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Habitat Fragmentation: Effects on Species Survival

Description: Habitat fragmentation is the process by which a large, continuous habitat is divided into smaller, isolated patches. This can have a number of negative effects on the species that live in the habitat, including reduced genetic diversity, increased risk of extinction, and changes in community structure.
Number of Questions: 14
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Tags: ecology conservation habitat fragmentation
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What is habitat fragmentation?

  1. The process by which a large, continuous habitat is divided into smaller, isolated patches

  2. The process by which a small, isolated habitat is merged into a larger, continuous habitat

  3. The process by which a habitat is destroyed

  4. The process by which a habitat is created


Correct Option: A
Explanation:

Habitat fragmentation is the process by which a large, continuous habitat is divided into smaller, isolated patches. This can be caused by a number of factors, including human activities such as deforestation, agriculture, and urbanization.

What are some of the negative effects of habitat fragmentation?

  1. Reduced genetic diversity

  2. Increased risk of extinction

  3. Changes in community structure

  4. All of the above


Correct Option: D
Explanation:

Habitat fragmentation can have a number of negative effects on the species that live in the habitat, including reduced genetic diversity, increased risk of extinction, and changes in community structure.

How does habitat fragmentation reduce genetic diversity?

  1. By isolating populations and preventing gene flow

  2. By increasing the number of mutations in a population

  3. By decreasing the number of individuals in a population

  4. By increasing the rate of inbreeding


Correct Option: A
Explanation:

Habitat fragmentation can reduce genetic diversity by isolating populations and preventing gene flow. This can happen when a habitat is divided into smaller, isolated patches, which makes it difficult for individuals to move between populations and exchange genes.

How does habitat fragmentation increase the risk of extinction?

  1. By reducing the size of populations

  2. By increasing the isolation of populations

  3. By making populations more vulnerable to environmental changes

  4. All of the above


Correct Option: D
Explanation:

Habitat fragmentation can increase the risk of extinction by reducing the size of populations, increasing the isolation of populations, and making populations more vulnerable to environmental changes.

How does habitat fragmentation change community structure?

  1. By changing the relative abundance of different species

  2. By changing the interactions between different species

  3. By changing the physical structure of the habitat

  4. All of the above


Correct Option: D
Explanation:

Habitat fragmentation can change community structure by changing the relative abundance of different species, changing the interactions between different species, and changing the physical structure of the habitat.

What are some of the human activities that can cause habitat fragmentation?

  1. Deforestation

  2. Agriculture

  3. Urbanization

  4. All of the above


Correct Option: D
Explanation:

Habitat fragmentation can be caused by a number of human activities, including deforestation, agriculture, and urbanization.

What are some of the things that can be done to mitigate the effects of habitat fragmentation?

  1. Protecting existing habitats

  2. Restoring degraded habitats

  3. Creating wildlife corridors

  4. All of the above


Correct Option: D
Explanation:

There are a number of things that can be done to mitigate the effects of habitat fragmentation, including protecting existing habitats, restoring degraded habitats, and creating wildlife corridors.

What is the difference between habitat fragmentation and habitat loss?

  1. Habitat fragmentation is the process by which a large, continuous habitat is divided into smaller, isolated patches, while habitat loss is the process by which a habitat is completely destroyed.

  2. Habitat fragmentation is the process by which a small, isolated habitat is merged into a larger, continuous habitat, while habitat loss is the process by which a habitat is completely destroyed.

  3. Habitat fragmentation is the process by which a habitat is created, while habitat loss is the process by which a habitat is completely destroyed.

  4. Habitat fragmentation and habitat loss are the same thing.


Correct Option: A
Explanation:

Habitat fragmentation is the process by which a large, continuous habitat is divided into smaller, isolated patches, while habitat loss is the process by which a habitat is completely destroyed.

What are some of the consequences of habitat fragmentation for individual species?

  1. Reduced genetic diversity

  2. Increased risk of extinction

  3. Changes in behavior

  4. All of the above


Correct Option: D
Explanation:

Habitat fragmentation can have a number of consequences for individual species, including reduced genetic diversity, increased risk of extinction, and changes in behavior.

What are some of the consequences of habitat fragmentation for ecosystems?

  1. Changes in species composition

  2. Changes in ecosystem function

  3. Loss of biodiversity

  4. All of the above


Correct Option: D
Explanation:

Habitat fragmentation can have a number of consequences for ecosystems, including changes in species composition, changes in ecosystem function, and loss of biodiversity.

What are some of the challenges to mitigating the effects of habitat fragmentation?

  1. The cost of protecting and restoring habitats

  2. The difficulty of creating wildlife corridors

  3. The need to balance conservation with other land uses

  4. All of the above


Correct Option: D
Explanation:

There are a number of challenges to mitigating the effects of habitat fragmentation, including the cost of protecting and restoring habitats, the difficulty of creating wildlife corridors, and the need to balance conservation with other land uses.

What are some of the potential benefits of habitat fragmentation?

  1. Increased edge habitat

  2. Increased species diversity

  3. Increased genetic diversity

  4. None of the above


Correct Option: D
Explanation:

There are no known benefits of habitat fragmentation.

What is the role of habitat fragmentation in the current extinction crisis?

  1. Habitat fragmentation is a major driver of the current extinction crisis

  2. Habitat fragmentation is a minor driver of the current extinction crisis

  3. Habitat fragmentation is not a driver of the current extinction crisis

  4. The role of habitat fragmentation in the current extinction crisis is unknown


Correct Option: A
Explanation:

Habitat fragmentation is a major driver of the current extinction crisis. It is estimated that habitat fragmentation is responsible for the extinction of 10-20% of all species.

What are some of the things that can be done to reduce the impacts of habitat fragmentation?

  1. Protecting existing habitats

  2. Restoring degraded habitats

  3. Creating wildlife corridors

  4. All of the above


Correct Option: D
Explanation:

There are a number of things that can be done to reduce the impacts of habitat fragmentation, including protecting existing habitats, restoring degraded habitats, and creating wildlife corridors.

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