Welcome to Kelsey Bartlett!

We’re very happy to have with us Kelsey Bartlett, who is an undergraduate at George Washington University! Kelsey is georeferencing herbarium records of Ascelpias (milkweeds) of North America. Most these records are not georeferenced, or if they are, lack an estimate of uncertainty in the coordinates. As a result, about 90% of these records would normally be discarded in a typical biogeographic analysis. This would create an incomplete picture of these species’ environmental tolerances and vulnerability to climate change. Kelsey is working to help address this need.

Comparison of range size of Asclepias asperula (Spider Antelope Horns Milkweed) estimated with just “accurate” (green) records and accurate and “vague” records (orange).