- Author: Katherine E. Kerlin
Can't live with them, can't live without them — at least not at first when it comes to the relationship between some invasive and endangered species.
Efforts to eradicate invasive species increasingly occur side by side with programs focused on recovery of endangered ones. But what should resource managers do when the eradication of an invasive species threatens an endangered species?
In a recent study published in the journal Science, researchers at the UC Davis examine that conundrum now taking place in the San Francisco Bay. The California...
- Author: Jeannette E. Warnert
One of the worst rangeland weeds in the West is aptly named after a monster in Greek mythology that has writhing snakes instead of hair.
Medusahead, an unwelcome transplant from Europe, is anathema to the cattle living off rangeland grass. The weed's three-inch-long bristles poke and sometimes injure the animals' mouths and eyes. The weed is also low-quality forage for livestock. When medusahead takes over rangeland, it reduces the forage value by 80 percent.
When Fadzayi Mashiri, UC Cooperative Extension advisor in Mariposa, Merced and Madera counties, was appointed in 2013, she became the first natural resources and rangeland expert to hold the position since the...
- Author: Zac Unger
A UC team tamps down fire danger and finds common ground
The summer of 2002 was a bad fire season in the United States. Twice as many acres burned than in 2001, and more total acres were destroyed than in all but one of the previous 40 years. The McNally Fire in Sequoia National Forest was only the second largest fire in California that year, and it alone cost more than $50 million to extinguish. It was against this smoky backdrop that George W. Bush launched the Healthy Forests Initiative, a wide-ranging plan to reduce the severity of western wildfires.
In California, the plan coalesced around the concept of...
- Author: Kathy Keatley Garvey
He's asked this question a lot.
"Does colony collapse disorder (CCD) still exist?"
Eric Mussen, UC Cooperative Extension specialist in the Department of Entomology and Nematology at UC Davis says "yes."
But the winter losses are being attributed to many other causes. "Less than 10 percent of the losses are now attributed to CCD," Mussen points out.
CCD surfaced in the fall of 2006 when beekeepers starting seeing their colonies decimated. They'd open the hive, only to find the queen, the brood and the food stores. The adult workers? Gone.
"CCD still exists and it appears as though in cases where multiple other stresses combine...
- Author: John Stumbos
- Contributor: Aubrey White
It's not every day that you can take a guided tour of a 100-year-long scientific experiment, but that's what is happening May 28 as UC Davis hosts a field day at the Russell Ranch Sustainable Agriculture Facility.
The 72-acre “Century Experiment” at Russell Ranch is exploring the long-term impacts of crop rotation, farming systems, and inputs of water, nitrogen, carbon, and other elements on agricultural sustainability. Researchers document trends affecting crop yields, soil quality, profitability, environmental impacts, and efficiency in use of limited resources.
“We look at both organic and conventional systems,” says Russell Ranch...
