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The Tulalip Spartina Control Project

1998 Annual Report

Spartina, commonly known as cordgrass, is a non-native esturine grass that is widely considered a noxious weed. In areas of Puget Sound and Willipa Bay, native habitat critical to shellfish, salt marsh plants, migratory birds, juvenile fish and other wildlife are being replaced by Spartina. It is currently spreading through areas of northern Puget Sound: Port Susan, Skagit Bay and Padilla Bay. In 1994, staff from the shellfish program participated in a workshop to eradicate Spartina. Spartina was identified in Tulalip Bay and an eradication and control program initiated. It was recognized that additional resources were needed in order to eradicate Spartina. The current Spartina project is funded through the Bureau of Indian Affairs, Noxious Weed Eradication Fund. All information collected through this project was shared with the counties (Snohomish, Island, Skagit), Washington State Department of Agriculture, local residents, and Adopt-A-Beach.

In previous years, the Spartina Program successfully removed the primary infestation in Tulalip Bay. However, Spartina was found on several on-Reservation areas outside of Tulalip Bay, which were removed and monitored. In 1998, the Spartina Project was able to put less time into Spartina control, and more hours into search efforts. Because of the various habitats on the Tulalip Reservation, very thorough surveys and monitoring is needed. It is believed that all of the Spartina infestation sites were located. All sites received two control treatments of either mowing or excavation.The primary attention and resources of the Program went towards off-Reservation surveying. It is believed that the Tulalip Reservation's seed source lies in Port Susan. However, full control in Puget Sound depends on knowing where all the seed sources are, and controlling or eradicating that source.

Project Accomplishments

The Tulalip Spartina removal efforts continued with the removal of infestations both on- and off-Reservation. Monitoring surveys continued to find additional seedlings or missed clones in Tulalip Bay and other areas of the Reservation. Removal efforts ensured that the Spartina was under control. To date, all known infestations have been removed or treated on the Tulalip Reservation. Cooperative removal efforts were also conducted with the residents of Warm Beach (Snohomish County) and Triangle Cove (Island County).

The following is a detailed account of the 1998 accomplishments of the project.

Shoreline Surveys

Survey work to locate and eradicate Spartina at Big Flats began in March. The purpose of the early visit was to take advantage of Spartina's ability to "overwinter", relative to the indigenous vegetation which is washed out after the fall die-off. The strategy worked well. Several seedlings, hummocks and clones were found that we were not visible through the surrounding vegetation in the Spring and Summer.

Other survey work continued in May. A full effort started at Kayak Point County Park and worked southward to Ebey Slough and Big Flats. In addition to the early finds at Big Flats, and the expected residuals on the inner bay at Tulalip, a three-foot clone was found just east of Priest Point. This was about 100 feet from a clone that was removed two years prior.

All of the eastern shoreline from Kayak Point in Snohomish County to Dash Point at the King Pierce County line, with the exception of the industrial areas in Everett and Seattle, were surveyed for the presence of Spartina. This included the shores of Hat, Jetty and Smith Islands. Seedlings and clones were found near Merrill and Ring Creek (near the site of a previous infestation), and at Meadowdale County Park.

The west shoreline of Vashon Island from Vashon Pt. to Sunset Beach, and the eastern shoreline from Vashon Pt. to the southern end of Maury Island were surveyed. Spartina was found at KVI park, the site of a previous infestation.

That area of shoreline on Sinclair Inlet from Gorst to Manchester State Park was searched on the report of a possible sighting. While there appears to be potential Spartina habitat, particularly between Gorst and Port Orchard, no Spartina was located.

The results of the surveys and any newly found infestations were reported to King County Noxious Weed Control, Snohomish County Noxious Weed Control, Adopt a Beach, and the Washington State Department of Agriculture Spartina Program.


Purple Loosestrife Survey

The Tulalip Spartina Control Program was authorized to charge Purple Loosestrife control work to its budget by BIA Noxious Weed Control, which is our funding source this year. This beautiful magenta flowing plant has invaded nearly every county in Washington State. Our survey began on reported sightings in Snohomish County.

The major lakes on the Reservation were inspected in late August. The survey was made using an inflatable raft and rowing around each lake. Several drainage impounds along Tulalip Creek as well as Weallup Lake, Mary Shelton Lake, John Sam Lake and Ross Lake were surveyed. No purple loosestrife was found.


Weed Control

Spartina control work began in March at Big Flats. This area received two treatments consisting of either mowing or excavation. The inner bay at Tulalip received two treatments as well. The clone east of Priest Point was excavated. All affected areas on Reservation were scheduled to receive one last treatment in September.


Public Education Opportunities

Tulalip Staff presented a brief lecture on the potential threat Spartina poses to the estuarine environment the Warm Beach Christian Camp. Students were taken on field trips to the Warm Beach estuary to learn how to identify Spartina. Approximately 100 students, parents and staff participated in the field experiences.

Tulalip staff also took every opportunity to distribute Spartina educational brochures at many meetings and conferences. Brochures were also made available at the Tulalip Tribes Fisheries office.


Training

The Spartina coordinator attended training for both Arcview in September and Arcinfo in December. These two very powerful computer programs will be extremely useful in cataloging Spartina infestations and possibly correlating with other environmental factors. The coordinator also attended training on green crab identification and handling. The invasive green crab was recently documented in Willapa Bay, and it is anticipated to eventually reach the waters of Puget Sound. Recent information indicates many green crab sightings have been in Spartina habitat. Spartina surveys will now include efforts to locate green crab.


Interagency Cooperation

The Tulalip Tribes Spartina Control Program once again worked with several other local control agencies and tribes. Tulalip staff attended monthly North Puget Sound Spartina Coordinator's meetings which included staff from the Swinomish Tribe, Triangle Cove Spartina Task Force, Adopt a Beach, Washington Water Trails, Island, Skagit and Snohomish Countys' Weed Control, WSDA, and Washington State Department of Fish and Wildlife. Staff attended this year's annual Spartina Bash sponsored by Dr. Dave Milne at The Evergreen State College.

The Tulalip Program reported regularly to Adopt a Beach with its survey results. Data was utilized to coordinate removal of newly found infestations.

The Tulalip Tribes were in part responsible for successfully lobbying the return of the Marshmaster mower to Triangle Cove on Camano Island. The Tulalip program provided a truck and driver to transport the Marshmaster back to Camano Island from Willapa Bay.

The Tulalip Spartina Control Program also made a contribution of $200 to the Triangle Cove Spartina Task Force for the purchase of herbicide and surfactant for their control efforts. Triangle Cove is generally considered the seed source for the Tulalip infestations.


This web page last updated July 16, 2002