Titus is an ecologist that is employed by the natural park of the Bieschbos in the Southern part of the Netherlands. His specialty is invasive species. An invasive species is a species that originally does not live in a certain ecosystem but has been introduced into a foreign ecosystem, manages to establish itself in that ecosystem and causing ecological damage to that ecosystem.
The species Titus currently is most worried about is the coypu (see image 4). The coypu was introduced in the 1920’s of the previous century in Germany to be bred for its fur. The fur was used to create fur coats and other kind of clothing. Some of these animals escaped and because of the adaptations of the coypu, it managed survive in woodlands ecosystems with a lot of open water, much like the Biesbosch.