Whooping Crane Migrational Habitat Use Draft ‎(2)‎

• File Number: 8461.100
• Description: Adaptive Management Workgroup
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 8/6/2008
• Author: Shay Howlin, Clayton Derby, Dale Strickland, Western Ecosystems Technology, Inc.
• Title: Whooping Crane Migrational Habitat Use Draft
• Water Supply Pro - Doc Type: Report/Study

Figure 11. Known movements of crane group 06A-03 across the three days of observation. ..... 30
Figure 12. Known movements of crane group 06A-05 across the two days of observation. ....... 30
Figure 13. Known movements of crane group 06A-01 and 02 across the two days of observation.
........................................................................................................................................... 30
Figure 14. Known movements of crane group 06B-22 across the thirteen days of observation.. 30
Figure 15. Close up of known movements of crane group 06B-22 across the thirteen days of
observation . ....................................................................................................................... 30
Figure 16. Trend in the index of use (closed circles and solid line) and the adjusted index of use
(open circles and dashed line) through the Cooperative Agreement time period ............. 31
Figure 17. Trend in the peak winter count of the Aransas-Wood Buffalo population (closed
circles and solid line) and the adjusted number of crane groups (open circles and dashed
line) in the study area through the Cooperative Agreement time period .......................... 32
Figure 18. Predicted relative probability of selection of the study area by whooping crane groups
based on the model for study area selection of land cover. Dark red areas represent areas
with high probability of use while light red areas represent areas with low probability of
use . .................................................................................................................................... 33
Figure 19. Predicted relative probability of in-channel selection by whooping crane groups based
on the model for in-channel selection of land cover. Dark red areas represent areas with
high probability of use while light red areas represent areas with low probability of use 34
Figure 20. Predicted quadratic relationship between the relative probability of use and distance to
shrub/forest (meters) based on the resource selection function for study area selection of
land cover for in-channel observations ............................................................................. 35
Figure 21. Predicted quadratic relationship between the relative probability of use and distance to
transportation (meters) based on the resource selection function based on the final
resource selection function for local area selection of land cover for in-channel
observations . ..................................................................................................................... 35
Figure 22. Predicted quadratic relationship between the relative probability of use and
obstruction to obstruction width (meters) based on the resource selection function for
characteristics measured on the ground . ........................................................................... 36
Figure 23. Predicted quadratic relationship between the relative probability of use and wetted
width (meters) based on the resource selection function for study area selection............ 36
Figure 24. Predicted relative probability of selection of the in-channel area by whooping crane
groups at low flow (250cfs at Kearney, NE) based on the model for selection of flow
dependent characteristics. Dark red areas represent areas with high probability of use
while light red areas represent areas with low probability of use. Available data for this
analysis only extended from river mile 157 to river mile 239 .......................................... 37
Figure 25. Predicted relative probability of selection of the in-channel area by whooping crane
groups at medium flow (350cfs at Kearney, NE) based on the model for selection of flow
dependent characteristics. Dark red areas represent areas with high probability of use
while light red areas represent areas with low probability of use. Available data for this
analysis only extended from river mile 157 to river mile 239 .......................................... 38
Figure 26. Predicted relative probability of selection of the in-channel area by whooping crane
groups at high flow (786cfs at Kearney, NE) based on the model for selection of flow
dependent characteristics. Dark red areas represent areas with high probability of use
while light red areas represent areas with low probability of use. Available data for this
analysis only extended from river mile 157 to river mile 239 .......................................... 39
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