Mean length and weight at-age of anchovy and sardine estimated during the PELGAS survey in the Bay of Biscay in springtime
The Pélagiques Gascogne (PELGAS, Doray et al., 2000) integrated survey aims at assessing the biomass of small pelagic fish and monitoring and studying the dynamics and diversity of the Bay of Biscay pelagic ecosystem in springtime. PELGAS has been conducted within the EU Common Fisheries Policy Data Collection Framework and Ifremer’s Fisheries Information System. Details on survey protocols and data processing methodologies can be found in Doray et al., (2018a, 2021).
This dataset comprises the mean length-at-age (cm) and weight-at-age (g) estimated annualy since 2000 for anchovy and sardine, based on PELGAS survey data. Both indices were weighted by fish abundance per length class, and are provided with an estimation error (coefficient of variation in %). Indices were produced following a standard methodology implemented in the EchoR R package (Doray et al. 2013).
Those estimates have been validated by the ICES WGACEGG group and provided to the ICES WGHANSA group for stock assessment purposes. Data have been used in Doray et al., 2018b.
Disciplines
Fisheries and aquaculture
Keywords
weight, length, Bay of Biscay, fisheries acoustics, midwater trawl, anchovy, sardine
Location
48.125706N, 42.992527S, -0.791016E, -5.668945W
Devices
Sensor metadata are described in Doray et al., (2018a, 2021).
Data
File
Size
Format
Processing
Access
Anchovy and sardine mean weight and length at age, PELGAS survey
Doray Mathieu, Duhamel Erwan, Boiron-Leroy Anne, Marchand Laetitia, Bled--defruit Geoffrey, Petitgas Pierre (2022). Mean length and weight at-age of anchovy and sardine estimated during the PELGAS survey in the Bay of Biscay in springtime. SEANOE. https://doi.org/10.17882/88357
In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :
Doray Mathieu, Petitgas Pierre, Romagnan Jean-Baptiste, Huret Martin, Duhamel Erwan, Dupuy Christine, Spitz Jerome, Authier Matthieu, Sanchez Florence, Berger Laurent, Doremus Ghislain, Bourriau Paul, Grellier Patrick, Masse Jacques (2018). The PELGAS survey: ship-based integrated monitoring of the Bay of Biscay pelagic ecosystem. Progress In Oceanography. 166. 15-29. https://doi.org/10.1016/j.pocean.2017.09.015, https://archimer.ifremer.fr/doc/00407/51801/
Grandremy Nina, Romagnan Jean-Baptiste, Dupuy Christine, Doray Mathieu, Huret Martin, Petitgas Pierre (2023). Hydrology and small pelagic fish drive the spatio–temporal dynamics of springtime zooplankton assemblages over the Bay of Biscay continental shelf. Progress in Oceanography, 210. https://doi.org/10.1016/j.pocean.2022.102949
