The impact of variations in oceanographic conditions on distribution, aggregation structure and fishery pattern of redfish (Sebastes mentella Travin) in the pelagial of the Irminger Sea and adjacent waters ...

• Main Authors: Melnikov, S. P., Karsakov, A. L., Popov, V. I., L.Tretyak, V., S.Tretyakov, I.
• Format: Conference Object
• Language: unknown
• Published: ASC 2009 - Theme session E 2024
• Subjects: Fisheries and aquaculture; Pressures, impacts, conservation, and management; Irminger Sea; Sebastes mentella
• Online Access: https://dx.doi.org/10.17895/ices.pub.25070954; https://ices-library.figshare.com/articles/conference_contribution/The_impact_of_variations_in_oceanographic_conditions_on_distribution_aggregation_structure_and_fishery_pattern_of_redfish_Sebastes_mentella_Travin_in_the_pelagial_of_the_Irminger_Sea_and_adjacent_waters/25070954

No abstracts are to be cited without prior reference to the author.Analysis of data from acoustic trawl surveys of Sebastes mentella in the Irminger Sea pelagial suggests that extension of redfish distribution to the southwest observed since the mid-1990s was caused by migration of some aggregations from the traditional feeding areas due to an increased advection of Atlantic waters by the Irminger current and higher temperatures of the surface layer (TSL). However, the use solely of the data from surveys conducted every other year limits the possibility to study the impact of variations in oceanographic conditions on distribution, aggregation structure and fishery pattern of redfish in the long term, although such information is essential for the development of sustainable harvesting strategies for fish resources. Data on monthly mean TSL fields at the regular grid nodes for 1982-2008 were used as additional oceanographic indices. To identify and forecast TSL data, the aliquant frequency method was used. ...