Vegetation

Point Blue Conservation Science has surveyed grassland vegetation across TomKat Ranch since 2011, with an updated monitoring effort in summer of 2025. We examine patterns in the current vegetation cover and diversity, changes over time, and ranch-wide vegetation trends.

Updated March 31, 2026

Achieved SMART Goals

Increase perennial grass: Average of 20% native perennial grass cover on the west side.

Maintain covered soil surface: All pastures average <5% bare ground across the ranch.

Point-level vegetation cover

In the map below, each point represents a vegetation sampling location. Toggle between vegetation types to see percent cover for each functional group. Darker colors indicate higher cover for the selected vegetation type. Only data for the most recent sampling event (2024-2025) are displayed.

Choose one metric at a time at bottom left. Click on any of the survey points to learn more.


Glossary

Perennial grasses: Grasses that can survive for many years, whereas annual grasses germinate from seed, reproduce, and die each year. Perennial grasses generally turn green sooner, stay green longer, produce more biomass, and are more drought-tolerant than annual grasses. Their deep roots stabilize soil, improve water infiltration, and recycle nutrients.

Native grasses: California native grasses are perennials, which have been largely displaced by exotic annual grasses.

Forbs: Herbaceous flowering plants that are not grasses, sedges or rushes.

About this page

This interactive web page was produced in R using rmarkdown and the packages leaflet and plotly. The code used to produce this web page is available on Github.

For more information

Email the Point Blue Soils Team

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