Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Chapter 45, Problem 38CTQ
Since the introduction of the Endangered Species Act the number of species on the protected list has more than doubled. Describe how the human population’s growth pattern contributes to the rise in endangered species.
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List two ways exotic species are introduced to a new habitat and list two consequences of it becoming an invasive species that takes over a habitat.
Which of the following is not a part of the red list criteria for "critically endangered" species?
The population is expected to decline by 25% or more within 3 years or 1 generation.
The species has a restricted range <100km2 at a single location and there is observed or predictive habitat loss, fragmentation, ecological imbalance or heavy commercial pollution.
Extinction probably is greater than 50% within 10 years or 3 generations.
The total population size is less than 200 mature individuals.
Describe the potential effects when a keystone species is removed from a community.
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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- The per capita growth rate of a population where dispersal is not a factor is expressed as (a) i + e (b) b d (c) dN/dt (d) rN(K N) (e) (K N) Karrow_forwardWhen 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 first species to live on new land, such as that formed from volcanic lava, are called_________. a. climax community b. keystone species c. foundation species d. pioneer speciesarrow_forward
- Describe what happens to an ecosystem when a keystone species is removed.arrow_forwardThe Canary Islands are a volcanic island chain off the western coast of Africa with a larger percentage of specialist species than generalist species. If an invasive species is introduced to one of the Canary Islands, which of the following represents an immediate impact? (NOTE: a specialist species has a narrow ecological tolerance, while a generalist has a wide ecological tolerance) The populations of the invasive species on the Canary Islands will decrease as predation increases. The population of the invasive species on the Canary Islands will decrease because they were outcompeted by native specialist species. The populations of both the invasive species and the specialist species on the Canary Islands will remain the same as a result of resource partitioning. The populations of the specialist species on the Canary Islands will decrease as competition for resources increases.arrow_forwardWhich of the subsequent options is not included in the red list criteria for species classified as "critically endangered"? 1. The population is projected to decrease by 25% or more within a span of 3 years or 1 generation. 2. The species possesses a limited range of less than 100km2 in a solitary location, and there is evidence of or anticipated habitat loss, fragmentation, ecological imbalance, or significant commercial pollution. 3. The likelihood of extinction exceeds 50% within a timeframe of 10 years or 3 generations. 4. The overall population size consists of fewer than 200 mature individuals.arrow_forward
- When a large, contiguous area of habitat is reduced in area and divided into smaller, more scattered patches, the process is called habitat elimination habitat exploitation resource partitioning habitat fragmentation resource lossarrow_forwardMatch the following solutions to examples that address problems for biodiversity. Ais-Richtersveld Transfrontier Park The Global wildlife program Haida Gwaii Watchmen Salmon recovery in Terra Nova National Park 1. Land managers have a responsibility to listen to local people's perspectives. 2. Conservation actions are difficult to coordinate between countries. 3. International organizations provide technical and financial support to developing countries. 4. Train and hire local people to work in protected areas.arrow_forwardExotic or non-indigenous species are species that have been transported to new locations by humans, either intentionally (e.g., the ornamental trade, fisheries or aquaculture) or unintentionally (e.g., accidental release of aquarium or pet species), and have established one or more populations in their new location. Exotic species may become invasive species if they expand their range in their novel region and become abundant. The presence of invasive species is of concern because invasive species can have negative effects on the affected ecosystems or commercial interest. Research an invasive species and include the following: Scientific name and common name (if the species has one) The species native region and invaded region Consequences or concerns that the species presents. Potential solutions Include referencesarrow_forward
- In the TED Talk presented in this module, Why Bees are Disappearing, Marla Spivak outlines the plight of bees. The acronym HIPPO, coined by E. O. Wilson, identifies the primary causes of biodiversity loss in order of descending importance: • Habitat Loss • Invasive Species • Pollution • Population of Humans Overharvesting Resourcesarrow_forwardMatch the challenges of protected area management to some of the potential solutions. Increase funding for protected area management Fences and compensation programs Multiple-use areas with oversight and regulating policies Preserve elevational and environmental gradients, corridors, and climatic refugia Remove animal products from circulation, educate the public about the pros and cons to conservation Address poverty and enforce regulations 1. Poaching 2. Trophy hunting 3. Human-wildlife conflict 4. Degradation 5. Climate change 6. Lack of resources and personnelarrow_forwardExplain the following values of biodiversity using coral reefs as an example: direct use, indirect use, option and amenity.arrow_forward
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