The world’s coral reefs are both stunningly beautiful and vital to ocean health, hosting a huge diversity of fish and marine life. And they are, as they always have been, under pressure from periodic natural disasters. However, a coral reef’s ability to recover from unavoidable and often unpredictable natural disasters, like hurricanes and tsunamis, may depend on human activities including fishing and pollution. UC Davis marine biologist Mike Gil is one of the scientists working to understand how reefs recover from natural disturbances in the presence of unnatural, man-made stressors.
Developing nations particularly at risk
By Kat Kerlin
With the increasing pace of globalization comes the movement of invasive non-native species around the planet. Although often seen as a “first-world problem,” a new study shows these invasions threaten the economies and livelihoods of residents in some of the world’s poorest nations.
The harlequin ladybird was introduced to North America from Asia in 1916 to control aphids. It has spread to Europe and though beloved by many, is considered a pest in some regions. Credit: Wikimedia Commons
Today’s White House announcement of the National Microbiome Initiative will bring new funding and attention to better understand the billions of microbes that swarm around in and around us and probably play an important role in our health, food and environment. At UC Davis, many scientists are already exploring this hidden world. Here are a few of them.
Jonathan Eisen is one of the pioneers of studying microbe communities through genetic sequencing. His lab is involved in understanding the complete “Tree of Life,” and projects on microbial communities associated with buildings, as well as communities on different plants and animals, including people, dogs and cats. A prolific blogger, Eisen regularly calls out examples of excessive microbiome hype.
Holstein cows eat lunch at the Dairy Cattle Facility at UC Davis. Credit: Gregory Urquiaga, UC Davis
By Frank Mitloehner
As the November 2015 Global Climate Change Conference COP21 concluded in Paris, 196 countries reached agreement on the reduction of fossil fuel use and emissions in the production and consumption of energy, even to the extent of potentially phasing out fossil fuels out entirely.
Both globally and in the U.S., energy production and use, as well as the transportation sectors, are the largest anthropogenic contributors of greenhouse gasses (GHG), which are believed to drive climate change. While there is scientific consensus regarding the relative importance of fossil fuel use, anti animal-agriculture advocates portray the idea that livestock is to blame for a lion’s share of the contributions to total GHG emissions.
By Kat Kerlin
Global carbon dioxide emissions are triggering permanent changes to ocean chemistry along the West Coast. Failure to act on this fundamental change in seawater chemistry, known as ocean acidification, is expected to have devastating ecological consequences for the West Coast in the decades to come, warns a multistate panel of scientists, including two from UC Davis Bodega Marine Laboratory.
Their report, issued this week, urges immediate action and outlines a regional strategy to combat the alarming global changes underway. Inaction now will reduce options and impose higher costs later, the report said.
Audio: Listen to this story on our podcast, Three Minute Egghead.
By Kathy Keatley Garvey
Nectar doesn’t always taste so sweet, but honeybees and other pollinators still feed on it. Now UC Davis community ecologist Rachel Vannette has discovered why pollinators continue to forage on “toxic” or bitter-tasting nectar, despite what should be a deterrent.
In newly published research in the journal Ecology, Vannette notes that floral nectar is produced by many plants to reward pollinators, but this sugary secretion often contains chemical compounds that are bitter tasting or toxic, which should deter pollinators. Plants including citrus, tobacco (Nicotiana), milkweed (Asclepias), turtlehead (Chelone), Catalpa, and others produce nectar containing bioactive or toxic compounds.
Aedes aegypti, a daytime-biting mosquito that predominantly feeds on humans, has spread to at least seven counties since June 2013, according to UC Davis medical entomologist Anthony Cornel of the UC Kearney Agricultural Research and Extension Center, Parlier, and the UC Davis Department of Entomology and Nematology.
Aedes aegypti carries yellow fever, Zika and other viruses. (CDC photo)
“It’s an issue of great concern, especially as current control methods do not appear to be working well,” said Cornel, who does research on the mosquito in Clovis, Fresno County, where it was discovered in June 2013. Simultaneously, the insect was found in the cities of Madera and San Mateo.
By Kat Kerlin
It’s hard to manage what you don’t measure.
UC Davis is playing a major role in solving California’s biggest water woes by joining forces across the UC system. The UC Water Security and Sustainability Research Initiative aims to account for all of California’s water, better understand how and where it flows, and help demonstrate how water can be managed differently to allow for greater water security.
If you think it’s been a bit chilly in the Sacramento region this week, spare a thought for UC Davis alumnus Refael Klein, lieutenant junior grade in the Commissioned Officer Corps of the National Oceanic and Atmospheric Administration. On a recent day temperatures climbed to 35 degrees below zero Fahrenheit at the South Pole, Klein’s home for the next year.
UC Davis alumn Refael Klein at the geographic South Pole, Nov. 2015. Klein will spend a year at the pole studying climate change.
“It’s been a big dream of mine to visit Antarctica,” said Klein in an interview before he left the U.S. “I feel very fortunate to have the opportunity.”
By Kyeema Zerbe
The Innovation Institute for Food and Health (IIFH) at UC Davis is kicking off a uniquely open collaboration on solving critical challenges in food, agriculture and health with an open workshop Oct. 29 inviting participants from all disciplines to provide input on the institute’s strategic focus.
Food and nutrition insecurity remain serious issues for more than 50 developing countries, according to the 2015 Global Hunger Index. And even as many as 10 percent of populations in developed countries go hungry, including in the fertile lands of California’s Central Valley. The UN Food and Agriculture Organization reports that almost 800 million people worldwide are chronically undernourished. With the global population expected to reach nearly 10 billion by 2050, society faces an uncertain future that demands a coordinated response from all sectors to improve access to adequate nutrition.