Benthic ecosystem fisheries Impact Study

Informations projet

BENTHIS

N° de convention de subvention: 312088

Projet clôturé

Date de début 1 Octobre 2012

Date de fin 30 Septembre 2017

Financé au titre de

• Specific Programme "Cooperation": Food, Agriculture and Biotechnology

Coût total € 7 784 925,51

Contribution de l’UE € 5 994 250,00

Coordonné par

STICHTING WAGENINGEN RESEARCH
Netherlands

Résultats exploitables

Exploitable results – Innovative fishing gears - Improved scallop dredges

Result description

The scallop dredges are improved.

Result type

* Report

Link to result

References

BENTHIS reports: Deliverable 7.8

Exploitable results – Ecological impact of Pulse Trawls (penetration depth, sediment remobilisation)

Result description

Pulse trawl (PT): penetration depth of pulse trawl is less than the traditional tickler chain beam trawl, while sediment remobilisation is equal.

Result type

* Scientific Publication

Link to result

References

Depestele, J., Ivanović, A., Degrendele, K., et al. (2015) Measuring and assessing the physical impact of beam trawling. ICES Journal of Marine Science, doi 10.1093/icesjms/fsv056

Exploitable results – Development and test of a lighter mussel dredge

Result description

A light dredge for mussel farming was tested using two different experimental setups. A standard Dutch dredge was tested against a light dredge using both a twin haul experiment and a single drege experiment. The weight of the sediment retained was 49% less using the light dredge, compared with the Dutch dredge. There was no significant difference of the catch per unit effort (CPUE) of the two gears. However, in the single dredge experiment, the light dredge had a significant increase in the CPUE of 200%. The replacement of a light dredge reduced suspension of sediments and reduced fuel consumption.

Result type

* Scientific Publication

Link to result

http://dx.doi.org/10.1002/aqc.2455

References

Frandsen, R. P., Eigaard, O. R., Poulsen, L. K., Tørring, D., Stage, B., Lisbjerg, D. and P. Dolmer (2015) Reducing the impact of blue mussel (Mytilus edulis) dredging on the ecosystem in shallow water soft bottom areas. Aquatic Conservation: Marine and Freshwater Ecosystems, 25(2), 162-173.

Exploitable results – Innovative fishing gears - bottom trawls

Result description

Use of creels to replace bottom trawls show low catch rates.

Result type

* Report

Link to result

References

BENTHIS reports: Deliverable 7.8

Exploitable results – Innovative fishing gears - Otter boards with reduced bottom contacts

Result description

Innovative otter boards: field test show reduction in bottom contact and (sometimes) lower catch efficiency.

Result type

* Report

Link to result

References

BENTHIS reports: Deliverable 7.8

Exploitable results – Model to predict effort displacement under spatial restrictions

Result description

This tool can model changed fishing patterns, if/when subject to marine restrictions such as marine protected areas, windmill farms, oil pipes, marine traffic etc. The model simulates not just the spatial effort changes, but also the economic performance of the fishermen as well as the spatial changes in fish biomass abundance.

Result type

* software/modelling tools

Link to result

http://dx.doi.org/10.1093/icesjms/fsu215

References

Bastardie, F., Nielsen, J.R., Eigaard, O.R., Fock, H.O., Jonsson, P. and V. Bartolino (2015) Competition for marine space: modelling the Baltic Sea fisheries and effort displacement under spatial restrictions. ICES Journal of Marine Science, 72, 824-840.

Exploitable results – Testing otter board hydrodynamic performances in wind tunnel facilities

Result description

Otter board hydrodynamic performances are tested in wind tunnel facilities and provide a cheap way of optimizing otter board performance.

Result type

* Scientific Publication

Link to result

http://dx.doi.org/10.1016/j.oceaneng.2015.04.064

References

Mellibovsky, F., Prat, J., Notti, E., and A. Sala (2015) Testing otter board hydrodynamic performances in wind tunnel facilities. Ocean Engineering, 104, 52-62.

Exploitable results – Seabed pressure estimates from demersal trawls, seines, and dredges

Result description

Based on gear design and dimensions, the seabed pressure from demersal trawls, seines and dredges are estimated.

Result type

* Scientific Publication

Link to result

http://dx.doi.org/10.1093/icesjms/fsv099

References

Eigaard, O. R., Bastardie, F., Breen, M., et al. (2015) Estimating seabed pressure from demersal trawls, seines, and dredges based on gear design and dimensions. ICES Journal of Marine Science, doi:10.1093/icesjms/fsv099

Exploitable results – Ecological impact of Pulse Trawls (bycatch and seabed impact)

Result description

Pulse trawl (PT) comparison with the traditional tickler chain beam trawl (TCBT). PT bycatch and fuel use is less. PT has higher net revenues /gross profit than the conventional TCBT.

Result type

* Scientific Publication

Link to result

http://dx.doi.org/10.1016/j.fishres.2013.11.007

References

van Marlen, B., Wiegerinck, J. A. M., van Os-Koomen, E. and E. van Barneveld (2014) Catch comparison of flatfish pulse trawls and a tickler chain beam trawl. Fisheries Research, 151, 57-69.

Exploitable results – Map of trawling intensities of pan European bottom trawl fleets

Result description

Map of trawling intensities of pan European bottom trawl fleets.

Result type

* Report

Link to result

http://www.benthis.eu/en/benthis.htm

References

Exploitable results – Framework to assess trawling impact on the benthic ecosystem

Result description

Framework to assess trawling impact on the benthic ecosystem.

Result type

* RTD protocol/technical manual

Link to result

http://dx.doi.org/10.1093/icesjms/fsv207

References

Rijnsdorp, A.D., Bastardie, F. Bolam, S.G., et al. (2015) Towards a framework for the quantitative assessment of trawling impacts on the sea bed and benthic ecosystem. ICES Journal of Marine Science, doi:10.1093/icesjms/fsv207