Aquatic Ecology Biodiversity in Aquatic Systems G Tyler

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

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

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

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

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

Coral Reefs Fig. 7 -16 p. 154

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

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

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

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

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

Inland Wetlands Fig. 7 -25 p. 162

Sustainability of Aquatic Life Zones Ø Coral reef destruction Ø Loss of biodiversity Ø Pollution Ø Sedimentation Ø Renewability Ø Natural purification