Schedule: 12:40 - Load presentations onto computer Part 1. Methods used to estimate aquatic metabolism (~12 minute presentations + 5 minutes for questions) 13:00 - Workshop introduction: Goals, questions, and a little data (Bob Hall) 13:17 - Estimating metabolic parameters from one- and two-station diel dissolved oxygen curves: Successes and challenges (Mike Grace) 13:34 - Estimating metabolism parameters and uncertainty: maximum likelihood approach with bootstrapping (Christopher Solomon, Matthew Van de Bogert, & Paul Hanson) 13:51 - Bayesian methods for aquatic ecosystem metabolism parameter estimation: current models and future directions (Gordon W. Holtgrieve & Daniel E. Schindler) 14:08 -Sampling more places less frequently: What increase in error are we to accept for better spatial coverage? (Jason Venkiteswaran) 14:25 - Revised techniques for estimating stream metabolism from oxygen concentrations: The effect of spatial heterogeneity (Peter Reichert, Urs Uehlinger, & Vicenç Acuña)
14:42 - Estimates of stream metabolism by modeling dissolved oxygen fate and transport in unsteady flow (Robert Payn) 15:00 - 15 minute break Part 2. Small group discussion and recommendations 15:15 - Break out into small groups for more focused discussions: 1. Measuring versus modeling K 2. Parameter uncertainty 3. Model structure and model validation 4. Others? 16:15 - Groups report recommendations; large group discussion 16:40 - Workshop summary: Recommendations and future directions (Erin Hotchkiss) 17:00 - Further discussion over pizza and beer at Il Vicino? | Date: 06 June 2010 Time: 13:00 - 17:00 Location: Peralta/Lamy, Santa Fe Conference Center RSVP to: Bob Hall (bhall@uwyo.edu) & Erin Hotchkiss (ehotchki@uwyo.edu) Workshop Description: There is a current increase in interest in calculating aquatic whole-ecosystem metabolism using inverse modeling approaches. In some cases it is possible to solve for more than just metabolism; reaeration can be estimated, which allows broad application of the method, but at a possible cost of higher uncertainty in metabolism estimates. This workshop will discuss methods, models, and assumptions behind inverse approaches to estimating aquatic ecosystem metabolism. Questions will include how to both calculate and minimize uncertainty on parameter estimates (i.e. photosynthesis, respiration, reaeration) and how many parameters can be estimated with low uncertainty given variation in diel oxygen or oxygen isotope data. We envision a session with a few short presentations addressing modeling of metabolism, followed by small or large group discussions on specific questions. The overall goal of the workshop will be to develop recommendations for modeling metabolism, including parameter estimation and uncertainty. Specific questions:
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