FFS Walther Herwig III 298

Cruise plan

Cruise Info. 
Ship name (ship code)FFS Walther Herwig III (06NI)
Cruise identifier298
Cruise period2007-03-20 — 2007-04-24
Port of departureBremerhaven, Germany
Port of returnBremerhaven, Germany
ObjectivesThe survey forms a part of an ICES-co-ordinated international study in the Eastern North Atlantic conducted during the first part of 2007. This investigation takes place trienially since the late seventies and is organised by the ICES Working Group WGMEGS. The main objective of this series of individual cruises from January until August is to produce both an index and a direct estimate of the biomass of the the north east Atlantic mackerel stock and the southern and western horse mackerel stocks. This survey is the only source providing fishery independent information of these stocks. The method is to quantify the freshly spawned eggs in the water column on the spawning grounds on the one hand. This is done by using a plankton sampler with an online probe. On the other hand the fecundity of the females must also be determined. This is done by sampling sufficient numbers of gonads by trawling. In 2007 a total of 13 individual cruises will be carried out, with the contribution of 8 European institutes. The cruise 298 of the "Walther Herwig III" on the mackerel and horse mackerel stocks is a contribution to the international efforts to assess and manage this stock.
Chief scientistJens Ulleweit (Federal Research Centre for Fisheries, Hamburg)
Coordinating bodyInternational Council for the Exploration of the Sea (ICES)
NPRCFFS Walther Herwig III 298 NPRC waltherherwig_298.pdf (0.52 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificWest of the UK, Ireland and France