A general seminar about the NSF funded Foraging in Marine Zooplankton project

1. Foray foraging behavior in marine copepods James J Pierson University of Maryland Center for Environmental Science Horn Point Lab Andrew W. Leising NOAA/SWFSC Environmental Research Division Bruce W. Frost University of Washington School of Oceanography

3. Diel Vertical Migration

5. Diel Vertical Migration

7. ♀♀ Nighttime Vertical Distribution ●—— -● 108–50 m □— —□ 50–25 m ○- - - - ○ 25–0 m Dagg, Frost, & Newton. 1998. J Mar Sys 15(1-4):503-509

8. Diel Vertical Migration + Foray Foraging Behavior Hunger/Satiation hypothesis, Pearre 2003

17. Model interface Adapted from: Leising, Pierson, Cary, & Frost. 2005. Journal of Plankton Research 27 (10):987-1001

18. Model: Individual behavior affects distribution Adapted from: Leising, Pierson, Cary, & Frost. 2005. Journal of Plankton Research 27 (10):987-1001

20. Mortality effects Forays allow for less mortality with higher ingestion Adapted from: Leising, Pierson, Cary, & Frost. 2005. Journal of Plankton Research 27 (10):987-1001

28. Trapping Zooplankton: Now Adapted from: Pierson et al. submitted to Limnology & Oceanography Methods

32. Individual measurements

35. Flux Calculations

36. Trap & Net data C. pacificus ♀ M. pacifica ♀ C. pacificus ♂ 12 Oct. 2006 (left) 24 Oct. 2006 (right)

37. Flux 12 Oct. 2006 24-25 Oct. 2006

41. Gut Fluorescence vs. Gut Fullness Good relationship between our gut content indices

42. How do model results & field observations compare? Model results Field observations Not bad… But more variability in field measurements Adapted from: Leising et al. 2005 Journal of Plankton Research