5/22/2016  |   13:30 - 13:45   |  306

EARLY CAREER OF DR. CLIFF DAHM: THE OREGON YEARS Cliff Dahm conducted his graduate research at Oregon State University. As a young oceanography graduate student from Boise, Idaho, Cliff explored nutrient dynamics of the Atlantic Ocean, his first research on dissolved organic carbon. During his doctoral program, the Columbia River and H.J. Andrews LTER program rescued Cliff from the deep abyss of oceanography and introduced him to freshwater science. He and his major professor, Kilho Park, invited me to join them in a study of nutrient export from the Columbia River, including of DOC, DIC, N, P and other nutrients. As a new member of the Andrews program, Cliff explored DOC sorption in streams, dynamics of N and DOC, and composition of detritus in floodplains and stream channels. These studies led to research on N dynamics with Amy Ward and the eruption of Mount St. Helens with Jim Sedell. His trust in his colleagues was almost always well founded, though sometimes it risked both life and face. Since his early days at OSU, Cliff’s athletic talents and knowledge of wine have become equally as impressive his scientific accomplishments.

Stan Gregory (Primary Presenter/Author), Oregon State University, stanley.gregory@oregonstate.edu;


Gary Lamberti ( Co-Presenter/Co-Author), University of Notre Dame, glambert@nd.edu;


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5/22/2016  |   13:45 - 14:00   |  306

INTERDISCIPLINARY COLLABORATION AND GOOD SCIENCE ACROSS FRESHWATER ECOSYSTEMS: A CLIFF DAHM LEGACY Cliff Dahm was a member of the Stream Team at Oregon State University during the 1970s and ‘80s when it included a diverse group of young scientists, who worked successfully together on many projects. One of the signature characteristics of this group was the interactions and friendships that continued after they dispersed across the US, and that were sustained over the lifetime of their careers. One testament to this collaborative spirit was The Freshwater Sciences Interdisciplinary Doctoral Program funded by the NSF Integrative Graduate Education and Research Training (IGERT) Program. This project was imagined, developed and brought to fruition by 4 Stream Team alumni and their colleagues, focused on study of freshwater ecosystems in contrasting climates of Alabama and New Mexico, and was the first inter-institutional IGERT project funded. Cliff also brought his expertise to collaborative projects in south Florida, contributing to the evaluation and success of Kissimmee River restoration. He served as a science advisor to the state’s restoration team, and published on the conceptual model that lead to successful program outcomes.

Nicholas Aumen (Primary Presenter/Author), US Geological Survey, naumen@usgs.gov;


Amelia Ward ( Co-Presenter/Co-Author), University of Alabama, award@ua.edu;


Milton Ward ( Co-Presenter/Co-Author), University of Alabama, mward@ua.edu;


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5/22/2016  |   14:00 - 14:15   |  306

ADVANCING CAREERS AND INQUIRY THROUGH INTERDISCIPLINARY RESEARCH – CND AND THE UNM HYDROGEOECOLOGY PROGRAM The adage that a jack of many trades is the king (or queen) of none remains simultaneously a skeptic’s view and a tacit challenge to interdisciplinary science. During a seven year period in the 1990s, the University of New Mexico’s ‘Hydrogeoecology’ program was initiated and flourished under a nurturing leadership supplied by Cliff Dahm. Cross-disciplinary research was the consortium’s cornerstone; the central endeavor was to meld the quantitative tools of hydrogeology with questions addressing the ecological form and function of aquatic ecosystems as they varied across the landscape’s geologic template. Simultaneously, Cliff fostered an environment valuing personal and professional growth among participants who ranged from high school students to senior faculty. Trust and expectation were core values promoted and reinforced through team science, peer review, and interdependence. An incomplete assessment registers twenty four charter members who have gone on to positions in private entities, academia, and agencies like the EPA, USGS, and NPS. Despite the purported trappings of interdisciplinary research, the success demonstrated by this program and many of its decedents speaks to the prescient character of Cliff’s career.

