Experimental enhancement of pickleweed, Suisun Bay, California

California Fish and Game
By: , and 

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Abstract

As mitigation for habitat impacted by the expansion of a pier on Suisun Bay, California, two vehicle parking lots (0.36 ha and 0.13 ha) were restored by being excavated, graded, and contoured using dredged sediments to the topography or elevation of nearby wetlands. We asked if pickleweed (Sarcocornia pacifica L, [Amaranthaceae]) colonization could be enhanced by experimental manipulation on these new wetlands. Pickleweed dominates ecologically important communities at adjacent San Francisco Bay, but is not typically dominant at Suisun Bay probably because of widely fluctuating water salinity and is outcompeted by other brackish water plants. Experimental treatments (1.0-m2 plots) included mulching with pickleweed cuttings in either the fall or the spring, tilling in the fall, or applying organic enrichments in the fall. Control plots received no treatment. Pickleweed colonization was most enhanced at treatment plots that were mulched with pickleweed in the fall. Since exotic vegetation can colonize bare sites within the early phases of restoration and reduce habitat quality, we concluded that mulching was most effective in the fall by reducing invasive plant cover while facilitating native plant colonization.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Experimental enhancement of pickleweed, Suisun Bay, California
Series title California Fish and Game
Volume 101
Issue 2
Year Published 2015
Language English
Publisher California Department of Fish and Game
Publisher location San Francisco, CA
Contributing office(s) San Francisco Bay-Delta, Western Ecological Research Center
Description 14 p.
First page 87
Last page 100
Online Only (Y/N) N
Additional Online Files (Y/N) N