Impact of Alien Species on Ecosystems

The video discusses the accidental release of alien species, such as the common rat, into ecosystems like Australia and New Zealand. It highlights the significant impact these species have, including competition with native species, potential extinction, and the introduction of new diseases. The video uses the example of the common rat to illustrate these points, emphasizing the importance of discussing named examples and accidental releases.

What is an example of an alien species that was accidentally introduced to Australia?

• The common rat

• The European rabbit

• The cane toad

• The domestic cat

Why is it important to use named examples when discussing alien species?

• To simplify the explanation

• To avoid confusion with other topics

• To make the discussion more interesting

• To ensure clarity and specificity

How can alien species impact native ecosystems?

• By improving biodiversity

• By outcompeting native species

• By increasing food supply

• By reducing pollution

What is a potential consequence of alien species outcompeting native species?

• Extinction of native species

• Increased tourism

• Improved ecosystem health

• Decreased human population

Which native Australian species competes with the common rat?

• Emu

• Bilby

• Koala

• Kangaroo

What is a characteristic of the Bilby?

• It is a type of bird

• It is a large marsupial

• It is a marine animal

• It resembles a rabbit

How might alien species introduce new diseases to an ecosystem?

• By reducing the number of predators

• By increasing the population of native species

• By bringing pathogens that native species are not immune to

• By improving the climate

What disease was introduced to the Aboriginal population by settlers?

• Influenza

• Cholera

• Smallpox

• Malaria

What is a common perception of the common rat in terms of cleanliness?

• It is considered very clean

• It is seen as a dirty animal

• It is known for its hygiene

• It is regarded as a pest-free species

What is a historical example of disease introduction by settlers?

• Introduction of influenza to Africa

• Introduction of smallpox to Australia

• Introduction of malaria to Europe

• Introduction of cholera to Asia