High Sierra. Montane communities with local subalpine elements; granite balds with herbs and low shrubs; mature Red Fir forest; large wet and dry meadow complex with a few boggy spots, fringing Willows and Mountain Alders.
West-slope Sierra Nevada. Mosaic of xerophytic vegetation (Goldencup Oak and Manzanita) and moist slopes with mixed mesic forest (including Douglas Fir, Ponderosa Pine, and Sugar Pine); site also includes a large wet meadow with boggy areas.
Sierra Foothills. Deep canyon with mixed serpentine and metasedimentary geology. Canyon Live Oak woodland with mesic mixed lower-montane forest including Douglas Fir, Incense Cedar, and Ponderosa Pine.
Willow Slough is the name for the sampling route of my Fourth of July Butterfly Count (program run by the North American Butterfly Association). It comprises California annual grassland, some riparian vegetation, and a channelized floodplain whose vegetation has varied over the sampling years depending on seasonal flooding, fire, and management for flood control. It is basically a combination of annual and perennial floodplain vegetation with riparian and tule-marsh elements.