FEBBE-4 LEG1

Type Oceanographic cruise
Set This cruise is part of the set FEBBE
Ship Thalia
Ship owner Ifremer
Dates 03/10/2014 - 15/10/2014
Chief scientist(s) LAFFARGUE Pascal ORCID

ÉCOLOGIE ET MODÈLES POUR L'HALIEUTIQUE

Centre Ifremer de Nantes

Rue de l'Ile d'Yeu

BP 2105

44311 Nantes Cedex 3

+33 (0)2 40 37 41 67

DOI 10.17600/14009400
Objective The FEBBE-4 cruise (in 2 legs) is the equivalent of the FEBBE-3 cruise, both of them following on from the FEBBE-1 & 2 cruises, with the main objective of collecting data on the effects of bottom trawls on the habitat and structure of benthic communities. FEBBE-4 is part of the European BENTHIS project aiming to assess the impacts of bottom trawling on various European marine ecosystems and to develop alternatives to the most harmful practices. The major physical impact of fishing gear involves the alteration of the sea floor and re-suspension of sediments. FEBBE-1 & 2 (2013) provided an initial description of the sediments and fauna encountered and their modifications depending on different levels of fishing effort. In 2014, FEBBE-4's objectives are to quantify the direct impact of 2 types of fishing gear on the sea bed (validating numerical models and quantifying the thicknesses of reworked sediments), assess contributions of different parts of trawls and describe the behaviour of re-suspended sediments. The FEBBE-3 cruise aimed to analyze the impacts of the "conventional" gear used in Nephrops prawn fisheries. FEBBE-4 focuses on analyzing the effects due to an alternative "Jumper" type gear. Detailed examination of sediment morphology using imagery at different periods of the year in a targeted area will make it possible to evaluate the persistence of physical impacts observed on the bottom. A biological strand will complement these observations, with the main aim of assessing induced mortality of benthic species and their distribution on the sea bed after a trawl has passed.

Data managed by SISMER

Bibliography

Publications

Mengual Baptiste, Cayocca Florence, Le Hir Pierre, Draye Robin, Laffargue PascalORCID, Vincent BenoitORCID, Garlan Thierry (2016). Influence of bottom trawling on sediment resuspension in the 'Grande-Vasière' area (Bay of Biscay, France). Ocean Dynamics, 66(9), 1181-1207. Publisher's official version : https://doi.org/10.1007/s10236-016-0974-7 , Open Access version : https://archimer.ifremer.fr/doc/00353/46428/


References of Technical Reports

Sala Antonello, Nielsen Rasmus, Polet Hans, Laffargue PascalORCID, Smith Chris, Zengin Mustafa, Rijnsdorp Adriaan (2016). Report on technological innovations and management scenario’s to mitigate fishing impacts on the benthic ecosystem and their socio-economic consequences in regional seas. BENTHIS Deliverable 7.9. https://archimer.ifremer.fr/doc/00425/53635/


Sala Antonello, Nielsen J. Rasmus, Rijnsdorp Adriaan D., Polet Hans, Laffargue PascalORCID, Smith Chris, Zengin Mustafa (2016). Report on results of sea trials in the regional seas. BENTHIS Deliverable 7.8. https://archimer.ifremer.fr/doc/00425/53649/