Chapter 3 - Natural Resources - Marine Corps Base Camp Pendleton
Chapter 3 - Natural Resources - Marine Corps Base Camp Pendleton
Chapter 3 - Natural Resources - Marine Corps Base Camp Pendleton
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MCB <strong>Camp</strong> <strong>Pendleton</strong>, California<br />
DISTRIBUTION<br />
Global<br />
Thread-leaved brodiaea is a California endemic with a historic range that extends from the<br />
foothills of the San Gabriel Mountains at Glendora (Los Angeles County), east to<br />
Arrowhead Hot Springs in the western foothills of the San Bernardino Mountains (San<br />
Bernardino County), and south through eastern Orange and western Riverside Counties to<br />
Carlsbad in northwestern San Diego County, California.<br />
Regional<br />
A small, isolated population of thread-leaved brodiaea is situated just west of Rancho<br />
Bernardo in central San Diego County (Morey 1995; CDFG 1997). Fifty-one populations<br />
of thread-leaved brodiaea are<br />
presumed extant. These populations<br />
are clustered in the expanding cities<br />
of Vista, San Marcos, and Carlsbad<br />
(9 populations), in the vicinity of the<br />
Santa Rosa Plateau (6 populations),<br />
and the remaining 36 populations are<br />
scattered throughout Orange, Los<br />
Angeles, Riverside, San Bernardino,<br />
and San Diego counties. Threadleaved<br />
brodiaea occupies an<br />
estimated 825 ac of habitat. Of this<br />
habitat, 40% is reported from a single<br />
area, Miller Peak just north of the<br />
<strong>Base</strong>. The majority of the populations<br />
are within 2- to 10-ac patches.<br />
MCBCP<br />
On <strong>Camp</strong> <strong>Pendleton</strong>, thread-leaved<br />
brodiaea has been found at 22 general<br />
localities, within which may be<br />
multiple sites. Thread-leaved<br />
brodiaea has been located in Alfa<br />
One, Bravo One, Bravo Two,<br />
FIGURE 3-41. BRODIAEA FILIFOLIA LOCATIONS<br />
Charlie, Golf, India, Kilo One,<br />
November and Oscar Two training<br />
areas, as well as the 52 Area and at the Rodeo Grounds (see Figure 3-40). For detailed<br />
information on the thread-leaved brodiaea and its management on <strong>Base</strong> see Appendix F,<br />
Section F.21.<br />
3.2.5. Critical Habitat<br />
When a species is proposed for listing as endangered or threatened under the ESA, the<br />
USFWS considers whether there are areas of habitat it believes are essential to the species’<br />
conservation (i.e., recovery) and if those areas warrant designation as critical habitat. The<br />
term “critical habitat” for a threatened or endangered species is defined in Section 3(5)(A)<br />
3-78 <strong>Chapter</strong> 3 – <strong>Natural</strong> <strong>Resources</strong>