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

List of Tables
Table 1. Number of decoys placed in the study area for each survey season and strata. Decoys in
the river strata were placed in the wetted channel, and decoys in the return strata were
placed within the entire study area .................................................................................... 20
Table 2. Land cover variables derived from the 19981and cover/use BOR GIS layer . ............... 21
Table 3. Habitat variables measured on the ground at used and a sample of decoy locations. .... 22
Table 4. Flow dependent habitat variables obtained from measured profiles and HECRAS
modeling . ............................................. ............................................................................. 22
Table 5. Number of observations of crane groups by stratum and by source during the
Cooperative Agreement period, 2001-2006 ...................................................................... 23
Table 6. Number of observations of crane group locations in each land cover category, during the
Cooperative Agreement period, 2001-2006. Land cover categories were amalgamated
from the vegetation classes in the Bureau of Reclamation (BOR) land use/cover GIS
based on 1998 photography (USBOR 2000), see text for exact descriprion of BOR
vegetation classes in each land cover category ................................................................. 23
Table 7. Predicted probability of detection totaled and averaged across all flights flown during a
survey season . ................................................................................................................... 24
Table 8. Observed number and calculated indices of use for whooping crane groups during the
Cooperative Agreement period 2001-06 ........................................................................... 24
Table 9. Percentage of time (95% confidence interval) whooping crane groups engaged in
diurnal activities by season and for both seasons combined ............................................. 25
Table 10. Study area, channel, and upland means and 95% confidence intervals for the land
cover variables. Distance variables were measured in meters. There were 58 use sites in
the wetted channel and 14 use sites in the upland obtained through the systematic aerial
flights . ......... ...................................................................................................................... 25
Table 11. Means and 95% confidence intervals for the habitat parameters measured on the
ground at wetted channel use locations, metric and English units . .................................. 26
Table 12. Means and 95% confidence intervals for flow dependent habitat parameters, metric
and English units ............................................................................................................... 26
List of Figures
Figure 1. Whooping crane group use locations in the Cooperative Agreement study area from
2001 to 2006 . .................................................................................................................... 27
Figure 2. Whooping crane group use locations located through the systematic sampling in the
Cooperative Agreement study area from 2001 to 2006 . ................................................... 28
Figure 3. Mean predicted probability of detection averaged across all flights flown during a
survey season . ................................................................................................................... 29
Figure 4. Known movements of crane group 0 1 A-03 across the one day of observation............ 30
Figure 5. Known movements of crane group 02A-01 across the five days of observation.......... 30
Figure 6. Known movements of crane group 02B-40 across the six days of observation............ 30
Figure 7. Known movements of crane group 02B-41 across the two days of observation. ......... 30
Figure 8. Known movements of crane group 02B-42 across the seven days of observation. ...... 30
Figure 9. Known movements of crane group 02B-43 across the two days of observation. ......... 30
Figure 10. Known movements of crane group 05A-02 across the four days of observation. ...... 30
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