Earth Systems Science

From Soil to Climate Solutions: Berhe Leads Sierra Nevada Research Institute into its Next Chapter

September 11, 2025

When Professor Asmeret Asefaw Berhe arrived at UC Merced in 2009, she and her husband, Professor Teamrat Ghezzehei, were leaving major research institutions to join a brand-new campus in California’s Central Valley. It was a leap of faith — one made easier by the Sierra Nevada Research...

Human Waste Treatment Helps Solve Climate-Change Puzzle, New Study Shows

About 4.5 billion people around the globe do not have access to adequate sanitation, and what they do have — typically pit latrines and lagoons — are responsible for widespread illnesses...

Researchers Look to Wetlands to Increase Delta Water Quality

UC Merced Professor Peggy O’Day hopes to improve water quality in the California Delta by studying local wetlands. O’Day is leading a new three-year study of Merced County wetlands...

Berhe Named to Endowed Chair in Recognition of Her Work in Soil Sciences

Soil biogeochemistry Professor Asmeret Asefaw Berhe has been named the Ted and Jan Falasco Chair in Earth Sciences and Geology. “The Falasco family is engaged in construction and...

Biodiversity Study Indicates Large and Small Organisms React Similarly to Environment

Bacteria and starfish have more in common than people might think. A new study published today in the Proceedings of the Royal Society B: Biological Sciences shows that both single-celled (...

TED Audiences get the Dirt on Soil and Climate Change from Berhe

Soil is one of the foundations of life on Earth and could be an important part of the solution to climate change, if only we can stop treating it like dirt. That’s the message Professor...

Stands of brown, dead trees throughout Sierra Nevada forests

Multiyear Drought Caused Massive Forest Die-off in Sierra Nevada

The most extreme drought event in hundreds of years caused a catastrophic die-off of the Sierra Nevada’s mature trees in 2015-2016. A study published today in Nature Geoscience details how...

Sierra Seedlings Illustrate Effects of Climate Change on Next Generation of Forests

Climate change is bad news for forests, and a new study by UC Merced Professor Emily Moran demonstrates one aspect of that news. Higher summer temperatures hurt tree seedlings’ growth and...

Lengthy Study Shows Value of Soil Health and Forest Restoration after Damaging Events

A nine-year experiment by a UC Merced Department of Life and Environmental Sciences professor and his colleagues is illuminating the importance of soil carbon in maintaining healthy and functioning...

Professor Sora Kim examines a fossilized shark's tooth.

One Key to Climate Change Could Be Stuck in a Shark’s Tooth

Most people wouldn’t think sharks can teach researchers about the planet’s distant past and its more immediate future. UC Merced paleoecologist Professor Sora Kim isn’t most...