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MEPS
Marine Ecology Progress Series

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MEPS 390:183-194 (2009)  -  DOI: https://doi.org/10.3354/meps08172

Variability in transport of fish eggs and larvae. II. Effects of hydrodynamics on the transport of Downs herring larvae

Mark Dickey-Collas1,*, Loes J. Bolle1, Jan K. L. van Beek2, Paul L. A. Erftemeijer2

1Wageningen IMARES - Institute for Marine Resources & Ecosystem Studies, PO Box 68, 1970 AB IJmuiden, The Netherlands
2DELTARES (formerly Delft Hydraulics), PO Box 177, 2600 MH Delft, The Netherlands

ABSTRACT: A 10-layered, finite-volume advection-dispersion model with real-time meteorological and freshwater runoff drivers investigated the interannual differences in the transport of Downs herring Clupea harengus L. larvae in the southern North Sea. Simulations were carried out for the winters of 1989 and 1996 to 2003. As they grew, the concentrations of herring larvae developed vertical behaviour. Meteorological forcing transported Downs herring larvae to the nursery grounds in the eastern North Sea with large interannual differences. Diel vertical movement was relatively unimportant in the transport of larvae in the hydrographically mixed southern North Sea. Year classes with less transport of larvae from the hatching area (which was generally warmer) were associated with greater abundances of young Downs herring in the ICES International Bottom Trawl Survey. This implies that retention, rather than dispersal or delivery of larvae to nursery grounds, is associated with the determination of year class strength in Downs herring.


KEY WORDS: Clupea harengus · Biophysical models · Downs · Recruitment · Nursery · Drift


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Cite this article as: Dickey-Collas M, Bolle LJ, van Beek JKL, Erftemeijer PLA (2009) Variability in transport of fish eggs and larvae. II. Effects of hydrodynamics on the transport of Downs herring larvae. Mar Ecol Prog Ser 390:183-194. https://doi.org/10.3354/meps08172

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