Friday, March 23, 2018

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Our latest stories:

Home free: A recently released desert tortoise takes in its new surroundings as the translocation team
looks on. Credit: USFWS

'Homebuilders of the desert'

Desert tortoises are an essential part of their desert habitat — their burrows
provide homes for lizards, snakes, owls and other creatures

Multiple agencies are currently collaborating with the U.S. Fish and Wildlife Service to raise the number of Mojave desert tortoises in areas where the populations are too low to be sustainable. The tortoises are brought in from areas where they have been displaced by human interference to protected areas with lower populations.

There are many conservation efforts in place to protect the Mojave desert and its inhabitants. However, even with these programs, sometimes more assistance is needed. Tortoise populations are naturally slow to increase when their population has dwindled. One of the ways that conservation experts are helping is to make use of translocation, a method of moving an animal from one place to another.

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The tidal marshes that meet the edge of Silicon Valley community of Alviso, California are part of a major salt
pond restoration effort that began in 2003 when the salt ponds were added to the Don Edwards National
Wildlife Refuge. The Service, in partnership with the California State Coastal Conservancy and California
Department of Fish and Wildlife, among many other private and non-profit groups, committed to restore up
to 90 percent of these salt ponds to tidal marsh as habitat for migratory waterfowl. Credit: USFWS

 

Tidal marsh restoration helps build coastal resiliency in Silicon Valley

By Meghan Snow
March 23, 2018

Don Edwards San Francisco Bay National Wildlife Refuge, managed by the U.S. Fish and Wildlife Service, serves as a natural buffer between the corporate headquarters of high-tech companies in Silicon Valley, like Google and Facebook, and the open waters of San Francisco Bay.

The Service, along with dozens of partner organizations, is working to restore former commercial salt ponds lining the bay to tidal marsh that will provide habitat for fish and wildlife, enhance recreational opportunities, and help protect businesses and nearly four million people who live in nearby communities from coastal flooding.

Throughout the refuge, a series of levees separate the edges of the bay into ponds. These non-engineered, earthen berms were originally built by Cargill Salt and its predecessors beginning in the early 1900s to create the ponds for commercial salt production. Salt production required the shallow edges of the bay to be dredged, creating mud piles that formed earthen berms. Over the years, the berms have earned the title of levee as they breakup large waves from the open bay, and trap water that crests the tops into the salt pond "reservoirs." The levees, however, were not designed to serve as flood protection barriers.

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