Supporting Material A Methodology for Ecosystem-Scale Modeling of Selenium (Ecosystem-Scale Modeling of Selenium) Theresa S. Presser*† and Samuel N. Luoma†‡ †U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025 ‡John Muir Institute of the Environment, University of California, Davis *To whom correspondence may be addressed:
[email protected] Theresa S. Presser U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025
[email protected] 650-329-4512 FAX 650-329-4538 Samuel N. Luoma U.S. Geological Survey, 345 Middlefield Road, Menlo Park, California 94025
[email protected] 650-329-4481 FAX 650-329-4545 John Muir Institute of the Environment, University of California, Davis, California 95616
[email protected] 530-754-9141 1 ECOSYSTEM-SCALE SELENIUM MODELING: DATA AND REFERENCES Compilation and Calculation of Kds and TTFs Ratios derived here employ dry weight (dw) for media (particulate material and tissue). Datasets are temporally and spatially matched from 52 field studies that included water-column Se concentrations and particulate Se concentrations (Supplemental Table A). The Kds typical of a variety of ecosystems (e.g., ponds, rivers, estuaries) are given. If a range was reported, a median is listed; if a series of data was reported, a mean is listed. A compilation of experimental data for invertebrate physiological parameters allowed calculation of kinetic TTFs for invertebrates (particulate to invertebrate) (Supplemental Table B). Additional calculated TTFs from denoted field studies are shown in Supplemental Table C. A compilation of experimental data for fish physiological parameters allowed calculation of kinetic TTFs for fish (invertebrate to fish) (Supplemental Table D).