Definition clarification

Invasive Species Definition Clarification and Guidance White Paper

Weeds As Examples Weeds provide good examples to clarify what is meant by an invasive species because most people have a concept of what constitutes a " weed. " Invasion can be thought of as a process that in our example, a plant must go through to become a successful, yet harmful invader. Several barriers must be overcome for a plant to be considered an invasive weed. Invasive weeds are invasi...

Invasive Species Definition Clarification and Guidance White Paper

Invasive Species Definition Clarification and Guidance White Paper

First, a geographical barrier must be overcome, which often occurs as a mountain range, ocean, or similar physical barrier to movement of seeds and other reproductive plant parts. Plants that overcome geographical barriers are known as alien plants or alien species. Alien plants are non-native plants and alien species are nonnative species. Therefore, non-native plants are those that occur outs...

Invasive Species Definition Clarification and Guidance White Paper

The second plant must o and survival are environm moisture ava germination continue to g barriers mig competition plants. Preamble: Executive Order 13112 – defines an invasive species as “an alien species whose introduction does or is likely to cause economic or environmental harm or harm to human health.” In the Executive Summary of the National Invasive Species Management Plan (NISMP) the ter...

Clarification