Page 13

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Title Is Utah Sahara Bound?
Subject Agriculture--Utah; Land use--Utah
Description The 11th Annual Frederick William Reynolds Lecture.
Creator Cottam, Walter Pace, 1894-
Publisher Extension Division, University of Utah
Date 1947-02-19
Date Digital 2008-05-29
Type Text
Format image/jpeg
Digitization Specifications Original scanned on Epson Expression 10000XL flatbed scanner and saved as 400 ppi uncompressed tiff. Display images generated in PhotoshopCS and uploaded into CONTENTdm Aquisition Station.
Resource Identifier http://content.lib.utah.edu/u?/reynolds,458
Source LD5526 .U8 n.s. v.37 no.11
Language eng
Relation Digital reproduction of "Is Utah Sahara Bound?," J. Willard Marriott Library Special Collections
Rights Digital Image Copyright University of Utah
Metadata Cataloger Seungkeol Choe; Ken Rockwell
ARK ark:/87278/s6w66hr0
Setname uu_fwrl
Date Created 2008-07-29
Date Modified 2009-03-13
ID 319731
Reference URL https://collections.lib.utah.edu/ark:/87278/s6w66hr0

Page Metadata

Title Page 13
Description EVIDENCE OF VEGETATIONAL CHANGE 13 downy brome (Bromus teetotum), weeds, and shrubs other than sagebrush are all relatively unimportant. "Observations on promiscuously burned areas which have long been protected from grazing indicate that burning tends to deplete the stand of perennial grasses and to allow annual grasses, chiefly downy brome, to increase sharply in density. The sagebrush cover is largely destroyed by burning. The total plant density of burned, protected plots is about the same as on those totally protected. There is, however, a slight increase in the grazing capacity of the burned, protected plots. "Observations on areas which have been subjected both to promiscuous burning and to heavy grazing show that a combination of these factors has seriously reduced the total density of the plant cover, and has depleted the stand of perennial grasses nearly 85 percent. The sagebrush cover likewise has been reduced 80 percent. Annual grasses and poor perennial and annual weeds are predominant. These changes in the plant cover due to fire and grazing have caused a reduction of over 50 percent in the grazing capacity of the spring-fall range. "Observations on areas subjected to heavy grazing only show in every case a serious depletion of perennial grasses, a decided increase in density of sagebrush, in some instances a sharp increase in the density of poor perennial weeds and annual grasses and a decrease in the total plant density. These vegetational changes have resulted in reductions of 40 to 75 percent in the grazing capacity of the areas studied in four districts." Many sources of evidence point unmistakably to the fact that tremendous areas of the Bonneville Desert formerly occupied by grass have given way almost entirely to sagebrush. Only casual observations are necessary to see that much of the foothill sagebrush areas are in turn being invaded by junipers. Quantitative studies of these successional phases have been made at the Mountain Meadows7 situated about 50 miles west of Cedar City, Utah, on the divide of the Colorado-Great Basin drainage. This particular area was selected for intensive study because fairly accurate descriptions of it at the time of settlement were available. As early as 1844, Captain John C. Fremont11 experienced the delights of this mountain retreat, and of it said, "We found here an extensive Mountain Meadow, rich in bunch grass and fresh with numerous springs of clear water, all refreshing and delightful to look upon. . . . The meadow was about a mile wide, and some ten miles long, bordered by grassy hills and mountains." Parley P. Pratt arrived at the Mountain Meadows April 24, 1851, on his way to California, and to him we owe the best description of this historic spot as the first white man knew it. He says: "After passing a few miles of very hilly road we came down a small stream, which heads in numerous spring meadows near the rim of the basin, on the divide between it and the Colorado. Here we camped to rest Saturday and Sunday. "This little mountain paradise was, by the present road, three hundred and eleven miles from the Great Salt Lake City, and was altogether the most beautiful place in all the route. Some thousand or fifteen hundred acres of bottom,
Format image/jpeg
Identifier 013-RNLT-CottamWP_Page 13.jpg
Source Original Manuscript: Is Utah Sahara Bound? by Walter P. Cottam.
Setname uu_fwrl
Date Created 2008-07-29
Date Modified 2008-07-29
ID 319702
Reference URL https://collections.lib.utah.edu/ark:/87278/s6w66hr0/319702