Case studies

Study area

 

BOTTOM TRAWL


1.1. Icelandic demersal fishery
Evolving an existing ATLANTIS ecosystem model focusing on discard reduction, implementation costs and compliance

1.2 Algarve deep-water crustacean fishery
Deep Vision; large mesh panels and sorting grids, traps (with use of novel stimuli such as artificial light) as alternative gear for shrimp and Nephrops, Ecopath/Ecosim model to evaluate discards reductions/ban

1.3 North and South Iberian hake stocks
Bioeconomic age structured model for mixed fisheries with dynamic optimization and simulation models for analysis of discard reduction

1.4 Catalan sea bottom trawl fishery
Deep Vision; post-release survival of invertebrates; cascading effects on seabirds; participatory approach

1.5 Bottom trawl crustacean fisheries in Sicily (Parapenaeus)
Area closures (GIS models and SMART bioeconomic model) combined with sorting grids and separator panels to address: unmarketable juveniles of target species, catch composition, improving fisheries selectivity.

1.6 Bottom trawl fisheries in Ligurian and N. Tyrrhenian sea
Evaluation of the effects of closing the fisheries in areas or for periods with high concentration of hake juveniles; simulation study through GIS modelling and GADGET bio-economic analysis. Experimental surveys will be performed using Deep Vision system in order to have real time information on species and size composition to minimize the pre-catch losses/mortality.

1.7 Aegean sea bottom trawl
Deep Vision, Application of EwE to assess ecosystem responses of discard reduction; bioeconomic age structured model for mixed fisheries with dynamic optimization and simulation models for analysis of discard reduction.

1.8 Bottom trawl fisheries in Ligurian and N. Tyrrhenian sea
The impact of using artificial lights (already in place by fishers) on increased catchability of Parapenaeus longiostris, in relation to unwanted catches of hake juveniles will be assessed.

 

SMALL PELAGICS


2.1 Adriatic pelagic trawl
GFCM and EU management plans – multi-actor approach with end users

2.2 Algarve purse seine
Procedural and technological changes to purse seining with mixed catches of low value by-catch, and undersized target species leading to slipping; developing a commercially viable, low-impact alternative to current fishing practices

2.3 North Aegean sea purse seine (Kavala)
Bottom up solutions by multi-actor participatory approach to discarding low value bycatch.

 

SMALL SCALE


3.1 Algarve set nets and traps
Technological solution to limit the catch of unwanted organisms (“selvedge” strip) and low value or damaged/scavenged specimens

3.2 Balearic islands set net fisheries (red mullets; spiny lobster)
Technological solution to limit the catch of unwanted organisms (“selvedge” strip) and control species composition (unwanted species); reducing detrimental effect on benthos

3.3 Balearic islands boat seine fisheries
Reduce unwanted species in transparent goby fisheries; detrimental effect on benthos; examine post-release survival of undersized Pagellus, and released Aphia (quota excess).

3.4 Small scale fishing in Catalan coast
Expanding the experience of successful management plans with fishers; modifications to set fishing gear to reduce post-harvest losses

3.5 Trammel net fisheries in Ligurian and N. Tyrrhenian sea
Technological solution to limit the catch of unwanted organisms (“selvedge” net) in Penaeus kerathurus fisheries: installing a selvedge on trammel nets will decrease the impact on unwanted invertebrates as well as increase the profitability of the fisheries because of reduced sorting time and lower damage to the nets.

3.6 Longline swordfish fisheries in Aegean sea
Experimental fishing using circle hooks and time-depth recorders to identify fishing practices that favour the reduction of marine turtle by-catches, as well as, those of undersized individuals of the target species.

3.7. Transition to pots for gadoid fish Norway
Transitioning from bottom trawl to pots in gadoid fisheries: Developing pots as a commercially viable, low impact alternative to current fishing practices