Archive Institutionnelle de l'Ifremer

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The maritime economy includes the activities linked to the sea, namely: - Marine resource extraction: living resources and marine minerals, - Exploitation of marine space and of physical properties of marine waters (energy plants - using marine water as a heat sink, marine renewable energies, submarine cable laying, - maritime and coastal construction and public works, maritime transport, Navy), - Exploitation of seascapes (tourism, leisure, boating), - Resource processing (of living resources [...]
2014-10.   Rapport
Cury Philippe M;, Fromentin Jean-Marc, Figuet Sarah, Bonhommeau Sylvain
The relationship between spawning fish abundance and the number of offspring, the so-called stock-recruitment relationship, is crucial for fisheries management and conservation measures. Using the most comprehensive data set ever assembled, we quantify this relationship for 211 fish stocks worldwide, revealing a global pattern with a pervasive asymptotic shape that shows increasing recruitment reaching an upper limit for values around half to two-thirds of parental biomass. This corroborates [...]
2014-12.   Oceanography
Salton Marcus, Saraux Claire, Dann Peter, Chiaradia André
Using body mass and breeding data of individual penguins collected continuously over 7 years (2002–2008), we examined carry-over effects of winter body mass on timing of laying and breeding success in a resident seabird, the little penguin (Eudyptula minor). The austral winter month of July consistently had the lowest rate of colony attendance, which confirmed our expectation that penguins work hard to find resources at this time between breeding seasons. Contrary to our expectation, body mass [...]
2015-01.   Royal Society Open Science
La campagne annuelle de prospection du stock de coquilles Saint-Jacques Pecten maximus de la baie de Seine (COMOR44) a eu lieu du 4 au 23 juillet 2014. 183 traits de dragues ont été effectués sur l’ensemble de la zone de prospection. Pour l’ensemble des zones, la biomasse exploitable n’est constituée que par des coquilles de 3 ans et plus, la cohorte de 2 ans née en 2012 constituant le recrutement étant pratiquement nulle. Par ailleurs, la croissance observée est faible pour l’ensemble des [...]
2014-10.   Rapport
Huse Geir, Mackenzie Brian R., Trenkel Verena, Doray Mathieu, Nottestad Leif, Oskarsson Guomundur J.
The north Atlantic is a productive marine region which has supported important commercial fisheries for centuries. Many of these fisheries have exploited the pelagic species, including herring, blue whiting and tuna. Here we present data on the distribution of herring and blue whiting based on surveys in the Norwegian Sea, the Bay of Biscay and Celtic Sea. We also present catch data on bluefin tuna, which has been depleted for decades, but historically used to be a key predator on the other [...]
2014.   Earth System Science Data Discussions
Doscher R., Vihma Timo, Maksimovich Elena
Sea ice is the central component and most sensitive indicator of the Arctic climate system. Both the depletion and areal decline of the Arctic sea ice cover, observed since the 1970s, have accelerated since the millennium. While the relationship of global warming to sea ice reduction is evident and underpinned statistically, it is the connecting mechanisms that are explored in detail in this review. Sea ice erodes both from the top and the bottom. Atmospheric, oceanic and sea ice processes [...]
2014.   Atmospheric Chemistry And Physics
Reul Nicolas, Quilfen Yves, Chapron Bertrand, Fournier Severine, Kudryavtsev Vladimir, Sabia Roberto
An analysis is presented for the spatial and intensity distributions of North Atlantic extreme atmospheric events crossing the buoyant Amazon-Orinoco freshwater plume. The sea surface cooling amplitude in the wake of an ensemble of storm tracks traveling in that region is estimated from satellite products for the period 1998-2012. For the most intense storms, cooling is systematically reduced by approximate to 50% over the plume area compared to surroundings open-ocean waters. Historical [...]
2014-12.   Journal Of Geophysical Research-oceans
Gohin Francis, Bryere Philippe, Griffiths Joshua
A succession of storms during the winter 2013-2014 enhanced the resuspension of sediments in the surface waters of the North-West European shelf seas. The effects of waves on satellite-derived non-algal SPM (Suspended Particulate Matters) are discussed for the January 2008-March 2014 period. A simple statistical model relating locally SPM to tidal intensity and waves help us analyse the main characteristics of the winter 2013-2014. The exceptional run of storms observed in this stormy and rainy [...]
IN PRESS.   Journal of Marine Systems
Brissard Charline, Herve Fabienne, Sibat Manoella, Sechet Veronique, Hess Philipp, Amzil Zouher, Herrenknecht Christine
The presence of Ostreopsis cf. ovata on the Mediterranean coast represents a serious concern to human health due to production of toxins–putative palytoxin and ovatoxins (ovatoxin-a, -b, -c, -d, -e, -f and -g). However, purified ovatoxins are not widely available and their toxicities are still unknown. In the present study, we report on HR LC-MS/MS analysis of a French Ostreopsis cf. ovata strain (IFR-OST-0.3 V) collected at Villefranche-sur-Mer (France) during a bloom in 2011. Investigation of [...]
IN PRESS.   Journal of Chromatography A
Krause Gesche, Brugere Cecile, Diedrich Amy, Ebeling Michael W., Ferse Sebastian C.A., Mikkelsen Eirik, Perez Agundez José A., Stead Selina M., Stybel Nardine, Troell Max
IN PRESS.   Aquaculture
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