Map Showing 1939 Imagery Compared with Current Day and Featuring Remnant Oak Ecosystems
Mark Johnston, Lead GIS Analyst, Keller Science Action Center
Click on the map below to launch this interactive maps. This map application shows imagery captured in 1938-1939 overlaid with Oak Ecosystems from in 1939 (red) and remnant oaks still present in 2010. Speckled purple areas show current protected lands. The "spyglass" can be moved to show underlying modern-day imagery. Users need to zoom into the map to activate overlaid layers. This tool can be used by land managers to help understand the land history of the site.
Mark Johnston
Lead GIS Analyst
Mark received his undergraduate in Biology from Knox College where he also worked in a plant research lab before moving to Chicago where he received a doctorate in Ecology and Evolution from the University of Illinois at Chicago under co-advisors D. Doel Soejarto and Joel Brown. Mark’s graduate studies were on the ethnobotany and ecology of the Awá indigenous people of Carchi in northern Ecuador. After graduate school, Mark worked in the private sector doing GIS analysis work focused on watershed planning, stormwater compliance and database design.
Mark was hired by The Field Museum in 2010 in his current role where he oversees the Science Action Geospatial Team. Mark is constantly working to advance the Center and museum's use of geospatial technology (online mapping tools, mobile data collection, image classification, conservation drones) combined with the human aspects of implementing on-the-ground conservation (participatory mapping, prioritization, and coordinated conservation efforts) ultimately to help mitigate some effects of our changing climate.
Past research has included a heavy focus on urban pollinators, rights-of-way as habitat, urban forest composition, mapping invasive species, mapping green infrastructure, and leveraging the museum's collections and research records for niche modeling.
