1. Saltwater/Marine
1.1. Coastal Zone
1.1.1. warm
1.1.2. nutrient rich
1.1.3. shallow water
1.1.4. aquatic systems
1.1.4.1. estuaries
1.1.4.1.1. seawater + freshwater
1.1.4.2. coastal wetlands (mangrove forests,coastal marshes)
1.1.4.2.1. high nutrient inputs
1.1.4.2.2. ample sunlight
1.1.4.3. coral reefs
1.1.4.3.1. highly diverse/productive
1.1.4.4. sea grass beds
1.1.4.4.1. highly productive
1.1.4.4.2. high NPP
1.1.4.4.3. ample sunlight & nutrients
1.2. Open Sea
1.2.1. Euphotic Zone
1.2.1.1. brightly lit
1.2.1.2. oxygen levels high
1.2.1.3. nutrient levels low
1.2.1.4. upwelling zones
1.2.1.4.1. coastal winds + diff. in water temp drive up water from deep waters & bring nutrients
1.2.1.5. phytoplankton,swordfish,sharks,bluefin tuna
1.2.2. Bathyal Zone
1.2.2.1. dimly lit
1.2.2.2. no photosynthesizing producers
1.2.3. Abyssal Zone
1.2.3.1. dark,cold
1.2.3.2. no sunlight, little dissolved oxygen
1.2.3.3. nutrient levels high
1.2.3.4. marine snow
1.2.3.5. deposit feeders, filter feeders
1.3. Ocean Bottom
2. Freshwater
2.1. Lotic
2.1.1. Streams/Rivers
2.1.1.1. Source Zone
2.1.1.1.1. headwater streams
2.1.1.2. Transition Zone
2.1.1.2.1. wide,deep,warm streams
2.1.1.3. Floodplain Zone
2.1.1.3.1. wide, deep rivers
2.2. Lentic
2.2.1. Lakes
2.2.1.1. Oligotrophic (deep)
2.2.1.1.1. Littoral (top) Zone
2.2.1.1.2. Limnetic Zone
2.2.1.1.3. Profundal Zone
2.2.1.1.4. Benthic Zone
2.2.1.2. Eutrophic (shallow)
2.2.1.2.1. lots of nutrients
2.2.1.2.2. murky water
2.2.1.2.3. high turbidity
2.2.1.2.4. high NPP
2.2.2. Inland Wetlands
2.2.2.1. plants
2.2.2.1.1. cattails,bulrushes, red maple
2.2.2.2. animals
2.2.2.2.1. fishes, muskrats, otters, beavers, migratory waterfowl
2.2.2.3. abundance of nutrients
2.2.2.4. highly productive