Aquatic Biodiversity

Objectives

1. Summarize the distribution of light, salt, and temperature in different aquatic life zones.

2. Evaluate the significance of the ecological contributions of the oceans.

3. Briefly describe the characteristics and ecological significance of coral reefs. Describe environmental and economic problems of coral reefs.

4. Distinguish between coastal and inland wetlands. Describe the ecological functions performed by wetlands. Describe environmental problems associated with coastal and inland wetlands.

5. List and compare the four zones of a lake. Distinguish between oligotrophic and eutrophic lakes. Describe stratification and a turnover in a lake.

6. Define watershed. List and distinguish the three zones of a river system.

Key Terms (Terms are listed in the same font style as they appear in the text.)

barrier islands (p. 133)

benthos (p. 128)

coastal wetland (p. 129)

coastal zone (p. 129)

coral reefs (p. 133)

cultural eutrophication (p. 138)

decomposers (p. 128)

estuary (p. 129)

euphotic zone (p. 128)

eutrophic lake (p. 138)

freshwater life zones (p. 136)

inland wetlands (p. 140)

intertidal zone (p. 131)

lakes (p. 136)

mangrove swamps (p. 129)

mesotrophic lake (p. 138)

nekton (p. 128)

oligotrophic lake (p. 138)

open sea (p. 135)

phytoplankton (p. 128)

plankton (p. 128)

runoff (p. 138)

surface water (p. 138)

ultraplankton (p. 128)

watershed (p. 138)

zooplankton (p. 128)