Aquatic Biodiversity

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Aquatic Biodiversity
G. Tyler Millers Living in the Environment 14th
Edition Chapter 7
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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. 128
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Saltwater Life Zones

• Coastal zone

• Estuaries

• Coastal wetlands

• Mangroves

• Intertidal zones

• Barrier islands

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Ocean Zones
Fig. 7-6 p. 131
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Coral Reefs
Fig. 7-12 p. 136
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Freshwater Life Zones

• Standing water

• Flowing water

Fig. 7-16 p. 139
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Types of Lakes Oligotrophic
Fig. 7-17a, p. 139
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Types of Lakes Eutrophic
Fig. 7-17b, p. 139
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Life Zones in Lakes

• Littoral zone
• Limnetic zone
• Profundal zone
• Benthic zone

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Stream Systems

• Runoff

• Drainage basin

• Watershed

• Floodplain

Fig. 7-18 p. 140
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Wetlands

• Importance of Wetlands
• Types
• Marshes
• Swamps
• Prairie Potholes
• Floodplain
• Tundra
• Seasonal

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Human Impacts on Wetlands and Streams

• Dams, diversions and canals
• Flood control levees and dikes
• Pollution and Eutrophication
• Wetland destruction