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Parameters Controlling the Success of Dune Revegetation at King Salmon, California

by Andrea J. Pickart, Lanphere-Christensen Dunes Preserve, Arcata, CA, USA,



Document Type: Proceeding Paper

Part of: Coastal Zone '87

Abstract:

An eroded 9. 3 ha (23 acre) sand spit was restored through jetty construction and fill (using dredge spoils) by the Corps of Engineers at King Salmon on Humboldt Bay, California. An experimental planting designed to test revegetation methods using native plants was initiated on the fill in March, 1985 by Humboldt County Department of Public Works under contract to the Corps. A two year quantitative investigation was conducted to determine the suitability of different native species and planting treatments for stabilization. Two study plots were used to test the effect of five treatments on the germination (i. e. emergence), survival and end-of-season cover for nine native dune species. Significant differences between all species for survival permitted ranking of species. In the control condition species fell into two groups of relatively higher and lower cover. Cover was primarily dependent on germination due to a lack of significant growth under control conditions.

Subject Headings: Dunes | Dredged materials | Beaches | Vegetation | Soil properties | Sandy soils | Sand (hydraulic) | California | United States

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