meeting on
the ecosystem based approach in the
�
to assess the
possibility of establishing two Working Groups, respectively on anthropogenic
effects and fishing technology and on ecology and environment.
SUGGESTED ACTION
BY THE COMMITTEE
23.
The Committee is
invited to review the conclusions and recommendations of its Sub-Committees and
ad hoc Working Groups. In doing so, it is suggested to pay special attention to
issues such as the state of some stocks, Bluefin tuna fattening, fleet
segmentation, Operational Units and the consolidation of databases,
socio-economic indicators, MedFisis project, the environment parameters, and to
provide advice to GFCM for consideration of these recommendations and
conclusions.
24.
The Committee is
also invited to review the activities proposed by the Sub-Committees and decide
on the opportunities and priorities concerning their respective programmes of
work.
25.
The Committee may also
wish to identify those studies produced during the intersessional period which
could possibly be published in the GFCM Series �Studies and Reviews�.
26.
The Committee is
called upon to provide its views on possible ways to strengthen the format of
the conclusions and recommendations expressed by the Sub-Committees and ad hoc
Working Groups.
APPENDIX 1
MANAGEMENT UNITS
|
FAO SUBAREA |
FAO STATISTICS DIVISIONS |
GFCM MANAGEMENT UNITS (24th
Meeting) |
MANAGEMENT UNITS PROPOSAL ( |
|
WESTERN |
1.1. BALEARIC |
1.1.a. waters surrounding |
5. |
|
1.1.b. waters off Spanish continental
coast |
6. |
||
|
1.1.c. waters off |
4. |
||
|
1.1.d. Alboran sea |
1. Northern 2. 3. Southern |
||
|
1.2. |
1.2.e. |
7. |
|
|
1.2.f. waters off |
7. |
||
|
1.3. |
1.3.g. waters surrounding |
8. |
|
|
1.3.h. waters surrounding |
11. |
||
|
1.3.i. waters off north |
10. South and |
||
|
1.3.j. waters off Italian continental
shelf |
9. Ligurian and 10. South Tirrenian Sean |
||
|
1.3.k. waters northern |
12. |
||
|
CENTRAL |
2.1. |
2.1.a. northern and central |
17. |
|
2.1.b. south |
18. |
||
|
2.2. IONIAN |
2.2.c. waters off southeast |
19. |
|
|
2.2.d. waters off western Greek |
20. |
||
|
2.2.e. waters off |
15. 16. South of |
||
|
2.2.f. |
13. 14. |
||
|
2.2.g. waters off |
21. |
||
|
EASTERN |
3.1. |
3.1.a. |
22. |
|
3.1.b. waters surrounding |
23. |
||
|
3.2. |
3.2.c. waters surrounding |
25. |
|
|
3.2.d. waters off southern |
24. South of Turtkey |
||
|
3.2.e. southeast |
27. |
||
|
3.2.f. waters off |
26. |
||
|
|
4.1. MARMARA |
4.1. |
28. |
|
4.2. |
4.2. |
29. |
|
|
4.3. |
4.3. |
30. |