An invasive species is a non-native species (including seeds, eggs, spores, or other propagules) whose introduction causes or is likely to cause economic harm, environmental harm, or harm to human health. The term "invasive" is used for the most aggressive species. These species grow and reproduce rapidly, causing major disturbances to the areas in which they are present.

• Invasive species, if left uncontrolled, can and will limit land use now and into the future.
• Invasive species can negatively impact hunting, fishing, camping, hiking, boating and other outdoor recreational activities.
• Approximately 42% of threatened or endangered species are at risk due to non-native, invasive species.

General Information from Partners

CALIFORNIA INVASIVE PLANT COUNCIL
Invasive Plants

CANADA-ONTARIO INVASIVE SPECIES CENTRE
Learn About Invasive Species

CENTER FOR AQUATIC AND INVASIVE PLANTS
Why Manage Invasive Plants?

CENTER FOR INVASIVE SPECIES AND ECOSYSTEM HEALTH
Invasive Species 101: An Introduction

CONABIO
Análisis de Riesgo - PDF (Spanish)
Diplomado: Fundamentos para la Prevención y Manejo de Especies Exóticas Invasoras en México (2011) (Spanish)
Introduced Species in Mexico (Spanish)
Introduction to Invasive Species in Mexico (Spanish)
Malezas de México (Spanish)
Reuniones y Talleres (Spanish)

NATIONAL INSTITUTE OF INVASIVE SPECIES SCIENCE
Why Invasives?

MIPN
Prevention- YOU can help prevent the spread of invasive plants!

TEXAS INVASIVE SPECIES INSTITUTE
What are Invasive Species?

Invasive Species Images

CENTER FOR INVASIVE SPECIES AND ECOSYSTEM HEALTH
Bugwood Image Database
ForestryImages.org
ForestPests.org
InsectImages.org
Invasive.org
IPMImages.org
WeedImages.org
BarkBeetles.org

CONABIO
Banco de Imágenes (Spanish)