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Oceanography Ch 12

The Plankton

Autotrophic pertaining to organisms able to manufacture their own food from inorganic substances
Diatom microscopic unicellular alga with an external skeleton of silica.
Dinoflagellate member of the plankton. Some species are photosynthetic and others are not
Coccolithophorid microscopic, planktonic alga surrounded by a cell wall with embedded calcareous plates
Frustule siliceous external shell of a diatom
Bloom high concentration of phytoplankton in an area, caused by increased reproduction; often produces discoloration of the water
Heterotrophic pertaining to organisms requiring organic compounds for food; unable to manufacture food from inorganic compounds
Krill small, shrimplike crustaceans found in huge masses in polar waters and eaten by baleen whales…at the bottom of the food chain...
Radiolarian single-celled protozoans with siliceous tests
Red tide red coloration, usually of coastal waters, caused by large quantities of microscopic organisms (generally dinoflagellates); some red tides result in mass fish kills, others contaminate shellfish, and still others produce no toxic effects.
Harmful Algal Blooms term used to describe both toxic and nuisance phytoplankton blooms
Created by: Permian