Calaveras Big Trees State Park, Ralston Classroom

2026-08-19T00:00:00-07:00
  • Glorious Trees-Alfred Russel Wallace in California – Seminar

    Calaveras Big Trees State Park, Ralston Classroom 1170 East Highway 4, Arnold, CA, United States

    Presented by author, Sal Manna This book is the until-now untold story of the 1887 visit to California of one of the most famous men of science in the world, the man who had conceptualized around the same time as Darwin the “survival of the fittest” cornerstone of natural selection, the lynch-pin for the theory of evolution. [...]

  • Drought and Bark Beetle-Caused Tree Mortality in the Sierra- Seminar

    Calaveras Big Trees State Park, Ralston Classroom 1170 East Highway 4, Arnold, CA, United States

    Dr. Christopher Fettig, Research Entomologist and Team Leader for the Forest Service, will speak on: Drought and Bark Beetle-caused Tree Mortality in the Sierra: Causes, Consequences and the Future". As a result of extensive levels of tree mortality in the central and southern Sierra Nevada due to bark beetle outbreaks, Governor Jerry Brown declared a state [...]

  • Searching for Gold Spot –The Wild After Wildfire – Seminar

    Calaveras Big Trees State Park, Ralston Classroom 1170 East Highway 4, Arnold, CA, United States

    Forests that have experienced fire are vibrant, dazzling, and full of life. While searching for the rare Black-backed Woodpeckers, which rely on these burned forests, biologists encounter a plethora of other wildlife such as deer, black bears, bobcats, sapsuckers, bluebirds, wrens, and raptors, including nesting Northern Goshawks and Spotted Owls and their chicks. The Black-backed [...]

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