What is plankton?
Live in the water column
Too small/weak to swim against counter currents
Nutrient limited - not found in the open ocean but at coastal upwellings
What is zooplankton?
Planktonic protists and animals ranging from single celled organisms to krill and small fish
What is holoplankton?
Spends all life as plankton
What is meroplankton?
Spends only part of its life as plankton
What is bacteriophage?
Invade bacterial hosts - extremely abundant
What are staphylococcus?
Bacterial cells that are larger than virus cells
What is Cyanobacteria?
Blue/green algae Single celled prokaryote Solitary/colonial Photosynthetic Some are nitrogen fixing Probable origin of chloroplasts