- Author: Ann King Filmer
All bets are off in terms of what will happen with plant species migration and crop production as the climate changes globally.
A common assumption has been that native plants and animals would “move,” or migrate, to higher elevations as temperatures rise, to maintain their “preferred” temperatures, but a new report by Jonathan Greenberg at UC Davis, shows that many California plant species moved downhill over the past 70 years.
According to Greenberg, “While the climate warmed significantly in this period, there was also more precipitation. These wetter conditions are allowing plants to exist in warmer locations than they were previously capable...
- Author: Chris M. Webb
Synthetic soil fumigants such as chloropicrin and 1,3-D are used by some commercial growers to control soilborne pathogens, weeds and nematodes prior to planting strawberries, onions, tomatoes, eggplant, peppers and spinach. These fumigants and all other biocidal products with the potential to harm the environment and human health are highly-regulated by the federal Environmental Protection Agency, the state Department of Pesticide Regulation, and county agricultural commissioner's offices.
UC Cooperative Extension farm advisor Oleg Daugovish and his collaborators work hard to find effective, environmentally-safe and economically-viable ways to improve...
- Author: Kim Ingram
Adult and juvenile California spotted owl
During a Sierra Nevada Adaptive Management Project (SNAMP) public meeting, a participant brought up the idea that California spotted owls preferred to nest near forest edges to be closer to foraging habitat and their prey. Principal investigator for the SNAMP Owl Team, Dr. Rocky Gutierrez, charged research fellow Casey Phillips and SNAMP Owl Team project leader Doug Tempel to research this question at SNAMP study sites in the Tahoe and Eldorado National Forests to see if this was...
- Author: John Stumbos
The giant sequoias of the Sierra Nevada are the biggest and among the oldest trees on the planet. Some are 2,000 to 3,000 years old. Forestry scientists from the University of California and Cal Poly, San Luis Obispo, want to learn more about how disturbance factors affect the health of these aging behemoths.
Growth-response studies to date show that tree vigor can increase following moderate intensity disturbances such as prescribed fire or mechanical fire-hazard reduction treatments. Less certain, however, is how giant sequoias respond to lower and higher intensity disturbances. This information is of critical importance to identify the tradeoffs involved in fire prevention treatments or evaluating management...
- Author: Kathy Keatley Garvey
“Going green” means buying local honey, say honey bee experts at the University of California, Davis.
“It’s not only supporting the local beekeepers in our flagging economy, but imported honey can be problematic,” said bee breeder-geneticist Susan Cobey. “When you buy imported honey, you don’t always know what you’re getting. The ‘honey’ could be a mixture of corn syrup and water, or blends of honeylike products. It could contain pesticides or antibiotics. It could be mislabeled or from a different country or floral source than indicated on the label.”
“Also,” Cobey said, “you don’t know how it’s been treated after bottling. Heated honey, for example,...