Improved discrimination of non-target species, maximising fishery efficiency
More specifically, it studies the behaviour of species to:
- Obtain increased acoustic discrimination of insonified species.
- Understand the resource better (dynamics, biomass, etc.).
Acoustic technology enables the discrimination of non-target species, avoiding time loss, fuel consumption and facilitating more sustainable fishing.
- For the Fisheries Sector:
- Contributes to the discrimination of non-target species, avoiding time loss, fuel consumption and facilitating more sustainable fishing.
- Information on behaviour (dynamics of target species) for increased fisheries efficiency and reduced fuel consumption.
- For the Scientific Community:
- Better understanding of the species for its conservation.
- Study of the potential adverse effects for fishing (ecological trap,…) and design mitigation measures for these adverse effects.
- Fisheries Sector.
- Scientific Community.
- Public administrations and official bodies that seek to avoid the fishing of non-target species in the purse-seine tropical tuna fleet.
- NGOs and conservation foundations (ISSF).
AZTI has over 10 years’ experience in the research of species associated with fish aggregating devices using acoustic techniques and marking.
- Over 10 years’ experience in the research of species associated with fish aggregating devices using acoustic techniques and tagging.
- 10 years of acoustic campaigns, researching the behaviour, ecology and abundance of anchovy in the Bay of Biscay
- Multi-disciplinary work team specialised in fisheries technology, eco-ethology of species of interest and underwater acoustics.
- Members of expert committees in acoustics (ICES acoustics working group) and members of the ISSF by-catch scientific committee.
- Specific technologies available:
- Simrad 38, 120 and 200 kHz. scientific sounders
- Acoustic tags and listening stations.
- Environmental satellite maps (altimetry, temperature, chlorophyll…).
- In-house technology based on image analysis to analyse behaviour, spatial distribution and abundance of pelagic species using sonar data.
- Development of shields to differentiate fish, crustaceans and other types of plankton based on acoustic data of various frequencies.
- Pioneers in the interpretation and processing of nocturnal acoustic data.
Proven track record
- Juvena Campaigns: study of the ecology and dynamics of young anchovy in the Bay of Biscay (Boyra et al. 2013)
- Publication on relationships between albacore and its prey in the Bay of Biscay (Lezama-Ochoa et al. 2010)
- Doctoral thesis on the acoustic study of macro-zooplankton in the Bay of Biscay: spatial distribution, environmental interaction and impact. (Lezama-Ochoa, 2012).
- FADIO Project: study of instrumented FADs (floating objects), as observatories of pelagic resources.
- FEP SELECTUN Project: Use of empirical knowledge of fishers and their echo-sounder buoys to understand tuna behaviour.
- MADE Project: PhD thesis on obtaining tuna abundance indexes and behaviour as assessed by fisher’s echo-sounder buoys
- Two scientific publications (Lopez et al. 2014 In press) on the use of fisher’s echo-sounder buoys to improve tuna biomass estimates.