![]() ![]() ![]() C – A pest of known economic or environmental detriment and, if present in California, it is usually widespread.B – A pest of known economic or environmental detriment and, if present in California, it is of limited distribution.A – A pest of known economic or environmental detriment and is either not known to be established in California or it is present in a limited distribution that allows for the possibility of eradication or successful containment.Watch – These species have been assessed as posing a high risk of becoming invasive in the future in California.Alert – An Alert is listed on species with High or Moderate impacts that have limited distribution in California, but may have the potential to spread much further.Ecological amplitude and distribution are generally limited, but these species may be locally persistent and problematic. Their reproductive biology and other attributes result in low to moderate rates of invasiveness. Limited – These species are invasive but their ecological impacts are minor on a statewide level or there was not enough information to justify a higher score.Ecological amplitude and distribution may range from limited to widespread. Their reproductive biology and other attributes are conducive to moderate to high rates of dispersal, though establishment is generally dependent upon ecological disturbance. Moderate – These species have substantial and apparent-but generally not severe-ecological impacts on physical processes, plant and animal communities, and vegetation structure.Most are widely distributed ecologically. ![]() Their reproductive biology and other attributes are conducive to moderate to high rates of dispersal and establishment. High – These species have severe ecological impacts on physical processes, plant and animal communities, and vegetation structure. ![]()
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