Environmental Systems Science courses combine classroom learning with fieldwork, lab experiments, and real data. You won't just hear about environmental science—you'll do it.
Core Areas
| Hydrology and Climate |
How water moves through landscapes and atmospheres, and why it matters for California's future. |
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Environmental Chemistry
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The chemical processes that shape air, water, and soil quality. |
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Ecology
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How species interact with each other and their environments |
| Microbiology |
The invisible organisms that drive nutrient cycles and shape ecosystems. |
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Soil Science
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The living layer beneath our feet that supports all terrestrial life. |
| Sustainable Agriculture |
The practices and systems that feed a growing world without compromising the land that sustains it. |
What Makes Our Courses Different
Field components Many courses include trips to the vernal pools, Sierra Nevada field stations, or local agricultural sites.
Real data You'll work with actual research data, not just textbook examples.
Small class sizes You'll know your professors and they'll know you.
Research integration Faculty bring their current research into the classroom, so you learn what's happening now, not just what made it into the textbook.
Flexibility Choose an emphasis in Earth and Climate Science or Ecosystem Science depending on your interests.
Three Emphases
Earth and Climate Science Focus on the physical processes that shape our planet—atmospheric science, hydrology, geology, and climate systems.
Ecosystem Science Focus on living systems—ecology, microbiology, soil science, and the interactions between organisms and their environments.
Education Focus on teaching, curriculum design, environmental literacy, and experiential learning to translate environmental science into meaningful learning experiences.
All paths share a common foundation and lead to the same degree.
Beyond the Classroom
Every ESS student participates in research, an internship, or service learning before graduating. Many students join faculty research labs as early as their second year. Others work with partners like the National Park Service, US Forest Service, or local conservation organizations.
Full Course Requirements
For complete degree requirements and course descriptions, see the UC Merced Course Catalog.
Earth and Climate Emphasis: Environmental Systems Science, Earth and Climate Science Emphasis, B.S.
Ecosystem Science Emphasis: Environmental Systems Science, Ecosystem Science Emphasis, B.S.
Education Emphasis: coming Fall 2026!
Sample Four Year Program
More information coming soon. Please meet with your advisors in the meantime
