Spatially explicit estimates of stock size, structure and biomass of North Atlantic albacore tuna (Thunnus alalunga)

The development of the ecosystem approach and models for the management of ocean marine resources requires easy access to standard validated data sets of historical catch data for the main exploited species. They are used to measure the impact of biomass removal by fisheries and to evaluate the mode...

Full description

Bibliographic Details
Published in:Earth System Science Data
Main Authors: Lehodey, P., Senina, I., Dragon, A.-C., Arrizabalaga, H.
Format: Other/Unknown Material
Language:English
Published: 2018
Subjects:
Online Access:https://doi.org/10.5194/essd-6-317-2014
https://essd.copernicus.org/articles/6/317/2014/
Description
Summary:The development of the ecosystem approach and models for the management of ocean marine resources requires easy access to standard validated data sets of historical catch data for the main exploited species. They are used to measure the impact of biomass removal by fisheries and to evaluate the models outputs, while the use of a standard data set facilitates models inter-comparison. Unlike standard stock assessment models, new state-of-the-art ecosystem models require geo-referenced fishing data with the highest possible spatial resolution. This study presents an application to the North Atlantic albacore tuna stock with a careful definition and validation of a spatially explicit fishing data set prepared from publicly available sources (ICCAT) for its use in a spatial ecosystem and population dynamics model (SEAPODYM) to provide the first spatially explicit estimate of albacore density in the North Atlantic by life stage. Density distributions together with the fishing data used for the estimates are provided at http://doi.pangaea.de/ (see section Source Data References) ( doi:10.1594/PANGAEA.828115 doi:10.1594/PANGAEA.828226 doi:10.1594/PANGAEA.828227 doi:10.1594/PANGAEA.828228 doi:10.1594/PANGAEA.828229 doi:10.1594/PANGAEA.828230 doi:10.1594/PANGAEA.828231 doi:10.1594/PANGAEA.828232 doi:10.1594/PANGAEA.828232 doi:10.1594/PANGAEA.828233 doi:10.1594/PANGAEA.828234 doi:10.1594/PANGAEA.828235 doi:10.1594/PANGAEA.828236 doi:10.1594/PANGAEA.828237 doi:10.1594/PANGAEA.828238 doi:10.1594/PANGAEA.828168 doi:10.1594/PANGAEA.828170 doi:10.1594/PANGAEA.828171 ).