- Author: Jeannette E. Warnert
Pesticides that have not been sold at the retail level for years are still regularly found in residential runoff water, according to research in Sacramento and Orange counties by UC scientists. So called “legacy pesticides” are probably old products that homeowners still have on their garage shelves and are still using to control pests.
An earlier study by the California Department of Pesticide Regulation and the UC Integrated Pest Management Program found that 60 percent of pesticides sold to consumers are for ant control. For that reason, UC Cooperative Extension specialist in landscape horticulture Loren Oki of UC...
- Author: Rick Sweitzer
The UC Berkeley Sierra Nevada Adaptive Management Project (SNAMP) Fisher Team has just finished closely monitoring reproductive-age female Pacific fishers living in the Sierra National Forest near Bass Lake for the spring 2011 denning season. Each year the denning season for fishers starts around late March and ends in mid June.
The fact that one of the study's radio-collared female fishers moved her kit from a natal den tree (where the kits were born) in the Sierra National Forest to a maternal den tree in the Mariposa Grove area of Yosemite National Park was a highlight. The event was significant for the park service because it represents the first known fisher den tree...
- Author: Ann Brody Guy
As it turns out, the farmer and the cowman should be friends, as the classic “Oklahoma!” song suggests. According to a just-published UC Berkeley study, wild bee species pollinate California crops to the tune of $937 million to $2.4 billion per year. That amounts to more than one-third of all pollination “services” to the state’s crops.
Many of those crop-pollinating wild bees live in rangelands – chiefly ranches that graze cattle.
“This means that preserving rangelands has significant economic value, not only to the ranchers who graze their cattle there, but also to farmers who need the pollinators,” said Claire Kremen, UC Berkeley associate professor of environmental science, policy and management,...
- Posted By: Trina Wood
- Written by: Carson Jeffres, fish ecologist, UC Davis Center for Watershed Sciences
A very wet spring brought a good deal of water to the floodplains this year—good news for juvenile salmon that thrive in this habitat. Floodplains — such as the Yolo and Sutter Bypass areas and the Cosumnes River floodplains — provide a link for juvenile salmon between the gravel bedded rivers where they hatched and the ocean where they will spend the next one to five years.
Although salmon may only use the floodplain for a month or two, this could mean the difference between success and failure in their long journey to the ocean and back again. When juvenile salmon spend time on the floodplain, they grow faster than those that use only the river channel during their migration to the ocean (Sommer et al. 2001, Jeffres et al....
- Author: Pamela Kan-Rice
The Las Conchas fire that recently consumed nearly 137,000 acres in Los Alamos, N.M., serves as a reminder of how quickly fire can move if given fuel. I can’t light a barbecue with matches and lighter fluid, but a small ember drifting on the wind can find so many ways to burn down people’s homes if given the right conditions.
Removal of vegetation near Los Alamos National Laboratory, which is part of the UC system, created a buffer and helped spare the lab from the Las Conchas fire, which came within 50 feet. Creating a buffer is one of many preventive measures that can be taken to protect property from wildfires.
In a wildfire-prone area, even if you have a house with a concrete tile roof and noncombustible siding, an...