Forest Health: Non-native Invasive Species

What is an Invasive Species?

An "invasive species" is defined as a species that is

1) non-native (or alien) to the ecosystem under consideration and

2) whose introduction causes or is likely to cause economic or environmental harm or harm to human health. (Executive Order 13112).

Invasive species can be plants, animals, and other organisms (e.g., microbes). Human actions are the primary means of invasive species introductions. 

Invasive Species

Nonnative Invasive Plants of Southern Forests

Monitoring Invasive Species

Invasive Plants of the Thirteen Southern States

Insect Threats

Chestnut Borer | Gypsy Moth | Hemlock Woolly Aldegid | Southern Pine Beetle | Sudden Oak Death

Other Forest Health Topics

Four Threats to Forest Health | Forest Health Initiative | Red cockaded woodpecker | Prescribed Burning

Title: Non-Native Invasive Species
Last Updated: July 27, 2009