BIOC58H3 Study Guide - Final Guide: Overdrafting, Sloss Debate, Trailing Edge

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Published on 16 Sep 2020
BIOC58H3 The Biological Consequences of Global Change
Final Exam Practice Questions
This is NOT a practice exam, but does contain questions similar in content and format to
those that you will see on the final exam. These practice questions are to help you get a feel
for the type of question you might see, and to give you some practice at answering them.
These questions only focus on the material not covered on the midterm exam. Note that the
final exam is cumulative, so you should revisit that material in your studies. I will post the
answers to the multiple choice and true/false questions online. Note that I will not post the
answers to the other short answer questions, but please feel free consult me during my office
hours or by email if you have questions regarding them. The lecture active learning questions
are intended to be used as practice questions, also.
1. Which of the following statements best describes the end-Denovian mass extinction event?
a. More than 100 marine families disappeared
b. Leading up to this event, land was colonized
c. This was the worst mass extinction event of the five we know about
d. This event wiped out large amphibians
e. A possible cause was an asteroid impact
2. If an ecosystem provides humans with food or water, this is said to be a ____________
a. Provisioning
b. Supporting
c. Regulatory
d. Cultural
e. None of the above
3. Which of the following statements accurately describes the major findings of Chen and
Benton (2012)’s paper on biotic recovery?
a. This mass extinction killed roughly 70% of marine species
b. This paper focused on terrestrial recovery following the K-T event
c. Stable, complex ecosystems did not show up until millions of years after recovery
started to occur
d. This event wiped out all dinosaur lineages but the avian one
e. More than one of the above
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4. Which of the following statements is INCORRECT regarding environmental uncertainty?
a. Disease outbreaks are an example of this
b. This type of stochasticity impacts all members of the focal population
c. Variations in birth rate that impact population size are an example of this
d. A flood that causes a population to decline is an example of this
e. None of the above (A-D are all correct)
5. Which of the following DOES NOT match your understanding of the risks of climate change
to snow-pack dependent systems?
a. Spring advance is predicted to affect ecosystems that experience high levels of
snowfall but is unlikely to impact downstream systems
b. Trailing edge (downslope) populations of Ponderosa pines are experiencing lower
recruitment because of declines in the meltwater available for younger pines
c. One way to help these systems is to restore forests in these areas because this can
slow snow melt in early spring
d. Many ski resorts may find themselves out of business in the future due to
insufficient snow levels
e. Earlier snowmelt can increase the chances of large fires due to forests becoming
drier, especially later in the water year
6. A protected area is set up to conserve a rare bird species that is only found in pristine
grasslands in central North America (a habitat that has largely vanished due to agricultural
and pastoral practices). This bird species is charismatic, and has caught the attention of the
public as a result. Even though individual birds have small territories and the population
tends to show a clumped dispersion pattern, protecting its habitat will also protect other
species that are found within these grasslands because the presence of the bird indicates
that the grassland is good quality and likely contains high native biodiversity. Based on this
information, which of the below statements is INCORRECT?
a. This is an example of a surrogate species approach towards conservation
b. This bird is acting as an indicator species
c. This bird is acting as a flagship species
d. This bird is probably not an umbrella species
e. None of the above (A-D are all correct)
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