Sacramento River Ecological Indicators Pilot Study
Prepared for the Nature Conservancy Sacramento River Project by Stillwater Sciences and William Rainey, Elizabeth Pierson, and Chris Corben in consultation with Mary Power, March 2003
We recommend Acrobat Reader 5, some documents do not display properly in earlier versions.

Report Text (728 k)

Figure 2-1. Project study area along Sacramento River.
Figure 2-2. Hydrology of the Sacramento River at Red Bluff (USGS gauge 11377100) from water year 2002 to December 16, 2002.
Figure 2-3. Predicted form and function of large meandering alluvial rivers.
Figure 2-4. Secondary flow patterns in rivers.
Figure 3-1. Bat sampling locations at the Koehnan orchard site.
Figure 3-2. Bat sampling locations at the La Barranca orchard site.
Figure 3-3. Bat sampling locations at the Phelan mature forest site, and the 1991 and 2002 restoration sites.
Figure 3-4. Bat sampling locations at the Woodson mature forest site.
Figure 3-5. Detector deployment and setup example. (a) The Koehnan mainstem Sacramento River site setup. (b) Close up of detector components.
Figure 3-6. Number of acoustic files for western mastiff bat at study sites in core, river, and backwater sampling locations.
Figure 3-7. Number of acoustic files for hoary bat at study sites in core, river, and backwater sampling locations.
Figure 3-8. Number of acoustic files for 40-kHz Myotis at study sites in core, river, and backwater sampling locations.
Figure 3-9. Total number of acoustic files by taxonomic category at the Koehnan backwater sampling location.
Figure 3-10. Total number of acoustic files per night of all bats at core sampling locations.
Figure 3-11. File counts per night of silver-haired bat at core sampling locations.
Figure 3-12. File counts per night of big brown bat at core sampling locations.
Figure 3-13. File counts per night of Mexican free-tailed bat at core sampling locations.
Figure 3-14. File counts per night of 25-kHz bat phonotype at core sampling locations.
Figure 3-15. File counts per night of red bat at core sampling locations.
Figure 3-16. File counts per night of hoary bat at core sampling locations.
Figure 3-17. File counts per night of 40-kHz Myotis phonotype at core sampling locations.
Figure 3-18. File counts per night of 50-kHz Myotis phonotype at core sampling locations.
Figure 3-19. File counts per night of mastiff bat at core sampling locations.
Figure 3-20. Total number of acoustic files per night of all bats at study sites and sampling locations.
Figure 3-21. Total number of acoustic files per night of hoary bat at study sites and sampling locations.
Figure 3-22. Total number of acoustic files per night of 50-kHz Myotis phonotype at study sites and
sampling locations.
Figure 3-23. Records of 50-kHz Myotis phonotype at La Barranca sampling locations during the first
two weeks of sampling (September 14-27).
Figure 3-24. Records of 40-kHz Myotis phonotype at La Barranca sampling locations during the first
two weeks of sampling (September 14-27).
Figure 3-25. Total number of acoustic files per night of mastiff bat at study sites and sampling locations.
Figure 3-26. Percentage of nights with detections of mastiff bat.
Figure 3-27a. Distribution of estimated time since emergence of mastiff bats at Koehnan and La Barranca sampling locations (orchard sites).
Figure 3-27b. Distribution of estimated time since emergence of mastiff bats at Phelan and Woodson sampling locations (forest sites).
Figure 3-28. Mean number of acoustic files per sampling period of all bats for two sampling periods at the 1991 and 2002 restoration sites.
Figure 3-29. Number of acoustic files of all bats at the 2002 and 1991 restoration sites and at the Phelan core sampling location.
Figure 3-30. Number of acoustic files by species at the 2002 and 1991 restoration sites.
Figure 3-31. Mean number of acoustic files during first 45 minutes after sunset for all species at study sites and sampling locations.
Figure 3-32. Distribution of acoustic files since sunset for red bats at the 2002 and 1991 restoration sites and Phelan core sampling location.
Figure 4-1. (a) Substrate composition and (b) facies mapping data along the five transects at the La Barranca point bar.
