FN Archimer Export Format PT C TI Integrated understanding of initial conditions of early life stages using integrated ecosystem survey data BT AF PETITGAS, Pierre HURET, Martin DORAY, Mathieu BOURRIAU, Paul LUNVEN, Michel AS 1:1;2:1;3:1;4:1;5:1; FF 1:PDG-RBE-EMH;2:PDG-RBE-STH-LBH;3:PDG-RBE-EMH;4:PDG-RBE-EMH;5:PDG-ODE-DYNECO-PELAGOS; C1 Ifremer, France C2 IFREMER, FRANCE SI NANTES BREST SE PDG-RBE-EMH PDG-RBE-STH-LBH PDG-ODE-DYNECO-PELAGOS UR https://archimer.ifremer.fr/doc/00281/39177/37738.pdf LA English DT Poster CR PELGAS 2002 PELGAS 2003 PELGAS 2004 PELGAS 2005 PELGAS 2006 PELGAS 2007 PELGAS 2008 PELGAS 2009 PELGAS 2010 PELGAS 2011 PELGAS 2012 PELGAS 2013 PELGAS 2014 PELGAS 2015 BO Thalassa AB Since 2000, the yearly acoustic pelagic survey of Ifremer in the Bay of Biscay designed for fish stock assessment of small pelagic fish has been converted into an integrated pelagic ecosystem monitoring plateforme. This has been achieved by coupling sensors and automating data acquisition streams. The data series now spans from 2000 to 2014. Together with data sensors and sampling designs, we present here an integrated study allowing to understand the spawning process of anchovy. We compare the maps of anchovy eggs obtained with CUFES (continuous underway fish egg sampler) with that of their spawning adults sampled at the same time by acoustics and identification trawl hauls. The distributions of eggs are surprisingly different than that of adults, with in particular a shift in their gravity centres. The differences are characterized using geostatistics and interpreted with hydrological and meteorological information collected on board during the survey at stations. The initial conditions of early life stages are characterized. PY 2015 ID 39177 ER EF