2002-05-03_GENERAL DOCUMENTS - C1981017

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 5/3/2002
• Doc Name: Bid Documents ‎(IMP)‎ 2002 Weed Bid
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

Sutey Reference Area #2
Absolute and Relative Cover Sample Means; 1998 -2001
1998 1999 2000 2001
Absolute Noxious Cover 14.6% 5.6% 9.8% 2.6% *
Relative Noxious Cover 26.4% 20.9% 23.1% 9.3%
Absolute Grass Cover
Relative Grass Cover
Absolute Forb Cover
Relative Forb Cover
4.4% 4.4% 19.0% 20.2%
7.8% 16A% 44.8% 72.1%
37.2% 16.6% 13.6% 5.2%
67.4% 61.9% 32.1% 18.6%
Total Vegetation Cover 55.2% 26.8% 42.4% 28.0%
*Reduction in noxious weed cover between 1998
and 2001 is significant at the 99% level of
statistical confidence.
Figure 3 - Sutey Reference Area #2 Absolute Cover
Trends; 1998 -2001
60.0%
50.0%
40.0%
30.0%
20.0%
10.0%
0.0%
1998 1999 2000 2001
-� Total Vegetation
Cover
-II- Non - noxious Forb
Cover
-A-- Grass Cover
x Noxious Species
Non - noxious forbs and noxious species cover declined from
1998 to 2001. Grass cover increased but the increase in
grass cover has not offset the decline in forb and noxious
species cover; resulting in a significant decline in total
vegetation cover between 1998 and 2001.