The notions of biodiversity and ecosystem services are frequently confused. For example, scientific articles often include the term "biodiversity" in the title or among the key words, whereas in fact, the article studies a biological process or an ecosystem service for instance, and not the diversity of life forms within an ecosystem. It is necessary not to confuse topics dealing with the diversity of life forms, i.e. biodiversity in the sense of the Convention on biological diversity (see a summary of definitions, Gosselin et al., 2004) and those dealing with life itself or ecosystem services, which are more general concepts. This confusion is even less understandable given that ecosystem services are not determined exclusively by biodiversity.