Wildlife Corridors for Flood Escape on the Yolo Bypass Wildlife Area
|Project Type||Non-mitigation||Location||38.56312° N, -121.63543° W Map|
|Project Area (Acres)||23.00||Last Updated||25 August 2017|
|Prop 1-Yr1-2015-016||SSJDC - Prop 1 Grant ID|
|Activity||Habitat||SubHabitat||Acres||Activity Status||Water Regime|
|Restoration||Seasonal Wetland||Grassland and associated wetland||3.00||Permitting||Unknown/Unspecified|
|Habitat||Acres Lost||Type of Loss|
|YBWA-Demonstration Planting Area||Proposed||0.60|
|YBWA-Wildlife Corridor North||Proposed||20.00|
|YBWA-Wildlife Corridor South||Proposed||3.00|
|Partner||Martha Ozonoff||Yolo Basin Foundation||Not applicable/Unknown|
|Partner||Corey Shake||Point Blue Conservation Science||Not applicable/Unknown|
|Agency Staff||Joanne Heraty||Yolo County Resource Conservation District||Not applicable/Unknown|
|Agency Staff||Heather Nichols||Yolo County Resource Conservation District||Not applicable/Unknown|
|Agency Staff||Jeanette Wrysinski||Yolo County Resource Conservation District||Not applicable/Unknown|
|Agency Staff||Jeffrey Stoddard||California Department of Fish and Wildlife||Not applicable/Unknown|
|Visit Date||Version||Site Name||Wetland Type||Index Score|
|Project not underway||Use strong partnerships during the contract period to implement restoration and educate and connect the public to restoration in the Delta||2017-03-14|
|Project not underway||Increased abundance and diversity of wildlife and pollinators throughout the year||2017-03-14|
|Project not underway||Increased use of floodway-escape corridor area by wildlife during flood events||2017-03-14|
|Project not underway||22 acres of year-round habitat and 0.5-acre of publicly accessible demonstration planting established||2017-03-04|
|The Yolo Bypass Wildlife Area (YBWA) is owned and managed by the California Department of Fish and Wildlife (CDFW) to restore and manage a variety of wildlife habitats in the Yolo Basin, a natural basin in the north Sacramento-San Joaquin River Delta. The 16,770-acre YBWA is part of the Yolo Bypass flood control channel that protects Sacramento and other cities from flooding, and is also a refuge for fish, waterfowl, shorebirds and wading birds, Neotropical migrants, raptors, invertebrates, reptiles, amphibians and bats. Wildlife in the YBWA is often stranded in flood events. As flood waters rise from east to west, wildlife including deer, furbearers and ground nesting birds lack adequate cover to move out of lower areas or to escape aerial predation. CDFW staff report deer climbing trees in an attempt to survive. Projects to restore wildlife habitat adjacent to and compatible with the agriculture operations in the Bypass have not been previously attempted, but are necessary to achieve Delta habitat restoration goals. This project creates two habitat corridors and a demonstration planting in the Yolo Bypass Wildlife Area to provide wildlife flood escape cover and enhance year round habitat for a variety of migratory birds, pollinators and other wildlife, and will be the first partner-based effort to integrate wildlife habitat with the ongoing agricultural operations on the property. The regional community will be engaged with organized field days where high school students and community volunteers learn about restoration and plant native plants in the corridor areas. These events will bring the public to parts of the bypass that are typically inaccessible, expanding their awareness and understanding of the area and its importance for flood safety, agriculture and wildlife. Multi-benefit project goals are: 1) Create wildlife habitat on the Yolo Bypass Wildlife Area (YBWA) to solve wildlife flood-safety problems and enhance year round habitat; 2) Implement restoration through regional partnerships, provide educational opportunities, and create public connections to habitat restoration in the Delta.|
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How to Use the Habitat Development Curve
Habitat Development Curves (HDCs) are used to determine the developmental status and trajectory of on-the-ground projects to create, restore, or enhance California wetland and stream habitats. Each HDC is based on assessments of habitat condition for different age areas of one habitat type that in aggregate represent the full spectrum of habitat development. The assessments of condition are provided by expert applications of the California Rapid Assessment Method (CRAM). Visit the CRAM website for more information about CRAM.
For each HDC, reference condition is represented by areas of a habitat that consistently get very high CRAM scores, have not been subject to disruptive management practices, and exist within landscapes that are protected and managed for their natural conditions. The horizontal lines intersecting the top of an HDC represent the mean CRAM score and standard deviation of scores for 25 qualifying reference areas.
The age of a project is estimated as the elapsed time in years between the groundwork end date for the project and the date of the CRAM assessment. To add or update a groundwork end date, use the Project Events form in Project Tracker (ptrack.ecoatlas.org). The minimum age in years of a non-project area, including any natural reference area, is estimated from all available local information, including historical maps and imagery, historical written accounts, and place-specific scientific studies of habitat development.
An HDC can be used to address the following questions:
- At what time in the future will the area of assessed habitat achieve the reference condition or other milestones in habitat development? The HDC can answer this question if the CRAM score for the assessed area is within the confidence interval of the HDC. The answer is the time in years along the HDC between the current age of the assessed area and the future date corresponding to the intersection of the HDC and the reference condition or other milestone.
- Is the area of assessed habitat likely to develop faster, slower, or at the same pace as most other areas of the same habitat type? The habitat area is likely to develop faster, slower, or at the same pace if the CRAM score for the area is above, below, or within the confidence interval of the HDC, respectively.
- What can be done to improve the condition of the habitat area or to increase its rate of development? HDCs by themselves cannot answer this question. Possible answers can be inferred by the following analysis that involves HDCs:
- Examine the HDC for each of the four CRAM Attributes;
- Identify the Attribute(s) scoring below the HDC;
- For any low-scoring Attribute, examine the component Metric Scores (note: the Metric Scores for any public CRAM assessment in the CRAM database can be obtained through EcoAtlas);
- Assume the low score of an Attribute is due to its low-scoring Metric(s);
- Consider modifying the design or management of the habitat area in ways that will sustainably increase its score(s) for the low-scoring Metric(s).
For more information about CRAM Attributes and Metrics, including their scientific rationale, see the CRAM Manual.