Restoration of Coastal Dunes by M. Luisa Martínez Juan B. Gallego-Fernández & Patrick A. Hesp

Author:M. Luisa Martínez, Juan B. Gallego-Fernández & Patrick A. Hesp
Language: eng
Format: epub
Publisher: Springer Berlin Heidelberg, Berlin, Heidelberg

10.6 Conclusions

The manual methods employed in these two projects have resulted in the return of natural processes regulating the formation of foredunes, blowouts, and parabolic dunes, and the recovery of diverse native vegetation. Both projects were carried out over a 5- to 6-year period. The projects could have been accelerated given additional funding and resources, but the longer duration was ideal to allow a gradual transition from overstabilized dunes characterized by an almost mono-specific stand of exotic vegetation to a more natural morphology without causing a level of instability precluding native species recovery.

Although both projects were relatively limited in area (together comprising a 2.5-km stretch of shoreline), the Lanphere project was the first of its kind in California, and gave rise to many other restoration projects in the region and beyond. As of 2011, a total of 12 km of coastline in the Humboldt and Del Norte counties have been cleared of Ammophila and other invasive species by a number of government agencies and NGOs. Methods have included both manual and mechanical (heavy equipment). Restoration has also been carried out, or is in progress, in a number of dune systems along the California coastline, including the Guadalupe-Nipomo Dunes, Morro Bay Dunes, San Francisco Bay Dunes, Point Reyes National Seashore, Bodega Bay, and MacKerricher State Park.

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