PEGASE 98

Type Oceanographic cruise
Ship Thalassa
Ship owner Ifremer
Dates 20/05/1998 - 21/06/1998
Chief scientist(s) MASSE Jacques

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 10.17600/98040070
Objective The PEGASE98 was second in a series of three cruises, in the frame of the "ecology of small pelagics in the Bay of Biscay" programme, and took place aboard RV Thalassa from 20/5 to 21/6/1998. The programme aims to supplement knowledge about inter-annual variations in anchovy abundance and distribution, taking account of bio-ecological aspects affecting them. To that end, the conditions of primary and secondary production, the hydrological situation and the distribution and abundance of anchovy larvae and adults as well as other pelagic species sharing the same space at this time of year were studied. The cruise also combined systematic acoustic prospecting of the zone where anchovies were potentially present, pelagic trawl hauls, plankton catches and hydrological observations. The cruise had two phases: (1) initial acoustic prospecting in the southern Bay of Biscay in order to determine the distribution and abundance of anchovies in this sector at this time of year, along with observations of the hydrology, climate and plankton (2) observing, on a finer scale, the concentrations seen in the first exploration, on three study site zones, the first facing the Gironde River, the second offshore from the "Horseshoe" shelf break and the third midway between them. The related project is "Ecology of small pelagics"

Data managed by SISMER

Bibliography

Publications

Ruffine LivioORCID, Donval Jean-Pierre, Croguennec Claire, Bignon Laurent, Birot Dominique, Battani Anne, Bayon Germain, Caprais Jean-Claude, Lanteri Nadine, Levache Denis, Dupre StephanieORCID (2017). Gas Seepage along the Edge of the Aquitaine Shelf (France): Origin and Local Fluxes. Geofluids, 2017(4240818), 1-13. Publisher's official version : https://doi.org/10.1155/2017/4240818 , Open Access version : https://archimer.ifremer.fr/doc/00394/50579/


Dupre StephanieORCID, Berger LaurentORCID, Le Bouffant Naig, Scalabrin CarlaORCID, Bourillet Jean-FrancoisORCID (2014). Fluid emissions at the Aquitaine Shelf (Bay of Biscay, France): A biogenic origin or the expression of hydrocarbon leakage? Continental Shelf Research, 88, 24-33. Publisher's official version : https://doi.org/10.1016/j.csr.2014.07.004 , Open Access version : https://archimer.ifremer.fr/doc/00201/31192/


Lassalle Geraldine, Pasqual Jean-Sebastien Nelva, Boet Philippe, Rochet Marie-Joelle, Trenkel VerenaORCID, Niquil Nathalie (2014). Combining quantitative and qualitative models to identify functional groups for monitoring changes in the Bay of Biscay continental shelf exploited foodweb. Ices Journal Of Marine Science, 71(1), 105-117. Publisher's official version : https://doi.org/10.1093/icesjms/fst107 , Open Access version : https://archimer.ifremer.fr/doc/00173/28427/


Lassalle Geraldine, Gascuel Didier, Le Loch Francois, Lobry Jeremy, Pierce Graham John, Ridoux Vincent, Santos Maria Begona, Spitz Jerome, Niquil Nathalie (2012). An ecosystem approach for the assessment of fisheries impacts on marine top predators: the Bay of Biscay case study. Ices Journal Of Marine Science, 69(6), 925-938. Publisher's official version : https://doi.org/10.1093/icesjms/fss049 , Open Access version : https://archimer.ifremer.fr/doc/00087/19855/


Lassalle G., Lobry J., Le Loc'h F., Bustamante Paco, Certain Gregoire, Delmas Daniel, Dupuy C., Hily Christian, Labry ClaireORCID, Le Pape O., Marquis Elise, Petitgas PierreORCID, Pusineri Claire, Ridoux Vincent, Spitz J., Niquil Nathalie (2011). Lower trophic levels and detrital biomass control the Bay of Biscay continental shelf food web: Implications for ecosystem management. Progress In Oceanography, 91(4), 561-575. Publisher's official version : https://doi.org/10.1016/j.pocean.2011.09.002 , Open Access version : https://archimer.ifremer.fr/doc/00057/16851/


Bergeron Jean-Pierre (2009). Nutritional condition of anchovy Engraulis encrasicolus larvae in connection with mesozooplankton feeding catabolism in the southern Bay of Biscay, NE Atlantic. Journal Of Experimental Marine Biology And Ecology, 377(2), 76-83. Publisher's official version : https://doi.org/10.1016/j.jembe.2009.06.019 , Open Access version : https://archimer.ifremer.fr/doc/00000/6473/


Bergeron Jean-Pierre (2004). Contrasting years in the Gironde estuary (Bay of Biscay, NE Atlantic) springtime outflow and consequences for zooplankton pyruvate kinase activity and the nutritional condition of anchovy larvae: an early view. ICES Journal of Marine Science, 61(6), 928-932. Publisher's official version : https://doi.org/10.1016/j.icesjms.2004.06.019 , Open Access version : https://archimer.ifremer.fr/doc/00000/448/


Puillat IngridORCID, Lazure PascalORCID, Jegou Anne-Marie, Lampert LuisORCID, Miller P (2004). Hydrographical variability on the French continental shelf in the Bay of Biscay, during the 1990s. Continental Shelf Research, 24(10), 1143-1163. Publisher's official version : https://doi.org/10.1016/j.csr.2004.02.008 , Open Access version : https://archimer.ifremer.fr/doc/00000/779/


References of Articles published in other Periodicals or Scientific Works acclaimed in the Field

Labry ClaireORCID, Herbland Alain, Delmas Daniel (2002). The role of phosphorus on planktonic production of the Gironde plume waters in the Bay of Biscay. Journal of plankton research, 24(2), 97-117. Open Access version : https://archimer.ifremer.fr/doc/00000/690/


References of Technical Reports

Petton BrunoORCID (1999). Compte Rendu de la campagne Pégase 98. Mission embarquée. Golfe de Gascogne du 20/05/98 au 21/06/98.


Moguedet Philippe (1998). Conférence IEO/IFREMER pour le développement de recherches intégrées sur le Golfe de Gascogne (Santander, 25-27 novembre 1998). Document de synthèse.


Thesis using campaign data

Torelli Martina (2021). Modélisation des processus du méthane microbien en milieu marin : de la source aux émissions. Aperçus de l’analyse des bassins / Modelling Microbial Methane Processes in Marine Environments: from Source to Seep. Insights from Basin Analysis. PhD Thesis, Université Sorbonne.


Michel Guillaume (2017). Mise en place et pérennisation d'un vaste système fluide microbien sur le plateau aquitain : caractérisation et facteurs de contrôle. PhD Thesis, Université Paris 06. https://archimer.ifremer.fr/doc/00886/99769/


Plounevez Serge (1999). Environnement biotique et comportement trophique de l’anchois (Engraulis encrasicolus L.) dans le golfe du Lion et le golfe de Gascogne. PhD Thesis, Université de la Méditerranée.