Today I received an email from a guy who wanted to use some of my photos on his website. I'm always happy to oblige in such cases. It doesn't happen very often.

In this case, it's for UC Riverside. They have an impressive website about Invasive Species. Here's a little blurb about them:

The Center for Invasive Species Research based on the University of California Riverside Campus provides a forward-looking approach to managing invasions in California by exotic pests and diseases. It is well recognized that inadvertent introductions of exotic insect pests, plant diseases, weeds, and other noxious organisms (e.g., exotic crabs and mussels) provides a major and continuing threat to California's agricultural, urban, and natural environments as well as the State's precious supplies of fresh water.

California acquires one new exotic species, on average, every 60 days. At this rate, around six new species establish in California each year. Estimated losses arising from the uncontrolled population growth of these pests amounts to an estimated $3 billion per annum. The problems caused by invasive species in California are likely to worsen as population growth continues and imports from an ever increasing diversity of countries accelerates. Read more