Water | Research Area Water is the lifeblood of our planet, and we study everything from mountain snow to the ocean. Our work spans how climate change affects water resources to understanding urban water quality, coastal marine ecosystems, and water justice. John Bershaw Atmospheric circulation and meteoric water isotope evolution I do a variety of research and teaching within Earth Science on paleoclimate, stable isotope geochemistry, stratigraphy, and basin analysis. I have published on the uplift history of the Altiplano, Pamir, Tibetan Plateau,... See full profile for John Bershaw H C Heejun Chang Climate impacts on water resources, flood and drought hazards, water-related ecosystem services Heejun Chang serves as associate dean for research and graduate programs in the College of Liberal Arts and Sciences since July 2021. He joined PSU in 2001 as an assistant professor after obtaining a Ph.D. at the Pennsylvania... See full profile for Heejun Chang Catherine de Rivera Ecology and behavior of marine and estuarine invertebrates Dr. de Rivera studies how anthropogenic changes in habitat connectivity –whether because of biological invasion, the built environment, or sea level rise—affect animal populations and communities and ecosystem function.... See full profile for Catherine de Rivera P E Patrick Edwards Macroinvertebrate indicators of stream sediment, effect of ecological restoration on aquatic communities Patrick is a senior instructor in the Environmental Science and Management Department at Portland State University and Director of the Environmental Professional Program. Patrick's current research is focused on... See full profile for Patrick Edwards Kelly Gleason Interactions and feedbacks of hydrology, climatology, and ecology Dr. Kelly E. Gleason, is an Associate Professor in the Department of Environmental Science and Management, and the Director of the Graduate Certificate Program in Hydrology, at Portland State University. She received... See full profile for Kelly Gleason Elise Granek Applied coastal ecology, disturbances in marine ecosystems, coastal management Dr. Elise Granek received her PhD in Zoology/Marine Ecology from Oregon State University in 2006 and her MESc in Forest Ecology and Conservation Biology from Yale School of Forestry and Environmental Studies. Prior... See full profile for Elise Granek M H Melissa Haeffner Water insecurity and justice, social-political factors of resource access Her research unifies several research domains that contribute to the knowledge of local politics in watersheds and how they shape urban water infrastructure development in the past, in the present, and under future... See full profile for Melissa Haeffner M L Martin Lafrenz Geomorphology and water resources Research Interests Fluvial geomorphology and soils, urban stream phenomena, the legacy effects of human land use on critical zone processes, community-based watershed monitoring, and mobile GIS. Martin Lafrenz is a... See full profile for Martin Lafrenz Jen Morse Biogeochemistry, wetland and stream ecology, nutrient cycling As a biogeochemist and an ecosystem ecologist, I am broadly interested in 1) understanding ecosystem responses to environmental changes and 2) applying ecological knowledge to help inform environmental decisions, particularly... See full profile for Jen Morse Yangdong Pan Freshwater science, aquatic and algal ecology, stream restoration Dr. Yangdong Pan received his Ph.D. in 1996 in Biology from Bowling Green State University. His research centers on freshwater ecology and management. Specifically he uses algal assemblages to monitor and assess ecological... See full profile for Yangdong Pan