What is the single greatest threat to biodiversity? a. overharvesting of commercially important species b. habitat alteration, fragmentation, and destruction c. introduced species that compete with native species d. novel pathogens
Ch. 56 - Conservation Biology and Global Change
Chapter 56, Problem 6
Which of the following statements about protected areas established to preserve biodiversity is true? (A) About 25% of Earth's land area is now protected. (B) National parks are the only type of protected area. (C) Management of a protected area does not need to be coordinated with management of the surrounding area. (D) It is especially important to protect biodiversity hot spots
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Biodiversity and Protected Areas
Biodiversity refers to the variety of life on Earth, encompassing different species, ecosystems, and genetic diversity. Protected areas are designated regions aimed at conserving this biodiversity by limiting human activities that can lead to habitat destruction and species extinction. These areas can include national parks, wildlife reserves, and marine protected areas, each serving a critical role in maintaining ecological balance.
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Types of Protected Areas
Protected areas come in various forms, including national parks, wildlife sanctuaries, nature reserves, and marine protected areas. While national parks are well-known, they are not the only type of protected area. Each type has specific regulations and management practices tailored to the unique ecological and cultural values they aim to preserve.
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Biodiversity Hotspots
Biodiversity hotspots are regions that are both rich in endemic species and significantly threatened by human activities. Protecting these areas is crucial because they contain a high number of species that are not found anywhere else, making their conservation vital for global biodiversity. Effective management of these hotspots often requires coordinated efforts that extend beyond the protected area to include surrounding landscapes.
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Related Practice
Textbook Question
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Textbook Question
If you applied a fungicide to a cornfield, what would you expect to happen to the rate of decomposition and net ecosystem production (NEP)? a. Both decomposition rate and NEP would decrease. b. Neither would change. c. Decomposition rate would increase and NEP would decrease. d. Decomposition rate would decrease and NEP would increase.
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Textbook Question
Which of the following strategies would most rapidly increase the genetic diversity of a population in an extinction vortex? a. Establish a reserve that protects the population's habitat. b. Introduce new individuals transported from other populations of the same species. c. Sterilize the least fit individuals in the population. d. Control populations of the endangered population's predators and competitors.
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