Land ecosystems and land use change

Terrestrial ecosystems and their services are key elements of the climate system and global biogeochemical cycles, but are rapidly changing due to urbanization, climate change, and the high demand for food, fiber, and bioenergy. ESS researchers use observations, field experiments, and model simulations to study land-atmosphere interactions, ecosystem-climate feedbacks, and human impacts on the integrity of terrestrial ecosystems. Our group aims to identify tipping point elements in Earth’s biosphere-climate-human systems and to promote more sustainable use, management, and conservation of natural and anthropogenic ecosystems.

Research Groups
Randerson Group
Faculty
Jim Randerson

Global change in terrestrial ecosystems

Goulden Group
Faculty
Michael Goulden

How terrestrial ecosystems work, with an emphasis on what controls the exchanges of gases and energy between land surfaces and the atmosphere

Trumbore Group
Faculty
Sue Trombore

Application of radiocarbon to study the dynamics of carbon cycling in plants and soils

Ecostress Group
Faculty
Paulo Brando

Focuses on quantifying the vulnerability of terrestrial natural ecosystems to repeated disturbances and prolonged degradation

Biosphere-Atmosphere-Human Interaction Research Group
Faculty
Saewung Kim

How biosphere-atmosphere-human interactions are affecting tropospheric oxidation capacity

Biosphere Atmosphere Interactions Group
Faculty
Alex Guenther

Investigating biosphere-atmosphere interactions on scales of individual cells to the whole earth system to improve predictions of biogeochemical fluxes, atmospheric composition, air pollution, climate and ecosystem health.

Egoh Group
Faculty
Benis Egoh

Mapping and valuing of ecosystem services to understanding the economic consequences of land degradation on human well-being

Sea Level and Gravimetry
Faculty
Isabella Velicogna

Employs advanced multi-sensor geophysical techniques, including satellite time-variable gravity (GRACE), to study the mass balance of the Greenland and Antarctic Ice Sheets and glaciers worldwide

Sustainable Systems Analysis Lab
Faculty
Steve Davis

Uses a wide range of environmental and economic data and multidisciplinary approaches to analyze the impacts from and on food, water, and energy systems. Research projects are problem-driven and solutions-oriented

Czimczik Group
Faculty
Claudia Czimczik

Combines field observation with geochemical analyses to understand how climate and anthropogenic activities impact carbon cycling and storage in (Arctic) land ecosystems, air pollution, and the global carbon cycle.

Allison Group
Faculty
Steven Allison

Applying empirical and theoretical approaches to understand microbial processes under global environmental change

Faculty & Researchers
Jim Randerson
Professor of Earth System Science
jranders@uci.edu
Michael Goulden
Professor of Earth System Science
mgoulden@uci.edu
Sue Trumbore
Professor of Earth System Science
susan.trumbore@uci.edu
Paulo Brando
Assistant Professor of Earth System Science
pbrando@uci.edu
Saewung Kim
Associate Professor of Earth System Science
saewung.kim@uci.edu
Alex Guenther
Professor of Earth System Science
alex.guenther@uci.edu
Benis Egoh
Assistant Professor of Earth System Science
begoh@uci.edu
Steve Allison
Professor Ecology & Evolutionary Biology
allisons@uci.edu
Bill Reeburgh
Faculty Emeritus of Earth System Science
reeburgh@uci.edu
Isabella Velicogna
Professor of Earth System Science
isabella@uci.edu
Steve Davis
Professor of Earth System Science
sjdavis@uci.edu
Claudia Czimczik
Associate Professor of Earth System Science
czimczik@uci.edu

News

AGU announces Section Awardees and Named Lecturers, including ESS Professor Charlie Zender
Earth system scientists at UCI studied air trapped in compacted layers of Antarctic ice and snow to come up with some answers and a few new questions about the amount of molecular hydrogen in our…
Fires are burning in the West. The Caldor Fire in Lake Tahoe is making what you breathe more smoke than air, forcing thousands to evacuate. Find out what some scientists from the UCI Department of…

The Department of Earth System Science acknowledges our presence on the ancestral and unceded territory of the Acjachemen and Tongva peoples, who still hold strong cultural, spiritual and physical ties to this region.