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Restoring in the rain

November 20, 2003

VIC LEIPZIG AND LOU MURRAY

After 22 years of weeding and picking up trash at the Bolsa Chica

wetlands, Vic and I finally have an opportunity to actually plant

some wetland vegetation there.

The Bolsa Chica Conservancy recently received a grant from the

Southern California Wetlands Recovery Project to restore native

vegetation to the area around their Interpretive Center. The goals of

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the project are to increase plant diversity, improve habitat, prevent

trespassing on habitat areas and increase interpretive opportunities.

Vic and I met with Grace Adams, executive director of the

conservancy, and Brian Shelton, California Department of Fish and

Game biologist, to discuss various planting options. We decided to

begin the restoration project with the muted tidal salt flat next to

Warner Avenue. Bicyclists constantly cut across the mudflats has

crushed the fragile vegetation, which prevents establishment of lush

growth. Planting saltbush, coyote bush and spiny rush should

discourage casual trespass and provide high quality habitat.

Vic was thrilled at the thought of actually getting to do some

real in-the-ground restoration. The thrill lasted until he learned

that his job would be weeding and trash removal. He teaches on

Saturday mornings, and wouldn't be available during the planting

time. I tried to soften the blow by assuring him that all good

restoration projects start with weed and debris removal and that his

role was essential to the project's success. In this case, I wasn't

just talking bovine fertilizer. We needed expert weed removal because

the section to be restored was an upper salt marsh strip with a lot

of pre-existing native vegetation.

The project area known as east cell was a former grassy upland

that was excavated by the Department of Fish and Game for a wetland

creation project in 1978. The Department of Fish and Game excavated

two cells and connected them to the Warner Channel by culverts to

provide tidal water. But there was a problem. The culverts were too

small and set too high to achieve any meaningful restoration. The

cells never got enough seawater flushing to grow a good crop of salt

marsh plants.

Nearly two years ago, the old culverts were replaced with larger

ones that were set deeper. This small change in culverts made a big

change in the health and vitality of the salt marsh plants growing in

the cells. The pickleweed, saltwort and sea lavender in the lower

marsh zone increased greatly in density after the restoration and

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