Figure 4-2. (a) Substrate composition and (b) facies mapping data along the five transects at the Phelan point bar.
Figure 4-3. (a) Substrate composition and (b) facies mapping data along the five transects at the Koehnan point bar.
Figure 4-4. La Barranca site map with velocity and depth profiles for the five transects along the point bar.
Figure 4-5. Phelan site map with velocity and depth profiles for the five transects along the point bar.
Figure 4-6. Koehnan site map with velocity and depth profiles for the five transects along the point bar.
Figure 4-7. Invertebrate abundance (all taxa) captured at study sites (A is the upstream-most transect, E is downstream-most transect).
Figure 4-8. Invertebrate abundance (all taxa) captured at study sites (corrected for volume of flow sampled) and velocity at sampling locations (A is the upstream-most transect, E is
downstream-most transect).
Figure 4-9. Invertebrate abundance (all taxa) captured at study sites, with La Barranca Transect E (no flow) removed.
Figure 4-10. Dominant taxa captured at study sites.
Figure 4-11. First- and second-most dominant taxa of invertebrates (excluding those taxa not expected
in the drift, such as Oligochaeta, Hemiptera, Nematoda, and Collembola) collected at each transect from each site.
Figure 4-12. Ephemeroptera abundance at study sites without La Barranca Transect E (no flow).
Figure 4-13. Diptera abundance at study sites without La Barranca Transect E (no flow).
Figure 4-14. Invertebrate abundance (all taxa) at Cove Net 1 (SC1) and neighboring transects at the La Barranca site.
Figure 4-15. Invertebrate abundance (all taxa) at Cove Nets 2 and 3 (SC2 and SC3) and neighboring transects at the La Barranca site.
Figure 4-16. Invertebrate abundance (specific taxa) at Cove Net 1 (SC1) and neighboring transects at the La Barranca site.
Figure 4-17. Invertebrate abundance (specific taxa) at Cove Nets 2 and 3 (SC2 and SC3) and neighboring transects at the La Barranca site.
Figure 4-18. Cove habitat sampling locations at the La Barranca point bar.
Figure 4-19. Invertebrate abundance (all taxa) at Cove Nets 1 and 2 (SC1 and SC2) and neighboring transects at the Phelan point bar.
Figure 4-20. Invertebrate abundance (specific taxa) at Cove Nets 1 and 2 (SC1 and SC2) and neighboring transects at the Phelan point bar.
Figure 4-21. Cove habitat sampling locations at the Phelan point bar.
Figure 4-22. Cove habitat sampling location at the Koehnan point bar.
Figure 4-23. Invertebrate abundance (all taxa) at Cove Net 8 (SC8) and neighboring transects at the Koehnan point bar.
Figure 4-24. Invertebrate abundance (specific taxa) at Cove Net 8 (SC8) and neighboring transects at the Koehnan point bar.
Figure 4-25. Invertebrate abundance (specific taxa) at the Phelan secondary channel sampling location, most productive mainstem transect, and closest neighboring transect.
Figure 4-26. Invertebrate abundance (specfic taxa) at the Koehnan secondary channel sampling site and most productive mainstem transect.
Figure 4-27. Invertebrate abundance (specific taxa) at the Koehnan secondary channel and main channel sampling sites.
Figure 4-28. Locations of secondary channel and main channel sampling sites at the Koehnan point bar.
Figure 5-1. Stable isotope signatures for filter-feeders (hydropsychids and blackflies) for (a) nitrogen and (b) carbon.
Figure 5-2. Dual isotope diagram for filter-feeders (hydropsychids and blackflies).
Figure 5-3. Stable isotope signatures for grazers (mayflies) for (a) nitrogen and (b) carbon.
Figure 5-4. Dual isotope diagram for grazers (mayflies).
Figure 5-5. Stable isotope signatures for chironomids for (a) nitrogen and (b) carbon.
Figure 5-6. Stable isotope signatures for willow for (a) nitrogen and (b) carbon.
Figure 5-7. Stable isotope signatures for aquatic vegetation and algae for (a) nitrogen and (b) carbon.