Copepod grazing during a mesocosm study of an Emiliania huxleyi (Prymnesiophyceae) bloom

Abstract Five bottle incubation experiments were done to investigate the grazing and food selection by the copepod Calanus finmarchicus(Gunnerus) during a phytoplanktonbloom in aN and P fertilized mesocosm. The phytoplanktonbiomass was dominated by diatomsand lager dinoflagellates( 35 µm), and selective copepodpredation may have controled the development of these protistsin the mesocosm. However, diatomsmade up the largest part of the copepodcarbon ingestion due to their dominance in the plankton. The haptophytesE. huxleyi and Phaeocystiscf. pouchetii were not prefeITe...