Living in the Environment Aquatic Biodiversity G. Tyler Miller’s Living in the Environment 14th 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. 7-12 p. 136

Freshwater Life Zones Standing water Flowing water Fig. 7-16 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

Stream Systems Runoff Drainage basin Watershed Floodplain Fig. 7-18 p. 140

Wetlands Types: Importance of Wetlands 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