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  • Environment
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Rare Butterfly To Benefit From Wildlife Refuge Restoration

  •  Rich Ibarra 
Wednesday, September 3, 2014 | Sacramento, CA
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Photo courtesy U.S. Fish and Wildlife Service

Lange's Metalmark Butterfly, which is found exclusively in the Antioch Dunes National Wildlife Refuge, is the beneficiary of the work being done to restore the dunes.

Photo courtesy U.S. Fish and Wildlife Service

The Antioch Dunes National Wildlife Refuge along the San Joaquin River is undergoing a transformation.

The Port of Stockton must dredge its Deep Water Channel regularly so that ocean going vessels can sail through it. The sand used to go toward building up Delta levees, but now the sand is rebuilding the Antioch Dunes National Wildlife Refuge. 

After the 1906 San Francisco earthquake, sand from the dunes was used to make bricks to rebuild the city and the 100-200 foot dunes shrank to ground level. 

0903-antioch-dunes-work-r

Work has begun on rebuilding the dunes at The Antioch Dunes National Wildlife Refuge along the San Joaquin River. Photo courtesy U.S. Fish and Wildlife Service

Port Director Richard Aschieris says the port is working with the U.S. Fish and Wildlife Service to restore the dunes and the habitat for the Lange's Metalmark Butterfly, a species that is only found here. 

"At one time there were thousands of them. Now the counts can vary, but the last I heard, there's less than 200 of what's called the Lange's Metalmark butterfly are left."

Aschieris says it could take a decade to restore the dunes to their original state. But as the work progresses, native plants and the butterfly should begin to flourish.


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 StocktonAntioch DunesDeep Water Channel

Rich Ibarra

Contributing Central Valley/Foothills Reporter

As the Central Valley correspondent, Rich Ibarra covers San Joaquin, Stanislaus, and Merced counties, along with the foothill areas including Tuolumne and Calaveras counties. He covers politics, the economy and issues affecting the region.   Read Full Bio 

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