H. Maurice Valett (Primary Presenter/Author), University of Montana, Division of Biological Sciences, maury.valett@umontana.edu;


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5/22/2016  |   14:15 - 14:30   |  306

MICROBIAL ECOLOGY OF POLLUTION ABATEMENT My scientific career started with Cliff Dahm at the University of New Mexico. The western United States had been experiencing a new “gold rush” using cyanide to mine previously unextractable, low-grade ore and we studied the potential to stimulate native cyanide-degrading microorganisms based on basic oceanographic principles, e.g., the Redfield ratio. Cliff’s concurrent hyporheic research helped illustrate anaerobic microbiology and how alternate electron acceptors influenced the fate and transport chemical pollutants. This led to work on several high-profile risk assessments including heavy-metal contaminated groundwater upwelling into the Columbia River and the BP Gulf Spill. Hazardous wastes are, of course, a serious concern but the influence of most chemicals on the planet’s wellbeing are pale in comparison to the threat posed by climbing carbon dioxide (CO2) levels. Considering this, I keep coming back to an assignment in Cliff’s advanced limnology class on "High-Nutrient, Low Chlorophyll" oceans and the geoengineering potential for sequestering atmospheric CO2. Although planetary geoengineering has serious concerns, we have to think about every possible alternative to continued global warming: Cliff, thank you for helping us think big.

James Markwiese (Primary Presenter/Author), US Environmental Protection Agency, markwiese.james@epa.gov;


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5/22/2016  |   14:30 - 14:45   |  306

APPRECIATING CROSS-DISCIPLINARY TRAINING IN AQUATIC SCIENCES One of the unique aspects of Cliff Dahm's career is his background in Oceanography and I will argue this has fostered his appreciaion and application of approaches blending multiple disciplines. Cliff was one of the first to quantitatively contrast hydrological attributes of shallow groundwater and explore effects on chemistry and ecological processes. Furthermore he employed a variety of sensors to capture hard-to-observe or high-frequency or rare events and many of these were first employed in oceanographic surveys. I will summarize a few of these contributions, tracing both the concepts and approaches Cliff applied productively back to a training and set of experiences somewhat different from most stream ecologists. I will propose that building such activities into undergraduate and graduate programs will further the field.

Stuart Findlay (Primary Presenter/Author), cARY iNSTITUTE OF eCOSYSTEM sTUDIES, findlays@caryinstitute.org;


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5/22/2016  |   14:45 - 15:00   |  306

CLIFF DAHM’S LEADERSHIP INFLUENCE ON THE FRESHWATER SCIENCES INTERDISCIPLINARY DOCTORAL PROGRAM In 1999, Dr. Clifford Dahm, Dr. Amelia Ward, and several colleagues received support from the National Science Foundation to create an Integrative Graduate Education Research Training initiative called the Freshwater Sciences Interdisciplinary Doctoral Program (FSIDP), and this program supported the graduate degrees of 29 students at the collaborating universities. A major goal of the FSIDP was to prepare students in freshwater sciences for diverse career opportunities by emphasizing integrative graduate training in basic and applied aspects of ecology, hydrology, and geochemistry. In this presentation we highlight leadership and mentoring roles that Cliff played throughout the FSIDP program. Cliff and colleagues showed their commitment to the success of the FSIDP by fostering a collaborative, interdisciplinary, and fun learning environment for students, by providing opportunities for professional development, and by serving as role models both personally and professionally. We provide an overview of student-driven research and other professional activities associated with the FSIDP. We also trace career trajectories of graduates who have been inspired by Cliff’s example and approach to collaborative research that crosses disciplinary, regional, and generational boundaries.

Chelsea Crenshaw ( Co-Presenter/Co-Author), University of New Mexico, ccrensha@unm.edu;


Jennifer Follstad Shah (Primary Presenter/Author), University of Utah, jennifer.shah@envst.utah.edu;


Mary Harner ( Co-Presenter/Co-Author), University of Nebraska at Kearney, harnermj@unk.edu;


Dianne McDonnell ( Co-Presenter/Co-Author), Northern Arizona University, Dianne.McDonnell@nau.edu;


Teresa Tibbets ( Co-Presenter/Co-Author), The Nature Conservancy, riosuerte@gmail.com;


Lydia Zeglin ( Co-Presenter/Co-Author), Kansas State University, lzeglin@ksu.edu;


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