Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 56, Problem 11TYK
Summary Introduction
Introduction: Conservation biology is defined as the science that deals with the protection and management of biological diversity. It has three main goals, to describe and investigate the biological diversity of the world, to evaluate the impacts of humans on the biological diversity, and to develop possible approaches to prevent the species extinction.
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Keystone species:
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a
Are particularly important for the survival of other species in the community
b
Include wood storks
c
Include racoons
d
All of the above
e
A and C
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.
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?
Chapter 56 Solutions
Study Guide for Campbell Biology
Ch. 56 - Prob. 1IQCh. 56 - Is the effective population size larger or smaller...Ch. 56 - Prob. 3IQCh. 56 - Prob. 4IQCh. 56 - What are some potential benefits of corridors? How...Ch. 56 - What factors would favor the creation of larger,...Ch. 56 - List some of the ways by which we may slow global...Ch. 56 - Describe the four major threats to biodiversity.Ch. 56 - Prob. 2SYKCh. 56 - Prob. 3SYK
Ch. 56 - Prob. 1TYKCh. 56 - Ecosystem services include all of the following,...Ch. 56 - The most serious threat to biodiversity is a....Ch. 56 - Prob. 4TYKCh. 56 - Prob. 5TYKCh. 56 - Prob. 6TYKCh. 56 - The smallest population that can sustain its...Ch. 56 - Movement corridors are a. strips or clumps of...Ch. 56 - Prob. 9TYKCh. 56 - Prob. 10TYKCh. 56 - Prob. 11TYKCh. 56 - Prob. 12TYKCh. 56 - Thinning of the ozone layer is a result of CFCs...Ch. 56 - Sustainable development a. uses nature reserves to...Ch. 56 - Which of the following statements reflects a...
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- 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_forwardWhich of the following is one of the biggest threats to biodiversity? A. Invasive species B. Land protection C. Ecological conservation D. Habitat restorationarrow_forwardThe Burmese Python, an invasive species, has been introduced to the Florida Everglades, largely through release by owners who acquired the snakes from exotic pet traders. Though the Everglades are protected, pythons as predators can not be easily controlled. What can be concluded about the effect of the python population on the biodiversity of the Everglades? A. Since the Everglades are protected, python control is limited under laws that protect species in the Everglades. B. Since the python population is growing, it will eventually become a native species and will increase biodiversity. C. Since pythons prey on many species in the Everglades, resources will be more available for surviving species and fewer will be considered endangered. D. Since pythons have no predators, they are responsible for decreasing mammal population and are a greater threat to biodiversity.arrow_forward
- 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.arrow_forwardConservation hotspots are best described as a. areas with large numbers of endemic species, in many of which species are disappearing rapidly. b. areas where people are particularly active supporters of biological diversity. c. islands that are experiencing high rates of extinction. d. areas where native species are being replaced with introduced species.arrow_forwardWhich of the following could qualify as a bottom-up control on a grassland community? (A) limitation of plant biomass by rainfall amount, (B) effect of grazing intensity by bison on plant species diversity, (C) the effects of predation by wolves on herbivore density, (D) herbivory by moth larvae reducing abundances of certain plant species, (E) agricultural practices by humans eliminating all but one species of grass.arrow_forward
- Which of the following best describes a keystone species? a. An organism, whose introduction causes or is likely to cause environmental harm b. An organism, who if removed, the entire ecosystem changes. c. Can signal a change in the biological condition of a particular ecosystem and diagnose the health of that ecosystem d. Can indirectly protect several other species in the same habitatarrow_forwardIf 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_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
- When an invasive species alters the community structure it is introduced to, what can the consequence be? a. extinction of economically important species b. reduced predation on some native species c. increased predation on some native species d. all of the abovearrow_forwardThe presence of one species (A) in a community may benefit another species (B) if a. a commensalistic relationship exists between the two. b. The first species (A) preys on a predator of the second species (B). c. The first species (A) preys on a species that competes with a species that is eaten by the second species (B). d. All of the choices are correct.arrow_forward_____ is a term describing species that are in danger of becoming endangered. a. extinct b. extirpated c. endangered d. threatenedarrow_forward
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