From: Sharlynn Sweeney [mailto:[log in to unmask]]
Sent: Tuesday, October 19, 2010 3:23 PM
To: Bill White; Boyd,Mary C; Charles Carton; Steinway-Rodkin,Christine Mich; Coenen,Danny; Rothrock,Heather N; Jenet Dooley; King,Sean A; Odonoughue,Patric; Sindelar,Hugo R,IV; Hoyord,Torren N; Burkett,Valerie A; IGERT-AMW3; [log in to unmask]; Mckee,Kathleen A; Cohen,Matthew J
Subject: Re: W3 Seminar WEDNESDAY - Adaptive Spatially-Distributed Phosphorus Water-Quality Modeling...Everglades

This Wednesday, Oct 20, 11:45-12:30 in Phelps Lab

Adaptive Spatially-Distributed Phosphorus Water-Quality Modeling for the Complex Hydrodynamic Conditions of the Southern Everglades

Stuart Muller, Ph.D.
Postdoctoral Associate in Agricultural and Biological Engineering, University of Florida


The Everglades region known as the Southern Inland and Coastal Systems is an important area that supports numerous endangered species and plays a crucial role in regulating water-quality conditions in Florida Bay.  Taylor Slough is a major feature of this region that represents the primary surface-water pathway for freshwater inputs to Florida Bay, and is therefore subject to intensive flow management under the Comprehensive Everglades Restoration Plan.  However, a suitable model of phosphorus water-quality conditions in these hydrodynamically complex and oligotrophic wetlands has been lacking, and the consequences of such management remain unclear.  A flexible phosphorus water-quality model was therefore developed and tested as an exploratory management tool for the region.  The complexity of local hydrodynamics required that a spatially-distributed hydrodynamic model be used to capture flow and transport under unsteady, variable-density conditions.  A newly developed, user-definable biogeochemistry component was then coupled with the hydrodynamic model, and the integrated water-quality tool tested for the region.  The flexibility of the biogeochemical component permitted testing of multiple conceptual water-quality models of increasing complexity.  This novel versatility in a water-quality model driven by mechanistic hydrodynamics permitted comparison between simple models and more complex mechanistic approaches. Since model uncertainty, sensitivity, and versatility are all contingent on the choice of model complexity, the freedom to experiment in this way offers valuable opportunities to explore the gains and losses in model performance introduced by additional complexity.

Seminar series website with schedule and recordings for Fall 2010 and past semesters:
Sharlynn Sweeney, PhD
Center for Environmental Policy and
H.T. Odum Center for Wetlands
University of Florida