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University of Washington, School of Aquatic and Fishery Sciences & Department of Biology |
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206-227-9930, gholt (at) uw (dot) edu |
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Gordon Holtgrieve |
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Awards Best Student Presentation (2nd place), American Fisheries Society, WA-BC chapter general meeting, 2009 University of Washington Aquatic & Fishery Sciences, H. Mason Keeler Fellowship, 2008-2009 Environmental Protection Agency (EPA), Science to Achieve Results (STAR) Fellowship, 2004-2007 NSF Graduate Research Fellowship Program Honorable Mention, 2004 Achievement Rewards for College Scientists (ARCS) Foundation Fellowship, 2003-2006 University of Washington Graduate School Top Scholar Award, 2003 Stanford University Centennial Teaching Assistant Award, 2000 Stanford University Department of Biological Sciences Excellence in Teaching Award, 1999 |
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Lake Nerka, Alaska |
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Siem Reap River, Cambodia |
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Box 355020, Seattle, WA 98195 |
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Research I'm a recent graduate and current post-doc in Daniel Schindler’s lab at the University of Washington. My dissertation work examined linkages between terrestrial and aquatic ecosystems, focusing on the role of highly mobile organisms as vectors of nutrients. Most of my work focuses on stable isotopic methods to determine the effect spawning salmon have on stream ecosystem metabolism, as well as exclusion experiments to investigate the role of brown bears in transferring marine-derived nutrients from streams to riparian areas. I am actively developing Bayesian statistical models of aquatic ecosystem metabolism (BaMM, for Bayesian Metabolic Model). These models uses diel O2 concentration, water temperature, and irradiance data to estimate probability distributions of ecosystem metabolic rates such as gross primary productivity, community respiration, and air-water gas exchange. As a side project, I am investigating the applicability of oxygen isotopes (δ18O) of wine as a paleo-climate indicator using a 38 year time-series of white wine from the Pacific Northwest. Prior to joining the Schindler Lab, I received my undergraduate and master’s degrees in Earth Systems from Stanford University (B.S. 1999, M.S. 2001) where my research focused on the conservation of sensitive species in fragmented suburban landscapes. Research and recreational interests then took me to Hawaii where I worked with the labs of Peter Vitousek and Pamela Matson investigating variations in biogeochemical cycling of nitrogen along a mesic to wet precipitation gradient. |
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Publications Holtgrieve, G. W., D. E. Schindler, C. Gowell, C. P. Ruff, and P. J. Lisi. In review. Stream geomorphology regulates the ecosystem engineering and nutrient enrichment effects of Pacific salmon on benthic biota. Freshwater Biology. Holtgrieve, G. W. and D. E. Schindler. In review. Marine-derived nutrients, bioturbation, and ecosystem metabolism: reconsidering the role of salmon in streams. Ecology. Holtgrieve, G.W., D.E. Schindler, T.A. Branch, and Z.T. A’Mar. In press. Simultaneous quantification of aquatic ecosystem metabolism and re-aeration using a Bayesian statistical model of oxygen dynamics. Limnology and Oceanography. M.R. Baker, D.E. Schindler, G.W. Holtgrieve, and V.L. St. Louis. 2009. Bioaccumulation and transport of contaminants: migrating sockeye salmon as vectors of mercury. Environmental Science & Technology 43 (23): 8840–8846 . Moore, J. W., D. E. Schindler, J. L. Carter, J. Fox, J. Griffiths, and G. W. Holtgrieve. 2007. Biotic control of stream fluxes: spawning salmon drive nutrient and matter export. Ecology 88 (5): 1278-1291. Holtgrieve, G.W. 2006. Species account: Sudden oak death. In P.D. Boersma, S.H. Reichard, and A. van |