Nonnative species

Nonnative species or Invasive species are organisms that are introduced into an ecosystem outside of their native range. These species can have significant impacts on the ecosystems they invade by disrupting the natural balance, competing with native species for resources, and altering habitats.

Introduction

Nonnative species, also known as alien species, exotic species, or introduced species, are species that have been moved from their native habitats to new areas, either intentionally or unintentionally. These species can be plants, animals, or microorganisms. The introduction of nonnative species can occur through various means, including human activities such as trade, travel, and agriculture.

Impact on Ecosystems

Nonnative species can have profound effects on the ecosystems they invade. They can outcompete native species for resources such as food and habitat, leading to declines in native species populations. In some cases, nonnative species can even cause the extinction of native species. Nonnative species can also alter the physical characteristics of their new habitats, such as changing soil chemistry or water flow patterns.

Management and Control

The management and control of nonnative species is a complex and challenging task. It often involves a combination of prevention, early detection and rapid response, containment, control, and long-term management. Management strategies can include physical removal, use of pesticides, biological control, and public education.

Examples of Nonnative Species

Some well-known examples of nonnative species include the Brown Tree Snake in Guam, the Zebra Mussel in the Great Lakes, and the Cane Toad in Australia. These species have caused significant ecological and economic damage in their new habitats.

See Also

• Invasive Species
• Biodiversity
• Conservation Biology
• Ecology