Research

The aroma of a glass of chardonnay. The crunch of a potato chip. Taste, smell, touch, sound and sight all influence what people enjoy, buy and trust. For decades, the University of California, Davis, has helped researchers and industry better understand those experiences through sensory science, the study of how people perceive the world through their senses.

After the sun sets and darkness falls over the vineyards near Lodi, American barn owls start to glide above the grapevines in search of rodents below. As the birds hunt, researchers at the University of California, Davis, and California State Polytechnic University, Humboldt, and San Luis Obispo, are paying attention to how noises echoing through the fields influence these nocturnal raptors.

Across an expanse of open grassland in Sacramento County, an eight-foot, stream cut bank holds dozens of mud-domed bird nests, where tiny heads peeked out before a colony of cliff swallows took flight. Cliff swallows are small migratory birds that arrive in the Central Valley each spring to breed, and while they now commonly nest on bridges and freeway overpasses, finding their nests built in a natural setting is a striking and special sight, particularly in California’s Central Valley.

With a rising global population and environmental instability, global scientists are working diligently toward a more food-secure future. One avenue many are investigating is how engineered biomaterials can influence food production, creating a path toward sustainability.

For two and a half centuries, the United States has been founded upon our capacity to feed communities, both at home and throughout the world. Through the forethought of federal legislators and Abraham Lincoln, we now have a complex and interconnected cooperative system for growing, cultivating, harvesting, processing and delivering the food we all rely on. 

When the time is right, a good love song can make all the difference. 

A study from the University of California, Davis, found that temperature affects the sound and quality of male frogs’ mating calls. In the colder, early weeks of spring, their songs start off sluggishly. In warmer weather, their songs pick up the pace, and female frogs take note.

Better songs not only make the males more attractive mates, but they also suggest to females that environmental conditions are suitable for reproduction.

Doctoral student Cassidy Cooper is the first recipient of a fellowship supporting conservation research at the UC Davis College of Agricultural and Environmental Sciences. Funded by an endowment honoring a late UC Davis alum who loved wildlife, the fellowship supports her research on how temperature affects native fish in California.

For nearly 20 years, the Olive Center at the University of California, Davis, has worked to improve the olive and olive oil industry through research, education and outreach. The center, known for its work in sustainable olive growing and improving olive oil quality, has named chemist Selina Wang as its faculty director to guide the next phase of research and innovation for the state’s growing olive industry.

Rows of tightly packed olive trees stretch across California’s Central Valley. These super-high-density orchards, where trees are planted close together for faster, mechanized harvesting, can grow strong with less fertilizer than expected, according to new research from the University of California, Davis.

The plants in our backyards do more than add beauty – they support local insects and thrive, or struggle, depending on the climate. As temperatures shift and rainfall patterns become less predictable, the timing of when plants bloom and insects emerge is changing.