Invasive Species


Alaska's parks are home to complex native communities of plants and animals that have developed over millions of years. The delicate natural balance of these communities is threatened by the influx of invasive species, which are considered the second-greatest threat to biodiversity after habitat loss.

Invasive species grow rapidly, spread with little or no human assistance, and are expensive to remove and difficult to control once established. These species are a concern because they can out-compete native species for limited resources and can change the structure and function of ecosystems. Establishment of invasive species can also result in loss of habitat and food sources for native insects, birds, fish, and other wildlife.
A handful of Elodea

Species to Watch

Elodea is a species we are keeping an eye on. So far it has not been found in our parks, though it is found in Alaska.

The EPMT crew in 2015

Exotic Plant Management Team

Invasive plant management depends on the Exotic Plant Management Team.

A researcher scans for invasive aquatic plants.

Weed Prevention

The best way to manage invasives is to prevent them. We conduct surveys to detect new infestations early so we can treat them more easily.

A crew spraying dandelions.

Weed Management

Our field crews do the important work of treating invasive plants in order to maintain the native plants and animals of our park ecosystems.

Last updated: April 30, 2018