Life in the Ocean

1
Life in the Ocean
2

• Matter
• Energy

3
Biogeochemical Cycles

• Carbon
• Nitrogen
• Phosphorus
• Silicon

4

• Iron and Other Trace Metals
• Limiting Factors
• Evolution and Life in the Ocean
• Classification of Oceanic Life

5
Physical Factors Affecting Marine Life

• Light
• Temperature
• Metabolic rate
• Ectothermic
• endothermic
• Salinity
• Dissolved Nutrients
• Dissolved Gases
• Hydrostatic Pressure
• Interplay of Factors

6
Biological Factors

• Passive transport
• Diffusion, Osmosis
• Active transport
• Surface to Volume Ratio
• Gravity and Buoyancy
• Viscosity and Movement
• Drag
• turbulence
• Water Movement

7
Gravity and Buoyancy
8
Classification of the Marine Environment

• Classification by Light
• Photic Zone
• Euphotic
• Disphotic
• Aphotic Zone

9
Classification by Location

• Pelagic zone
• Neritic
• Oceanic
• Epipelagic
• Mesopelagic
• Bathypelagic
• Abyssopelagic
• Benthic
• Subneritic
• Littoral
• sublittoral
• Suboceanic
• Bathal
• Abyssal
• Hadal

10
Classification by Behavior

• Plankton
• Nekton