BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
12th Edition
ISBN: 9781264058167
Author: Raven
Publisher: MCG CUSTOM
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 58, Problem 5S
Summary Introduction
To discuss:
The small population size causes extinction or some other factors lead to the extinction of small population.
Introduction:
The term extinction in biology refers to the death of the last individual of the species. After extinction, the species gets terminated forever. The
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The Earth is currently experiencing the sixth mass extinction event. Conservation efforts attempt to identify and focus on the
species most at risk of going extinct.
Which characteristics make species more vulnerable to extinction?
species that have a generalized diet
species that have a small population size
species that are not negatively affected by introduced species
species that are used by humans for food and clothing
species that have a long life span
The number of extinctions of birds and mammals has gone up as human populations have increased.
True or False ?
You are watching a documentary on television about grizzly bears in North America. The narrator is speaking over a clip of two cubs and their mother walking along a riverbank in a heavily wooded forest. She says that grizzly bear populations are rising for the first time in several decades even though deforestation is still a growing problem in North America.
Which of the following could be a possible factor for the increase in the grizzly population?
Loss of habitat
Reduction of resources
Increased industrialization
Higher birth rate over death rate
Chapter 58 Solutions
BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
Ch. 58.1 - Describe the history of extinction through time.Ch. 58.1 - Prob. 2LOCh. 58.2 - Prob. 1LOCh. 58.2 - Prob. 2LOCh. 58.3 - Prob. 1LOCh. 58.3 - Explain how these causes can interact to bring...Ch. 58.4 - Prob. 1LOCh. 58.4 - Describe the potential roles of natural selection...Ch. 58.4 - Prob. 3LOCh. 58.5 - Prob. 1LO
Ch. 58.5 - Prob. 2LOCh. 58.5 - Prob. 3LOCh. 58 - If we assume that population density is a good...Ch. 58 - Prob. 2DACh. 58 - Would the extinction rate increase if an area were...Ch. 58 - Prob. 4DACh. 58 - Why do population density and growth rates differ...Ch. 58 - Why might whale populations fail to recover once...Ch. 58 - Why do small populations lose genetic variation?Ch. 58 - Prob. 1UCh. 58 - The economic value of indirect ecosystem services...Ch. 58 - The amphibian decline is best described as a....Ch. 58 - Prob. 4UCh. 58 - When populations are drastically reduced in size,...Ch. 58 - A captive-breeding program followed by release to...Ch. 58 - Historically, island species have tended to become...Ch. 58 - Ninety-nine percent of all the species that ever...Ch. 58 - To effectively address the biodiversity crisis,...Ch. 58 - The introduction of a nonnative predator to an...Ch. 58 - If 99% of the species that ever existed are now...Ch. 58 - Prob. 2SCh. 58 - Prob. 3SCh. 58 - Prob. 4SCh. 58 - Prob. 5S
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Low population size is probably the single best predictor of extinction risk. Why are small populations generally at much greater risk of extinction than larger populations?arrow_forwardHow does extirpation differ from extinction? Group of answer choices Extinction and extirpation are the same thing. Extirpation is the loss of a single population, while extinction is the loss of an entire species. Extinction only happens during a mass extinction. Extinction is the loss of a single population, while extirpation is the loss of an entire species.arrow_forwardEastern loggerhead shrike is a critically endangered species of bird in Canada. Its population has been declining since the 1960s, and it has been speculated that habitat loss, pesticide usage combined, and climate change have affected the shrike population size. In 2004, there were approximately 70 loggerhead shrikes breeding in Canada. Over the next five years, 111 new shrikes were born, 57 died, and 15 left the area. Calculate the change in the population of eastern loggerhead shrike between 2004 and 2009. Express your answer rounded to the nearest whole number. Answerarrow_forward
- If the human species were to suffer a population crash, list three species that might move in to occupy part of our ecological niche. List and explain three species that would likely decline as a result.arrow_forwardWe (humans) do not have any ethical burden to worry about other species because extinction is a natural process. True or False?arrow_forwardWhich of the following species is most likely to become extinct? Group of answer choices a species that is losing its habitat due to deforestation a species that has a great amount genetic variation a species that has a decreasing number of predators a species that is well adapted to its environmentarrow_forward
- What is an example of how migration causes changes in gene frequencies? Genetic material can become lost over time due to lack of reproduction when animals migrate. When animals migrate, their genes mutate on their own, changing the frequency that a gene allele shows up. When animals migrate, the mating becomes less random, causing inbreeding and, therefore, shifts in the proportion of alleles. Seeds of plants are carried to different locations and introduced to a new population, adding their own genetic material and, therefore, changing gene frequencies.arrow_forwardThe example of the Heath Hen provides which of the following important lesson for managing small populations - Genetic drift is more powerful in small populations and can lead a species to extinction - Understanding the factors that make a population small are more important than the factors that ultimately drive it to extinction - Intensive management is successful for bringing back species from the brink of extinction - Allee effects can make managing a small population very difficultarrow_forwardDescribe the mechanisms by which human population growth and resource use causes increased extinction rates.arrow_forward
- Below is a table that shows the changes in a population of domesticated rabbits. What is the most likely explanation for why size of the rabbit population remained relatively constant from 1990-1992? Year 1986 1987 1988 1989 1990 1991 1992 Population 601 732 769 800 816 815 816 O a. The population suffered from a new disease O b. A new predator was introduced c. The rabbit's prey source was killed off due to hunting o d. The population reached its carrying capacityarrow_forwardAs we saw last week, population size is important. Ideally, this means you started with a lot of genetically diverse founders, but of course that isn’t always the case. In the case of the Española Galapagos tortoises it was 12 females and 2 males. So, often you have to grow your population to stabilize it and ensure there isn’t an unacceptable loss of genetic diversity over time, even if that genetic diversity is low. If you think back to the math from last week and do a little not so fancy algebra, you can see that genetic deterioration occurs at a rate that is the inverse of genetic retention, which you probably remember is 1- (1/2Ne) Assume that the Española Galapagos tortoise captive population started with an Ne/N ratio of 0.7. Calculate their rate of loss of genetic diversity given their original population size of 14 tortoises (N=14). You will first need to solve for Ne, then plug Ne into the rate of loss of genetic diversity formula. Now let’s work on growing the population.…arrow_forwardTigers are solitary animals that require vast amounts of forest landscape as their territory to roam. In order to protect one tiger, we must conserve around 25,000 acres of forest. With poaching and deforestation threatening their survival, what are possible solutions to bring tiger populations back from the brink of extinction?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning