1. Primary Production and the Function of Organisms in the Process
May 2nd/3rd Notes:
13.a & 13.b
Primary Production and the Function of Organisms in the Process

2. What is primary productivity?
TODAY’S TARGET: I can define primary productivity using target vocabulary.
What is primary productivity?
Rate energy is stored in organic matter
TWO KINDS:
Photosynthesis uses solar radiation (99.9% of marine life relies directly or indirectly on photosynthesis for food)
Chemosynthesis uses chemical reactions
13. Primary Production

3. primary production half
TODAY’S TARGET: I can define primary productivity using target vocabulary.
A key indicator of the ocean’s health is ___________ ______________.
primary production
half
About ____________ of all net primary productivity occurs in the ocean.
13. Primary Production

4. TODAY’S TARGET: I can differentiate between gross and net primary productivity using target vocabulary.
Primary productivity can be defined as the total quantity of carbon fixed by ____________________.
autotrophs
Net primary production is the gain in new organic material by a population after deducting the part of primary production that is broken down by respiration to yield energy for life processes.
Gross primary production is the total amount of mass of organic material produced by autotrophs.
13. Primary Production

6. Photosynthesis accounts for ______ of the primary productivity in the ocean.
(Photosynthesis converts inorganic molecules into an organic molecule.)
95%
13. Primary Production

7. Capture plankton (w/ a net) Ocean color (Chlorophyll colors seawater)
How can we take a measurement of primary productivity?
Capture plankton (w/ a net)
Ocean color (Chlorophyll colors seawater)
SeaWiFs on satellite
1. Plankton net 2.
3. Sea-Viewing Wide Field-of-View Sensor
13. Primary Production

8. Autotrophy Heterotrophy
TODAY’S TARGET: I can identify organisms as autotrophs or heterotrophs.
Autotrophy
The process of self-feeding by producing energy-rich organic compounds
Heterotrophy
The process of obtaining energy-rich organic compounds by consuming other plants or animals
The process of self-feeding by producing energy-rich organic compounds
The process of obtaining energy-rich organic compounds by consuming other plants or animals
13. Primary Production

9. TODAY’S TARGET: I can compare and contrast photosynthesis and respiration using target vocabulary.
13. Primary Production

10. Types of photosynthetic marine organisms
TODAY’S TARGET: I can determine the function of different organisms in terms of primary production using target vocabulary.
Types of photosynthetic marine organisms
Anthophyta (Seed-bearing plants)
Macroscopic (large) algae
Microscopic (small) algae
Photosynthetic bacteria

11. Anthophyta Only in shallow coastal waters
TODAY’S TARGET: I can determine the function of different organisms in terms of primary production using target vocabulary.
Anthophyta
Only in shallow coastal waters
Primarily grasses and mangroves

12. Macroscopic algae “Seaweeds” Brown algae Green algae
TODAY’S TARGET: I can determine the function of different organisms in terms of primary production using target vocabulary.
Macroscopic algae
“Seaweeds”
Brown algae
Green algae
Red algae (most abundant and most widespread)
Varied colors

13. Microscopic algae Produce food for 99% of marine animals
TODAY’S TARGET: I can determine the function of different organisms in terms of primary production using target vocabulary.
Microscopic algae
Produce food for 99% of marine animals
Most planktonic
Golden algae
Diatoms (tests of silica)
Coccolithophores (plates of calcium carbonate)
Dinoflagellates
Red tide (harmful algal bloom)
Toxins
Fish kills
Human illness

14. Photosynthetic bacteria
TODAY’S TARGET: I can explain the importance of bacteria in oceanic primary productivity using target vocabulary.
Photosynthetic bacteria
Extremely small
May be responsible for half of total photosynthetic biomass in oceans

15. TODAY’S TARGET: I can explain the importance of bacteria in oceanic primary productivity using target vocabulary.
Photosynthetic bacteria are responsible for _________ of the ocean primary productivity and are the most abundant organisms in the ocean!
half
13. Primary Production