The Online Journal of Natural History News in the Sierra Nevada
Abstract: Comparison of Periphyton and Microbial communities in the High Sierra watershed of California: Cattle grazed versus non-grazed areas
An abstract of a paper comparing the density of certain species of algae in cattle grazed watersheds and those without cattle. The Sierra Nevada is the primary watershed for a significant portion of California's drinking water, making this research topic increasingly important.
Pika are thriving in the Sierra Nevada and southwestern Great Basin
Vulnerability of pika habitat to global warming has been an escalating concern, causing speculation that the range of suitable pika habitat will contract upward in elevation as lower elevation site temperatures increase. Millar and Westfall's recent study suggests there may be good news for the ever-adorable pika. The natural summer cooling and winter warming of their rock-pile homes may be protecting them from climate change.
have all the Salmon gone?
in the Sierra Nevada Wilderness areas
percent of California's water comes from the Sierra Nevada mountains.
Once pristine lakes and streams are increasingly subject to increased
algal growth and eutrophication as a result of human caused nutrient
loading. Derlet and Ger examine the many sources for these excessive
Cattle grazing on public lands is increasingly being recognized as a source of pathogens entering our water supply as well as causing a wide variety of ecological impacts. CSERC examines some of these issues on the Stanislaus National Forest.
Carnivore Survey Finds that Wolverines (Gulo gulo)are
Likely Extirpated from Sequoia-Kings Canyon National Parks
Confirmed photos of a Wolverine at a bait station at Lake Tahoe created a flurry of publicity and hope that perhaps this rarest of California carnivores was making a comeback. A study done in Sequoia and Kings Canyon National Parks recently suggests that the California population, anyway, may be gone.
Sierra Nevada Crest National Parks:
To protect California's increasingly scarce wildlands and water sources, as well as expand recreational opportunities for California and the nation,the authors propose a set of new National Parks in the Sierra, stretching from Mt. Lassen in the north, to the Kern River in the south.
Analysis of the 7 July 2004
near Mt. Whitney?? In July of 2004, a funnel cloud was observed forming
over Rockwell Pass (elevation 11,600 feet) in Sequoia Canyon National
Park, just north of Mt. Whitney. It was also photographed touching
down. Recent analysis shows this to be the highest elevation tornado
observed in the US. The article is in PDF and requires Adobe
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