By Kathleen M. Wong, UC Natural Reserve System Streams hide an underwater world of tiny insects in a fantastically varied web of life. Though largely hidden from human view by rushing waters, these aquatic communities are every bit as complex as anything on dry land. Why species are found where within streams, however, remains rather […]
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Reserve Operations and COVID-19
During the unprecedented public health crisis posed by the spread of COVID-19, the UC Natural Reserve System supports the cancellation of any reservation to protect the health and safety of visitors and staff. Reserve visitation remains the authority of respective campus NRS and reserve staff. Reserves are empowered to make the determination to cancel reservations as needed on a case-by-case basis. COVID-19 Information for UC employees provides guidance for all University of California operations. We consider the well being of our community to be paramount, and enjoin all staff and visitors to continue our exemplary 55-year record of service and safety.
About us
The UC Natural Reserve System is a library of ecosystems throughout California. Most of the state's major habitat types are represented, from coastal tidepools to inland deserts, and lush wetlands to redwood forests. No other network of field sites can match its size, scope, and ecological diversity. The NRS offers outdoor laboratories to field scientists, classrooms without walls for students, and nature’s inspiration to all.By the numbers
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News and Highlights

Elephant seals measure “the Blob”
By Tim Stephens, UC Santa Cruz The North Pacific Blob, a marine heatwave that began in late 2013 and continued through 2015, was the largest and longest-lasting marine heatwave on record. A new study using data collected by elephant seals reveals that in addition to the well documented surface warming, deeper warm-water anomalies associated with […]

Researchers track juvenile elephant seals for insights into mortality rates
By Tim Stephens, UC Santa Cruz As young elephant seals grow up, males and females diverge dramatically in their size, diets, migration patterns, and even how likely they are to survive. A new research project led by Roxanne Beltran, assistant professor of ecology and evolutionary biology at UC Santa Cruz, is investigating how the increasing […]
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