Aquatic Ecology: Biodiversity in Aquatic Systems

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Aquatic Ecology Biodiversity in Aquatic Systems
G. Tyler Millers Living in the Environment 13th
Edition Chapter 7
Dr. Richard Clements Chattanooga State Technical
Community College
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Key Concepts

• Factors that influence aquatic systems

• Saltwater life zones

• Freshwater life zones

• Human activities that affect aquatic systems

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Aquatic Environments Types, Components, and
Limiting Factors

• Marine systems

• Freshwater systems

• Plankton

• Nekton

• Benthos

• Euphotic zone

• Dissolved oxygen

Fig. 7-2 p. 145
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Saltwater Life Zones

• Coastal zone

• Estuaries

• Coastal wetlands

• Mangroves

• Intertidal zones

• Barrier islands

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Ocean Zones
Fig. 7-7 p. 148
Refer to Figs. 7-11 7-12 p. 151 152
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Coral Reefs
Fig. 7-16 p. 154
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Freshwater Life Zones

• Standing water

• Flowing water

Fig. 7-20 p. 158
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Types of Lakes Oligotrophic
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Types of Lakes Eutrophic
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Seasonal Changes in Lakes

• Epilimnion

• Thermocline

• Hypolimnion

• Fall overturn

• Springoverturn

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River Systems

• Runoff

• Drainage basin

• Watershed

• Floodplain

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Inland Wetlands
Fig. 7-25 p. 162
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Sustainability of Aquatic Life Zones

• Coral reef destruction

• Loss of biodiversity

• Pollution

• Sedimentation

• Renewability

• Natural purification