Faculty
John Stockner

Adjunct Professor; Principal Limnologist/Oceanographer, Eco-Logic Ltd
BA Biology, Chemistry (Augustana College); PhD Zoology, Limnology & Oceanography (University of Washington)
Research Interests
Dr. Stockner’s research interests focus on pelagic and littoral nutrient dynamics, food web interactions and carbon flows in aquatic ecosystems, notably lakes and reservoirs. He is well known for his work on British Columbia’s large lacustrine ecosystems where he has extensively studied the carbon flow and C production by phytoplankton, nutrient fluxes, sediment -P retention, relating these findings to estimates of carbon ‘productive capacities’ of both pelagic and littoral habitats, using isotopic (15N, 14C) and paleolimnological techniques. His work relating carbon (C) and phosphorus (P) budgets to fisheries stock production and management, and innovative ‘nutrient prescription’ technology (lake and stream fertilization) as a restorative technique for salmonid enhancement has brought him international recognition as one of the world’s leading authorities in the field. He is a skilled phytoplankton taxonomist, studying diatom taxonomy with Drs. Patrick and Reimer (Academy of Natural Sciences, Philadelphia) and with Dr. JWG Lund FRS (Freshwater Biological Association, Ambleside, England). He has an extensive database on freshwater phytoplankton and periphyton and an extensive library of limnological and paleolimnological papers. His pioneering works in paleolimnology as a tool to detect trophic changes and assess historic levels of ‘paleo’ C production using fossil diatoms and cladocerans continues to be applied to on-going studies in Pacific Northwest lakes and reservoirs. His work on microbial food-webs as ‘drivers’ of C metabolism in oligotrophic lakes has resulted in 3 edited books and recognition as one of the world’s authorities on picoplankton and microbial food-webs in microbial ecology, notably the role of photosynthetic pico-cyanobacteria, their distribution, production, and role in whole-system C production. Recently his work has included dynamics of periphyton communities in the Upper Columbia Basin and in the NW Territories, utilizing key species as indicators of N or P limitation.
Selected Publications
Stockner, J.G., E. Ryden, P Hyenstrand. 2000. Cultural Oligotrophication: Causes and consequences to fisheries resources. Fisheries, 25: 7-14.
Stockner, J.G., C. Callieri, G. Cronberg. 2000. Picoplankton and other non-bloom forming cyanobacteria in lakes. P. 195-231. In: B.A. Whitton and M. Potts (eds.) The Ecology of Cyanobacteria: their diversity in time and space. Kluwer Academic Publications, Netherlands, 669 p.
Stockner, J.G. and K. I. Ashley. 2001. Salmon Nutrients: closing the circle. P. 1-17. In: J. G. Stockner (ed.) Nutrients in salmonid ecosystems: sustaining production and biodiversity. AFS symposium series No. 34, Bethesda, Maryland, 286p.
Stockner, J.G., A. Langston, D. Sebastian, and G. Wilson. 2005. The limnology of Williston Reservoir: British Columbia’s largest lacustrine Ecosystem. Water Qual. Res. J. Canada, 40: 28-50.

