Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 45, Problem 18RQ
Which of the following events would not negatively impact Yellowstone’s grey wolf
- snow in winter
- a beaver damming a river upstream
- a forest fire
- chronic wasting disease in the deer population
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Chapter 45 Solutions
Biology 2e
Ch. 45 - Figure 45.2 As this graph shows, population...Ch. 45 - Figure 45.10b If the major food source of the...Ch. 45 - Figure 45.16 Age structure diagrams for rapidly...Ch. 45 - Which of the following methods will tell an...Ch. 45 - Which of the following is best at showing the life...Ch. 45 - Humans have which type of survivorship curve? Type...Ch. 45 - How is a clumped population distribution...Ch. 45 - Which of the following is associated with...Ch. 45 - Which of the following is associated with multiple...Ch. 45 - Which of the following is associated with the...
Ch. 45 - Species with limited resources usually exhibit...Ch. 45 - The maximum rate of increased characteristic of a...Ch. 45 - The population size of a species capable of being...Ch. 45 - Species that have many offspring at one time are...Ch. 45 - A forest fire is an example of regulation....Ch. 45 - Primates are examples of: density-dependent...Ch. 45 - Which of the following statements does not support...Ch. 45 - Which of the following events would not negatively...Ch. 45 - A country with zero population growth is likely to...Ch. 45 - Which type of country has the greatest proportion...Ch. 45 - Which of the following is not a way that humans...Ch. 45 - The first species to live on new land, such as...Ch. 45 - Which type of mimicry involves multiple species...Ch. 45 - A symbiotic relationship where both of the...Ch. 45 - Which of the following is not a mutualistic...Ch. 45 - The ability of rats to learn how to run a maze is...Ch. 45 - The training of animals usually involves...Ch. 45 - The sacrifice of the life of an individual so that...Ch. 45 - Why are polyandrous mating systems more rare than...Ch. 45 - Describe how a researcher would determine the size...Ch. 45 - The CDC released the following data in its 2013...Ch. 45 - Why is long-term parental care not associated with...Ch. 45 - Describe the difference in evolutionary pressures...Ch. 45 - Describe the rate of population growth that would...Ch. 45 - Describe how the population of a species that...Ch. 45 - Give an example of how density-dependent and...Ch. 45 - Describe the age structures in rapidly growing...Ch. 45 - Since the introduction of the Endangered Species...Ch. 45 - Describe the competitive exclusion principle and...Ch. 45 - Jaguars are a keystone species in the Amazon....Ch. 45 - Describe Pavlov’s dog experiments as an example of...Ch. 45 - Describe the advantage of using an aural or...
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- Figure 19.6 If the major food source of seals declines due to pollution or overfishing, which of the following would likely occur? a. The carrying capacity of seals would decrease, as would the seal population. b. The carrying capacity of seals would decrease, but the seal population would remain the same. c. The number of seal deaths would increase, but the number of births would also increase, so the population size would remain the same. d. The carrying capacity of seals would remain the same, but the population of seals would decrease.arrow_forwardEstimate the carrying capacity. Deer Population on Wallawalla Island 100 80 Number of deer 40 20 Time 40 deer 80 deer 100 deer 60 deerarrow_forwardThe growth of fish populations is the greatest at population sizes, medium small large very large none of these answersarrow_forward
- Individuals of two, distinct species of squirrels live on the same college campus. They have been observed foraging on similar food sources throughout the year. What is the relationship between these two species of squirrel an example of? Predation Herbivory Competition Commensalismarrow_forwardExample: Lynx and Hare: 1. What occurs to the Lynx population when the number of snow hares increase? KEY Snowshoe hare Lynx 160 2. Why does the number of lynx decreases in year 1925? 120 80 40 3. Between what two years is the hare population at its greatest? 1850 1875 1900 1925 Year Carry Capacity: Thousands of lynxarrow_forwardWhat happens to the Moose population when the amount of Wolves increase?arrow_forward
- The ten-year cycles of the populations of the snowshoe hare and Canada lynx were first recorded from fur returns of Hudson's Bay Company traders in the late 1800s. The cycles revolve around the lynx's preference for hares over other animals as a food source. This predator-prey relationship is again being studied by the Northwest Territories Department of Renewable Resources, in an area known as the Mackenzie Bison Sanctuary. 1991 1992 N = 19 100 kam 100 km N = 3 100 km 100 km Legend:a=I Lynx 1a. Calculate the density of the lynx population in 1991 and 1992. Show your work. 1b. Calculate the per capita growth rate for the lynx population from 1991 to 1992. Show your work.arrow_forwardThe ten-year cycles of the populations of the snowshoe hare and Canada lynx were first recorded from fur returns of Hudson's Bay Company traders in the late 1800s. The cycles revolve around the lynx's preference for hares over other animals as a food source. This predator-prey relationship is again being studied by the Northwest Territories Department of Renewable Resources, in an area known as the Mackenzie Bison Sanctuary. 1991 1992 N = 19 100 100 km N = 3 100 km 100 km Legend:a=I Lynx 1f. The birth rate in the lynx population can be estimated by determining litter sizes. Litter size can be determined by two methods. The first method involves counting the number of placental scars on the uterus of a lynx carcass. A scar is left at each implantation site of a fetus. The second method involves counting the number of degenerated corpora lutea (plural of corpus luteum) in the ovaries of the lynx carcass. Neither of these methods provides a completely accurate value for litter size.…arrow_forwardThe ten-year cycles of the populations of the snowshoe hare and Canada lynx were first recorded from fur returns of Hudson's Bay Company traders in the late 1800s. The cycles revolve around the lynx's preference for hares over other animals as a food source. This predator-prey relationship is again being studied by the Northwest Territories Department of Renewable Resources, in an area known as the Mackenzie Bison Sanctuary. 1991 1992 N = 19 100 100 km N = 3 100 km 100 km Legend:a=I Lynx 1c. The density of the snowshoe hare in the study area was about 800/km2 in 1990 and about 100/km2 in 1991. Identify one possible cause for the change in the lynx population density during the 1991 to 1992 time period. d. After the decline in the hare population, younger male lynx were found to have migrated as far as 500 km from the study area. Explain how the gene pool of the neighbouring lynx populations would be affected. le. Lynx have lustrous, long hair. Currently lynx fur is out of fashion in…arrow_forward
- As population densities approach the carrying capacity what are two biotic factors that would increase? O predation disease resources natural disastersarrow_forwardThe population of rabbit was observed to rise and fall over a period of 8 to 10 years. The wolf population in the same area followed the same rate of increase and decrease as the rabbit population approximately two years afterward. What is the relationship between the wolf and the rabbit? Mutualism Symbiosis Predator-prey Competitionarrow_forward[itemD3] (refer to the photo below) What would happen to the moose population if the wolves were removed from Isle Royale?arrow_forward
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