Bluefin tuna larval indices in the western Mediterranean, ecological and analytycal sources of uncertainity
Year: 2020
Type: article
Abstract: The main objective of this study is to provide the knowledge to design adequate sensitivity \nanalyses on the assessment models used for the Eastern stock of Bluefin tuna. We analyze how \ndifferent configuration for the same environmental variable (temperature in the mixed layer \ndepth) and different modeling approaches (nonlinear Delta-log,delta-gamma, tweedy and \nbayesian) affects to the variability of the larval indices of the Eastern bluefin tuna from data \ncollected in the Balearic Sea (Western Mediterranean). We also investigate the effects on the \nindex caused from having differences in the total sampled area among years. We used these \nresults to interpolate larval index values in years with not standard larval surveys but with some \nichthyoplankton surveys available, and to propose a “revised version” of the index providing \nparameters of uncertainty.
Authors: Álvarez-Berastegui, Diego, Tugores, María Pilar, Ottmann, Daniel, Martín-Quetglas, Melissa, Reglero, Patricia
Language: English
Subfield: Aquatic Science
Domain: Life Sciences
SDG: Life below water
Open Access status: green
OpenAlex ID: W7017705608