Every three years, there is an internationally coordinated mackerel/horse mackerel egg survey covering the Atlantic Ocean from Southern Portugal to the west of Schotland (A). The Netherlands monitors and samples the region from the Gulf of Biscay to the Celtic Sea - depending on ship time and ship availability.

Zooplankton and zoobenthos morphological parameters; Fish morphology, age and physiology; Fish taxonomy-related abundance per unit area of the bed; Zooplankton and zoobenthos development stage parameters; Raw temperature and/or salinity instrument output

Plankton nets; pelagic trawl nets; CTD

Every three years, there is an internationally coordinated mackerel/horse mackerel egg survey covering the Atlantic Ocean from Southern Portugal to the west of Scotland (A). The Netherlands monitors and samples the region from the Gulf of Biscay to the Celtic Sea - depending on ship time and ship availability. Each year after the international Atlantic survey, thus also every three years, there is a mackerel egg survey in the North Sea (B). It is carried out by the Netherlands and Norway. The main tasks during these egg surveys are sampling and counting mackerel and horse mackerel eggs as well as sampling mature females to determine their age and fecundity.

Wageningen Marine Research, IJmuiden
Haringkade 1
IJmuiden

1976 CP
Netherlands