Invasive Species

an example of an indirect effect of an invasive species on other populations?

Blister rust kills pine trees that provided habitat for birds.

What effect has this organism had on trees in deciduous forests?

Gypsy Moth

Invasive species must overcome barriers to achieve success. Which of these gets the most support from humans?

large-scale geographic movement

Which of these invasive species has had a detrimental effect on property values (built capital)?

Asian Longhorned beetle

Which of the following invasive plants interferes with boating opportunities?

Hydrilla

If a non-native species causes harm in an ecosystem, it is considered invasive.

True

Which of the following statements about invasive species is true?

Invasive species have the potential to cause environmental harm.

A fungal blight led to the disappearance of which tree population from American deciduous forests?

Chestnut

Societal factors in identifying invasive plants

Consider economic impact, cultural values, land use, and ecological consequences

Barriers surmounted by invasive species & human support

Invasive species overcome geographic, reproductive, and ecological barriers

Environmental harm by invasive species

Includes loss of native biodiversity, alteration of habitats, and disruption of ecosystem functions

Direct effects

Competition, predation, disease transmission

indirect effects

Changes in nutrient cycling, fire regimes, or hydrology