SSM 3301 Final Exam Study Guide 2024 with complete
solution
nutrients
Phosphorus, nitrogen and other constituents that promote plant and algal growth that
if excessive can lead to lake degradation.
temperature
This water quality factor is critical for many fish and other types of aquatic life.
Warming may reduce or inhibit some fish from reproducing or thriving in a lake.
habitat
The water or shoreline conditions need to be suitable for fish and aquatic life to live.
If lake shores are developed it may eliminate the native vegetation and reduce the
quality of this factor.
Peter Sorensen mentions that walleye, a popular game-fish, are threatened
with displacement from Wisconsin lakes because of what factor?
warmer temperatures
According to Dr. Blann's talk on the Earth's Great Lakes, freshwater forms of
life are more threatened than terrestrial forms of life.
True
Over 2000 species in the African Great Lakes region are considered endemic,
which means what?
They are only found in that region
The world's Great Lakes in Africa, North America and Lake Baikal contain how
much (as a %) of the world's freshwater when added altogether?
72
The invasive "Crown of Thorns" that damages coral reefs is what type of
organism?
starfish
Islands are more resistant than mainland areas to invasion by introduced,
exotic species.
False
The Asian carp which has invaded the Mississippi River and tributaries like the
Illinois River is threat to aquatic ecosystems for a number of reasons.
-They uproot native aquatic plants
-The outcompete native fish
According to aquatic invasive species guide called "Invaders of the Great
Lakes", what is the most common ways aquatic invasive species are spread or
introduced to new lakes and rivers?
by ship ballast water
What is one of the main ecological problems caused by cattail invasion in the
article "Cattail catastrophe"?
reduced native biodiversity
Invasive aquatic plants have negative ecological impacts but don't have any
practical negative impacts on recreation or fishing.
False
According to the Pimental article, Update on the environmental and economic
costs associated with alien-invasive species in the United States, about how
many types of invasive species have been introduced to the U.S.?
, 50,000
The introduction of the sea lamprey into the region caused what negative
impact?
damage to Great Lakes fisheries
Common reasons that exotic species become invasive when introduced to
new environments?
-Introduced species may be more aggressive or competitive in their new
environment
-Introduced species may reproduce more rapidly than native species
-Introduced species are not kept in check by the predators from their original, native
environment
Aquatic invasive species are often considered "ecosystem engineers" which
means that they may change the structure or function of an ecosystem to their
own benefit which is often detrimental to native aquatic life.
True
Each year, according to the Ecology Project International video, invasive
species cause how much damage to agriculture, industry, recreation and other
economic values in the United States (in dollars)?
$150 billion
What is an invasive species according to Dan Larkin?
Organism that is not native to an ecosystem and causes or has high potential to
cause harm
Potential Impacts of Aquatic Invasive Species
-prey upon native species
-outcompete native species for space or resources
-cause or carry disease
-engineer invaded habits, altering: environmental conditions, ecosystem processes,
food web interactions
-interfere w/ lake use
Dominant means of spread of aquatic invasive species
-human activity: transcontinental shipping, disposal/release of plants and animals
from aquaria or water gardens, boater movement, contaminated equipment
The Ogallala Aquifer is a large groundwater supply that is being greatly drawn
down in the Great Plains region of the U.S. What is the main cause of aquifer
depletion?
irrigation for agriculture
What are the negative impacts of dams downstream?
-accumulates sediment behind the dam
-changes the timing of flow patterns that can impact stream life
-blocks fish passage
Stream flow supports a variety of functions in rivers, a concept shown
graphically on the Environmental Flows slide. Which are functions provided at
higher flow levels?
-fish habitat support
-sediment movement or transport
-flood storage
Some strategies are mentioned for improving water quality in urban areas by
installing management practices that reduce water velocity, filter runoff and
improve infiltration. Which of the following urban management practices were
described in the lecture?
solution
nutrients
Phosphorus, nitrogen and other constituents that promote plant and algal growth that
if excessive can lead to lake degradation.
temperature
This water quality factor is critical for many fish and other types of aquatic life.
Warming may reduce or inhibit some fish from reproducing or thriving in a lake.
habitat
The water or shoreline conditions need to be suitable for fish and aquatic life to live.
If lake shores are developed it may eliminate the native vegetation and reduce the
quality of this factor.
Peter Sorensen mentions that walleye, a popular game-fish, are threatened
with displacement from Wisconsin lakes because of what factor?
warmer temperatures
According to Dr. Blann's talk on the Earth's Great Lakes, freshwater forms of
life are more threatened than terrestrial forms of life.
True
Over 2000 species in the African Great Lakes region are considered endemic,
which means what?
They are only found in that region
The world's Great Lakes in Africa, North America and Lake Baikal contain how
much (as a %) of the world's freshwater when added altogether?
72
The invasive "Crown of Thorns" that damages coral reefs is what type of
organism?
starfish
Islands are more resistant than mainland areas to invasion by introduced,
exotic species.
False
The Asian carp which has invaded the Mississippi River and tributaries like the
Illinois River is threat to aquatic ecosystems for a number of reasons.
-They uproot native aquatic plants
-The outcompete native fish
According to aquatic invasive species guide called "Invaders of the Great
Lakes", what is the most common ways aquatic invasive species are spread or
introduced to new lakes and rivers?
by ship ballast water
What is one of the main ecological problems caused by cattail invasion in the
article "Cattail catastrophe"?
reduced native biodiversity
Invasive aquatic plants have negative ecological impacts but don't have any
practical negative impacts on recreation or fishing.
False
According to the Pimental article, Update on the environmental and economic
costs associated with alien-invasive species in the United States, about how
many types of invasive species have been introduced to the U.S.?
, 50,000
The introduction of the sea lamprey into the region caused what negative
impact?
damage to Great Lakes fisheries
Common reasons that exotic species become invasive when introduced to
new environments?
-Introduced species may be more aggressive or competitive in their new
environment
-Introduced species may reproduce more rapidly than native species
-Introduced species are not kept in check by the predators from their original, native
environment
Aquatic invasive species are often considered "ecosystem engineers" which
means that they may change the structure or function of an ecosystem to their
own benefit which is often detrimental to native aquatic life.
True
Each year, according to the Ecology Project International video, invasive
species cause how much damage to agriculture, industry, recreation and other
economic values in the United States (in dollars)?
$150 billion
What is an invasive species according to Dan Larkin?
Organism that is not native to an ecosystem and causes or has high potential to
cause harm
Potential Impacts of Aquatic Invasive Species
-prey upon native species
-outcompete native species for space or resources
-cause or carry disease
-engineer invaded habits, altering: environmental conditions, ecosystem processes,
food web interactions
-interfere w/ lake use
Dominant means of spread of aquatic invasive species
-human activity: transcontinental shipping, disposal/release of plants and animals
from aquaria or water gardens, boater movement, contaminated equipment
The Ogallala Aquifer is a large groundwater supply that is being greatly drawn
down in the Great Plains region of the U.S. What is the main cause of aquifer
depletion?
irrigation for agriculture
What are the negative impacts of dams downstream?
-accumulates sediment behind the dam
-changes the timing of flow patterns that can impact stream life
-blocks fish passage
Stream flow supports a variety of functions in rivers, a concept shown
graphically on the Environmental Flows slide. Which are functions provided at
higher flow levels?
-fish habitat support
-sediment movement or transport
-flood storage
Some strategies are mentioned for improving water quality in urban areas by
installing management practices that reduce water velocity, filter runoff and
improve infiltration. Which of the following urban management practices were
described in the lecture?
