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I am a biogeochemist working on algal blooms ![]()
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Our group makes small packages ![]()
My research is currently focused on the biogeochemical cycling of nutrients and related elements, and human and climate related disruptions of these cycles. For many years, I have conducted whole-ecosystem research at the world-renowned Experimental Lakes Area studying reservoir creation, ecosystem metabolism and eutrophication. To study the fate of biogeochemical elements, I often integrate stable isotope measurements with process based ecological models.
Hutchins RHS, Leathers JG, Schiff SL, English MC, Schultz M, Venkiteswaran JJ, Tank S, Elgood RJ, Aukes PJK. 2026. Terrestrial inputs and in-lake processes shape dissolved organic matter along a permafrost gradient. Limnology and Oceanography 71(11): e70535, https://doi.org/10.1002/lno.70535.
Baulch HM, Bauer J, Boyer L, Nugent, K, Painter KJ, Venkiteswaran JJ, Vuleta L, Whitfield CJ. 2025. Dataset of high-frequency water quality and meteorological variables in Buffalo Pound Lake, Saskatchewan, Canada, 2014 – 2021. Data in Brief 112290, https://doi.org/10.1016/j.dib.2025.112290.
Spence DS. Painter KJ, Nazemi A, Venkiteswaran JJ, Baulch HM. 2025. Climate variability and flow management impact phytoplankton biomass in a shallow reservoir. Environmental Science: Advances, https://doi.org/10.1039/D5VA00094G.
Spence DS. Painter KJ, Nazemi A, Venkiteswaran JJ, Baulch HM. 2025. Climate variability is an important driver of water treatability in a shallow reservoir. Science of the Total Environment 1004: 180786, https://doi.org/10.1016/j.scitotenv.2025.180786.
Stemkovski M, Bernhardt JR, Blonder BW, Bradford JB, Clark-Wolf K, Dee LE, Evans MEK, Iglesias V, Johnson LC, Lynch AJ, Malone SL, Osborne BB, Pastore MA, Paterson MJ, Pinsky ML, Rollinson CR, Selmoni O, Venkiteswaran JJ, Walker AP, Ward NK, Williams JW, Zarakas CM, Adler PB. 2025. Ecological acclimation: A framework to integrate fast and slow responses to climate change. Functional Ecology 39(8): 1923-1939, https://doi.org/10.1111/1365-2435.70079.
Molot LA, Schiff SL, Baulch HM, Curry RA, Depew DC, Dove A, Higgins SN, Kidd KA, Korosi JB, Paterson AM, Pick FR, Venkiteswaran JJ, Watson SB, Zastepa A. 2025. Survey of metabolically essential trace metals in inland lakes and reservoirs across Canada: What constitutes a low metal system? Canadian Journal of Fisheries and Aquatic Sciences 82: 1-21, https://doi.org/10.1139/cjfas-2024-0078.
Shah P, Venkiteswaran JJ, Molot LA, Higgins SN, Schiff SL, Baulch HM, Zastepa A. 2024. Cobalt as a potential limiting factor for heterocyst frequency in nitrogen-limited Aphanizomenon and Dolichospermum: Evidence from experimental and field studies. Freshwater Biology 69(8): 1069-1083, https://doi.org/10.1111/fwb.14290.
Virgin TL, Sonthiphand P, Coyotzi S, Hall MW, Venkiteswaran JJ, Cejudo E, Elgood RJ, Schiff SL, Neufeld JD. 2024. Microbial communities change along the 300-km length of a highly impacted river for both extreme high- and low-flow regimes. Canadian Journal of Microbiology 70(7): 289-302, https://doi.org/10.1139/cjm-2023-0092.
Tsuji JM, Shaw NA, Nagashima S, Venkiteswaran JJ, Schiff SL, Watanabe T, Fukui M, Hanada S, Tank M, Neufeld JD. 2024. Anoxygenic phototroph of the Chloroflexota uses a type I reaction centre. Nature 627, 915-922, doi: 10.1038/s41586-024-07180-y.
Reinl KL, Harris TD, North RL, Almela P, Berger SA, Bizic M, Burnet SH, Urrutia-Cordero P, Grossart H-P, Ibelings BW, Jakobsson E, Knoll LB, Lafrancois BM, McElarney Y, Morales-Williams AM, Obertegger U, Ogashawara I, Paule-Mercado MC, Peierls BL, Rusak JA, Sarkar S, Sharma S, Trout-Haney JV, Venkiteswaran JJ, Wain DJ, Warner K, Weyhenmeyer GA, Yokota K. 2023. Blooms also like it cold. Limnology and Oceanography Letters 8(4): 546-564, doi: 10.1002/lol2.10316.
Painter KJ, Venkiteswaran JJ, Baulch HM. 2023. Blooms and flows: Effects of variable hydrology and management on reservoir water quality. Ecosphere 14(3): e4472, doi: 10.1002/ecs2.4472.
Shah P, McCabe SK, Venkiteswaran JJ, Molot LA, Schiff SL. 2023. Monod parameterization and competition at low iron among freshwater cyanobacteria and chlorophytes. Hydrobiologia 850: 1141-1157, doi: 10.1007/s10750-023-05150-5.
Sharma S, Futter MN, Spence C, Venkiteswaran JJ, Whitfield CJ. 2023. Modeling subarctic watershed dissolved organic carbon response to hydroclimatic regime. Science of the Total Environment, 857(Part3): 159382, doi: 10.1016/j.scitotenv.2022.159382.
Contact Info:
Office location: Arts Building 3E4
Office hours: By appointment.
Personal website: jjvenky.github.io