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Sign for one of the DRAGNet plots indicating it received the disturbance treatment

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Disturbance and Resources Across Global Grasslands (DRAGNet) at Jasper Ridge

In 2023, Jasper Ridge joined a global network of research sites examining grassland responses to disturbance.  The Jasper Ridge site is being studied by Laureano Gherardi and Jorge Ramos, who chose a location especially suited to outreach and training—annual grassland near the visitors’ parking a

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Ecological specialization of cryptic species on a serpentine outcrop

For plants, the soil environment is a major habitat factor and can be extremely important in plant speciation. Jasper Ridge is home to an extensive serpentine outcrop occupied by two superficially indistinguishable species of Lasthenia(Asteraceae), L. californica and L. gracilis.

Graphical illustration of experimental design for study of oak seedling establishment

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Experimental study of oak seedling establishment

The purpose of this project is to improve the science underpinning conservation and restoration practices in oak savannas of California and other areas with a similar Mediterranean climate.  California’s oak savannas and open woodlands are diverse ecosystems and valuable cultural landscapes.  How

Soil gas sampling to determine soil hydrogen concentrations

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Geologic hydrogen in western California

In the search for clean, renewable energy sources, one might not think to look within a biological preserve.  However, JRBP’s serpentinite bedrock—the substrate that gives rise to serpentine wildflower displays—may help explain a major source of natural, clean-burning hydrogen.  Serpentinization

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Herbivory on soap plant (Chlorogalum pomeridianum)

Soap Plant, Chlorogalum pomeridianum, is an abundant, large bulb plant in many areas of Jasper Ridge. It is subject to substantial herbivory of both its leaves and inflorescence. In February 2009 Rodolfo Dirzo began a study of herbivory on this species at 4 sites across Jasper Ridge.

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