1. Aquatic Ecology: Biodiversity in Aquatic Systems G. Tyler Miller’s Living in the Environment 13 th Edition Chapter 7 G. Tyler Miller’s Living in the Environment 13 th Edition Chapter 7 Dr. Richard Clements Chattanooga State Technical Community College Dr. Richard Clements Chattanooga State Technical Community College

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

3. Aquatic Environments: Types, Components, and Limiting Factors  Marine systems  Freshwater systems  Plankton  Nekton  Benthos  Euphotic zone  Dissolved oxygen Fig. 7-2 p. 145

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

5. Ocean Zones Fig. 7-7 p. 148 Refer to Figs. 7-11 & 7-12 p. 151 & 152

6. Coral Reefs Fig. 7-16 p. 154

7. Mangroves Depositional saline sediment forest/swamp Fine sediment collected/protected from high energy wave action Tropical/subtropi cal zones Prevent erosion along coastlines Protect estuaries

8. Freshwater Life Zones  Standing water  Flowing water Fig. 7-20 p. 158

9. Types of Lakes: Oligotrophic Fig. 7-21 p. 158

10. Types of Lakes: Eutrophic Fig. 7-21 p. 158

11. Seasonal Changes in Lakes  Epilimnion  Thermocline  Hypolimnion  Fall overturn  Spring overturn Fig. 7-22 p. 159

12. River Systems  Runoff  Watershed  Drainage basin  Floodplain Fig. 7-23 p. 160

13. Inland Wetlands Fig. 7-25 p. 162

14. Sustainability of Aquatic Life Zones  Coral reef destruction  Pollution  Sedimentation  Renewability  Natural purification  Loss of biodiversity