Christina conducts threat assessments of tree species around the world for the International Union for Conservation of Nature (IUCN) Red List.
Threat assessments are focused in oak diversity hotspots, primarily Mexico/Central America and Asia, as well as on the trees of the United States. Through literature reviews and information gathered from expert sources, species are assessed to categorize their threat of extinction, then are assigned conservation recommendations appropriate for their needs.
Coordination with conservation organizations based in Central America and Southeast Asia allows these recommendations to be put into place. These projects are part of a collaboration with the Global Trees Assessment initiative, led by Botanical Gardens Conservation International (BGCI) and IUCN.