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Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/6447
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dc.contributor.authorStevens, Michelle L.en_US
dc.contributor.authorRejmankova, Eliska.en_US
dc.creatorUniversity of California, Davis. Department of Botanyen_US
dc.creatorWetlands Research Program (U.S.)en_US
dc.date.accessioned2016-03-23T20:09:45Zen_US
dc.date.available2016-03-23T20:09:45Zen_US
dc.date.issued1995-10en_US
dc.identifier.govdocTechnical Report WRP-RE-11en_US
dc.identifier.urihttp://hdl.handle.net/11681/6447en_US
dc.descriptionTechnical Reporten_US
dc.description.abstractThis report provides monitoring data on the Cache Slough/Yolo Bypass mitigation area. The area was designed and constructed by the Corps of Engineers to function as a mitigation bank to provide mitigation for impacts to fish and wildlife habitats from the Sacramento River Bank Protection Project. The mitigation area includes approximately 9,000 lin ft (approximately 38 acres) of bypassed levee and a 138-acre interior basin area of primarily open water. The Cache Slough site is located west of the Sacramento River in the northern area of the Sacramento-San Joaquin Delta. This study was designed to monitor mitigation success in relation to project goals and objectives, in comparison to adjacent reference areas. Eight permanent transects with associated permanent vegetation quadrats were established around the perimeter of the open-water component of the mitigation area. Species composition, relative abundance, and frequency were measured. Results indicated that native vegetation along the levees is representative of the delta and includes the following: willows (Salix goodingii, S. lasiolepis), elderberry (Sambucus sp.), black walnut (Juglans hindsii), valley oak (Quercus lobata), interior live oak (Quercus wizliwenii), white alder (Alnus rhombifolia), cottonwood (Populus fremontii), hard-stem bulrush (Scirpus acutus), cattail (Typha spp.) and horse tail (Equisetum spp.). Prevalent non-native species include blackberry (Rubus spp.), artichoke (Cynara scolmus), and sweet fennel (Foeniculum vulgare). Eighty-seven percent of the site is dominated by non-native species. Aerial photographs were obtained and field truthed by walking around the site and delineating woody vegetation on the photograph. Results indicated that cover types on the site are open water (125.67 acres), riparian cover (13.45 acres), emergent wetland vegetation (9.54 acres), upland shrub and herbacious (19.11 acres), two upland islands (6.69 acres), upland road and parking (0.95 acre), riprap (0.48 acre), and cross levee (5.55 acres). Total acreage with cross levee is 181.44. Soil samples were collected and analyzed for calcium, magnesium, sodium, chlorine, sulfate, total nitrogen, percent organic matter, and soil texture. Sediment budget data were also collected to qualify sediment input and output on an average tidal cycle. Piezometers were installed to take measurements of surface and interstitial groundwater in both reference and mitigation sites. One-liter composite water samples were taken throughout the year where piezometers were located and analyzed for nutrients, including ammonium, nitrogen, and total phosphorus.en_US
dc.description.sponsorshipPrepared for U.S. Army Corps of Engineers, Washington, DC 20314-1000en_US
dc.description.tableofcontentsPreface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii Conversion Factors, Non-SI to SI Units of Measurement . . . . . . . . . . x 1-lntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2- Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Emergent Vegetation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Reference Site Transects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Woody Vegetation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Permanent Photo Stations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Aerial Photo Interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Soil Samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Sediment Budget . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Piezometers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Water Samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3-Results and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Aerial Photo Interpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Vegetation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Vegetation Data- 1993 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Emergent Vegetation Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Multivariate Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Woody Vegetation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Soils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Water Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Hydrology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Piezometer Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Sediment Budget . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 4--Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Mitigation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Reference Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 5- Lessons Learned and Recommendations . . . . . . . . . . . . . . . . . . . . . . 56 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Appendix A: Emergent Vegetation Sampling . . . . . . . . . . . . . . . . . . . . A1 Appendix B: Geology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B 1 Appendix C: Soils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C1 Appendix D: Natural Communities of California . . . . . . . . . . . . . . . . . D1 Appendix E: Species of Concern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E 1 Appendix F: Permanent Photo Stations . . . . . . . . . . . . . . . . . . . . . . . . . F1 SF 298en_US
dc.format.extent100 pagesen_US
dc.format.mediumPDFen_US
dc.language.isoen_USen_US
dc.publisherU.S. Army Engineer Waterways Experiment Stationen_US
dc.relationhttp://acwc.sdp.sirsi.net/client/en_US/search/asset/1040800en_US
dc.relation.ispartofseriesTechnical Report (Wetlands Research Program (U.S.)) ; no. Technical Report WRP-RE-11en_US
dc.rightsApproved for public release; distribution is unlimited.en_US
dc.sourceThe ERDC Library created this digital resource using one or more of the following: Zeta TS-0995, Zeutcehl OS 12000, HP HD Pro 42-in. map scanner, Epson flatbeden_US
dc.subjectHabitaten_US
dc.subjectWestern riparianen_US
dc.subjectMitigationen_US
dc.subjectWetlandsen_US
dc.subjectMonitoringen_US
dc.subjectEcosystem managementen_US
dc.subjectEnvironmental managementen_US
dc.subjectHabitat managementen_US
dc.subjectSacramento River (Calif.)en_US
dc.subjectEcologyen_US
dc.subjectBotanyen_US
dc.titleCache Slough/Yolo Bypass ecosystem monitoring study to determine wetland mitigation successen_US
dc.typeReporten_US
Appears in Collections:Technical Report

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