Demonstration slides of ATLSS output proposed to be used in Restudy Scenario Evaluation


The below represent an initial set of images, for demonstration purposes only, of the types of output that can be produced from the ATLSS project group at The Institute for Environmental Modeling, University of Tennessee, to aid in evaluation of hydrologic scenarios being produced for the Restudy. These initial images are not meant to be used as part of the restudy analysis, but merely to illustrate some of the capabilities of ATLSS. All comparisons are of Alt-5 with C-base. Most of the images here are at a grid resolution of 2 miles by 2 miles, which is that for which hydrology is being produced by District hydrologists. However, we expect that most of the restudy images we produce will be at a finer resolution of 500m x 500m. There are four Levels of analysis included below. For more details on the proposed outputs for the Restudy, see the below text file.

Figures: All figures show the area of the Water Management Model with tan shading. Black lines indicate the boundaries of the management units of the major public areas. Shading of all maps except the difference maps (e.g., Alt5-Cbase) range from blue for the lowest levels (e.g., shortest hydroperiods, lowest breeding potential) through yellow to red for the highest levels. Difference maps (e.g., Alt5-Cbase) use the same color scale as described above for positive differences (i.e., Alt-5 greater than Cbase). For negative differences, white indicates small differences, shading toward deep purple to indicate large negative differences (e.g., Alt-5 values much smaller than Cbase).


Proposed Components of ATLSS Model Outputs for Use in Evaluating Ecological Impacts of Alternative Water Management Scenarios(text file)


Level 1 Analyses - Use Water Management Model Output only, No Vegetation Information, No Pseudotopography, No Individual-based Models

Comparisons of Hydroperiods from Water Management Model (2 x 2 mile cells)

Figure 1. 25 Year Average

Figure 2. 1983 - Single Wet Year

Figure 3. 1986 - Single Average Year

Figure 4. 1989 - Single Dry Year

Comparisons of Water Depths (Ponding) from Water Management Model (2 x 2 mile cells)

Figure 5. 25 Year Average

Figure 6. 1983 - Single Wet Year

Figure 7. 1986 - Single Average Year

Figure 8. 1989 - Single Dry Year

Table1. Table of comparisons of mean ponding, mean hydroperiod, mean maximum/minimum pulse, and mean maximum/minimum ponding broken down by subregions in South Florida.

Breeding Potential Index for Wading Birds (WBI) (based on length of hydroperiod and depth during drydown)

Figure 9. Location of Current and Historic Wading Bird Rookeries Indicated by Circles with 10-km radius

Figure 10. 25 Year Average

Figure 11. 1983 - Single Wet Year

Figure 12. 1986 - Single Average Year

Figure 13. 1989 - Single Dry Year

Breeding Potential Index for White-tailed Deer

Figure 14. 25 Year Average

Figure 15. 1983 - Single Wet Year

Figure 16. 1986 - Single Average Year

Figure 17. 1989 - Single Dry Year


Level 2 Analyses - Use Water Management Model Output in Combination with Vegetation Map

Breeding Potential Index for Cape Sable Seaside Sparrow

Brief Model Description

Figure 18. 1983 - Single Wet Year

Figure 19. 1986 - Single Average Year

Figure 20. 1989 - Single Dry Year


Level 3 Analyses - Use Pseudotopography-adjusted Water in Combination with Vegetation Map

Table 2. Hydroperiod Changes in Each Vegetation Type in Each Management Unit: Analysis of 1969, an average year.Very wide text

Table 3. Hydroperiod Changes in Each Vegetation Type in Each Management Unit: Analysis of 1989, a dry year.Very wide text

Table 4. Hydroperiod Changes in Each Vegetation Type in Each Management Unit: Analysis of Average Hydroperiod over 1980-1989.Very wide text


Level 4 Analyses - Fully Integrated ATLSS Model Components

Fish Availability to Wading Birds in WCA-3A using Integrated Fish and Lower Trophic Level Models

Figure 21. 10-year time series for fish dynamics in WCA-3A. First row shows average water depth across WCA-3A. Second row shows fish available to wading birds (fish biomass in areas with 10-30 cm water depth). The first column is Alt-5, the last is C-base and the center is the difference between Alt-5 and C-base.

Figure 21. Postscript version (45K)

Figure 22. Yearly averages for 1970-1974 rainfall data of water depth across WCA-3A. The first column is Alt-5 and the last is C-base. The middle is the difference between Alt-5 and C-base. Purple color indicates that C-base has deeper water than Alt-5. White indicates no significant difference. Red color indicates that Alt-5 has deeper water.

Figure 22. Postscript version (1923K)

Figure 23. Yearly averages of fish available to wading birds (fish biomass in areas with 10-30 cm water depth). Same color scheme and layout as Figure 22.

Figure 23. Postscript version (1923K)

Figure 24. Expanded view of data in Figure 21 showing 5-day averages of water depth and fish biomass available for wading birds, during the breeding season, for rainfall data from 1970 and 1971. The dashed line is fish biomass, and the solid line is water depth.

Figure 24. Postscript version (24K)



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