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Homogeneous
Uniform composition
Heterogeneous
Non-uniform Composition
C:N:P Ratio
106:16:1
Limiting Nutrient
Nitrogen
Mixing depth
Thermocline
POM
Live Organic Matter
DOM
Dissolved Organic matter
Producers need…?
Light
Nutrients
Producers
Critical depth
Resperation=Photosysnthisis
Zooplankton
Animal plankton
Meroplankton
PArt of the animal’s life cycle is as plankton
Holoplankton
Entire life spent as plankton
Microalgae
Kelp/seaweed
Phytoplankton
Diverse single-celled
Heterotrophs
Consumers
Mixotrophs
Mixed nutrition
Autotrophs
Producers
How long ago did photosynthesis start?
3.5 billion years ago
Aphotic zone
Bottom
Disphotic zone
Twilight zone
Euphotic zone
Middle top
Photic zone
Top
Beers Law
Light through liquid
Plankton
Ocean drifters
Primary producers
Phytoplankton
Macroalgae
Seagrass
Hadley cells
Equator to 30 N/S
Ferrel cells
30-60 N/S
Polar cells
60-pole N/S
Biogenous sediment
Organic 55%
Calcareous ooze
Coccolithophores
Foraminifera
Pteropods
Siliceous ooze
Protozoa
Diatoms
Silicoflagellates