2005 California Desert Exotic Mustard Roadside Survey

Amboy Road - 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: Sahara mustard roads


Sahara mustard at the road-edge, with the native desert dandelions



Amboy Road - 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 will be in parentheses)



SAN BERNARDINO COUNTY, from Jct. I-40, south to 29 Palms, Cal. Hwy.62

Survey April 2, 2005, may be updated periodically.

(Odometer miles noted because PM markers not seen)

Start at Junction I-40

0-1 - RS - BT only along Interstate, fortunately, so far.
1 - NS - (Creosotes, des. dandelions)
2 - NS
3 - NS - (lots of butterflies)
4 - NS
5 - NS
6 - NS
7 - NS
8 - NS (Creosotes with lupines at road edge)
9 - NS
10 - NS
11 - NS

Junction of road to Amboy

12 - NS
13 - NS
14 - NS
15 - NS
16 - NS
17 - NS
18 - NS
19 - NS
20 - NS
21 - NS -
Lake Bed of Bristol Lake, playa.
22 - NS -
Lake Bed of Bristol Lake, playa.
23 - NS -
Lake Bed of Bristol Lake, playa.
24 - NS -
Lake Bed of Bristol Lake, water.
25 - NS -
Lake Bed of Bristol Lake, water.
26 - NS
27 - RS - BT scattered
28 - RS - BT & SL rare
29 - RS - BT scattered
30 - RS - BT scattered
31 - RS - BT very rare

32 - NS
33 - NS
34 - NS
35 - RS - BT scattered
36 - RS - BT thick in places
37 - RS - BT solid in places
38 - RS - BT solid in places
39 - RS - BT scattered
40 - RS - BT thick in places
41 - RS - BT thick in places
42 - RS - BT scattered
43 - RS - BT scattered
44 - RS - BT thick in places
45 - RS - BT scattered
46 - RS - BT scattered
46 - RS - BT scattered
47 - RS - BT scattered
48 - DES & RS - BT scattered
49 - DES & RS - BT scattered

50 - RS - BT thick in places
51 - RS - BT scattered
52 - DES & RS - BT scattered - Palms Restaurant
53 - RS - BT scattered
54 - RS - BT rare
55 - RS - BT
- Community Center
56 - DES & RS - BT thick plus 2 miles out into the desert
57 - DES & RS - BT thick plus 2 miles north out into desert (ends 57.6)
58 - DES & RS - BT thick plus one miles south into desert
59 - RS - BT rare
60 - RS - BT rare
29 Palms town sign
61 - RS - BT rare
62 - RS - BT scattered
63 - RS - BT scattered -
Utah Trail junction
64 - RS - BT -scattered
64.5 - town of 29 Palms

Jct. Cal. 62, town of 29 Palms



Updated December 23, 2005 - BACK TO MAIN PAGE