Variation in annual run-off in the Rocky Mountain region: Chapter A in Contributions to the hydrology of the United States, 1923-1924

1925 ◽  
Keyword(s):  
United States ◽  
Rocky Mountain ◽  
The United States ◽  
Mountain Region ◽  
Rocky Mountain Region ◽  
Run Off

scholarly journals Preliminary Studies on Propagation of Osha

2004 ◽  
Vol 14 (1) ◽  
pp. 141-143 ◽  
Author(s):  
Karen L. Panter ◽  
Rebecca E. Ashley ◽  
Karin M. Guernsey ◽  
Caroline M. Johnson
Keyword(s):  
United States ◽  
Vegetative Propagation ◽  
Rocky Mountain ◽  
The United States ◽  
Mountain Region ◽  
Perennial Plant ◽  
Rocky Mountain Region ◽  
In The Wild ◽  
Ligusticum Porteri ◽  
Seed Propagation

Osha (Ligusticum porteri) is a perennial plant native to the Rocky Mountain region of the United States and has been used as a medicinal herb to alleviate certain ailments caused by viruses, yeasts, and other microbes. It is generally harvested in the wild and is believed to be in danger of overharvest. The objectives of this study were to determine if osha could be grown successfully from seeds, seeds still attached to umbels, root cuttings, and/or vegetative crown cuttings. Seeds were harvested from the wild in Fall 2000. Roots were collected in May 2001. Seeds, either detached or attached to umbels, were given one of four treatments: 1) no stratification; 2) 6 weeks at 4.4 °C (40 °F); 3) 4 weeks each alternating 4.4 °C, then 12 hour 20.0 °C (68 °F) and 12 hours 30.0 °C (86 °F); or 4) 12 weeks at 4.4 °C. Roots were divided into crown cuttings, each containing a vegetative node, and were placed on a 21.1 °C (70 °F) mist propagation bench until rooted. Twelve weeks of stratification, whether seed was detached or attached to umbels, were beneficial for germination of osha seeds, but only gave about 11% emergence. Propagation from root cuttings was not successful. Propagation via vegetative crown cuttings was most successful, with 90% of cuttings rooting. Vegetative propagation of osha appears to be the most promising method, preferable over seed propagation.

scholarly journals Assessing Watershed-Wildfire Risks on National Forest System Lands in the Rocky Mountain Region of the United States

Water ◽  
2013 ◽  
Vol 5 (3) ◽  
pp. 945-971 ◽  
Author(s):  
Matthew Thompson ◽  
Joe Scott ◽  
Paul Langowski ◽  
Julie Gilbertson-Day ◽  
Jessica Haas ◽  
...  
Keyword(s):  
United States ◽  
Rocky Mountain ◽  
The United States ◽  
Mountain Region ◽  
National Forest ◽  
Rocky Mountain Region

Host Associations and Incidence of Diuraphis spp. in the Rocky Mountain Region of the United States, and Pictorial Key for Their Identification

2010 ◽  
Vol 103 (5) ◽  
pp. 1875-1885 ◽  
Author(s):  
Gary J. Puterka ◽  
Robert W. Hammon ◽  
John D. Burd ◽  
Frank B. Peairs ◽  
Terri Randolph ◽  
...  
Keyword(s):  
United States ◽  
Rocky Mountain ◽  
The United States ◽  
Mountain Region ◽  
Rocky Mountain Region ◽  
Host Associations

scholarly journals IV.—Comparison of the Principal Forms of Dinosauria of Europe and America

1889 ◽  
Vol 6 (5) ◽  
pp. 204-210 ◽  
Author(s):  
O. C. Marsh
Keyword(s):  
United States ◽  
Rocky Mountain ◽  
The United States ◽  
Mountain Region ◽  
Geological Survey ◽  
Entire Group ◽  
United States Geological Survey ◽  
The Past ◽  
Rocky Mountain Region

The remains of Dinosaurian reptiles are very abundant in the Rocky Mountain region, especially in deposits of Jurassic age, and during the past ten years the author has made extensive collections of these fossils, as a basis for investigating the entire group. The results of this work will be included in several volumes, two of which are now well advanced towards completion, and will soon be published by the United States Geological Survey.In the study of these reptiles, it was necessary to examine the European forms, and the author has now seen nearly every known specimen of importance. The object of the present paper is to give, in few words, some of the more obvious results of a comparison between these forms and those of America which he has investigated.

NOTES ON THE BIOLOGY OF THE GREAT BASIN TENT CATERPILLAR, MALACOSOMA FRAGILIS STRETCH (LEP., LASIOCAMPIDAE)

1939 ◽  
Vol 71 (3) ◽  
pp. 76-77
Author(s):  
Ralph B. Swain
Keyword(s):  
United States ◽  
Great Basin ◽  
Rocky Mountain ◽  
The United States ◽  
Mountain Region ◽  
Deciduous Trees ◽  
Rocky Mountain Region ◽  
Trees And Shrubs ◽  
Tent Caterpillar

The great basin tent-caterpillar is the most abundant form of Malacosoma found in the Rocky Mountain region of the United States. In Colorado, the species is often a serious pest of the aspen. It feeds upon a wide variety of deciduous trees and shrubs. In the foothills, Rhus trilobata and Prunus melanocarpa are frequently attacked. Whole aspen groves at higher altitudes are often defoliated by this species. In the mountains, the migrating larvae have occasionally been so numerous as to stop locomotives by greasing the rails with their crushed bodies.

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