Pesticides from California’s Central Valley farms are found in Pacific chorus frogs living in pristine Sierra Nevada national parks.
Source: Pesticides Contaminating Critters in California’s National Parks
Scientists first noticed sharply declining frog populations in the Sierra Nevada starting in the 1980s. (The problem is global. Amphibians everywhere are suffering steep population losses and strange deformities.) Earlier studies by the USGS researchers found toxic pesticide concentrations in several frog species living in the national parks.
I have been saying for a long time that it would be nice to have a five or ten mile pesticide exclusion zone around our national parks. I would like to see this for many reasons but certainly one of the biggest reasons is the pesticide creep into our more or less pristine habitats.
Just an idea