SF Invasive Spartina Project

San Francisco Estuary Invasive Spartina Project

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San Francisco Estuary Photo Gallery

Sonoma/Solano/Napa
Marin/San Francisco/San Mateo
Santa Clara/Alameda/Contra Costa

Outer Coast Estuaries Photo Gallery

Tomales Bay
Bolinas Lagoon

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San Francisco Estuary Photo Gallery

	Sonoma/Solano/Napa
	Native S. foliosa marsh on Mare Island.

	Extensive stands of native S. foliosa are still flourishing in the North Bay, such as at Coon Island, Napa River.

	A single S. densiflora plant was found in the brackish 'Pond 2A' marsh in the Napa-Sonoma marsh in 2001. The plant was removed and follow-up monitoring has shown no recurrence.

	Dense stands of S. patens are spreading laterally at the Benicia State Recreation Area, "paving over" all native vegetation.

	S. patens (wiry vegetation in background) encroaching upon native pickleweed and the endangered soft bird's beak (foreground.) Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.


	Marin/San Francisco/San Mateo
	Hybrid S. alterniflora clone beginning to colonize native S. foliosa marsh at Blackie's Pasture, Tiburon. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

	S. alterniflora hybrids steadily fill in this channel at Blackie's Pasture, Tiburon. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

	Several S. alterniflora hybrid clones were found in the Corte Madera Marsh Ecological Reserve. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

	S. densiflora has invaded the entire length of Corte Madera Creek. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

	Colma Creek, San Mateo County, filling in with hybrid S. alterniflora.

	Colma Creek represents one of heaviest hybrid infestations in the West Bay.

	ISP staff collect GPS data on S. anglica at Creekside Park, Marin County.

	S. alterniflora hybrids were often found in fragment marshes in highly urbanized areas, such as San Francisco's India Basin. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

	S. alterniflora located at Larkspur Ferry marsh in 2000-2001 survey. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

	Mudflat near Oyster Point, South San Francisco, converting to hybrid meadow.

	A large population of S. densiflora was found at the mouth of San Rafael Canal, Marin County.

	S. alterniflora at Pier 94, San Francisco. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

	Hybrid clones establishing on rip rap and mud near Candlestick Point.

	Three hybrid clones colonizing mudflats adjacent to San Francisco International Airport.

	Yosemite Channel, San Francisco, contains both native S. foliosa and hybrid S. alterniflora. California State Parks hopes to restore this area to native saltmarsh. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.


	Santa Clara/Alameda/Contra Costa
	S. alterniflora hybrids are coalescing to convert mudflats to a cordgrass meadow at the Elsie Roemer Bird Sanctuary on Alameda Island. September 2001. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring. Photo: Stephen Joseph

	S. alterniflora hybrids interrupt natural sediment transport along the sandy San Leandro shoreline. Photo: Stephen Joseph

	Several S. alterniflora hybrid clones were found at the Palo Alto Baylands. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

	Small outlier populations of S. alterniflora/hybrids are scattered in strip marshes adjacent to South Bay saltponds. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

	S. alterniflora hybrids readily grow in degraded habitat such as rip rap shoreline in Oakland Inner Harbor.

	S. alterniflora in pickleweed marsh at mouth of Stevens Creek. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

	Hybrid clones colonize this restoration site near the mouth of Old Alameda Creek. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

	Monitoring revealed successful control in 2000 of S. densiflora at Pt. Pinole Regional Park. Initial treatment took place at this site in 2005. Efficacy results pending 2006 monitoring.

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Coast Estuaries Photo Gallery
	Tomales Bay
	Flowering S. densiflora plant at Marshall Cove, Tomales Bay.

	Over sixty S. densiflora seedlings were found and removed from Marshall Cove in October 2001.

	ISP staff member discusses identification characteristics for Spartina densiflora with a Marshall Cove landowner.

	A single S. densiflora plant was found by a Tomales Bay landowner at Tomasini Point.

	All S. densiflora plants found in Tomales Bay were removed manually and disposed of off-site.

	Bolinas Lagoon
	A single S. alterniflora plant was found at the north end of Bolinas Lagoon by an observant local biologist on a weekend kayak trip. This plant was dug-out in 2001.

	S. alterniflora plants typically have a red coloration at the base of the culm, such as this plant at Bolinas Lagoon. However, hybrid S. alterniflora plants may or may not have this feature.

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