Researchers in conservation biology and other non-medical fields are adopting systematic review as a research methodology. Since this methodology requires extensive and well-documented literature searching, it is beneficial for information professionals to understand disciplinary developments in its use. This article investigates trends in systematic review publication in conservation biology journals between 1998 and 2017 and examines the prevalence of search reporting among these systematic reviews. Results show an increase in published systematic reviews over the study period, and the majority of these include a description of the literature search. However, evidence of variable search quality and reporting indicates an important role for librarians in improving literature search strategies and documentation.