We have a lot of books in the collection that deal with invasive plants and animals. If you're looking for a particular species, try typing it in and see what comes up. You can also use combinations of words like biological, organism, plant, animal, invasion, invasive, introduced, etc. For example:
If your first search brings up too many irrelevant items, try using the Refine by Topic suggestions in the box on the left of the search results screen.
We also have a number of reference books on this issue. Take a look through these books for background information or to look up possible topic ideas.