. The ecology of Tijuana Estuary, California : a national estuarine research reserve . Figure The 20-acre experimental marsh is the largest component of the first phase of the Tidal Restoration Plan. The importance of tidal creek networks will be tested by com- paring ecosystem development in areas with and without such topographic heterogeneity. The 495-Acre Project It is expected that the 495-acre excavation (Figure ) will be implemented over two or more decades, since the project will be costly and funds are not currently available for the work. An innovative, modular approach
. The ecology of Tijuana Estuary, California : a national estuarine research reserve . Figure The 20-acre experimental marsh is the largest component of the first phase of the Tidal Restoration Plan. The importance of tidal creek networks will be tested by com- paring ecosystem development in areas with and without such topographic heterogeneity. The 495-Acre Project It is expected that the 495-acre excavation (Figure ) will be implemented over two or more decades, since the project will be costly and funds are not currently available for the work. An innovative, modular approach will accomplish two adaptive management objectives. First, it will be possible to match each funding opportunity with the restoration of one or more habitat modules. Rather than proceeding in a piecemeal fashion, the restoration will be completed in modules to make up the 495- acre program. Second, monitoring and research on each completed module will improve the next. As problems are identified, corrective measures can be built into later construction plans. As restoration methods are improved or new ideas developed, they can be incorporated into subsequent modules. The essence of adaptive management is a dynamic plan that can improve as knowledge accumulates and restoration science progresses. Restoration Research Needs Several questions remain about how to conduct the sediment removal program: How should the negative impacts of dredging be mitigated? Where should dredge spoils be deposited? How can river floods be diverted away from the restoration area to prevent further sediment deposition? How can the dunes be stabilized to prevent sedimentation of adjacent channels? How can we salvage vegetation that will be damaged during excavation? How should new marsh habitats be created to speed their development toward a fully functional wetland? How can the movements of undocumented aliens be diverted away from restored and other critical habitats? In response to these need
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