Modeling growth of Atlantic cod larvae on the southern flank of Georges Bank in the tidal-front circulation during May 1999

摘要: Abstract Cruises were conducted in spring 1999 to describe the interaction between tidal-front processes and transport, retention, growth of cod larvae their prey during seasonal transition a stratified water-column along southern flank Georges Bank. All physical biological observations integrated coupled circulation-trophodynamic simulations. The three-dimensional circulation fields modeled using data assimilation methods described Aretxabaleta et al. [2005. Data assimilative hindcast on Southern Flank Bank May 1999: frontal implications. Continental Shelf Research 25, 849–874]. individual-based model (IBM) Lough A general biophysical larval applied populations Fisheries Oceanography 14, 241–262] was used consider trophodynamic effects survival cod. Prey specified for mixed water columns from field surveys allowed adjust model. Encounter ingestion rates functions concentration, search patterns, light, swimming speeds predator prey, turbulence. Model outputs provide hourly depth-dependent estimates rates, biomass ingested, length weight. Simulations 2-D transect across tidal front, columns, before after wind event. Pre-storm, observed based RNA–DNA analysis, highest surface 20 m at front stations. Post-storm, decreased 1–2% d −1 stations, corresponding with