Bats feed on crop pests in Sacramento Valley
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منابع مشابه
Effects of Wildfire on Blue Oak in the Northern Sacramento Valley
The objective of this project was to develop a technique for rapidly determining the extent of wildfire damage to blue oaks (Quercus douglasii) that would be usable by landowners without requiring extensive training. In late winter 2000, 100 oaks of various sizes and degrees of damage were selected from 10 plots located where wildfires had burned in the previous year. Measures of individual tre...
متن کاملHydrology of Vernal Pools on Non-Volcanic Soils in the Sacramento Valley
The hydrology of vernal pools near Mather Air Force Base in Sacramento County was investigated to assess the relative importance of direct precipitation, overland flow, and subsurface flow on the water level regime of vernal pools located on a Redding-Red Bluff soil complex, and to determine if constructed pools affected the hydrology of naturallyoccurring pools. Studies included direct continu...
متن کاملEffect of non-crop vegetation types on conservation biological control of pests in olive groves
Conservation biological control (CBC) is an environmentally sound potential alternative to the use of chemical insecticides. It involves modifications of the environment to promote natural enemy activity on pests. Despite many CBC studies increasing abundance of natural enemies, there are far fewer demonstrations of reduced pest density and very little work has been conducted in olive crops. In...
متن کاملUse of micro-XANES to speciate chromium in airborne fine particles in the Sacramento Valley.
While particulate matter (PM) in the atmosphere can lead to a wide array of negative health effects, the cause of toxicity is largely unknown. One aspect of PM that likely affects health is the chemical composition, in particular the transition metals within the particles. Chromium is one transition metal of interest due to its two major oxidation states, with Cr(III) being much less toxic comp...
متن کاملGlobal Positioning System surveying to monitor land subsidence in Sacramento Valley, California, USA*
A subsidence research program began in 1985 to document the extent and magnitude of land subsidence in Sacramento Valley, California, an area of about 15 600 km, using Global Positioning System (GPS) surveying. A brief description of GPS surveying is followed by a summary of each of four surveys between 1985 and 1989. In addition to periodic conventional spirit levelling, an examination was mad...
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ژورنال
عنوان ژورنال: California Agriculture
سال: 1998
ISSN: 0008-0845
DOI: 10.3733/ca.v052n01p8