Page 12

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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,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

Page Metadata

Title Page 12
Description 12 IS UTAH SAHARA BOUND? to Carson Valley, Nevada. His report contains numerous references to the vegetation seen along the route. He describes the barren, level, almost varnished playa bottoms where alkali excludes even the most salt-tolerant plants and the greasewood fringes of these playa lakes as we see them today, but on well drained slopes he notes sagebrush well mixed with various kinds of grasses. Of Pleasant Valley, located near the Utah-Nevada boundary, Simpson says, "Pleasant Valley which is very narrow, contains grass all along it, but no water above the spring." Scores of quotations from others who knew Utah more than a century ago could be added in support of the thesis that grass was originally an important and conspicuous element of the foothill vegetation. One closing statement from Gilbert's12 monograph of Lake Bonneville is important in indicating the trends of foothill succession in the late seventies. "In the virgin condition most lowland valleys and all upland valleys were covered by grass and other herbaceous vegetation. These have been eaten off by the herds of the white man, and in their place has sprung up a sparse growth of low bushes between which the ground is bare." Field Investigations Let us examine now a few summaries of recent field investigations of desert areas. These were designed to ascertain the changes which have taken place both in the character of the vegetation and in the grazing capacities of the various range types as a consequence of human influences. In 1932 Pickford19 published a report of researches comparing the forage of areas within the sagebrush foothill belt of the eastern Great Basin area, which had been heavily utilized, with ecologically similar land that had experienced slight or no grazing use over periods from 5 to 40 years. These preserved areas were chiefly unused portions of cemeteries upon which the vegetation had been left in its natural condition or small uncultivated areas from which grazing had been excluded for many years. Thirty-three such selected plots were located, some of which had been subjected to burning. Pickford was therefore able to divide his studies into (1) unburned, ungrazed plots, (2) burned, ungrazed, (3) unburned and grazed, and (4) burned and grazed. Following are his conclusions of these comparisons: "Observations show that areas of spring-fall range, long protected from grazing and fire, such as cemeteries and field corners, support a good cover of plants palatable to livestock. The chief forage plants on these areas in every case in four districts studied include highly palatable perennial grasses, chiefly blue bunch wheat grass (Agropyron spicatum), beardless wheat (A. inerrne), blue stem wheat (A. smithii), Sandbergs blue grass (Poa sandbergii), and Nevada blue grass (P. nevadensis). Perennial grasses represent 49 to 81 percent of the total plant cover. Sagebrush {Artemisia triden-tata) is unimportant in such areas, occupying an average of slightly less than 10 percent of the plant cover. Annual grasses, principally
Format image/jpeg
Identifier 012-RNLT-CottamWP_Page 12.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 319701
Reference URL