Scott M. Gallager
Woods Hole Oceanographic Institution, Woods Hole, MA
Tokyo University of Fisheries, Tokyo, Japan
Our objectives are:
1) To determine the effects of depth, the natural light field, and prey motility on foraging success in early cod larvae feeding on natural assemblages of microplankton prey on Georges Bank.
2) To determine the effects of light (intensity and optical contrast), turbulence intensity, and prey motility on the perceptive volume and foraging success in early cod larvae.
3) To describe the seasonal development of the microplankton prey field in terms of size, abundance, and motility characteristics across Georges Bank and surrounding regions.
4) To integrate the results of these studies into the three- dimensional advective/diffusion and IBM trophodynamics model of larval cod on Georges Bank being developed by Drs. Cisco Werner, Dan Lynch, John Loder, and Chris Naimie.
Quantifying foraging success as a function of turbulence, prey motility, and light intensity in these laboratory and field experiments will advance our ability to predict successful larval recruitment in the field in relation to the seasonally developing microplankton prey field. Data from these studies are critical to the successful modeling of bio-physical coupling and trophodynamics of larval cod and haddock larvae in relation to climate change.