A lot has happened in the battle against Sudden Oak Death (SOD) since Bay Nature reported on it in January. To date, the disease has been identified in black oak, coast live oak, tanbark oak, and Shreve oak trees in … Read more
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Most of the world’s 5,000 or so species of mammals are already nocturnal, so the effect of urbanization on their circadian activity is probably nil. Actually, even the nocturnal animals are mostly crepuscular in activity; that is, they have a … Read more
The return of endangered coho salmon to their ancestral spawning grounds in this west Marin watershed is an essential component of the connective tissue that holds a fragmented ecosystem together. Greeting the salmon tethers us to the landscape’s seasonal rhythms and reawakens a lineage that goes back to the first inhabitants of this place.
Nestled in the hills southeast of Livermore, at the border between the San Joaquin Valley and the Bay Area, the old Tesla Mine townsite in Corral Hollow sustains a vibrant mix of inner south coast range plants and animals along with the traces of a rich human history. But a state proposal to create an off-road vehicle park in the hollow threatens to reopen old scars on this tranquil landscape.
In his article on “The Changing Nature of Joaquin Miller Park” author Rex Burress wrote that the fiddle-heads of young bracken ferns are edible “either cooked or raw.” However, before you head out to pick ferns for your soup pot, … Read more
Anadromous Fish Symposium The Center for Ecosystem Mangement and Restoration (CEMAR) and the Oakland Museum are sponsoring a symposium on November 14-15 on “Salmon and Steelhead in Your Creek: Restoration and Management of Anadromous Fish in Bay Area Watersheds.” This … Read more
The Blackhawk Quarry in Danville points to a time, nine million years ago, when the Bay Area was inhabited by elephant-like browsers, herds of three-toed horses, packs of bone-crunching dogs, and an eight-foot-long-sabertooth salmonid, Where did they all go?
Rarely seen and, until recently, poorly understood, bats are a significant component of the Bay Area’s natural environment. Now, researchers are filling in the gaps by studying several of the area’s most at-risk species.
Over 200 years ago, Swedish naturalist Karl von Linne (or, as he Latinized the name, Carolus Linneaus) devised a system for classifying all living things based on anatomical structures. Although Linneaus lived before Darwin, his method presaged later concepts of … Read more
Q: What’s the difference between bird songs and bird calls? [L.R., Santa Clara A: Bird song, usually produced by the male, is an advertisement of territory and breeding availability, and, in most species, is limited to the breeding season. As … Read more