Olympia oysters, whose native range runs from Baja California to southern Alaska, are being enlisted as ecological engineers ...

Biodiversity After 28 Years, Alameda Creek Opens Up To Fish The final barrier is falling. It's a watershed moment.

When ranchers leave the land, what version of nature takes over? The park and The Nature Conservancy have ambitious restoration plans.

Here to stay? Mats of Eurasian watermilfoil clog waterways in the Tahoe Keys, on Lake Tahoe’s south side. It can regrow from a wisp. (Sonya Bennett-Brandt) Biodiversity What Lies Beneath Can we keep ...

For the first time in history, black bears are living in North Bay counties, occupying an ecological niche once filled by grizzlies.

Climate Change Mud-Starved Wetlands Get a Meal, At Last With Bipartisan Infrastructure Law funding, the Bay’s wetlands are finally getting some precious muck. Why have we been dumping it offshore?

Biodiversity Eulogy for a Crayfish We Hardly Knew The death knell for the sooty crayfish probably sounded with the introduction of its cousin from the north.

A group of coho salmon alevin, with intact egg sacks still visible. (Will Boucher) Conservation A Last Best Hope for Coho in the Russian River Now equipped with $8.4 million in federal money, ...

Inspired by the science of beaver wetlands, activists tackle a long-held belief that beavers aren't native to much of California.

The 1,800-acre Máyyan ‘Ooyákma–Coyote Ridge Open Space Preserve is home to 13 endangered or threatened species. Volunteers played a major role in making it accessible to the public.

Young kelp, on PVC pipes under grow lights at the UC Davis Bodega Marine Laboratory. Once these babies are three months old, they’ll leave their sheltered lab lives and be outplanted on the seafloor ...