Biodiversity Conservation through Movement Corridors

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Which factor is responsible for the current biodiversity crisis on Earth?

Natural extinction rate

Loss of species diversity

Decreased genetic diversity

Human activities (correct)

What does genetic diversity include?

Variety of ecosystems across the biosphere

Individual genetic variation within a population (correct)

Variety of adaptations to local conditions

Variety of species in an ecosystem

What is the impact of extinction on genetic diversity?

Extinction stabilizes genetic diversity

Extinction reduces genetic diversity (correct)

Extinction has no impact on genetic diversity

Extinction increases genetic diversity

What is species diversity?

Variety of species in an ecosystem Signup and view all the answers

What is extirpation?

Local extinction Signup and view all the answers

What percentage of known bird species are threatened or near extinction according to the IUCN?

12% Signup and view all the answers

What is the role of the Committee on the Status of Endangered Wildlife in Canada (COSEWIC)?

Assess conservation status and make recommendations to federal government Signup and view all the answers

Which factor is the single greatest threat to biodiversity?

Habitat loss Signup and view all the answers

What is the goal of the Species at Risk Act (SARA)?

To protect endangered and vulnerable species Signup and view all the answers

What is the IUCN Red List used for?

Identifying species at risk of extinction Signup and view all the answers

What is the main reason for the decline in biodiversity through human activities?

Habitat loss Signup and view all the answers

Which process helps sustain human life by filtering water and decomposing wastes?

Bacteria and fungi Signup and view all the answers

What is the main threat to biodiversity on islands?

Introduced species Signup and view all the answers

What is the focus of landscape ecology in terms of biodiversity conservation?

Sustaining biodiversity of communities and ecosystems Signup and view all the answers

Which of the following is NOT one of the global changes brought about by humans mentioned in the text?

Ozone depletion Signup and view all the answers

Which of the following is a characteristic of movement corridors?

They connect isolated patches of habitat Signup and view all the answers

What is the purpose of buffer zones in protected areas?

To regulate and prevent extensive alterations of the protected area Signup and view all the answers

What is the critical load?

The amount of added nutrient that can be absorbed by plants without damaging ecosystem integrity Signup and view all the answers

What is the process by which toxic chemicals build up within predators called?

Biomagnification Signup and view all the answers

Which of the following acts was NOT passed in the early 1970s?

Environmental Protection Agency Act Signup and view all the answers

Who is the author of the book 'Silent Spring' that is mentioned in the text?

Rachel Carson Signup and view all the answers

Which of the following is a consequence of elevated CO2 levels in greenhouse experiments?

Forestry plots produced 15% more wood Signup and view all the answers

What is the main cause of the destruction of ozone?

Accumulation of chlorofluorocarbons (CFCs) Signup and view all the answers

Which of the following is a solution to reduce greenhouse gas emissions?

Reducing burning of coal, natural gas, and wood Signup and view all the answers

What is the Montreal Protocol?

A treaty that regulates the use of ozone-depleting chemicals Signup and view all the answers

What are the three pillars of sustainability?

Connect natural science, social science, economics, and humanities Signup and view all the answers

What is the main consequence of the depletion of atmospheric ozone?

Increased intensity of UV rays reaching Earth Signup and view all the answers

What is the effect of elevated CO2 levels on insect pests and disease?

They may become more common Signup and view all the answers

What is the future solution proposed to reduce CO2 emissions?

Capture and bury CO2 emissions Signup and view all the answers

What is the effect of elevated CO2 levels on plant growth in greenhouse experiments?

Plants grow faster Signup and view all the answers