Invasive Species Basics
Which of the following is NOT an invasive species: Jericho bunnies, Japanese knotweed, or Sea otters?
Sea otters.
What can happen to an ecosystem’s biodiversity if invasive species are not controlled?
Biodiversity can decrease because invasive species may cause native species to die off or disappear.
What is the primary way invasive species are introduced into new regions?
Through human activities such as trade, travel, and urbanization.
Where can you find a large population of invasive bunnies that threaten native vegetation?
Jericho beach
What is the main reason invasive species are harmful to ecosystems?
They out-compete native species for resources like food and habitats, leading to a loss of biodiversity.
What is an example of a plant species that is invasive and harms native plants in North America?
Japanese knotweed.
How can urbanization contribute to the spread of invasive species?
Urbanization increases human movement, allowing invasive species to hitch a ride to new locations.
What happens to native vegetation in Jericho due to the over-consumption by invasive bunnies?
The bunnies over-consume native plants, threatening their survival and reducing biodiversity.
Which type of organism, R-selected or K-selected, is more likely to become invasive?
R-selected organisms, because they reproduce quickly and in large numbers.
How does the introduction of invasive species affect species that rely on each other for survival?
Invasive species can divide relationships between species that rely on each other, making it harder for these species to survive.
Which two continents are major sources of invasive species that enter North America?
Europe and Asia.
What makes the brown marmorated stink bug an invasive species?
It is a non-native insect that competes with native species for resources and can damage crops.
How do invasive species contribute to the extinction of native species?
Invasive species compete for resources, and if they out-compete native species, they can drive them to extinction.
Why might invasive species be able to dominate ecosystems and form dense populations?
They are often adaptable, reproduce quickly, and have few natural predators in the new environment.
Why do invasive species from regions with similar climates to North America have a higher chance of survival?
Because the climates are similar, the species can adapt and thrive in the new environment.
What is an example of an invasive plant species that grows aggressively and is harmful to native ecosystems?
Giant hogweed.
What does it mean if a species is referred to as a "generalist"?
A generalist is an organism that can adapt to a variety of environments and food sources, which makes it more likely to become invasive.
What role do invasive species play in changing the habitats of native species?
Invasive species can alter habitats, making them less suitable for native species to live in.
How do animals, such as birds, contribute to the spread of invasive species?
Birds can carry seeds or small organisms over long distances, helping them spread to new areas.
Why is English ivy considered an invasive species?
English ivy grows rapidly and out-competes native plants for space and resources, threatening local biodiversity.