Lecture 3 Marine Primary Producers

Lecture 3 Marine Primary Producers - 2. Symbiotic 3....

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Marine Primary Producers I. Food Chain a. Each level is called a trophic level b. Bottom trophic level is known as primary producers II. Marine Primary Producers a. Three main types: i. Phytoplankton 1. Plankton means drifting a. Can’t swim, can only drift or move is a small area 2. Unicellular 3. Photosynthetic 4. 4 main groups: a. Diatoms i. Protists ii. Silicate cell walls (glass) iii. Pill-box (like an altoid tin) structure iv. Non-motile (can’t move) v. Asexual/sexual reproduction vi. Diatomaceous earth b. Dinoflagellates i. Protist ii. Motile – 2 flagella iii. Cellulose cell walls iv. Bioluminescent v. Life Styles: 1. Photosynthetic/free living
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Unformatted text preview: 2. Symbiotic 3. Heterotrophic c. Coccolithophorids i. Protist ii. Small, flagellated iii. Calcium carbonate cell walls (chalk) d. Cyanobacteria i. Bacteria ii. Filamentous and unicellular iii. Do nitrogen fixation ii. Seaweeds 1. Multi-cellular a. Not sophisticated enough to be a part of plant system 2. In most cases are anchored and remain in shallow water 3. Three groups of seaweeds: a. Brown b. Red c. Green iii. True plants 1. Truly Marine Plants a. Seagrasses 2. Salt-Tolerant Plants a. Spartina (salt marsh) b. Mangrove...
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Lecture 3 Marine Primary Producers - 2. Symbiotic 3....

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