My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
WSPC00811
CWCB
>
Water Supply Protection
>
Backfile
>
13000-13999
>
WSPC00811
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/26/2010 11:07:29 AM
Creation date
10/9/2006 2:21:57 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8200.700
Description
Colorado River Basin General Publications - Augmentation-Weather Modification
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
4/13/1983
Author
DOI-BOR
Title
CREST - Colorado River Enhanced Snowpack Test - Environmental Assessment and Finding of No Significant Impact
Water Supply Pro - Doc Type
Report/Study
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
47
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
Show annotations
View images
View plain text
<br />OOlll11S <br /> <br />"In the alpine setting, certain species subjected to <br />artificial snowdrifts produced seed of reduced germinabil- <br />ity. It is tentatively concluded that the Skywater experi- <br />mental program of winter snowpack augmentation will have no <br />discernible impact on herbaceous vegetation." [4, pp. 3-104, <br />3-105J <br /> <br />The Skywater Programmatic Statement concluded: <br /> <br />"No significant impact on the overall productivity of the <br />herbaceous community is expected. The main reason for this <br />expectation is the finding that species composition is <br />determined principally by minimum soil moisture during the <br />growing season, and that productivity of different species <br />in different settings is influenced by a variety of fac- <br />tors, including a slight delay in snow release data and a <br />delay in the date of exhaustion of winter moisture. <br /> <br />"Other outputs of the Skywater program such as instrument <br />and equipment installations, travel, and seeding agents, <br />are expected to have no significant impact on herbaceous <br />vegetation." [4, p. 3-108J <br /> <br />Long-term monitoring of the responses of vegetation to incremental <br />precipitation increases will be required to determine whether species <br />composition and productivity will be significantly affected. <br /> <br />Studies of the effects of precipitation increases on large and small <br />mammals were undertaken in the Medicine Bow Ecology Project [18], the <br />Sierra Ecology Project [19J, and the San Juan Ecology Project [14]. In <br />addition, Montana State University surveyed previous research on the <br />effects of weather components on big game. "Section 2, Ecological, <br />Wildlife and Biocommunities," of this report states: <br /> <br />"Various weather components seem to influence the activi- <br />ties of many big game species: 1. game species move to <br />areas of the most available forage; 2. game species move to <br />areas of the most nutritious forage; 3. relative humidity <br />affects the length of rest periOds which are longer on more <br />humid days and shorter on less humid days; 4. animals rest <br />in areas away from wind; 5. precipitation, unless accompa- <br />nied by wind, does not affect the activity of game species; <br />6. game species use higher elevation ranges during dry <br />summers; 7. game species are more observable during dry <br />summers because of lack of cover and search for preferred <br />food species; 8. winter snows decrease the availability of <br />total range, cover and food; g. low temperatures decrease <br />activities of game species; 10. winds of 15-25 mph and low <br />temperatures cause game species to feed later in the <br />morning; 11. low temperatures and snow depth force the <br />congregation of animals which increases their susceptibil- <br />ity to predation; 12. food availability eliminates many of <br /> <br />21 <br />
The URL can be used to link to this page
Your browser does not support the video tag.