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Chapter 11

Chapter 11

2 Pages
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Department
Environmental Science
Course Code
EESA01H3
Professor
Carl Mitchell

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Chapter 11: Freshwater Systems and Water Resources
Freshwater Systems
Rivers and streams wind through landscapes
A smaller river flowing into a larger one is a tributary the area of land drained
by a river drainage basin or watershed
Riparian meaning riverside
Wetlands include marshes (shallow water allows plants to grow above waters
surface), swamps (consist of shallow water but they occur in forested areas) and
bogs (ponds thoroughly covered with thick floating mats of vegetation
Lakes and ponds littoral: shallow water, rich in nurtrients and productive
plant growth making it rich in aquatic life and organisms; limnetic: open portion
of lake or pond away from shore which is penetrated by sunlight meaning
organisms or plants that perform photosynthesis are found here; Profundal:
below the limnetic zone, ans is the volume of open water that sunlight does not
reach meaning it lacks plant life and as lower dissolved oxygen that can support
animals benthic: extends along bottom of entire body of water from shore to
deepest point
Oligotrophic (low-nutrient, high oxygen) eutrophic (opposite therefore it is high
nutrient and low oxygen)
How We Use Water
Diversions, Channelization
Dikes long raised mounds of Earth protect against flooding
Water mining taking water faster than it can be replenished
Freshwater Pollution and Its Control
Water pollution takes many forms
Nutrient pollution
Pathogens and waterborne diseases
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Description
Chapter 11: Freshwater Systems and Water Resources Freshwater Systems Rivers and streams wind through landscapes A smaller river flowing into a larger one is a tributary the area of land drained by a river drainage basin or watershed Riparian meaning riverside Wetlands include marshes (shallow water allows plants to grow above waters surface), swamps (consist of shallow water but they occur in forested areas) and bogs (ponds thoroughly covered with thick floating mats of vegetation Lakes and ponds littoral: shallow water, rich in nurtrients and productive plant growth making it rich in aquatic life and organisms; limnetic: open portion of lake or pond away from shore which is penetrated by sunlight meaning organisms or plants that perform
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