As wine production threatens the endangered coho salmon population in northern California, vineyard owners are taking steps to restore stream habitats.
According to wine aficionados, pinot noir pairs quite well with salmon. But growing this grape — and several other varietals — is actually hurting the coho salmon population in California’s rivers and streams.
“Like
other agricultural industries in California, vineyards rely on water for their operations.
But at the same time … fish need enough cool water in their streams to survive,”
said Liz Spence, the Nature Conservancy’s associate project director for the north
coast region in California. “So the real challenge is how to balance the needs
for both – nature and fish and the industry.”
The main concern is the coho salmon, which is endangered
in northern California. (There are other “runs” of coho salmon on the West
Coast that are not endangered.) But steelhead trout also have been affected by
reduced water levels. The fish face trouble when there is not enough water in a
stream, Spence said, or if there are changes in the temperature or habitat of
the stream.
Beyond water needed to grow the grapes, there’s a method
to reduce frost that also calls for copious amounts of water — 50 gallons for
each acre, every minute, according to an August 2011 report by the Bay
Citizen,
a San Francisco-based news organization. “In smaller tributaries, the technique
can literally suck stretches of a stream dry,” the article reports.
To help solve the problem, vineyard owners have been
turning to more efficient irrigation: storing water in the winter months to be
used in the summer when there’s less rainfall, and planting cover crops to
guard against soil erosion. “They know that maintaining and preserving good
water resources … is integral to their ability to produce quality grapes in
the future,” said Spence. The Nature Conservancy is also encouraging vineyard owners
to work together to coordinate water demand and supply.
Both oenophiles and salmon lovers can see which vineyards
are taking action via Fish Friendly
Farming, a
certification project from the non-profit and Napa-based California Land Stewardship Institute, which gives its stamp of approval to wineries and farms that work on
habitat and water-quality issues. Several vineyards and winegrower associations
also have partnered with the national conservation group Trout Unlimited for
the “Water and
Wine”
project.
And it is not just a California issue – Oregon is
also known for wonderful wine and delicious salmon. This
year, more than 250 vineyards in the Pacific Northwest have been given the “Salmon-Safe” certification for protecting fish
habitats by planting trees along streams or using natural pesticides. Check out
the list, or look for the “salmon-safe” label on bottles of wine.