WMOD00304

• Project Name: Sierra Ecology Project
• Title: The Sierra Ecology Project - Volume I - Workshops I, II and III
• Date: 5/11/1978
• Weather Modification - Doc Type: Report

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TIle Sierra Ecology Project,
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REPGR-;- ~~C.

James L. Smith, et al.

9. PERFORMING ORGANiZATION NAME AND ADDRESS

:0. WORK UNIT ~O.

Pacific Southwest Forest and Range Experiment
Station, Forest Service
POBox 245
Berkeley CA 94701
12, SPONSORING AGENCY NAME AND ADDRESS

11. CONTRACT OR GRANT NO,

6-07-DR-20010

13, TYPE OF REP'JRT .AND PE::<:O::
COVERELJ

Office of Atmospheric Resources Management
Bureau of Reclamation
POBox 25007
Denver CO 80225
15. SUPPLEMENTARY NOTES

Workshop Analyses, 1977

14. SPONSORING AGENCY CODE

16. ABSTRACT The possible effects of the proposed 5- to 7-year SCPP (Sierra
Cooperative Pilot Project) cloud seeding research program on ecological com-
.~onents in the Sierra Nevada, Calif., were examined and analyzed at three
~orkshops. In workshop I, six scientists evaluated possible direct and indi
~ect effects of a weather modification pilot project on major forest insects
and diseases of the ARB (American River Basin). The work group proposed
research and monitoring needs an~ concluded that the SCPP, with an average
10- to IS-percent increase in precipitation over the life of the project,
will not have a major impact on forest insects and diseases. Minor, benefi-
cial effects are expected due to decreased drought stress on plants. In wor
shop II, eight scientists evaluated possible effects of the pilot project Upl n
vegetation of the ARB, including rare and endangered plant species. Other
human activities were also considered: Research and monitoring recommenda-
tions were made. The work group concluded that the increase in precipitatio
would not significantly change vegetation growing well within its ranges.
Minor changes might occur in vegetation now growing at the limits of its
ranges. In workshop III, six scientists evaluated project effects upon deer
other animals, and their habitat in the ARB. Research and monitoring recom-
mendations are given. The group concluded that the effects of weather mod-
ification would probably be beneficial to deer herds and their habitats.
17. KEY WORDS AND DOCUMENT ANALYSIS
a, DESCRJPTORSn/ *cloud seeding/ *weather JOOdification/ *environmental effect. ~/
environmental hydrology/ winter orographic storms/ snowpacks/ small animals
(mammals)/ droughts! *meteorology/ forest insects and diseases/ vegetation
effects/ *deer/ habitats/ *ecology/ *climatology! environmental evaluation/
social aspects
b, IDENTIFfERS--/ Sierra Nevada/ American River Basin/ San Juan Ecology Study/
Sierra Cooperative Pilot Project/ Project Skywater/ Sierra Ecology Project
c. COSATf Field/Group 04B COWRR: 0402.1
18, DISTRIBUTION STATEMENT
Available (rom the Notional Technical Information Service. Operations
Division, Sprinfi(ield. Virginia 22151,

13, SECURITY CLASS
(THIS REPORTl
UNCLASSIFIED
2G. SECURITY '~LASS 22.
IT'iIS p~GE)
UNCLASSIFIED

21, ~1O, OF PAGE=:

221

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