The Heath and Marjorie Angelo Coast Range Reserve protects 7,660 acres of  the upper watershed of South Fork of the Eel River in Mendocino County for university-level teaching and research. The Angelo Coast Range Reserve was the first gift to The Nature Conservancy west of the Mississippi, and for many years, the largest (see site history). Today, it is one of 39 protected natural areas  in the University of California Natural Reserve System, and is managed through the U.C. Berkeley campus.

Since Heath and Margorie Angelo protected their land in the 1930s, the population of California has increased over six-fold.  The Angelo gift, along with the 17 sq. km Elder Creek basin (designated as an area of critical ecological concern by the Bureau of Land Management)  together constitute one of the largest continuous tracts of undeveloped coastal conifer forest remaining in California.  The reserve protects 5 km of the upper South Fork Eel River, four undisturbed tributary watersheds, mixed conifer-broad-leaf forests, meadows on river terraces, and bands of chaparral at higher elevations.

Angelo Reserve is located in the Eel River Watershed which spans 3 counties in coastal northern California.

Recent Posts

Research in Angelo- Dr. Sarah Kupferberg

Dr. Sarah Kupferberg’s research is focused on food web ecology, amphibian population biology, and conservation of aquatic ecosystems in California. A particular interest of Dr. Kupferberg is the effects of dams and diversions on the physical and biotic conditions for wildlife. To investigate these issues, she conducts field research and experiments in rivers with hydroelectric projects, drinking water reservoirs, and flood control projects. Dr. Kupferberg is also applying her extensive knowledge of aquatic ecosystems at the policy level, reviewing stream restoration plans and working with engineers to facilitate designs that are compatible with hydraulic and biological needs.

Angelinos and ERRP volunteers have worked together with Dr. Kupferberg to count (and rescue!) egg masses which Foothill Yellow-legged Frogs lay in the river every spring.  These tennis-ball sized black speckled jelly balls are much more conspicuous than the adult frogs. What do you notice first in the photo below?

Conveniently for biologists interested in conserving this species (which is currently under review for protection by the Federal and California Endangered Species Act), adult females lay one clutch of eggs each spring. A census of clutches thus provides an index of the total size of the breeding population. Repeating the counts annually can indicate if populations are growing or declining. In the case of the Angelo Reserve, the population has fluctuated over the last 25 years, but remains basically stable. In contrast, since 2012 we have been observing a growing population along the banks of the South Fork Eel- this is where the California State Parks stopped operating the Benbow Dam in 2016 to impound the river and create a summer lake.  In the Spring of 2016 in advance of the de-construction of the Benbow Dam, ERRP volunteers and Angelinos relocated 100’s of egg masses (10,000’s of thousands of tadpoles!) out of harm’s way. Now that the high flows from winter 2017 have reconfigured the gravel bars at the restored dam site. We will monitor how the frogs respond.

  1. The Willits Hub Fish & Aquatics Restoration Day Comments Off on The Willits Hub Fish & Aquatics Restoration Day
  2. Mary Power and Gabe Rossi, and the stalwart student teams doing Eyes on the Eel surveys: The Movie. Comments Off on Mary Power and Gabe Rossi, and the stalwart student teams doing Eyes on the Eel surveys: The Movie.
  3. Listening to the forest breathe: monitoring tree trunk sap flow and size Comments Off on Listening to the forest breathe: monitoring tree trunk sap flow and size
  4. Prof. Mary Power Speaks at USGS Pacific Regional Colloquium Comments Off on Prof. Mary Power Speaks at USGS Pacific Regional Colloquium
  5. Angelo and Eel River CZO on local radio Comments Off on Angelo and Eel River CZO on local radio
  6. Climate extremes and the Critical Zone Comments Off on Climate extremes and the Critical Zone
  7. Turbidites and rip-up clasts in Elder Creek Comments Off on Turbidites and rip-up clasts in Elder Creek
  8. Measuring stream discharge with the salt dilution technique Comments Off on Measuring stream discharge with the salt dilution technique
  9. Phil G encounters invaders in Hunter’s Pool, just downstream from Angelo Comments Off on Phil G encounters invaders in Hunter’s Pool, just downstream from Angelo