Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013...
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![Page 1: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/1.jpg)
Development of a Regional Scale Tool to Assess Riparian
Integrity in Austin, Texas
Society for Ecological Restoration, Texas Chapter & Texas Riparian Association
November 2, 2013 Aaron Richter
City of Austin, Watershed Protection Department
![Page 2: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/2.jpg)
Outline Index of Riparian Integrity City of Austin Riparian Assessments Building the Model
• Integrity Indicator• Variables• Spatial Component
Model Selection Model Results Questions
![Page 3: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/3.jpg)
Index of Riparian Integrity (IRI)Macro-scale model based on aerial photography and land use data to assess and quantify the riparian integrity in Austin, TX
![Page 4: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/4.jpg)
City of Austin Assessment and Prioritization of Riparian Areas
• Assessment includes water quality, sediment stability, and riparian vegetation scores
• Assessment performed at one site for an entire reach
![Page 5: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/5.jpg)
Modely = XEnvironmental Integrity Indicator
Weighting MatrixError
Explanatory Variables: Landscape Values
![Page 6: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/6.jpg)
y = XEnvironmental Integrity Indicator
ModelIndex
![Page 7: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/7.jpg)
Modely = XExplanatory Variables: Landscape Values
![Page 8: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/8.jpg)
Aerial Photography
![Page 9: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/9.jpg)
LITTLE BARTON CREEK
![Page 10: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/10.jpg)
LITTLE BARTON CREEK
![Page 11: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/11.jpg)
LITTLE BARTON CREEK
![Page 12: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/12.jpg)
LITTLE BARTON CREEK
![Page 13: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/13.jpg)
LITTLE BARTON CREEK
Robust Vegetation
Sparse Vegetation Shadow Impervious Cover
Woody VegetationWater
![Page 14: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/14.jpg)
LITTLE BARTON CREEK
Multi Family
Single Family
Community Agriculture/Undev
Manufacturing Utilities/Roads
Office Park/Preserve
Commercial
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LITTLE BARTON CREEK
![Page 16: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/16.jpg)
LITTLE BARTON CREEK
![Page 17: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/17.jpg)
Modely = XWeighting Matrix
![Page 18: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/18.jpg)
LITTLE BARTON CREEKLBA1 LBA2 LBA3
LBA1 0 d12-1 d13
-1
LBA2 0 0 d23-1
LBA3 0 0 0
LBA1
LBA2
LBA3
![Page 19: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/19.jpg)
Model Selection Single variable of most significance was
Woody Vegetation in the 50ft buffer in small drainage areas (64-320 acres).
General Linear Models were compared via BIC, Adjusted R2
Multicollinearity and model diagnostics were compared for top models
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Model Parameters50 ft. Buffer 400 ft. Buffer
Small Medium Large Small Medium Large
Impervious Cover
Sparse Vegetation
Single Family Residential
Robust Vegetation
Woody Vegetation
Residential: Duplex
Sparse Vegetation
Roads
Woody Vegetation
Apartments
Single Family Residential
*Small = 64-320acres, Medium = 320-640acres, Large = >640acres
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Poor [25-37]
Marginal [38-50]
No Score
Very Good [76-87]
Good [63-75]
Fair [51-62]
![Page 22: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/22.jpg)
Poor [25-37]Buttermilk Creek
![Page 23: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/23.jpg)
Fair [51-62]Williamson Creek
![Page 24: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/24.jpg)
Good [63-75]Shoal Creek
![Page 25: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/25.jpg)
Very Good [76-87]Onion Creek
![Page 26: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/26.jpg)
Very Good [76-87]Bee Creek
![Page 27: Society for Ecological Restoration, Texas Chapter & Texas Riparian Association November 2, 2013 Aaron Richter City of Austin, Watershed Protection Department.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649e9d5503460f94b9e4c7/html5/thumbnails/27.jpg)
Acknowledgements Mateo Scoggins and Surface Water Team
• City of Austin, Environmental Resource Mgmt.
Jon Meade and Kathryn Murray• City of Austin, Policy and Planning
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Questions?