The benthic zone of an aquatic
ecosystem is
An ecologist would find most of
the phytoplankton at which level
in a lake?
Be specific as
possible.
The biome with the shortest
growing season
A shallow lake may not have a
__________ zone.
An ecologist recorded 12 whitetailed deer per square mile. Is
the biologist tracking density or
dispersion?
100 monarchs are captured and
marked in the park. Later 100
more are captured and 20 have
marks. What is the estimated
population of monarchs?
Give an example of a group of
animals that would likely have
uniform dispersion and discuss
why.
A squirrel population has a birth
rate of 0.06 and a death rate of
0.02. What is r?
A squirrel population has a birth
rate of 0.06 and a death rate of
0.02. If the population is 1000,
how many squirrels are added to
the population in one year?
The larger the r value the greater
the ….
In 2005, the US has a population
around 300,000,000. If there are
13 births for every 1,000 people,
how many births occurred in the
US in 2005?
As N approaches K for a
population, what will happen to
the population growth?
T/F As N approaches K, d will
likely increase.
Where would the largest number
of k-selected individual be found?
a.
abandoned field
b.
sand une
c.
climax woodlot
Carrying capacity is
Draw a graph displaying
exponential growth with a HIGH r
value.
Draw a graph displaying
exponential growth with a LOW r
value.
Draw a graph that would display
the likely outcome a deer
introduced to an island with not
predators and lots of producers.
Give an example of three density
dependent population factors.
Give an example of three density
INdependent population factors.
Give an example of a density
independent factor that is
currently limiting population
growth in one area of the world.
The competitive exclusion
principle states…
A species of fish requires a
certain water temperature,
amount of oxygen, plants, rocky
bottom and a variety of nutrients.
The fish also acts as a tertiary
level consumer in its ecosystem.
This describes this fish’s (5
letters)
A plant grows on another plant.
The host plant is not harmed,
while the other benefits. This is
an example of…
Some woodpeckers feed high
within trees, while other feed low.
This is an example of..
a.
competitive exclusion
b.
resource partitioning
c.
keystone species
15 species live in a tidal pool.
When one of the species was
removed, the total number of
species within the pool dropped
to 8. The species removed is an
example of:
a.
herbivore
b.
community facilitator
c.
keystone species
Which of the above is a primary
consumer
The relationship between
legumes and nitrogen fixing
bacteria can be described as…
Monarchs produce toxins that
make them taste nasty to birds.
Viceroy butterflies look exactly
like monarchs, but actually taste
sweet, yet birds avoid them. This
is an example of….
Which of the above is a producer?
Which of the above would be
most affected by biomagnification
(do not count detritovores)
Food chains are sometimes short
because…
A herbivore is really a ___________
consumer.
The role of detritivores is…
To determine net primary
productivity one would
In general, the total biomass in a
terrestrial ecosystem is greatest
at which level?
A secondary consumer receives
what percent of the energy fixed
by primary consumers?
Phosphorus enters ecosystems
by…
Which has a smaller biomass –
snake or frog?
Eutrophication is…
A consequence of biological
magnification is….
Lichen grow on bare rocks and
break them down into minerals.
These early pioneering lichens
are promoting what type of
succession?
Draw a survivorship curve for
most fish.
Explain the top-down hypothesis.
Explain the bottom-up hypothesis. Identify two factors that affect
dissolved oxygen in water.
Why can dissolved oxygen be
used to determine primary
productivity?
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