Mesoscale productivity fronts and local fishing opportunities in the European Seas

Type Article
Acceptance Date 2021 IN PRESS
Language English
Author(s) Druon Jean‐noëlORCID1, Gascuel Didier2, Gibin Maurizio1, 3, Zanzi Antonella1, Fromentin Jean-Marc4, Colloca Francesco5, Hélaouët Pierre6, Coll Marta7, Mannini Alessandro1, Bluemel Joanna K8, Piroddi Chiara1, Bastardie FrancoisORCID9, Macias‐moy Diego1, 10, Vasilakopoulos ParaskevasORCID1, Winker Henning1, Serpetti Natalia11, Guillen JordiORCID1, Palialexis Andreas1, Gras MichaëlORCID1, Hekim Zeynep1, Dubroca Laurent12, Pinto Cecilia1, Steenbeek Jeroen13, Martinsohn JannORCID1
Affiliation(s) 1 : European Commission Joint Research Centre (JRC) Ispra, Italy
2 : ESE, Ecology and Ecosystem Health Institut AgroINRAE Rennes ,France
3 : Consumer Data Research Centre Department of Geography UCL London ,UK
4 : MARBEC IFREMER, IRD CNRS University of Montpellier Sète, France
5 : Department of Integrative Marine Ecology Stazione Zoologica Anton Dohrn Naples, Italy
6 : Marine Biological Association Plymouth, UK
7 : Institute of Marine Science (ICM) Spanish National Research Council (CSIC) Barcelona ,Spain
8 : Centre for Environment Fisheries and Aquaculture Science (CEFAS) Weymouth, UK
9 : DTU‐Aqua National Institute of Aquatic Resources Technical University of Denmark Lyngby, Denmark
10 : Institute of Marine Sciences of Andalusia (ICMAN) Spanish National Research Council (CSIC) Cadiz ,Spain
11 : Scottish Association for Marine Science ‐ SAMS Oban,UK
12 : Laboratoire Ressources Halieutiques de Port en Bessin Port en Bessin, France
13 : Ecopath International Initiative (EII) Research Association Barcelona ,Spain
Source Fish and Fisheries (1467-2960) (Wiley) In Press
DOI 10.1111/faf.12585
Keyword(s) catches per unit of effort, chlorophyll-a gradient, landings per unit of effort, local-scale, Plankton-to-fish estimate, spatial fisheries management
Abstract

This study evaluates the relationship between both commercial and scientific spatial fisheries data and a new satellite-based estimate of potential fish production (Ocean Productivity available to Fish, OPFish) in the European Seas. To construct OPFish, we used productivity frontal features derived from chlorophyll-a horizontal gradients, which characterize 10%–20% of the global phytoplankton production that effectively fuels higher trophic levels. OPFish is relatively consistent with the spatial distribution of both pelagic and demersal fish landings and catches per unit of effort (LPUEs and CPUEs, respectively). An index of harvest relative to ocean productivity (HP index) is calculated by dividing these LPUEs or CPUEs with OPFish. The HP index reflects the intensity of fishing by gear type with regard to local fish production. Low HP levels indicate lower LPUEs or CPUEs than expected from oceanic production, suggesting over-exploitation, while high HP levels imply more sustainable fishing. HP allows comparing the production-dependent suitability of local fishing intensities. Our results from bottom trawl data highlight that over-exploitation of demersal species from the shelves is twice as high in the Mediterranean Sea than in the North-East Atlantic. The estimate of HP index by dominant pelagic and demersal gears suggests that midwater and bottom otter trawls are associated with the lowest and highest overfishing, respectively. The contrasts of fishing intensity at local scales captured by the HP index suggest that accounting for the local potential fish production can promote fisheries sustainability in the context of ecosystem-based fisheries management as required by international marine policies.

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How to cite 

Druon Jean‐noël, Gascuel Didier, Gibin Maurizio, Zanzi Antonella, Fromentin Jean-Marc, Colloca Francesco, Hélaouët Pierre, Coll Marta, Mannini Alessandro, Bluemel Joanna K, Piroddi Chiara, Bastardie Francois, Macias‐moy Diego, Vasilakopoulos Paraskevas, Winker Henning, Serpetti Natalia, Guillen Jordi, Palialexis Andreas, Gras Michaël, Hekim Zeynep, Dubroca Laurent, Pinto Cecilia, Steenbeek Jeroen, Martinsohn Jann Mesoscale productivity fronts and local fishing opportunities in the European Seas. Fish and Fisheries IN PRESS. Publisher's official version : https://doi.org/10.1111/faf.12585 , Open Access version : https://archimer.ifremer.fr/doc/00703/81542/