Aquatic Biodiversity G. Tyler Miller’s Living in the Environment 14 th Edition Chapter 7 G. Tyler Miller’s Living in the Environment 14 th Edition Chapter 7

Key Concepts  Factors that influence aquatic systems  Saltwater life zones  Freshwater life zones  Human activities that affect aquatic systems

Aquatic Environments: Types, Components, and Limiting Factors  Marine systems  Freshwater systems  Plankton  Nekton  Benthos  Euphotic zone  Dissolved oxygen Fig. 7-2 p. 128

Saltwater Life Zones  Coastal zone  Estuaries  Coastal wetlands  Mangroves  Intertidal zones  Barrier islands

Ocean Zones Fig. 7-6 p. 131

Coral Reefs Fig p. 136

Freshwater Life Zones  Standing water  Flowing water Fig p. 139

Types of Lakes: Oligotrophic Fig. 7-17a, p. 139

Types of Lakes: Eutrophic Fig. 7-17b, p. 139

Life Zones in Lakes  Littoral zone  Limnetic zone  Profundal zone  Benthic zone  Littoral zone  Limnetic zone  Profundal zone  Benthic zone

Stream Systems  Runoff  Watershed  Drainage basin  Floodplain Fig p. 140

Wetlands  Importance of Wetlands  Types:  Marshes  Swamps  Prairie Potholes  Floodplain  Tundra  Seasonal  Importance of Wetlands  Types:  Marshes  Swamps  Prairie Potholes  Floodplain  Tundra  Seasonal

Human Impacts on Wetlands and Streams  Dams, diversions and canals  Flood control levees and dikes  Pollution and Eutrophication  Wetland destruction  Dams, diversions and canals  Flood control levees and dikes  Pollution and Eutrophication  Wetland destruction