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 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

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter57: Biological Diversity And Conservation Biology

Section: Chapter Questions

Problem 15TYU: EVOLUTION LINK Biologists have wondered how introduced species that would probably have limited...

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Which of the below would best be described as a metapopulation? Killer whales are predicted to cause major shifts in the future abundance of prey species such as seals The Hawaiian stilt, an endangered, endemic bird of the Hawaiian Islands, was reduced to 200 individuals by hunting and development California mountain sheep disperse between mountain ranges and occupy previously unpopulated sites. Human-made barriers, such as highways, almost completely eliminate movement among populations Leadbeater's possum, an endangered arboreal marsupial inhabiting a rare type of eucalyptus forest in southeastern Australia, is predicted to decline by more than 90% over the next 20 to 30 years
Approximately 14,000 years ago, the climate in North America began to warm rapidly. At the same time, human hunters migrated to the continent. Which of these most likely resulted from a combination of these two factors? an increase in the rate of large mammal extinctions a reduction in the rate of species change an increase in the amount of interspecies cooperation a reduction in the total number of small parasitic insects
Which of the following species will most likely exhibit metapopulation dynamics? Any K-selected species when an ecosystem is at it carrying capacity and competition is intense A species of dandelion that can grow in a wide variety of soils A species of mussel that has not maximized its fundamental niche A species of lily that can only grow in wetlands that are spread out across the landscape
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.
Figure 45.10b If the major food source of the seals declines due to pollution or overfishing, which of the following would likely occur? The carrying capacity of seals would decrease, as would the seal population. The carrying capacity of seals would decrease, but the seal population would remain the same. The number of seal deaths would increase but the number of births would also increase, so the population size would remain the same. The carrying capacity of seals would remain the same, but the population of seals would decrease.
EVOLUTION LINK Biologists have wondered how introduced species that would probably have limited genetic variation (due to the founder effect) survive and adapt so successfully that they become invasive. Part of the answer may be that invasive species are the result of multiple introductions instead of a single one. Explain how multiple introductions from a species native area to an introduced area could increase that species invasion success.
Which 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 environment
How 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.
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
Threats to Biodiversity Match each description to the type of threat it presents to biodiversity. NOTE: If you want to change your selection, you'll need to delete the one you already chose. After you delete it, the list of choices will pop back up and you can make a different choice Burning fossil fuels and cutting down forests habitat loss Replacing grassland with neighborhoods climate change Accidentally or purposefully moving an organism from one place to exotic species another overharvesting Many people fishing for the same species
Bob Davison describes the Endangered Species Act (ESA) as an effective tool for conserving biological diversity. What is his rationale for the value of focusing on individual species? The public is not concerned about the economic costs of individual species recovery. A focus on individual species is cheaper than protecting entire ecosystems. Establishing public empathy for charismatic species provides an opportunity to educate people about lesser-known species. The public tends to value intact ecosystems over particular plant and animal species.
The 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 difficult