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11

Aug

Taking Stock of the Bay Area’s Water Supply

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Two-thirds of the Bay Area’s water is delivered from the Sierra Nevada and government water projects.

Water. It flows out of the tap every time we want, cool, clear, and clean. We take it for granted even now, three years into one of California’s driest stretches on record. But we can’t go on like this for much longer — the Bay Area’s water could start to run short in just two decades.

“Population growth will increase demand, and climate change will reduce the supply and increase demand,” said Heather Cooley, director of the Water Program at the Pacific Institute, an Oakland-based nonprofit dedicated to sustainable resource research.

The Bay Area’s population is projected to rise about 25 percent in the next two decades, from 7 million people today to 9 million in 2035. And without preparation there won’t always be enough water for us all. Our expected water demand will exceed the supply by nearly 7 percent in a dry year, and by more than 11 percent in the worst case scenario of multiple dry years… (more)

Bay Area Monitor 2014

07

Aug

How Spiders Spin Silk

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Spider silk is wonderful stuff—light as the breeze and stretchy yet stronger than steel. People can manufacture synthetic fibers, such as Kevlar, that come close but can’t begin to match the process spiders use. Their silk proteins, called spidroins, rapidly convert from the soluble form to solid fibers at ambient temperatures and with water as the solvent.

Not only is this beyond us, we don’t even know how spiders do it. But now, Anna Rising and colleagues unravel this mystery… (more)

PLOS Biology 2014

30

Jun

Super Patient: Francesca Keeps Fighting Pancreatic Cancer

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Francesca enjoying a recent vacation with her family

In 2011, Francesca knew something was wrong. Her stomach hurt and was upset after eating, and she just didn’t feel right. She had also lost a lot of weight, but thought that was normal, considering her life at the time. “I was working fulltime and had just stopped breastfeeding,” she explains. So when she went in for a checkup, she expected to hear it was a stomach problem.

But an ultrasound in November 2011 showed she had pancreatic cancer. “I was shaken. I was only 41 with an 18-month old daughter,” Francesca says. “My whole life was in front of me…” (more)

Cancer Commons 2014

27

Jun

Running Our Groundwater Dry

Historical groundwater overdrafting sunk parts of the San Joaquin Valley up to 28 feet.

California often leads the nation in environmental protection, but we’re way behind when it comes to groundwater. Like mineral rights, aquifer rights have been viewed as coming with the land. So while surface water is allocated to the last drop, groundwater isn’t even regulated comprehensively. This makes us the exception in the western U.S. from Texas to the Pacific coast.

And now that we’re in our third straight year of drought—with the Sierra snowpack down to 18% of normal in the final 2014 survey—we’re pumping more groundwater than ever, and levels statewide are the lowest ever recorded… (more)

Estuary News 2014

10

May

Salmon hitch a ride to the sea

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Trucked salmon smolts acclimate in net pens before release into the Sacramento-San Joaquin Delta.

California’s dry winter left rivers so low that young salmon couldn’t swim from the inland hatcheries where they’re reared to the ocean where they grow up. So wildlife agencies decided to truck them toward the sea instead.

 The big question is whether any of these three-inch smolts will ever find their way home to spawn… (more)

 Frontiers in Ecology and the Environment 2014

01

Apr

Keeping green waste green

Surprise! Guess where much of that green waste really goes?

California mandates cutting waste streams in half through reduction and recycling, so it should be a no brainer to compost all those grass clippings and orange peels. But a third of the green waste collected statewide, or about 11 million tons per year, goes straight into the dump. That’s because local governments get recycling credit for sprinkling green waste on landfills every day to control odors.

But solving this problem creates another. Buried green waste degrades anaerobically and so emits methane, the second most common greenhouse gas of human origin. “This loophole has been terribly abused over the years — landfills are the largest source of man-made methane”, explains State Assemblyman Das Williams (Santa Barbara), who has been keen on waste reduction since working in a recycling facility at age 16… (more)

Frontiers in Ecology and the Environment 2014

When Work is a Day at the Beach

Sand cores reveal the many invertebrates that are literally underfoot at the beach.

Karina Nielsen loves going to the beach as much as any Californian — and may love it even more than most. That’s because as a marine ecologist, she knows those long sandy stretches that look so empty are actually busy with life. “So many of the organisms are buried that it’s not always apparent, especially compared to tidepools,” she says.

But stand in the swash zone where surf meets sand, and you are likely to see shorebirds running back-and-forth to catch invertebrates and sand crabs digging to get away, and feel small crustaceans called isopods nipping at your toes… (more)

OceanSpaces 2014

17

Mar

Bay Primed for Pea Soup?

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Nutrients could be the next big problem for San Francisco Bay — or make that in the Bay, because they’re already here at levels high enough to have caused trouble elsewhere. But despite its excess nitrogen and phosphorus, the Bay has been free of harmful algal blooms and oxygen-depleted dead zones for decades.

We’ve been so sure of this immunity to nutrients that most wastewater treatment plants don’t even have to remove them before discharging into the Bay. But recent chinks in the Bay’s resistance to nutrients are now alerting us to get ready in case there’s worse to come… (more)

Estuary News 2014

The Unsung Smelt

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Longfin smelt are way down in the San Francisco Bay.

While not as famous as its cousin the Delta smelt, the longfin smelt is just as imperiled locally and — if the drought continues — stands to have one of its worst years ever. “The longfin smelt responds strongly to freshwater flows,” explains conservation biologist Jon Rosenfield of The Bay Institute, an environmental nonprofit. “It could really be in trouble.”

Named for its long pectoral fins, this small, silver fish was once among the most abundant in the San Francisco Estuary… (more)

Estuary News 2014

Super Patient: Chelsea Price Takes Charge of Stage III Melanoma

Chelsea on her wedding day with husband Bryan and stepson Gavin

Late in 2010, Chelsea Price’s boyfriend noticed that a mole on her upper back was scabbed and weeping. “It had always been there but he thought I should get it checked,” recalls Chelsea, who was then 23 years old. By the time her dermatology appointment rolled around, however, the mole had healed. “I almost cancelled,” she says.

Good thing she didn’t. At her follow-up appointment, her dermatologist casually said, “Hey, it’s melanoma.” Thinking he was kidding, Chelsea started laughing. When she realized he was serious, she was stunned… (more)

Cancer Commons 2014