A Study of the Vegetation of the Sandhills of Nebraska

A Study of the Vegetation of the Sandhills of Nebraska

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 edition. Excerpt: ... expression of this association as it is found in the sand-hills as contrasted with the more distinctly sod-forming habit that Pound and Clements (57) noted farther westward. Developmentally the spear-grass association is to be regarded as a later stage than the bunch-grass association of the sandier uplands. This stage may pave the way by still further accumulation of litter and humus for the later occupation of the hills by the shortgrass formation toward the west, or toward the east the final stage may be one of the more distinctly sodded associations of the prairiegrass formation. This intermediate position is very evident in many localities. The dominant species of the spear-grass association is Stipa comata. This western Stipa, with Koeleria cristata as a common associate, is controlling in many parts of the hills where wind action has been more or less conquered and where the bunch-grass association has been completely displaced over many square miles of rolling hills. The lessened wind action is shown by the relative scarcity of blow-outs. As a rule the substratum of this association is less sandy and contains more organic matter than that of the bunch-grass association. Andropogon scoparius and A. hallii are occasionally seen as relicts in the more sandy portions and along the borders of this association. Cactus viviparus Large areas of sandy hills bearing this sort of vegetation are to be found at present in Holt, Garfield, Rock, and Brown counties, and along the northern boundary of the sandhills in Cherry and Sheridan counties. These tracts are typically covered by a plant cover which is much less open than the bunch-grass land although here and there both of the dominant species show a poorly defined bunchgrass nature. The...show more

Product details

  • Paperback | 46 pages
  • 189 x 246 x 3mm | 100g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236510275
  • 9781236510273