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 />
detailed information on the western snowy plover and its management on <strong>Base</strong> see<br />
Appendix F, Section F.23.<br />
3.2.4.9. Pacific Pocket Mouse (Perognathus longimembris pacificus)<br />
FIGURE 3-21.<br />
PACIFIC POCKET MOUSE<br />
(PHOTO SOURCE: CHERYL S. BREHME, USGS)<br />
The Pacific pocket mouse (PPM) is a<br />
small (4.3 to 6 inches total length),<br />
pink-buff pocket mouse. It<br />
specializes in harvesting and caching<br />
seeds for food reserves, however,<br />
some insects are consumed (San<br />
Bernardino County Museum 2010a).<br />
The species pouches are external to<br />
its body, and its coat is spineless and<br />
bristle-free. Distinguishing<br />
characteristics of the Pacific pocket<br />
mouse are its bicolored tail, ears<br />
tipped with patches of light-hairs,<br />
and hairy-soled hind feet (USFWS<br />
2009c). Pocket mice tend to be found<br />
on soils of fine alluvial sands near<br />
the ocean. Loss of habitat from urban<br />
development, fire, and predation from domesticated cats are the primary threats to the<br />
Pacific pocket mouse.<br />
MANAGEMENT STATUS<br />
Federal Status<br />
The USFWS emergency listed the Pacific pocket mouse (Perognathus longimembris<br />
pacificus) as endangered on 3 February 1994 (USFWS 1994b) and published the final<br />
listing on 29 September 1994 (USFWS 1994c). No critical habitat has been designated for<br />
this species; however, a recovery plan has been approved (USFWS 1998a).<br />
California Status<br />
The CDFG listed the Pacific pocket mouse as a Species of Special Concern, highest<br />
priority (CDFG 2009).<br />
Regional Status<br />
The Pacific pocket mouse is a covered species in the following southern California NCCP<br />
documents:<br />
• Orange County Central/Coastal NCCP/HCP.<br />
• SDG&E.<br />
MCBCP Status<br />
The <strong>Base</strong> is in consultation with the USFWS regarding Upland habitats basewide including<br />
the Pacific pocket mouse habitat. Programmatic instructions are provided to users and<br />
residents of the <strong>Base</strong> to avoid and minimize adverse impacts to the Pacific pocket mouse.<br />
<strong>Camp</strong> <strong>Pendleton</strong>’s <strong>Base</strong> Order P3500.1N (Range and Training Regulations) addresses this<br />
3-54 <strong>Chapter</strong> 3 – <strong>Natural</strong> <strong>Resources</strong>
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