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The San Pablo Bay National Wildlife
Refuge (NWR) provides important year-round habitat for endangered, threatened, and sensitive species like the California clapper rail, salt marsh harvest mouse, California black rail, San Pablo song sparrow, and the Suisun shrew. It also provides migratory and wintering habitat for shorebirds and waterfowl like diving ducks, and 11 fish species that swim through San Pablo Bay to reach fresh water spawning grounds.
The Volunteer Invasives Monitoring Project focuses on tracking and controlling perennial pepperweed (Lepidium), an extremely competitive invasive that forms dense infestations. Perennial pepperweed can grow up to 6 feet tall. It produces clusters of milky-white flowers and abundant seed with a high germination rate.
The San Pablo Bay’s tidal marshes, mud flats, and seasonal and managed wetland habitats are also threatened by other invasive plant species such as purple star thistle, yellow star thistle, and fennel.
Click on any photo for a larger view.
Click on Lepidium map below for a larger view.
All photos provided by Mandy Tu
of The Nature Conservancy
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