How long can trees tolerate drought before the forest dies?

Researchers from UC Davis can now predict which forests could survive despite future drought. Their new method links precipitation to tree growth, and it can help people decide where to put their resources as climate change affects patterns of snow and rainfall that impact the health of forests.

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When UC Davis student Madison “Madi” Burns joined the Davis Rewilding Society during her freshman year, it helped bring her future into focus. The second-year landscape architecture major said she has developed a much better understanding of the importance of native plants from her involvement with the student-run organization.

Growing wheat in drought conditions may be easier in the future, thanks to new genetic research out of the University of California, Davis.

An international team of scientists found that the right number of copies of a specific group of genes can stimulate longer root growth, enabling wheat plants to pull water from deeper supplies. The resulting plants have more biomass and produce higher grain yield, according to a paper published in the journal Nature Communications.

Spring is the sweet spot for breeding songbirds in California’s Central Valley – not too hot, not too wet. But climate change models indicate the region will experience more rainfall during the breeding season, and days of extreme heat are expected to increase. Both changes threaten the reproductive success of songbirds, according to a study from the University of California, Davis. 

Viral communities across a grassland area are not uniform, and understanding viral dynamics could lead to better insight into how bacteria in soil will react to drought and other climate changes, according to research out of UC Davis.

Viruses can affect microbes, the food web, the carbon cycle and other ecosystem processes, including controlling bacteria.

Agriculture in California faces an uncertain future as drought, wildfires and other climate extremes become more commonplace in the West. But a fledgling industry focused on growing and distilling agave plants, which are used to produce tequila and mezcal in Mexico, could be California’s answer to fallowed fields and a lack of water.

What does a “resilient” forest look like in California’s Sierra Nevada? A lot fewer trees than we’re used to, according to a study of frequent-fire forests from the University of California, Davis.

More than a century ago, Sierra Nevada forests faced almost no competition from neighboring trees for resources. The tree densities of the late 1900s would astonish most Californians today. Because of fire suppression, trees in current forests live alongside six to seven times as many trees as their ancestors did — competing for less water amid drier and hotter conditions. 

Scientists at the University of California, Davis, have identified new root traits that help grapevines resist drought.

The findings, published in the journal Annals of Botany, could speed up the development of grape rootstocks that protect vines from dry conditions, helping the grape and wine industry adapt to climate change.

California grape growers in coastal areas can use less water during times of drought and cut irrigation levels without affecting crop yields or quality, according to a new

Bioenergy crops are central to climate mitigation strategies. This includes their use in BECCS (Bioenergy with Carbon Capture and Storage) and biomass supplied for heat, power, liquid fuels and in the future, biorefining to chemicals. It has been predicted that bioenergy will be the fastest developing renewable resource over coming decades, but at the same time, land use for bioenergy production can be controversial if it has negative impacts on land for food, or is detrimental to a wide array of ecosystem services.