BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 58, Problem 1U
Summary Introduction
Introduction:
Biodiversity hotspot is a biogeographic area where the species number is getting low. The conservation of these hotspots is necessary to save these species from extinction. There are about 25 hotspot area around where about
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Which of the following is not true of a population of largepredators in a small reserve?a. The species may disappear from the reserve.b. The species will probably undergo a populationexplosion.c. The species will probably lose genetic diversity.d. The species may overeat its prey, causing a reduction inprey population.
Why do moderate levels of disturbance result in an increase in community diversity?a) The resulting uniform habitat supports stability, which in turn supports diversity.b) Less-competitive species evolve strategies to compete with dominant species.c) Habitats are opened up for less competitive speciesd) Competively dominant species infrequently exclude less competitive species after a moderate disturbance.
Keystone species:
Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer.
a
Are particularly important for the survival of other species in the community
b
Include wood storks
c
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d
All of the above
e
A and C
Chapter 58 Solutions
BIOLOGY
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
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- In many cases, circumstances prevent preservation of a large, unbroken area of a threatened species’ habitat. Sometimes, however, several smaller areas can be protected. In such cases, conservation biologists stress that the small areas must be linked by corridors of the appropriate habitat. Can you explain why?arrow_forwardWhat are the implications of the "bottleneck effect" for wildlife managers who try to help endangered species, such as the whooping crane, recover from near extinction?arrow_forwardSupport for the individualistic model of community structure includes (a) the decline of honeybees because of two species of parasitic mites (b) the identification of fig trees as a keystone species in tropical forests (c) the competitive exclusion of one Paramecium species by another (d) the distribution of trees along a moisture gradient in Wisconsin forests (e) theeffects of the removal of a dominant rodent species from an Arizona desertarrow_forward
- What kind of conservation strategies have been or should be implemented to the Hawaiian islands in order to avoid native bird populations declining or going extinct due to avian malaria?arrow_forwardThere may be similarities between different species due to a common ancestor. Davao is known for its wide variety of fruits and other plant species that makes it more attractive to tourists, which of the following classification of the value of biodiversity is described? * A. Direct economic value B. Indirect economic value C. Aesthetic value D. both A and Carrow_forwardWhich of the following is one of the biggest threats to biodiversity? A. Invasive species B. Land protection C. Ecological conservation D. Habitat restorationarrow_forward
- If you are one of the environmentalists and was assigned in one of the forests in the Philippines which happened to be the location of some endangered species, what are the plans that you would organize to ensure the conservation of the species of the flora and fauna present in your assigned area?arrow_forwardWhich of the following statements about keystone species is false? a) Keystone species are the most common (abundant) species in their ecosystem. b) The reintroduction of wolves into Yellowstone Park increased biodiversity. c) Removal of a keystone species can drastically change an ecosystem. d) Keystone species have a much greater effect on the functioning of their ecosystems than other species.arrow_forwardThe impacts on fire regimes in the US is strongly correlated with the change in priority given to cultural, regulating, provisioning and supporting ecosystem services. A. How did those priorities change? explain using examples B. What did that change in priority do to fire regimes present and future? C. will the changes in fire regimes benefit fire dependent or fire tolerant species? explain your reasoning, use examples)arrow_forward
- An ecologist studying several forest-dwelling, insect-eating bird species does not find any evidence of interspecific competition. The most likely explanation is (a) lack of a keystone species (b) low species richness (c) pronounced intraspecific competition (d) coevolution of predatorprey strategies (e) resource partitioningarrow_forwardSome people declare that we shouldn’t worry about endangered species because extinction has always occurred. How would you respond to this view?arrow_forwardThe conservation goals of the ESA focus on which of the following principles: Group of answer choices A. Provide conservation incentives B. Base decisions on sound science C. Focus on recovery D. Increase public participation through grants and partnerships E. Provide private landowners and industry with tools to implement projects F. All of the answers are correct G. Ensure clear and consistent policies and implementationarrow_forward
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