Irena Creed, PhD
Ecosystem Science, Ecosystem Services, Global Change
Ecohydrology - Hydrology (Water Movement), Biogeochemistry (Nutrient Cycling), Phytoplankton Ecology & Physiology (with emphasis on Cyanobacteria)
“The places where water comes together with other water.
Those places stand out in my mind like holy places.”
― Raymond Carver, Where Water Comes Together with Other Water: Poems
I am an ecosystem scientist. I work closely with my diverse and active research group to develop conceptual models, and to develop the scientific and practical tools needed to challenge our conceptual models, to determine the consequences of human modification on Earth. My research group, together with collaborators from government, industry and an international network of scientists, study the impacts of global change (climate change, atmospheric pollution, and land use/land cover change) on ecosystem structure, function and services. We work at multiple scales, investigating how hydrology influences ecological and physiological processes in terrestrial (forest, agriculture) and aquatic ecosystems (streams, wetlands, lakes, rivers). We use contemporary techniques, including satellite- and ground-based measurements, field and laboratory experimental manipulations, and statistical and mathematical models to develop a predictive understanding of global change effects on ecosystem hydrological and biogeochemical processes and their ecological endpoints. We are focusing our research on two major watershed ecosystems: the Saskatchewan River basin that drains into Lake Winnipeg and eventually to the Arctic Ocean; and the Great Lakes-St Lawrence River basin that serves as the major hydrologic corridor to move water to the Atlantic Ocean. We also work closely with government and industry partners to translate our scientific findings into policy and management relevant tools.
Degrees and Institutions
- BSc University of Toronto (Zoology)
- MSc University of Toronto (Botany, Environmental Sciences)
- PhD University of Toronto (Geography)
- Biology 4405 - Ecosystem Ecology
- Creed IF, Cormier R, Laurent KL, Accatino F, Igras J, Henley P, Friedman KB, Johnson LB, Crossman J, Dillon PJ, Trick CG. 2016. Formal integration of science and management systems needed to achieve a thriving and prosperous Great Lakes. Bioscience. doi: 10.1093/biosci/biw030
- Creed, IF, Weber, M, Accatino, F, Dreutzweiser, DP. 2016. Managing forests for water in the anthropocene- The best kept secret services of forest ecosystems. Forests. 7: 60; doi:10.3390/f7030060
- Cohen MJ, Creed IF, Alexander L, Basu N, Calhoun A, Craft C, D’Amico E, DeKeyser E, Fowler L, Golden H, Jawitz J, Kalla P, Kirkman LK, Lane CR, Lang M, Leibowitz SG, Lewis DB, Marton J, McLaughlin DL, Mushet DM, Raanan-Kiperwas H, Rains MC, Smith L, Walls S. 2016. Do geographically isolated wetlands influence landscape functions? Proceedings of the National Academy of Sciences 113:1978-1986.
- Sorichetti RJ, Creed IF, Trick CG. 2016. Iron and iron-binding ligands as cofactors that limit cyanobacteria biomass across a lake trophic gradient. Freshwater Biology. 61: 146-157.
- Creed IF, McKnight DM, Pellerin B, Green MB, Bergamaschi B, Aiken G, Findlay SEG, Burns D, Shanley J, Striegl R, Aulenbach B, Clow D, Laudon H, McGlynn B, McGuire K, Smith R, Stackpoole S. 2015. Tracking dissolved organic matter from mountains to the sea: revisiting the river continuum concept. Canadian Journal of Fisheries and Aquatic Sciences 72: 1272-1285.
- Creed IF, Laurent KL. 2015. The Great Lakes Futures Project. Journal of Great Lakes Research 41, Supplement 1: 1-7. Special Issue on the Great Lakes Futures Project.
- Creed IF, Spargo AT, Jones JA, Buttle JM, Adams MB, Beall FD, Booth EG, Campbell JL, Clow DW, Elder K, Green MB, Grimm NB, Miniat C, Ramal PS, Saha AK, Sebestyen SD, Spittlehouse D, Sterling S, Williams MW, Winkler R, Yao H. 2014. Changing forest water yields in response to climate warming: Results from long-term experimental watershed sites across North America. Global Change Biology 20: 3191-3208.
- Molot L, Watson SB, Creed IF, Trick CG, McCabe SK, Verschoor MJ, Sorichetti RJ*, Powe C, Venkiteswan JJ, Schiff SL. 2014. A novel model for cyanobacteria bloom formation: The critical role of anoxia and ferrous iron. Freshwater Biology 59: 1323-1340.
- Sorichetti RJ, Creed IF, Trick CG. 2014. Evidence for iron-regulated cyanobacterial predominance in oligotrophic lakes. Freshwater Biology 59: 679-691.
- Mengistu SG, Creed IF, Webster KL, Enanga EM, Beall FD. 2014. Searching for similarity in topographic controls on carbon, nitrogen and phosphorus export from forested headwater catchments. Hydrological Processes 28: 3201-3216.