Freshwater Biomes-Salt concentration < 1% -Ponds and Lakes -Streams and Rivers -Wetlands

Ponds and Lakes-Lentic Systems= non-flowing water-Range in size-Limited species diversity-”Zones” determined by depth

Ponds and LakesLittoral ZoneLimnetic ZoneProfundal Zone

Streams and Rivers-Lotic Systems = flowing water-Moves in one direction-Characteristics change from source to mouth-High species diversity

Wetlands-Areas of standing water that support aquatic life-Highest species diversity-May be dry part of year

Marine Biomes-Saltwater ecosystems-Oceans-Coral Reefs-Estuaries

Oceans-Largest Ecosystem-Great species diversity-”Zones” determined by depth

OceansIntertidal ZonePelagic ZoneAbyssal ZoneBenthic Zone

Coral Reefs-Found in warm, shallow water-Barriers along continents-Dominant organism is coral

Estuaries-Where ocean water meets fresh water-Brackish water-Unique ecosystem