1. Primary Producers of the Marine Environment;
Opener
Primary Producers of the Marine Environment;
The Microbial World

2. Microorganisms are the most important primary producers in many marine environments.
Provide nutrients for other microorganisms
Play critical roles in the marine food web
Prokaryotes
Cyanobacteria (blue – green algae)

3. Mounds deposited by cyanobacteria made up of calcium
Fig. 5.4
Mounds deposited by cyanobacteria made up of calcium

4. Symbiotic bacteria reside in marine animals
Symbiotic bacteria reside in marine animals. Some of these bacteria are toxic to humans and other predators to these organisms.

5. Archaea
Simplest, most primitive, and closely related to eukaryotes

7. Unicellular Algae
Very diverse group of simple, mostly aquatic, photosynthetic organisms
Protists
Lack specialized tissues
Range in size

8. Diatoms
Reproduce via asexual reproduction
Plankton, silica shell, cold open-water
Skeletons settle to the bottom of the sea floor
Create diatomaceous ooze.

9. Diatomaceous earth has been mined
used in products such as filters for swimming pools, temperature and sound insulators, and mild abrasives for toothpaste.
Domoic Acid

10. Dinoflagellates
Unicellular organisms w/2 unequal flagella
Bioluminescence
Zooxanthellae
symbiotic with coral reefs

11. Fig. 5.8
Dinoflagellate with cell wall. This species is bioluminescent and produces red tides.

13. Pl
Fig. 5.10
Phytoplankton made of calcium carbonate or silica and are photosynthetic

14. Protozoans: Animal – Like Protist

15. Foraminiferans

16. Radiolarians
Demonstrating features for capturing food prey and remaining buoyant.
Shells are made primarily of silica, cover ocean floor.

17. Fungi

19. Fig. 5.14