2005 California Desert Exotic Mustard Roadside Survey

U.S. Hwy 395 - April 2005 - Raw data.

Surveyed and Copyright © 2005 by Craig Dremann

Box 361, Redwood City, CA 94064 - (650) 325-7333


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Below, San Bernardino County PM 22, both exotic invasive mustards on east side of US 395


U.S. Hwy 395 - April 2005 - Raw data.

Results of a 70 mph windshield survey (or whatever the local speed limits were), of three exotic Mustards: Either not present; is present along roadsides or in medians; or is outside of the roadside to the fence line or has moved from the roadsides to infest adjacent land.

NS = None Seen. None of the three exotic Mustards of concern were seen along roadside ditches; or if divided highway, also not seen in the roadside median, or in lands adjacent to the road.

RS = Road Sides were infested. MED = In divided highways, in medians.

DES = One or more Exotic Mustards have moved from the roadsides into the desert, agricultural areas, or other lands adjacent to the roadsides. FL = Only found along the highway cyclone-fence line, but is far enough off the roadside to pose an immediate problem for the lands adjacent to the fences. At the time of the survey, did not appear to be moving off the fence line yet.

SPECIES PRESENT:

BT = Brassica tournefortii = Sahara Mustard
SL = Sisymbrium irio = London Rocket
SO = Sisymbrium orientale = Indian Hedge Mustard

PM = Post miles along highways, and numbers indicate the averages found not just at each post mile, but for 1/2 mile on either side of the post mile marker.

(Landmarks and other notes on other exotics or native plants in parentheses)



SAN BERNARDINO COUNTY, US Hwy. 395 , north to junction Cal.Hwy. 14

Raw data April 4, 2005 and April 22, 2005.

Start Jct. I-15 (PM 4.50)

4.50 - NS - (Phacelia and exotic foxtails)
5 - NS
6 - NS - (Joshua tree/creosote forest)
7 - NS
8 - NS
9 - NS
10 - NS
11 - NS
12 - RS - BT scattered
13 - RS - BT & SL scattered
- Truck Stop
14 - RS - BT & SL scattered
15 - RS - BT & SL scattered
16 - RS - BT & SL scattered
17 - RS - BT & SL thick
18 - DES - BT - solid along roadsides
19 - DES - BT - solid along roadsides
20 - DES - BT - solid along roadsides
21 - DES - BT - solid along roadsides
22 - DES- BT, RS - SL - both mustards on east side of highway
23 - DES- BT, RS - SL - both mustards on east side of highway

24 - RS - BT & SL solid
25 - RS - BT & SL solid
26 - RS - BT & SL solid
Shadow Mountain
27 - RS - BT & SL solid
28 - RS - BT & SL solid
29 - RS - BT & SL solid
30 - RS - BT & SL solid
31 - RS - BT & SL solid
32 - RS - BT & SL solid
33 - RS - SL solid
34 - NS - (solid Amsinckia)
35 - RS - SL scattered
36 - RS - SL solid
37 - RS - BT & SL
38 - RS - SL - (plus Indian Rice grass)
39 - DES - BT solid one mile into the desert
40 - RS - BT solid
41 - NS - (Indian Rice grass)
42 - DES - BT scattered, plastered against creosotes
43 - RS - BT & SL
44 - RS - SL common
45 - RS - BT & SL
46 - RS - BT & SL

Kramer Jct. US 395

47 - RS - SO & SL
48 - RS - SO & SL scattered
49 - RS - SO & SL solid along graded edge
50 - RS - SO & SL solid along graded edge
51 - NS - Road edge not graded
52 - NS - Road edge not graded
53 - NS - Road edge not graded - Desert dandelion

54 - RS - SO & SL scattered
55 - RS - SO & SL scattered (Call box)
56 - RS - SO & Sl scattered
57 - RS - SO & SL scattered (Call box)
58 - RS - SO & SL scattered
59 - RS - SO & SL very solid
60 - NS - Solid Amsinckia
61 - RS - SO scattered (Call box)
62 - RS - SO scattered
63 - RS - SO scattered (Call box)
64 - RS - SO thick in places
Turn off for California City
65 - RS - SO scattered
66 - RS - SO scattered
67 - RS - SO scattered
68 - RS - SO scattered (Desert stipa)
69 - RS ditch - SO solid in places
70 - RS ditch - SO solid in places
71 - RS ditch - SO solid in places (Desert stipa)
72 - Ghost town - Red Mtn. - SO solid
73 - RS - SO scattered (Road to Trona)

73.52 County line

KERN COUNTY

0 - NS - Town Johnannesburg
1 - NS
Randsburg Road
2 - NS
Elevation 3,000 feet
3 - RS - BT very scattered
4 - RS- BT scattered
Railroad crossing
5 - RS- BT scattered
Garlock Road
6 - RS- BT scattered
7 - RS- BT scattered

8 - NS (Desert stipa thick in places)
9 - NS (Goldfields, exotic red brome starts)
10 - NS (Goldfields in desert)
11 - NS (Desert stipa scattered)
12 - NS
13 - NS
14 - NS
15 - NS (Road to Ridgecrest)
16 - NS
17 - NS (Solid lupines with goldfields)
18 - NS
19 - NS
20 - NS (Bowman Road)
21 - NS - RS - SL rare, one single BT plant
22 - NS
23 - NS
Road to Ridgecrest Cal. 178
24 - NS
25 - NS
26 - NS
27 - NS (Inyokern turnoff)
28 - NS (Datura)
29 - NS
Junction Cal. 14 - Goes from 4 lanbes to 2 lanes.
30 - NS (Encelia)



Updated December 23, 2005 - BACK TO MAIN PAGE