2008 Annual Monitoring Report (pdf 10.9MB) - Bolsa Chica ...

Bolsa Chica Lowlands Restoration Monitoring
2008 Annual Report
Figure 1-16. Avian survey zones........................................................................................................... 73
Figure 1-17. Avian abundance by guild at Bolsa Chica during 2008 surveys ...................................... 80
Figure 1-18. Avian abundance by habitat type at Bolsa Chica during 2008 surveys............................ 84
Figure 1-19. Belding’s Savannah sparrow territories (March and April 2008)..................................... 89
Figure 2-1. Predicted flood shoal area................................................................................................. 100
Figure 2-2. Full Tidal Basin inlet bathymetry ..................................................................................... 102
Figure 2-3. Full Tidal Basin accretion and erosion comparisons between surveys............................. 103
Figure 2-4. Net sediment accretion rate per month ............................................................................. 104
Figure 2-5a. Minimum daily tidal elevations in the Bolsa Chica Full Tidal Basin (FTB) and at the Los
Angeles Outer Harbor (LAOH) between January 20, 2007 and December 31, 2008 ................... 109
Figure 2-5b. Daily differences in lower low tide elevations between the FTB and the LAOH .......... 109
Figure 2-6. Maximum spring low tide muting..................................................................................... 111
Figure 2-7. Example comparison of recorded tides (February 2007) at FTB with the ocean tides
(LAOH).......................................................................................................................................... 112
Figure 2-8. Location map .................................................................................................................... 115
Figure 2-9. Beach profile data used in CCSTWS-OC......................................................................... 117
Figure 2-10. Beach profile survey operations...................................................................................... 119
Figure 2-11. May 2008 and October 2008 beach widths..................................................................... 124
Figure 2-12. Long-Term beach width changes, May 1963 to May 2008............................................ 125
Figure 2-13. Bolsa Chica monitoring period shoreline changes, October 2005 to October 2008....... 126
Figure 2-14. Long-Term subaerial volume changes, May 1963 to October 2008 .............................. 127
Figure 2-15. Bolsa Chica monitoring period subaerial volume changes, Oct. 2005 to Oct. 2008 ...... 128
Figure 2-16. Long-Term shorezone volume changes, May 1963 to October 2008............................. 129
Figure 2-17. Twelve -Month average berm width at Corps Station 247+88....................................... 131
Figure 2-18. Twelve -Month average berm width at Corps Station 307+88....................................... 131
Figure 2-19. Twelve-Month average berm width at Corps Station 424+44........................................ 132
Figure 2-20. Shoreline changes at upcoast transects, October 2005 to October 2008 ........................ 133
Figure 2-21. Shoreline changes at downdrift transects, October 2005 to October 2008..................... 133
Figure 2-22. Subaerial volume changes at upcoast transects, October 2005 to October 2008............ 134
Figure 2-23. Subaerial volume changes at downcoast transects, October 2005 to October 2008....... 134
LIST OF TABLES
Table 1-1. Area of habitats within the Bolsa Chica study area (May 2008). ........................................ 21
Table 1-2. Vegetation transect monitoring results (2008)..................................................................... 30
Table 1-3. Soils monitoring results (September 2008)........................................................................... 35
Table 1-4. Soil grain size analysis results (September 2008)................................................................ 36
Table 1-5. Summary of fish abundance in the Full Tidal Basin in 2008............................................... 42
Table 1-6. Summary of fish mass in the Full Tidal Basin in 2008........................................................ 44
Table 1-7. Water quality measurements taken during quarterly fish sampling in 2008........................ 48
Table 1-8. Summary of fish abundance in the Muted Tidal Basins in 2008. ........................................ 49
Table 1-9. Summary of fish mass in the Muted Tidal Basins in 2008. ................................................. 50
Table 1-10. Summary of fish abundance in the Muted Pocket Marsh in 2008. .................................... 50
Table 1-11. Summary of fish mass in the Muted Pocket Marsh in 2008. ............................................. 51
Table 1-12. Minimum and maximum standard length of all fish species captured by quarter at all
station in 2008.................................................................................................................................. 52
Merkel & Associates, Inc.
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