The Transport Of Cod, Gadus Morhua, And Haddock, Melogrammus Aeglefinus, Eggs On Georges Bank, 1995-1999 ...

• Main Authors: Mountain, D., Green, J., Sibunka, J., Johnson, D.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: ASC 2003 - O - Theme session 2024
• Subjects: Fisheries and aquaculture; Oceanic Northeast Atlantic ICES Ecoregion; Ecosystem observation, processes and dynamics; Gadus morhua; Northeast Atlantic
• Online Access: https://dx.doi.org/10.17895/ices.pub.25348705.v1; https://ices-library.figshare.com/articles/conference_contribution/The_Transport_Of_Cod_Gadus_Morhua_And_Haddock_Melogrammus_Aeglefinus_Eggs_On_Georges_Bank_1995-1999/25348705/1

No abstracts are to be cited without prior reference to the author.Monthly ichthyoplankton surveys were conducted during the U.S. GLOBEC Georges Bank program (1995–1999) to study the development of the cod, Gadus morhua, and haddock, Melogrammus aeglefinus, year-classes on the bank. Annual egg mortality rates determined from the survey data for both species varied by a factor of two over the program. Comparisons with time series of local wind stress suggest that the interannual variability in egg mortality rate was associated with interannual variability in wind forcing. Model simulations of egg drift were conducted using a flow field based on the climatological mean circulation plus a time-dependent wind-driven flow. The modelled drift simulations for the period from the early egg stage through to egg hatching support the conclusion that variability in wind-driven loss was a major factor in the observed interannual variability in egg mortality for both cod and haddock. ...