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PLATES
| UNIVERSITY OF CALIFORNIA |
[GRINNELL-STORER] PLATE 13 |
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a. Margin of San Joaquin Valley
near Snelling, showing associations in Lower Sonoran Life Zone. View
taken in winter from earth bluffs northeast of town looking south across
cultivated and pastured river-bottom lands; a slough scatteringly
bordered with willows in middle distance, and Fremont cottonwoods
bordering Merced River in far distance (top).
b. The blue oak marks a conspicuous association several miles in
width along the foothills bordering the San Joaquin Valley. The view
here shown was taken in February in the Upper Sonoran Zone near Pleasant
Valley. In winter the mistletoe clumps in these trees are patronized for
berries by the Audubon Warbler, Western Robin and Western Bluebird;
throughout the year these trees are inhabited by such birds as the
California Woodpecker, Interior California Jay, Phainopepla, Plain
Titmouse, and Slender-billed Nuthatch (bottom).
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| UNIVERSITY OF CALIFORNIA |
[GRINNELL-STORER] PLATE 14 |
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a. Scene near Pleasant Valley in
May showing mixed brush and open forest associations in the Upper
Sonoran Zone. The principal tree is the digger pine. Here on the ground
were caught the Streator Wood Rat, Common and Boyle white-footed mice,
and Digger Pine Pocket Gopher; the trees were inhabited by such birds as
the Interior California Jay, Pacific Black-headed Grosbeak, and Western
Gnatcatcher; and in the greasewood brush (Adenostoma) topping the ridge
were the Bell Sparrow, Northern Brown Towhee, California Thrasher, and
Pallid Wren-tit (top).
b. View near the McCarthy ranch, three miles east of
Coulterville; altitude 3200 feet, at the lower edge of the Transition
Zone. Trees shown are yellow pines, and the brush plants are sticky
manzanita (Arctostaphylos mariposa) Photographed in June,
1915 (bottom).
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| UNIVERSITY OF CALIFORNIA |
[GRINNELL-STORER] PLATE 15 |
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a. Detailed view near Rocky Point
on base of talus slope on north side of Yosemite Valley; golden oak
association, Transition Zone. Inhabited by the California Wildcat, Boyle
White-footed Mouse, Streator Wood Rat, California Ground Squirrel,
Mariposa Chipmunk, California Gray Squirrel, Band-tailed Pigeon,
California Woodpecker, Western Skink and Coral King Snake; and, in
summer, by the Cassin Vireo and Black-throated Gray Warbler (top).
b. Shaded south margin of Merced River near El Portal, as
photographed in December; lower margin of Transition Zone. The habitat
of the Adorned Shrew and Sierra Cantankerous Meadow Mouse, and in
winter, of the American Dipper (bottom).
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| UNIVERSITY OF CALIFORNIA |
[GRINNELL-STORER] PLATE 16 |
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a. General view of lower part of
Yosemite Valley as taken looking east from the Big Oak Flat Road in
winter. At the left a talus slope clothed with golden oak; below, the
forest on the Valley floor, comprising yellow pine, sugar pine, and
black oak, and, in streamside tracts, black cottonwood. These areas
constitute markedly differing associations in the Transition
Zone (top).
b. Meadow on floor of Yosemite Valley near Rocky Point, as seen
in June; Transition Zone. Here were trapped the Yosemite Mole, Yosemite
Shrew, Yosemite Meadow Mouse, and Yosemite Pocket Gopher. The trees at
the right, black cottonwoods harbored such birds as the Willow
Woodpecker, Modoc Woodpecker, California Yellow Warbler, and Western
Warbling Vireo (bottom).
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